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corrugated asbestos garage roof, how to spread my weight?
I need to get up on the roof of my garage to remove the moss. I don't have a feel for how much imposed weight I can put on a typical asbestos garage roof before I crack the panels. The panels are supported on wood beams about every 5 feet. If I put up a couple of planks to spread my weight across two beams would that be enough do you think? I weigh 100kg clothed. Robert |
corrugated asbestos garage roof, how to spread my weight?
On 3 Mar, 16:09, RobertL wrote:
I need to get up on the roof of my garage to remove the moss. * Get a platform (three-way convert-a-ladder - great things and well worth Aldi's 60 quid) and stand alongside with a long rake. No way will I use crawling boards on a small-corrugation asbestos roof. The stuff is brittle as anything, and even if you don't go through it, there's a risk of cracking it and resultant leaks. |
corrugated asbestos garage roof, how to spread my weight?
On Mar 3, 4:19*pm, Andy Dingley wrote:
On 3 Mar, 16:09, RobertL wrote: I need to get up on the roof of my garage to remove the moss. * Get a platform (three-way convert-a-ladder - great things and well worth Aldi's 60 quid) and stand alongside with a long rake. No way will I use crawling boards on a small-corrugation asbestos roof. The stuff is brittle as anything, and even if you don't go through it, there's a risk of cracking it and resultant leaks. Thanks, it was cracking I was worried about. I hadn't even though about falling through! The corrugations are about 6" apart and about 2" deep. Robert |
corrugated asbestos garage roof, how to spread my weight?
On Wed, 3 Mar 2010 08:09:19 -0800 (PST), RobertL
wrote: I need to get up on the roof of my garage to remove the moss. I don't have a feel for how much imposed weight I can put on a typical asbestos garage roof before I crack the panels. The panels are supported on wood beams about every 5 feet. If I put up a couple of planks to spread my weight across two beams would that be enough do you think? I weigh 100kg clothed. No chance. Not only is asbestos cement weak and brittle, but there is the danger from asbestos fibres when it breaks, as it surely will with any weight on it. Instead, use a ladder or staging to get into a position where you can remove the moss with a pressure washer. Otherwise, don't bother. If you insist on going ahead with your plank idea, you should call the ambulance before starting work. |
corrugated asbestos garage roof, how to spread my weight?
On 3 Mar, 16:36, Bruce wrote:
On Wed, 3 Mar 2010 08:09:19 -0800 (PST), RobertL wrote: I need to get up on the roof of my garage to remove the moss. I don't have a feel for how much imposed weight I can put on a typical asbestos garage roof before I crack the panels. The panels are supported on wood beams about every 5 feet. If I put up a couple of planks to spread my weight across two beams would that be enough do you think? I weigh 100kg clothed. No chance. Not only is asbestos cement weak and brittle, but there is the danger from asbestos fibres when it breaks, as it surely will with any weight on it. oh no! not the "asbestos cement DANGER DANGER" thread again I hope Bruce?! from wiki - to save the bandwidth:- "Asbestos exposure becomes a health concern when high concentrations of asbestos fibers are inhaled over a long time period.[23] People who become ill from inhaling asbestos are often those who are exposed on a day-to-day basis in a job where they worked directly with the material. As a person's exposure to fibers increases, because of being exposed to higher concentrations of fibers and/or by being exposed for a longer time, then that person's risk of disease also increases. Disease is very unlikely to result from a single, high-level exposure, or from a short period of exposure to lower levels.[23] Smoking combined with asbestos exposure may increase the health risk dramatically" Cheers JimK |
corrugated asbestos garage roof, how to spread my weight?
On Mar 3, 4:24*pm, RobertL wrote:
On Mar 3, 4:19*pm, Andy Dingley wrote: On 3 Mar, 16:09, RobertL wrote: I need to get up on the roof of my garage to remove the moss. * Get a platform (three-way convert-a-ladder - great things and well worth Aldi's 60 quid) and stand alongside with a long rake. No way will I use crawling boards on a small-corrugation asbestos roof. The stuff is brittle as anything, and even if you don't go through it, there's a risk of cracking it and resultant leaks. Thanks, it was cracking I was worried about. * I hadn't even though about falling through! The corrugations are about 6" apart and about 2" deep. Robert Cant you just use a long stick to get the moss off? Copper wire run along the ridge may stop it regrowing. NT |
corrugated asbestos garage roof, how to spread my weight?
