I have been asked to attach a small solar charger panel for trickle
charger (maybe 6 inch square) thingy to a garage roof which has concrete
type (not slate) roof tiles.
I wont see the job until Saturday so cant be 100% sure about anything.
Whats the best way to attach it, I first thought silicone but I doubt
that would adhere to the tiles, Then I am thinking just slip the bracket
(presumably it has one) under a tile.

Any other thoughts? Could I drill into the tiles and use a small screw?

On 10/06/2014 16:44, ss wrote:
I have been asked to attach a small solar charger panel for trickle
charger (maybe 6 inch square) thingy to a garage roof which has concrete
type (not slate) roof tiles.
I wont see the job until Saturday so cant be 100% sure about anything.
Whats the best way to attach it, I first thought silicone but I doubt
that would adhere to the tiles, Then I am thinking just slip the bracket
(presumably it has one) under a tile.

Any other thoughts? Could I drill into the tiles and use a small screw?

A high tack PU glue will do it, but for the size of toy PV panel you are
talking about it probably isn't even worth the effort of trying.

A 3'x1' PV panel at least stands a chance of being worthwhile.

--
Regards,
Martin Brown

Yes i was just wondering about such a puny panel. That sounds like the sort
of cheap rubbish they used to sell with those plant turners for window
sills.
Brian

--
From the Sofa of Brian Gaff Reply address is active
"Martin Brown" wrote in message
...
On 10/06/2014 16:44, ss wrote:
I have been asked to attach a small solar charger panel for trickle
charger (maybe 6 inch square) thingy to a garage roof which has concrete
type (not slate) roof tiles.
I wont see the job until Saturday so cant be 100% sure about anything.
Whats the best way to attach it, I first thought silicone but I doubt
that would adhere to the tiles, Then I am thinking just slip the bracket
(presumably it has one) under a tile.

Any other thoughts? Could I drill into the tiles and use a small screw?

A high tack PU glue will do it, but for the size of toy PV panel you are
talking about it probably isn't even worth the effort of trying.

A 3'x1' PV panel at least stands a chance of being worthwhile.

--
Regards,
Martin Brown

On 10/06/2014 22:29, Brian Gaff wrote:

Yes i was just wondering about such a puny panel. That sounds like the sort
of cheap rubbish they used to sell with those plant turners for window
sills.
Brian

The cost of the tube of glue will probably be greater than the total
lifetime output of electricity of such a small panel. Quite a lot of the
ones on garden lamps go bad after less than two years.

And without a series diode the low grade silicon of a cheap PV will
probably ruin the battery it is supposed to be trickle charging.

--
Regards,
Martin Brown

In article ,
"Brian Gaff" writes:
Yes i was just wondering about such a puny panel. That sounds like the sort
of cheap rubbish they used to sell with those plant turners for window
sills.

I bought one from Maplin some years ago. It generated enough output to
light up the LED on it, but no more. It was sold as a 12V car battery
charger. It might have been useful to counteract self-discharge of a
stored battery, but no more.

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]

On Wed, 11 Jun 2014 07:42:20 +0000 (UTC), Andrew Gabriel wrote:

I bought one from Maplin some years ago. It generated enough output to
light up the LED on it, but no more. It was sold as a 12V car battery
charger.

Probably the same as the one I have, 5" wide 14" ish long?

It might have been useful to counteract self-discharge of a stored
battery, but no more.

In full sun it probably will charge a bit but really all they are is
self discharge eliminators. The LED on mine flashes, when it's on
there is very little on the output, the mark/space is around 1:1 so
50% of the very little produced is wasted... I must rescue it from
the garage and "get at it". B-)

--
Cheers
Dave.

In article o.uk,
"Dave Liquorice" writes:
On Wed, 11 Jun 2014 07:42:20 +0000 (UTC), Andrew Gabriel wrote:

I bought one from Maplin some years ago. It generated enough output to
light up the LED on it, but no more. It was sold as a 12V car battery
charger.

Probably the same as the one I have, 5" wide 14" ish long?

