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Options for insulating up and over garage door

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Stuart Bridger13/12/2014 10:05:11
566 forum posts
31 photos

My workshop is an a single garage with a single skin aluminium up and over door. Any ideas for the best way to insulate? I don't want to add too much weight or additional thickness to the door, and it still needs to function. 50mm Celotex seems one option, or perhaps bubble foil secured with battens. Another slightly off the wall solution would be to panel the door with a thin sheet and then fill the gap with expanding foam? Any suggestions would be appreciated.

JasonB13/12/2014 10:15:11
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25215 forum posts
3105 photos
1 articles

I used Celotex on mine.

Bob Brown 113/12/2014 10:19:43
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1022 forum posts
127 photos

I would use Celotex and I would use one thickness to infill the panel and then may be overlay with another layer, I would stick them on using the foam as used to attach plasterboard to walls e.g. this stuff **LINK**

If you try expanding foam on it's own you'll probably get in a right mess as it is sticky stuff and does not come off very easily.

Do not forget to seal around the door with a weather strip.

Bob

Andrew Johnston13/12/2014 10:20:35
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7061 forum posts
719 photos
Posted by JasonB on 13/12/2014 10:15:11:

I used Celotex on mine.

Me too - Andrew

Stephen Benson13/12/2014 10:29:38
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203 forum posts
69 photos

Does that help or hinder condensation? my guess is it would would increase humidity but it would be nice to know

mechman4813/12/2014 10:44:57
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2947 forum posts
468 photos

I have a roll up panel door & I have used 25mm Celotex/similar panels to infill each panel with Duct tape covering the joints, plus have used a panel stuck to the entry door, all attached with ' No Nails' adhesive ( usual disclaimer ), certainly makes a difference to the temp, plus other Celotex panels behind the OSB boarding on the walls & space blanket in the roof area. Last nights temp was - 3* outside, inside the garage is + 6*... nicely above dew point, An hour with the 2 oil rads on - one at ea. end & it gets up to a comfy 14* - 15*C ( approx 58* - 60* F )... weather strip around the door frame & compressible strip on the bottom... sorted. Will check again later today as it's forecast to be cold all day.

George

Edited By mechman48 on 13/12/2014 10:47:28

Stuart Bridger13/12/2014 11:39:17
566 forum posts
31 photos

Thanks all , looks like Celotex is the answer then.

Edited By Stuart Bridger on 13/12/2014 11:39:36

mechman4813/12/2014 11:52:07
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2947 forum posts
468 photos

A couple of pics of door insulation...Panels are foil covered both sides

insulation (1).jpg

Entry door...

insulation (2).jpg

Some floor covering.. still need more, which would raise temp up another degree or two..& one of the oil rads..

insulation (3).jpg

Outside temp 1*C (Lunchtime..according to local area website).. inside temp.. 4/5* C

Inside temp. (4).jpg

George.

Edited By mechman48 on 13/12/2014 12:21:22

Bazyle13/12/2014 14:09:19
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6956 forum posts
229 photos

After fitting the celotex either completely seal each section with tape as above or use expanding foam ato effect a complete seal in the awkward corners where tape won't work. If you leave even a small hole moist air goes in, condenses and more goes in building up a significant amount of water that must then wait until summer to evaporate.

Circlip13/12/2014 16:08:34
1723 forum posts

VW used to think injecting foam between the wing panels on the original injected "Passat" was a good idea too. Proved to be excellent at rotting the panels. A decent coating of a bituminous paint or even Waxoyl (can you still get these??) onto the metal before bunging on the foam panels may help.

Regards Ian.

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