On Wed, 3 Mar 2010 08:58:14 -0800 (PST), JimK
wrote: oh no! not the "asbestos cement DANGER DANGER" thread again I hope Bruce?! It depends on which fibres were used, which depends on when the roof panels were made and by whom. In other words, it depends. And it is extremely unlikely that any records are available, or remain. My health and safety advisers take the view that *all* asbestos cement products should be left alone or removed by a specialist contractor. But I can understand people thinking that they can take a chance, and that they will probably get away with it to save a few £s. The world is full of chancers. |
corrugated asbestos garage roof, how to spread my weight?
On Mar 3, 1:58*pm, JimK wrote:
On 3 Mar, 16:36, Bruce wrote: On Wed, 3 Mar 2010 08:09:19 -0800 (PST), RobertL wrote: I need to get up on the roof of my garage to remove the moss. * I don't have a feel for how much imposed weight I can put on a typical asbestos garage roof before I crack the panels. *The panels are supported on wood beams about every 5 feet. If I put up a couple of planks to spread my weight across two beams would that be enough do you think? I weigh 100kg clothed. No chance. *Not only is asbestos cement weak and brittle, but there is the danger from asbestos fibres when it breaks, as it surely will with any weight on it. oh no! not the "asbestos cement DANGER DANGER" thread again I hope Bruce?! from wiki - to save the bandwidth:- "Asbestos exposure becomes a health concern when high concentrations of asbestos fibers are inhaled over a long time period.[23] People who become ill from inhaling asbestos are often those who are exposed on a day-to-day basis in a job where they worked directly with the material. As a person's exposure to fibers increases, because of being exposed to higher concentrations of fibers and/or by being exposed for a longer time, then that person's risk of disease also increases. Disease is very unlikely to result from a single, high-level exposure, or from a short period of exposure to lower levels.[23] Smoking combined with asbestos exposure may increase the health risk dramatically" Cheers JimK- Hide quoted text - - Show quoted text - As above; very little danger if any, just because it is asbestos. Cracking, leaks, falling through/injury yes. Don't get onto it at all! Pressure wash or scrape from the sides, also one could make a shaped scraper to fit the grooves on a longish handle! But why is it necessary to remove the moss? PS. Have cut asbestos with hand saw, and on one or two occasions with a hand held electric circular saw, during the last 55 years. Always outside and making sure to keep everything damp to avoid inhaling fibres. And am still around! |
corrugated asbestos garage roof, how to spread my weight?
On 3 Mar, 16:36, Bruce wrote:
Instead, use a ladder or staging to get into a position where you can remove the moss with a pressure washer. *Otherwise, don't bother. One of the worst things you can do with an asbestos roof is to pressure wash it. Now that really does loosen the fibres up! Personally I leave mine and its moss well alone. I fix it where it needs it, otherwise we live in blissful mutual ignoring of each other. |
corrugated asbestos garage roof, how to spread my weight?
On 3 Mar, 17:17, Bruce wrote:
It depends on which fibres were used, This is roofing board. Just how much fibre variation was there? |
corrugated asbestos garage roof, how to spread my weight?
RobertL wrote:
I need to get up on the roof of my garage to remove the moss. I don't have a feel for how much imposed weight I can put on a typical asbestos garage roof before I crack the panels. The panels are supported on wood beams about every 5 feet. If I put up a couple of planks to spread my weight across two beams would that be enough do you think? I weigh 100kg clothed. Robert I used to walk all over my dad's garage roof which was very rusty metal by always putting my foot on a nail, cos under the nails were rafters. [g] |
corrugated asbestos garage roof, how to spread my weight?