Sounds like it.
As it was useless, I pulled it apart to look inside.
I don't seem to have it anymore, so I suspect I chucked out out.
I only bought it after they'd been significantly reduced, and didn't
expect much, but it failed to live up to even that.

It might have been useful to counteract self-discharge of a stored
battery, but no more.

In full sun it probably will charge a bit but really all they are is
self discharge eliminators. The LED on mine flashes, when it's on
there is very little on the output, the mark/space is around 1:1 so
50% of the very little produced is wasted...

Yep - exactly same with mine.

I must rescue it from
the garage and "get at it". B-)

ISTR the circuit was embedded in a lump of silicone, or some such.

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]

On Tue, 10 Jun 2014 22:29:30 +0100, Brian Gaff wrote:

Yes i was just wondering about such a puny panel. That sounds like the
sort of cheap rubbish they used to sell with those plant turners for
window sills.

It doesn't take much to keep a lead acid battery topped up. An
average of just a mA or two will do it. As I found out, the problem
with a PV panel is the leakage when dark, that can be greater than
the gain when lit.

--
Cheers
Dave.

ss wrote:
I have been asked to attach a small solar charger panel for trickle
charger (maybe 6 inch square) thingy to a garage roof which has concrete
type (not slate) roof tiles.
I wont see the job until Saturday so cant be 100% sure about anything.
Whats the best way to attach it, I first thought silicone but I doubt
that would adhere to the tiles, Then I am thinking just slip the bracket
(presumably it has one) under a tile.

Any other thoughts? Could I drill into the tiles and use a small screw?
Stainless steel " meccano" strip bent into a asymmetric U shape. feed
the ends above and below a particular tile and attach the ends to the
battens from the inside making small slots in the felt if fitted.

I got my strips from Navitron and used them to fit a solar thermal array
last year http://www.navitron.org.uk/product_d...D=62&catID=121

On 10/06/2014 17:05, Bob Minchin wrote:
ss wrote:
I have been asked to attach a small solar charger panel for trickle
charger (maybe 6 inch square) thingy to a garage roof which has concrete
type (not slate) roof tiles.
I wont see the job until Saturday so cant be 100% sure about anything.
Whats the best way to attach it, I first thought silicone but I doubt
that would adhere to the tiles, Then I am thinking just slip the bracket
(presumably it has one) under a tile.

Any other thoughts? Could I drill into the tiles and use a small screw?
Stainless steel " meccano" strip bent into a asymmetric U shape. feed
the ends above and below a particular tile and attach the ends to the
battens from the inside making small slots in the felt if fitted.

I got my strips from Navitron and used them to fit a solar thermal array
last year http://www.navitron.org.uk/product_d...D=62&catID=121

They look very flimsy, has the panel been through a storm yet?

dennis@home wrote:
On 10/06/2014 17:05, Bob Minchin wrote:
ss wrote:
I have been asked to attach a small solar charger panel for trickle
charger (maybe 6 inch square) thingy to a garage roof which has concrete
type (not slate) roof tiles.
I wont see the job until Saturday so cant be 100% sure about anything.
Whats the best way to attach it, I first thought silicone but I doubt
that would adhere to the tiles, Then I am thinking just slip the bracket
(presumably it has one) under a tile.

Any other thoughts? Could I drill into the tiles and use a small screw?
Stainless steel " meccano" strip bent into a asymmetric U shape. feed
the ends above and below a particular tile and attach the ends to the
battens from the inside making small slots in the felt if fitted.

I got my strips from Navitron and used them to fit a solar thermal array
last year
http://www.navitron.org.uk/product_d...D=62&catID=121

They look very flimsy, has the panel been through a storm yet?

I used 9 of them - and had no problems. we live opposite a open space at
the top of a hill and the wind rattles the concrete tiles regularly in
the winter and the panel (30 tubes) about 2.4 sq m has stayed put.

Maybe you are thinking of the PV panel type mountings which are
considerably thicker and made from aluminium?

On 11/06/2014 18:34, Bob Minchin wrote:

I got my strips from Navitron and used them to fit a solar thermal array
last year
http://www.navitron.org.uk/product_d...D=62&catID=121

They look very flimsy, has the panel been through a storm yet?

