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Venting subfloor up the chimney?
I'm thinking 2 birds one stone here.....
I've been told I need better underfloor ventilation (there's no ventilation at the back of the house, just the front). We are doing some refurbishments so it's as good a time as any to rip the floor up and put a couple of snorkel vents in the back wall. And i'm blocking up a fireplace and apparently supposed to vent the chimney. As it goes against the grain to send hard earned warm air up the chimney I thought of venting the space under the floor into the unused chimney instead. It seems like a no brainer to me. |
Venting subfloor up the chimney?
On 21/07/2019 13:17, R D S wrote:
I'm thinking 2 birds one stone here..... I've been told I need better underfloor ventilation (there's no ventilation at the back of the house, just the front). We are doing some refurbishments so it's as good a time as any to rip the floor up and put a couple of snorkel vents in the back wall. And i'm blocking up a fireplace and apparently supposed to vent the chimney. As it goes against the grain to send hard earned warm air up the chimney I thought of venting the space under the floor into the unused chimney instead. It seems like a no brainer to me. And to me. |
Venting subfloor up the chimney?
"R D S" wrote in message ... I'm thinking 2 birds one stone here..... I've been told I need better underfloor ventilation (there's no ventilation at the back of the house, just the front). We are doing some refurbishments so it's as good a time as any to rip the floor up and put a couple of snorkel vents in the back wall. And i'm blocking up a fireplace and apparently supposed to vent the chimney. As it goes against the grain to send hard earned warm air up the chimney I thought of venting the space under the floor into the unused chimney instead. It seems like a no brainer to me. the subfloor ventilation should then go from the sublime to the ridiculous,...... |
Venting subfloor up the chimney?
On 21/07/2019 13:17, R D S wrote:
I'm thinking 2 birds one stone here..... I've been told I need better underfloor ventilation (there's no ventilation at the back of the house, just the front). We are doing some refurbishments so it's as good a time as any to rip the floor up and put a couple of snorkel vents in the back wall. And i'm blocking up a fireplace and apparently supposed to vent the chimney. As it goes against the grain to send hard earned warm air up the chimney I thought of venting the space under the floor into the unused chimney instead. It seems like a no brainer to me. only possible downside is that it increases sub floor heat loss which may be an issue if the floor is poorly insulated -- Its easier to fool people than to convince them that they have been fooled. Mark Twain |
Venting subfloor up the chimney?
On Sunday, 21 July 2019 13:17:24 UTC+1, R D S wrote:
I'm thinking 2 birds one stone here..... I've been told I need better underfloor ventilation (there's no ventilation at the back of the house, just the front). We are doing some refurbishments so it's as good a time as any to rip the floor up and put a couple of snorkel vents in the back wall. And i'm blocking up a fireplace and apparently supposed to vent the chimney. As it goes against the grain to send hard earned warm air up the chimney I thought of venting the space under the floor into the unused chimney instead. It seems like a no brainer to me. Just do it in a way that is practical to undo. A flat we blocked the chimney in became stuffy & damp, reopening the chimney solved it. NT |
Venting subfloor up the chimney?
On 21/07/2019 19:21, The Natural Philosopher wrote:
On 21/07/2019 13:17, R D S wrote: I'm thinking 2 birds one stone here..... I've been told I need better underfloor ventilation (there's no ventilation at the back of the house, just the front). We are doing some refurbishments so it's as good a time as any to rip the floor up and put a couple of snorkel vents in the back wall. And i'm blocking up a fireplace and apparently supposed to vent the chimney. As it goes against the grain to send hard earned warm air up the chimney I thought of venting the space under the floor into the unused chimney instead. It seems like a no brainer to me. only possible downside is that it increases sub floor heat loss which may be an issue if the floor is poorly insulated yip |
Venting subfloor up the chimney?
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Venting subfloor up the chimney?
On 21/07/2019 13:17, R D S wrote:
I'm thinking 2 birds one stone here..... I've been told I need better underfloor ventilation (there's no ventilation at the back of the house, just the front). We are doing some refurbishments so it's as good a time as any to rip the floor up and put a couple of snorkel vents in the back wall. And i'm blocking up a fireplace and apparently supposed to vent the chimney. As it goes against the grain to send hard earned warm air up the chimney I thought of venting the space under the floor into the unused chimney instead. It seems like a no brainer to me. I used to live up a hill in a very windy part of Scotland and when I opened my front door the living room carpet rose up.....had to stick some fibreglass wool into the terracotta underfloor vents ... |
Venting subfloor up the chimney?
On 21/07/2019 19:21, The Natural Philosopher wrote:
On 21/07/2019 13:17, R D S wrote: I'm thinking 2 birds one stone here..... I've been told I need better underfloor ventilation (there's no ventilation at the back of the house, just the front). We are doing some refurbishments so it's as good a time as any to rip the floor up and put a couple of snorkel vents in the back wall. And i'm blocking up a fireplace and apparently supposed to vent the chimney. As it goes against the grain to send hard earned warm air up the chimney I thought of venting the space under the floor into the unused chimney instead. It seems like a no brainer to me. only possible downside is that it increases sub floor heat loss which may be an issue if the floor is poorly insulated We're in the process of covering it with 25mm polystyrene 'boards' and T&G Caberfloor, so should be OK. |
Venting subfloor up the chimney?