On Mar 3, 5:17*pm, Bruce wrote:
On Wed, 3 Mar 2010 08:58:14 -0800 (PST), JimK wrote: oh no! not the "asbestos cement DANGER DANGER" thread again I hope Bruce?! It depends on which fibres were used, which depends on when the roof panels were made and by whom. *In other words, it depends. *And it is extremely unlikely that any records are available, or remain. My health and safety advisers take the view that *all* asbestos cement products should be left alone or removed by a specialist contractor. * But I can understand people thinking that they can take a chance, and that they will probably get away with it to save a few s. *The world is full of chancers. I think the point is there is a lack of sound evidence that taking white asbestos sheet down twice per lifetime was in any way chancey. NT |
corrugated asbestos garage roof, how to spread my weight?
On 3 Mar, 17:17, Bruce wrote:
On Wed, 3 Mar 2010 08:58:14 -0800 (PST), JimK wrote: oh no! not the "asbestos cement DANGER DANGER" thread again I hope Bruce?! It depends on which fibres were used, which depends on when the roof panels were made and by whom. In other words, it depends. And it is extremely unlikely that any records are available, or remain. My health and safety advisers take the view that *all* asbestos cement products should be left alone or removed by a specialist contractor. No surprise there then..... But I can understand people thinking that they can take a chance, and that they will probably get away with it to save a few s. The world is full of chancers. matched in equal number by over zealous "career" H&S "professhunals" who see "risk" of any size as an opportunity to make a lot of $ out of "mugs" too scared by the propaganda or too thick to assess the "risk" themselves - there's one born every minute! (luckily for the H&S gang and specialist contractors....) NB this is UK DIY not uk.corporate.responsibility :) Cheers JimK |
corrugated asbestos garage roof, how to spread my weight?
On 3 Mar, 18:02, NT wrote:
On Mar 3, 5:17 pm, Bruce wrote: On Wed, 3 Mar 2010 08:58:14 -0800 (PST), JimK wrote: oh no! not the "asbestos cement DANGER DANGER" thread again I hope Bruce?! It depends on which fibres were used, which depends on when the roof panels were made and by whom. In other words, it depends. And it is extremely unlikely that any records are available, or remain. My health and safety advisers take the view that *all* asbestos cement products should be left alone or removed by a specialist contractor. But I can understand people thinking that they can take a chance, and that they will probably get away with it to save a few s. The world is full of chancers. I think the point is there is a lack of sound evidence that taking white asbestos sheet down twice per lifetime was in any way chancey. NT Agreed (& succinctly put :) JimK |
corrugated asbestos garage roof, how to spread my weight?
On Wed, 3 Mar 2010 08:09:19 -0800 (PST), RobertL wrote:
I need to get up on the roof of my garage to remove the moss. I don't have a feel for how much imposed weight I can put on a typical asbestos garage roof before I crack the panels. The panels are supported on wood beams about every 5 feet. If I put up a couple of planks to spread my weight across two beams would that be enough do you think? I weigh 100kg clothed. Robert Did the roof of my house from a ladder, with standoff, using a long-handled dutch hoe. -- Peter. 2x4 - thick plank; 4x4 - two of 'em. |
corrugated asbestos garage roof, how to spread my weight?
On Wed, 3 Mar 2010 09:20:39 -0800 (PST), terry wrote:
But why is it necessary to remove the moss? On my shed's roof, the moss had slightly pushed up the overlaps so that rain was blown under by strong winds from the wrong direction. -- Peter. 2x4 - thick plank; 4x4 - two of 'em. |
corrugated asbestos garage roof, how to spread my weight?
On Wed, 3 Mar 2010 09:21:13 -0800 (PST), Andy Dingley wrote:
On 3 Mar, 16:36, Bruce wrote: Instead, use a ladder or staging to get into a position where you can remove the moss with a pressure washer. *Otherwise, don't bother. One of the worst things you can do with an asbestos roof is to pressure wash it. Now that really does loosen the fibres up! Personally I leave mine and its moss well alone. I fix it where it needs it, otherwise we live in blissful mutual ignoring of each other. I found a site that had paint for asbestos roofing. The instructions for Preparation included scrubbing the asbestos - but no mention of having a steady stream of water on to it! -- Peter. 2x4 - thick plank; 4x4 - two of 'em. |
corrugated asbestos garage roof, how to spread my weight?