I used 9 of them - and had no problems. we live opposite a open space at
the top of a hill and the wind rattles the concrete tiles regularly in
the winter and the panel (30 tubes) about 2.4 sq m has stayed put.

Maybe you are thinking of the PV panel type mountings which are
considerably thicker and made from aluminium?

No, I'm thinking of the ~6 mm thick 30mm x 70mm aluminium sections
holding my thermal panel.

It is adjustable for angle but I thought it was OTT.

dennis@home wrote:
On 11/06/2014 18:34, Bob Minchin wrote:

I got my strips from Navitron and used them to fit a solar thermal
array
last year
http://www.navitron.org.uk/product_d...D=62&catID=121

They look very flimsy, has the panel been through a storm yet?

I used 9 of them - and had no problems. we live opposite a open space at
the top of a hill and the wind rattles the concrete tiles regularly in
the winter and the panel (30 tubes) about 2.4 sq m has stayed put.

Maybe you are thinking of the PV panel type mountings which are
considerably thicker and made from aluminium?

No, I'm thinking of the ~6 mm thick 30mm x 70mm aluminium sections
holding my thermal panel.

It is adjustable for angle but I thought it was OTT.

Those sound much more like the sections on my PV array.
The Thermal panel is much lighter. The heat exchanger is a single 35mm
copper pipe with a litre or so of gycol mix plus 30 vacuum tubes. I
think the total weight is around 100kg.

If yours is a flat plate panel and has the ability to be angled off the
roof, it might need the strength in the wind?

On Tue, 10 Jun 2014 16:44:35 +0100, ss wrote:

I have been asked to attach a small solar charger panel for trickle
charger (maybe 6 inch square) thingy

Hum, I bought one with idea of it keeping the battery topped up on
the standby genset. Was connected for maybe 6 months, when I came to
use or maybe routine test the genset the battry was flat. After use I
left the panel disconected, similar time interval, battery fine...

OK to be fair the panel is in a NW facing window but it's little
light flashes... I guess the leakage through it when dark is not
being made up by the small amount of lecky generated during the day.

Silicone will stick it or one of the building adhesives, but will
leave silicone behind when it's removed. Stainless strip or even a
decently galvanized bit if steel withe the panal attached and pushed
up under a tile and hooked onto the batten will hold something that
small.

--
Cheers
Dave.

On 10/06/2014 20:02, Dave Liquorice wrote:
On Tue, 10 Jun 2014 16:44:35 +0100, ss wrote:

I have been asked to attach a small solar charger panel for trickle
charger (maybe 6 inch square) thingy

Hum, I bought one with idea of it keeping the battery topped up on
the standby genset. Was connected for maybe 6 months, when I came to
use or maybe routine test the genset the battry was flat. After use I
left the panel disconected, similar time interval, battery fine...

Crap consumer ones from the likes of Maplin need a Shotky diode in
series to prevent the battery charge leaking away through the low grade
solar panel silicon during the night. A 1N581x ought to do it.

OK to be fair the panel is in a NW facing window but it's little
light flashes... I guess the leakage through it when dark is not
being made up by the small amount of lecky generated during the day.

Yup and there really is no excuse for it the diode is a penny item.

Silicone will stick it or one of the building adhesives, but will
leave silicone behind when it's removed. Stainless strip or even a
decently galvanized bit if steel withe the panal attached and pushed
up under a tile and hooked onto the batten will hold something that
small.

Something that small will also be entirely useless.

--
Regards,
Martin Brown

ss wrote:
I have been asked to attach a small solar charger panel for trickle
charger (maybe 6 inch square) thingy to a garage roof which has concrete
type (not slate) roof tiles.

Does the building not have a mains supply?

Bill

On 10/06/2014 23:22, Bill Wright wrote:
ss wrote:
I have been asked to attach a small solar charger panel for trickle
charger (maybe 6 inch square) thingy to a garage roof which has
concrete type (not slate) roof tiles.

Does the building not have a mains supply?

Bill

From what I can gather the garage is 50 yards from the house and no
elec supply.