On 22/07/2019 11:30, R D S wrote:
On 21/07/2019 19:21, The Natural Philosopher wrote: On 21/07/2019 13:17, R D S wrote: I'm thinking 2 birds one stone here..... I've been told I need better underfloor ventilation (there's no ventilation at the back of the house, just the front). We are doing some refurbishments so it's as good a time as any to rip the floor up and put a couple of snorkel vents in the back wall. And i'm blocking up a fireplace and apparently supposed to vent the chimney. As it goes against the grain to send hard earned warm air up the chimney I thought of venting the space under the floor into the unused chimney instead. It seems like a no brainer to me. only possible downside is that it increases sub floor heat loss which may be an issue if the floor is poorly insulated We're in the process of covering it with 25mm polystyrene 'boards' and T&G Caberfloor, so should be OK. Make that 65mm and its still nowere near enough... -- €œwhen things get difficult you just have to lie€ €• Jean Claud Jüncker |
Venting subfloor up the chimney?
On 22/07/2019 11:30, R D S wrote:
On 21/07/2019 19:21, The Natural Philosopher wrote: On 21/07/2019 13:17, R D S wrote: I'm thinking 2 birds one stone here..... I've been told I need better underfloor ventilation (there's no ventilation at the back of the house, just the front). We are doing some refurbishments so it's as good a time as any to rip the floor up and put a couple of snorkel vents in the back wall. And i'm blocking up a fireplace and apparently supposed to vent the chimney. As it goes against the grain to send hard earned warm air up the chimney I thought of venting the space under the floor into the unused chimney instead. It seems like a no brainer to me. only possible downside is that it increases sub floor heat loss which may be an issue if the floor is poorly insulated We're in the process of covering it with 25mm polystyrene 'boards' and T&G Caberfloor, so should be OK. 30% heat loss through the floor. If any air leaks between those inadequate insulation panels then you might as well not bother. |
Venting subfloor up the chimney?
On 22/07/2019 16:33, Andrew wrote:
On 22/07/2019 11:30, R D S wrote: On 21/07/2019 19:21, The Natural Philosopher wrote: On 21/07/2019 13:17, R D S wrote: I'm thinking 2 birds one stone here..... I've been told I need better underfloor ventilation (there's no ventilation at the back of the house, just the front). We are doing some refurbishments so it's as good a time as any to rip the floor up and put a couple of snorkel vents in the back wall. And i'm blocking up a fireplace and apparently supposed to vent the chimney. As it goes against the grain to send hard earned warm air up the chimney I thought of venting the space under the floor into the unused chimney instead. It seems like a no brainer to me. only possible downside is that it increases sub floor heat loss which may be an issue if the floor is poorly insulated We're in the process of covering it with 25mm polystyrene 'boards' and T&G Caberfloor, so should be OK. 30% heat loss through the floor. If any air leaks between those inadequate insulation panels then you might as well not bother. There's nothing there now. Except the floorboards. |
Venting subfloor up the chimney?
Just read your post and I was thinking of doing the same thing. My floor is insulated but I have poor subfloor ventilation. Rather than use fans I thought I would use the redundant chimney to draw more air. How did this work out for you ?
-- For full context, visit https://www.homeownershub.com/uk-diy...y-1373369-.htm |
Venting subfloor up the chimney?
Quote the post you are replying to, especially when its old, that protal is
crap. Brian -- -- This newsgroup posting comes to you directly from... The Sofa of Brian Gaff... Blind user, so no pictures please Note this Signature is meaningless.! "MSK" wrote in message roupdirect.com... Just read your post and I was thinking of doing the same thing. My floor is insulated but I have poor subfloor ventilation. Rather than use fans I thought I would use the redundant chimney to draw more air. How did this work out for you ? -- For full context, visit https://www.homeownershub.com/uk-diy...y-1373369-.htm |
Venting subfloor up the chimney?
On 02/09/2020 23:30, MSK wrote:
Just read your post and I was thinking of doing the same thing. My floor is insulated but I have poor subfloor ventilation. Rather than use fans I thought I would use the redundant chimney to draw more air. How did this work out for you ? I didn't do it, largely because I forgot before I boarded over the floor and walls! What I did do though, and it's not mega pretty but I can live with it, was to make a sort of internal vent (hole in the floor, adjacent hole through external wall) in the corner* of the room and box it in. I stuck a camera down there first and took some pictures of the timbers which looked mint, and it will be relatively easy to remove the box and do the same which might help when it next needs surveying**. *It helps that this particular corner is in the centre of the room as it is L shaped. **Though in my experience if it's just a valuation report, surveyors seem to do a copy and paste job of all the things that might be wrong with a property which just serves to put off the buyer and make the bank reluctant to lend. |
Venting subfloor up the chimney?
https://groups.google.com/g/uk.d-i-y...m/U1hEJLqcAAAJ
is the thread, very interesting, i might vent an old wooden floor up the chimney myself... put lots of kingspan and foam and tape the joints as someone says so dont get draughts into the room.. [g] On Thursday, September 3, 2020 at 8:56:17 AM UTC+1, Brian Gaff (Sofa) wrote: Quote the post you are replying to, especially when its old, that protal is crap. Brian -- -- This newsgroup posting comes to you directly from... The Sofa of Brian Gaff... Blind user, so no pictures please Note this Signature is meaningless.! "MSK" wrote in message oupdirect.com... Just read your post and I was thinking of doing the same thing. My floor is insulated but I have poor subfloor ventilation. Rather than use fans I thought I would use the redundant chimney to draw more air. How did this work out for you ? -- For full context, visit https://www.homeownershub.com/uk-diy...y-1373369-.htm |
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