In message
, RobertL writes I need to get up on the roof of my garage to remove the moss. I don't have a feel for how much imposed weight I can put on a typical asbestos garage roof before I crack the panels. The panels are supported on wood beams about every 5 feet. If I put up a couple of planks to spread my weight across two beams would that be enough do you think? I weigh 100kg clothed. Crikey. That's more than I weigh! Use a long handled garden draw hoe. One of your allotment holding neighbours is bound to have one. regards -- Tim Lamb |
corrugated asbestos garage roof, how to spread my weight?
On 03/03/2010 16:58, JimK wrote:
On 3 Mar, 16:36, wrote: On Wed, 3 Mar 2010 08:09:19 -0800 (PST), RobertL wrote: I need to get up on the roof of my garage to remove the moss. I don't have a feel for how much imposed weight I can put on a typical asbestos garage roof before I crack the panels. The panels are supported on wood beams about every 5 feet. If I put up a couple of planks to spread my weight across two beams would that be enough do you think? I weigh 100kg clothed. No chance. Not only is asbestos cement weak and brittle, but there is the danger from asbestos fibres when it breaks, as it surely will with any weight on it. oh no! not the "asbestos cement DANGER DANGER" thread again I hope Bruce?! from wiki - to save the bandwidth:- "Asbestos exposure becomes a health concern when high concentrations of asbestos fibers are inhaled over a long time period.[23] People who become ill from inhaling asbestos are often those who are exposed on a day-to-day basis in a job where they worked directly with the material. As a person's exposure to fibers increases, because of being exposed to higher concentrations of fibers and/or by being exposed for a longer time, then that person's risk of disease also increases. Disease is very unlikely to result from a single, high-level exposure, or from a short period of exposure to lower levels.[23] Smoking combined with asbestos exposure may increase the health risk dramatically" Cheers JimK One fibre can kill. Painful death from mesothelioma. I used to read the medical reports when handling insurance claims. Not a nice part f the job. Cement asbestos is however pretty safe. Clean breaks are unlikely to release fibres but do not drill or file (or angle grind) it. My corrugated asbestos cement garage roof is gaining moss and it will stay that way. Waiting for the tree above to drop a branch so the insurance company will replace it. Just as long as they can afford to continue to pay my pension. Largest general insurer in Chile. |
corrugated asbestos garage roof, how to spread my weight?
In message
, RobertL writes I need to get up on the roof of my garage to remove the moss. I don't have a feel for how much imposed weight I can put on a typical asbestos garage roof before I crack the panels. The panels are supported on wood beams about every 5 feet. If I put up a couple of planks to spread my weight across two beams would that be enough do you think? I weigh 100kg clothed. Lardy bugger Put your planks on the screws / bolts that hold the sheets on, that way you are loading the beams directly. Asbestos sheets crack very easily when they get old -- geoff |
corrugated asbestos garage roof, how to spread my weight?
On 3 Mar, 19:54, Invisible Man wrote:
On 03/03/2010 16:58, JimK wrote: On 3 Mar, 16:36, wrote: On Wed, 3 Mar 2010 08:09:19 -0800 (PST), RobertL wrote: I need to get up on the roof of my garage to remove the moss. I don't have a feel for how much imposed weight I can put on a typical asbestos garage roof before I crack the panels. The panels are supported on wood beams about every 5 feet. If I put up a couple of planks to spread my weight across two beams would that be enough do you think? I weigh 100kg clothed. No chance. Not only is asbestos cement weak and brittle, but there is the danger from asbestos fibres when it breaks, as it surely will with any weight on it. oh no! not the "asbestos cement DANGER DANGER" thread again I hope Bruce?! from wiki - to save the bandwidth:- "Asbestos exposure becomes a health concern when high concentrations of asbestos fibers are inhaled over a long time period.[23] People who become ill from inhaling asbestos are often those who are exposed on a day-to-day basis in a job where they worked directly with the material. As a person's exposure to fibers increases, because of being exposed to higher concentrations of fibers and/or by being exposed for a longer time, then that person's risk of disease also increases. Disease is very unlikely to result from a single, high-level exposure, or from a short period of exposure to lower levels.[23] Smoking combined with asbestos exposure may increase the health risk dramatically" Cheers JimK One fibre can kill. Painful death from mesothelioma. I used to read the medical reports when handling insurance claims. Not a nice part f the job. pah! how many reports stated "one fibre" killed them or caused meso.?? Cement asbestos is however pretty safe. Clean breaks are unlikely to release fibres but do not drill or file (or angle grind) it. ....every day of your working life My corrugated asbestos cement garage roof is gaining moss and it will stay that way. Waiting for the tree above to drop a branch so the insurance company will replace it. and you desist breathing until they've dealt with it presumably (lest the "single fibre" gets you)? more hysteria IMHO JimK |
corrugated asbestos garage roof, how to spread my weight?