On 11/06/2014 00:28, ss wrote:
On 10/06/2014 23:22, Bill Wright wrote:
ss wrote:
I have been asked to attach a small solar charger panel for trickle
charger (maybe 6 inch square) thingy to a garage roof which has
concrete type (not slate) roof tiles.

Does the building not have a mains supply?

Bill

From what I can gather the garage is 50 yards from the house and no
elec supply.

In that case carrying a 17Ah lead acid battery down there every now and
then is probably a much more cost effective solution to whatever problem
you are supposed to be trying to solve.

--
Regards,
Martin Brown

In article ,
ss wrote:
I have been asked to attach a small solar charger panel for trickle
charger (maybe 6 inch square) thingy to a garage roof which has concrete
type (not slate) roof tiles.
I wont see the job until Saturday so cant be 100% sure about anything.
Whats the best way to attach it, I first thought silicone but I doubt
that would adhere to the tiles, Then I am thinking just slip the bracket
(presumably it has one) under a tile.

Any other thoughts? Could I drill into the tiles and use a small screw?

I'd not disturb the roof in any way. If it leaks at a later date for
whatever reason you'll get the blame. Just glue it in place.

--
*Kill one man and you're a murderer, kill a million and you're a conqueror.

Dave Plowman London SW
To e-mail, change noise into sound.

On 11/06/2014 11:03, Dave Plowman (News) wrote:
In ,
wrote:
I have been asked to attach a small solar charger panel for trickle
charger (maybe 6 inch square) thingy to a garage roof which has concrete
type (not slate) roof tiles.
I wont see the job until Saturday so cant be 100% sure about anything.
Whats the best way to attach it, I first thought silicone but I doubt
that would adhere to the tiles, Then I am thinking just slip the bracket
(presumably it has one) under a tile.

Any other thoughts? Could I drill into the tiles and use a small screw?

I'd not disturb the roof in any way. If it leaks at a later date for
whatever reason you'll get the blame. Just glue it in place.


Thanks for the replies all. Yes it probably is a crappy charger but he
already has bought it but cant work out how to fix it. I will get out
there and probably find he has a window in the garage and he can just
sit it on the window sill :-) He has a 1st class honours degree in
mathematical physics but can hardly use a flippin screwdriver.

In article ,
ss wrote:
He has a 1st class honours degree in
mathematical physics but can hardly use a flippin screwdriver.

And doesn't know much about solar panels. The quoted output of this sort
is usually a peak one. The average often close to zero. Maybe even a
negative in practice.

--
*Why does the sun lighten our hair, but darken our skin?

Dave Plowman London SW
To e-mail, change noise into sound.

ss wrote:
I have been asked to attach a small solar charger panel for trickle
charger (maybe 6 inch square) thingy to a garage roof which has
concrete type (not slate) roof tiles.
I wont see the job until Saturday so cant be 100% sure about anything.
Whats the best way to attach it, I first thought silicone but I doubt
that would adhere to the tiles, Then I am thinking just slip the
bracket (presumably it has one) under a tile.

Any other thoughts? Could I drill into the tiles and use a small
screw?

A solar panel that small is pretty much useless - it would charge one 600mah
AA battery on a very sunny day, and on a cloudy day it wouldn't even do
that.
Those garden solar lights have a 2 X 2 inch panel and one rechargeable
600mah AA battery and usully one small LED bulb and they don't even stay lit
all night

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On Monday, May 7, 2018 at 12:16:00 PM UTC+1, wrote:
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On Mon, 07 May 2018 05:13:13 -0700, George Miles wrote:

There are some very clever people on this UK DIY newsgroup who know how
to wreak revenge on spammers like these Australian roof doctors ....

On Monday, May 7, 2018 at 12:16:00 PM UTC+1, wrote:
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professionals at Roof Doctors provide the latest technology to
re-Bedding the tiles, applying the primer and and also painting the
roof as part of the service to ensure the best possible result with
cheap price.
For more details contact at: https://goo.gl/fCuY7Z

Even more who don't even see the SPAM until some {*****} feels bound to
reply to it.

Something something something Trolls.

--
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