In message , Bruce
writes On Wed, 3 Mar 2010 08:09:19 -0800 (PST), RobertL wrote: I need to get up on the roof of my garage to remove the moss. I don't have a feel for how much imposed weight I can put on a typical asbestos garage roof before I crack the panels. The panels are supported on wood beams about every 5 feet. If I put up a couple of planks to spread my weight across two beams would that be enough do you think? I weigh 100kg clothed. No chance. Not only is asbestos cement weak and brittle, but there is the danger from asbestos fibres when it breaks, as it surely will with any weight on it. The risk from this sort of asbestos is minimal Instead, use a ladder or staging to get into a position where you can remove the moss with a pressure washer. Otherwise, don't bother. If you insist on going ahead with your plank idea, you should call the ambulance before starting work. Do they offer a moss removal service or something then ? FFS uk.safety.nazis.org is over there ------------------- -- geoff |
corrugated asbestos garage roof, how to spread my weight?
In message , Bruce
writes On Wed, 3 Mar 2010 08:58:14 -0800 (PST), JimK wrote: oh no! not the "asbestos cement DANGER DANGER" thread again I hope Bruce?! It depends on which fibres were used, which depends on when the roof panels were made and by whom. In other words, it depends. And it is extremely unlikely that any records are available, or remain. My health and safety advisers take the view that *all* asbestos cement products should be left alone or removed by a specialist contractor. But I can understand people thinking that they can take a chance, and that they will probably get away with it to save a few £s. The world is full of chancers. That's how we came down from the trees -- geoff |
corrugated asbestos garage roof, how to spread my weight?
In message
, NT writes On Mar 3, 5:17*pm, Bruce wrote: On Wed, 3 Mar 2010 08:58:14 -0800 (PST), JimK wrote: oh no! not the "asbestos cement DANGER DANGER" thread again I hope Bruce?! It depends on which fibres were used, which depends on when the roof panels were made and by whom. *In other words, it depends. *And it is extremely unlikely that any records are available, or remain. My health and safety advisers take the view that *all* asbestos cement products should be left alone or removed by a specialist contractor. * But I can understand people thinking that they can take a chance, and that they will probably get away with it to save a few s. *The world is full of chancers. I think the point is there is a lack of sound evidence that taking white asbestos sheet down twice per lifetime was in any way chancey. That's just not true, you could get hit by a meteorite while you were climbing the ladder -- geoff |
corrugated asbestos garage roof, how to spread my weight?
In message
, terry writes On Mar 3, 1:58*pm, JimK wrote: On 3 Mar, 16:36, Bruce wrote: On Wed, 3 Mar 2010 08:09:19 -0800 (PST), RobertL wrote: I need to get up on the roof of my garage to remove the moss. * I don't have a feel for how much imposed weight I can put on a typical asbestos garage roof before I crack the panels. *The panels are supported on wood beams about every 5 feet. If I put up a couple of planks to spread my weight across two beams would that be enough do you think? I weigh 100kg clothed. No chance. *Not only is asbestos cement weak and brittle, but there is the danger from asbestos fibres when it breaks, as it surely will with any weight on it. oh no! not the "asbestos cement DANGER DANGER" thread again I hope Bruce?! from wiki - to save the bandwidth:- "Asbestos exposure becomes a health concern when high concentrations of asbestos fibers are inhaled over a long time period.[23] People who become ill from inhaling asbestos are often those who are exposed on a day-to-day basis in a job where they worked directly with the material. As a person's exposure to fibers increases, because of being exposed to higher concentrations of fibers and/or by being exposed for a longer time, then that person's risk of disease also increases. Disease is very unlikely to result from a single, high-level exposure, or from a short period of exposure to lower levels.[23] Smoking combined with asbestos exposure may increase the health risk dramatically" Cheers JimK- Hide quoted text - - Show quoted text - As above; very little danger if any, just because it is asbestos. Cracking, leaks, falling through/injury yes. Don't get onto it at all! Pressure wash or scrape from the sides, also one could make a shaped scraper to fit the grooves on a longish handle! But why is it necessary to remove the moss? PS. Have cut asbestos with hand saw, and on one or two occasions with a hand held electric circular saw, during the last 55 years. Always outside and making sure to keep everything damp to avoid inhaling fibres. And am still around! Spent a year erecting pre-fab buildings One on the roof drilling, one underneath putting on the clips. The air inside was a haze of fibres -- geoff |
corrugated asbestos garage roof, how to spread my weight?
In message , Tim Lamb
writes In message , RobertL writes I need to get up on the roof of my garage to remove the moss. I don't have a feel for how much imposed weight I can put on a typical asbestos garage roof before I crack the panels. The panels are supported on wood beams about every 5 feet. If I put up a couple of planks to spread my weight across two beams would that be enough do you think? I weigh 100kg clothed. Crikey. That's more than I weigh! Lightweight ... Use a long handled garden draw hoe. One of your allotment holding neighbours is bound to have one. regards -- geoff |
corrugated asbestos garage roof, how to spread my weight?
RobertL explained on 03/03/2010 :
Thanks, it was cracking I was worried about. I hadn't even though about falling through! The corrugations are about 6" apart and about 2" deep. I fell through one of my roofs last year - only about 6' down onto piles of soft materials, but it could have been much worse. It cracks without any warning at all. I was using a plank BTW. If you are going to use planks, the plank needs to be strong enough to support all of your weight without transferring any onto the roof mid-span, it also needs to have the weight only supported over the beams via spacers and the weight under the spacers needs to be put onto the roof via some material with some give in it. -- Regards, Harry (M1BYT) (L) http://www.ukradioamateur.co.uk |
corrugated asbestos garage roof, how to spread my weight?
PeterC was thinking very hard :
On my shed's roof, the moss had slightly pushed up the overlaps so that rain was blown under by strong winds from the wrong direction. Squirt some good frame sealant into the inside (uphill) joint edges. With a similar problem, that is what I did and it has proven to be very effective. -- Regards, Harry (M1BYT) (L) http://www.ukradioamateur.co.uk |
corrugated asbestos garage roof, how to spread my weight?
Andy Dingley wrote:
On 3 Mar, 16:36, Bruce wrote: Instead, use a ladder or staging to get into a position where you can remove the moss with a pressure washer. Otherwise, don't bother. One of the worst things you can do with an asbestos roof is to pressure wash it. Now that really does loosen the fibres up! With respect - bollox! -- Dave - The Medway Handyman www.medwayhandyman.co.uk |
corrugated asbestos garage roof, how to spread my weight?
In message , The Medway
Handyman writes One of the worst things you can do with an asbestos roof is to pressure wash it. Now that really does loosen the fibres up! With respect - bollox! http://www.aic.org.uk/asbestos_cement.htm Cleaning Asbestos Cement Roofs. This should only be carried out if it can not be avoided, moss and lichens although some may think them unsightly are not normally detrimental. Asbestos cement is very fragile and so the recommendations in HSG 33 Health and safety in roof work (1998) must be followed. Do not clean by dry scrapping or by pressure washing, both can produce dangerous quantities of free asbestos fibres. Either: * Use remote cleaning. This technique involves skilled operatives using units with enclosed rotary cleaning heads and high-pressure water jets, the filtering of the water run off and the disposal of the filter waste as asbestos waste. It should only be carried out by skilled specialist contractors. * Cleaning with surface biocides. The biocides are applied with low-pressure sprays or as washes. The roof is then left for the moss and lichen to die, when it can be gently brushed from the roof with soft brushes. It is important that the roof is kept wet during the brushing and the waste is carefully collected placed in plastic bags and disposed of as asbestos waste. -- Bill |
corrugated asbestos garage roof, how to spread my weight?
On 03/03/2010 22:34, JimK wrote:
On 3 Mar, 19:54, Invisible wrote: On 03/03/2010 16:58, JimK wrote: On 3 Mar, 16:36, wrote: On Wed, 3 Mar 2010 08:09:19 -0800 (PST), RobertL wrote: I need to get up on the roof of my garage to remove the moss. I don't have a feel for how much imposed weight I can put on a typical asbestos garage roof before I crack the panels. The panels are supported on wood beams about every 5 feet. If I put up a couple of planks to spread my weight across two beams would that be enough do you think? I weigh 100kg clothed. No chance. Not only is asbestos cement weak and brittle, but there is the danger from asbestos fibres when it breaks, as it surely will with any weight on it. oh no! not the "asbestos cement DANGER DANGER" thread again I hope Bruce?! from wiki - to save the bandwidth:- "Asbestos exposure becomes a health concern when high concentrations of asbestos fibers are inhaled over a long time period.[23] People who become ill from inhaling asbestos are often those who are exposed on a day-to-day basis in a job where they worked directly with the material. As a person's exposure to fibers increases, because of being exposed to higher concentrations of fibers and/or by being exposed for a longer time, then that person's risk of disease also increases. Disease is very unlikely to result from a single, high-level exposure, or from a short period of exposure to lower levels.[23] Smoking combined with asbestos exposure may increase the health risk dramatically" Cheers JimK One fibre can kill. Painful death from mesothelioma. I used to read the medical reports when handling insurance claims. Not a nice part f the job. pah! how many reports stated "one fibre" killed them or caused meso.?? Cement asbestos is however pretty safe. Clean breaks are unlikely to release fibres but do not drill or file (or angle grind) it. ...every day of your working life My corrugated asbestos cement garage roof is gaining moss and it will stay that way. Waiting for the tree above to drop a branch so the insurance company will replace it. and you desist breathing until they've dealt with it presumably (lest the "single fibre" gets you)? more hysteria IMHO JimK I'll leave my roof for 10 years. That way I'll be dead before meso has time to develop. |
corrugated asbestos garage roof, how to spread my weight?
On Mar 3, 7:50*pm, Tim Lamb wrote:
In message , RobertL writes I need to get up on the roof of my garage to remove the moss. * I don't have a feel for how much imposed weight I can put on a typical asbestos garage roof before I crack the panels. *The panels are supported on wood beams about every 5 feet. If I put up a couple of planks to spread my weight across two beams would that be enough do you think? I weigh 100kg clothed. Crikey. That's more than I weigh! I am 6'3" Robert |
corrugated asbestos garage roof, how to spread my weight?
Thanks for all you guidance folks. Clearly I will need to do it with a long handled something or other. BTW, the reason it's needed is that it blocks the flow of water down the roof so the water backs up and seems in through the overlaps. I only need to clear the lower sections I think. Robert |
corrugated asbestos garage roof, how to spread my weight?
RobertL wrote:
I need to get up on the roof of my garage to remove the moss. I don't have a feel for how much imposed weight I can put on a typical asbestos garage roof before I crack the panels. The panels are supported on wood beams about every 5 feet. I did my large garage roof (approx 10m by 5m) in an afternoon using a chimney sweep brush. Gaffer tape a weight to the brush end, then draw it along the corrugations using the extender rods. Brush all the moss into the gutter, then scoop it out with a trowel. Hope this helps, Roger. |
corrugated asbestos garage roof, how to spread my weight?
In message
, RobertL writes If I put up a couple of planks to spread my weight across two beams would that be enough do you think? I weigh 100kg clothed. Crikey. That's more than I weigh! I am 6'3" Ah! You have 4" of extra storage space. My excuse has always been *very heavy bones* as I do not float. It makes swimming very hard work. regards -- Tim Lamb |
corrugated asbestos garage roof, how to spread my weight?
On Mar 4, 12:59*am, Bill wrote:
In message , The Medway Handyman writes One of the worst things you can do with an asbestos roof is to pressure wash it. Now that really does loosen the fibres up! With respect - bollox! http://www.aic.org.uk/asbestos_cement.htm Cleaning Asbestos Cement Roofs. This should only be carried out if it can not be avoided, moss and lichens although some may think them unsightly are not normally detrimental. Asbestos cement is very fragile and so the recommendations in HSG 33 Health and safety in roof work (1998) must be followed. Do not clean by dry scrapping or by pressure washing, both can produce dangerous quantities of free asbestos fibres. Either: * * ** Use remote cleaning. This technique involves skilled operatives using units with enclosed rotary cleaning heads and high-pressure water jets, the filtering of the water run off and the disposal of the filter waste as asbestos waste. It should only be carried out by skilled specialist contractors. * * ** Cleaning with surface biocides. The biocides are applied with low-pressure sprays or as washes. The roof is then left for the moss and lichen to die, when it can be gently brushed from the roof with soft brushes. It is important that the roof is kept wet during the brushing and the waste is carefully collected placed in plastic bags and disposed of as asbestos waste. How credible is that? The claim that moss from an asbestos cement roof, which remains undamaged by moss growth, must be treated like asbestos for disposal. Not only that but they want asbestos disposal companies to do your roof cleaning! I think we can see where that site's coming from. NT |
corrugated asbestos garage roof, how to spread my weight?
RobertL wrote:
I need to get up on the roof of my garage to remove the moss. bad idea. |
corrugated asbestos garage roof, how to spread my weight?
On 4 Mar, 10:38, NT wrote:
On Mar 4, 12:59 am, Bill wrote: In message , The Medway Handyman writes One of the worst things you can do with an asbestos roof is to pressure wash it. Now that really does loosen the fibres up! With respect - bollox! http://www.aic.org.uk/asbestos_cement.htm Cleaning Asbestos Cement Roofs. This should only be carried out if it can not be avoided, moss and lichens although some may think them unsightly are not normally detrimental. Asbestos cement is very fragile and so the recommendations in HSG 33 Health and safety in roof work (1998) must be followed. Do not clean by dry scrapping or by pressure washing, both can produce dangerous quantities of free asbestos fibres. Either: * Use remote cleaning. This technique involves skilled operatives using units with enclosed rotary cleaning heads and high-pressure water jets, the filtering of the water run off and the disposal of the filter waste as asbestos waste. It should only be carried out by skilled specialist contractors. * Cleaning with surface biocides. The biocides are applied with low-pressure sprays or as washes. The roof is then left for the moss and lichen to die, when it can be gently brushed from the roof with soft brushes. It is important that the roof is kept wet during the brushing and the waste is carefully collected placed in plastic bags and disposed of as asbestos waste. How credible is that? The claim that moss from an asbestos cement roof, which remains undamaged by moss growth, must be treated like asbestos for disposal. Not only that but they want asbestos disposal companies to do your roof cleaning! I think we can see where that site's coming from. NT £1 a minute "advice" line that's where from :) " Director General A M Hutchinson FIoR" WTF is "FIoR" anyone? JimK |
corrugated asbestos garage roof, how to spread my weight?
"Tim Lamb" wrote in message ... Ah! You have 4" of extra storage space. My excuse has always been *very heavy bones* as I do not float. It makes swimming very hard work. Fat floats, muscle doesn't, the bones don't appear to have much effect. I sink like a stone and can just sit on the bottom of the pool. |
corrugated asbestos garage roof, how to spread my weight?
On Wed, 03 Mar 2010 23:34:15 GMT, Harry Bloomfield wrote:
PeterC was thinking very hard : On my shed's roof, the moss had slightly pushed up the overlaps so that rain was blown under by strong winds from the wrong direction. Squirt some good frame sealant into the inside (uphill) joint edges. With a similar problem, that is what I did and it has proven to be very effective. Good point - thanks. -- Peter. 2x4 - thick plank; 4x4 - two of 'em. |
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