Garage Insulation

[Tully]

Hi, May I please ask some advice, really want to move this on. I have a garage which is attached to the house but is single brick on two sides and very cold even in our mild winter last year. I wish to insulate walls for this year and I have be told to put a plastic sheet on the wall than to batten and than put on sheets!
I am a female widow and I don't know the technical or product names can someone run through what I need to do, I am fairly practical and logical at diy just get a bit nervous at the counter when trying to get advice, thanks Tully.

 

[r1flyguy]

Hi Tully

Depending on what your using the garage for and where you most susceptible to heat loss which I'm guessing is your garage door, you have various options.

Batten the wall and have insulated/celotex type boards fitted within and then plasterboard over

Have insulated plasterboard applied to the walls and maybe a radiator linked to your home central heating.

But all this will be a waste of money if the ceiling is not boarded & insulated and you garage door has large gaps and is of the single metal plate type.

I'm sure others will be along shortly to offer better options for you

 

[Tully]

Thank you for the advice, the loft space is lagged and the garage is going to be used for general storage, before I batten onto the single red brick walls should I seal them? Have been told to use a plastic sheet surely its more than this and will it not sweat?

 

[Tully]

Sent from Tully

 

[r1flyguy]

I've never personally heard that and sounds like a way to trap moisture and create more problems! It certainly would not be how I would do it that's for sure.

Hopefully someone can advise you further

 

[Newboy]

Adding insulation won't make the garage warmer - insulation slows heat loss but that assumes that the garage is heated in the first place!

 

[Tully]

Hi, May I please ask some advice, really want to move this on. I have a garage which is attached to the house but is single brick on two sides and very cold even in our mild winter last year. I wish to insulate walls for this year and I have be told to put a plastic sheet on the wall than to batten and than put on sheets!
I am a female widow and I don't know the technical or product names can someone run through what I need to do, I am fairly practical and logical at diy just get a bit nervous at the counter when trying to get advice, thanks Tully.

Please can someone help advice please

 

[Newboy]

Without a source of heat and extensive insulation it will always be cold.

Why do you need the garage to be warm?

 

[^woody^]

Insulating just the walls is a waste of time money and effort. The main reason is that you can't insulate an unheated space, the other reason is that the floor roof and door are uninsulated, so even if you installed a heater, heat but will be flying out through them.

 

[Tully]

Hi, perhaps if I ask the question in a different way.
HI have a garage which is attached to the house but is single brick on two sides I wish to put ply on the walls to fix things to and before I do so want to put insulation between ply and the single brick wall how do I do this please.
I have be told to put a plastic sheet on the wall than to batten and than put on sheets!
I don't know the technical or product names can someone run through what I need to do, I am fairly practical and logical at diy just get a bit nervous at the counter when trying to get advice, thanks Tully.

Read more: http://www.diynot.com/diy/threads/garage-insulation.462457/#ixzz4DfvzJdbC

 

[endecotp]

I wish to put ply on the walls to fix things to

Plasterboard would be a better choice than plywood for fire safety reasons.

want to put insulation between ply and the single brick wall

Why do you want to do that?
It will not make the garage measurably warmer.

 

[^woody^]

Hang a DPM (thick polythene sheet) on the wall. Include 200mm floor and ceiling overlap.
Fix tanalised (treated) timber vertically to the wall 600mm apart with screws and wall plugs. Thickness to suit your chosen insulation
Insulate with chosen insulation between the timbers
Fix your 1200mm wide plyboards to the timbers with screws every 300mm
Trim the poly sheet.
Seal all joints and perimeter with mastic caulk

If you want to hang things, fix horizontal timbers in the appropriate places before boarding

 

[SFK]

Agree with above (woody) on the method. The following link is someone doing similar to a Victorian house wall (note that they put in the DPM between the insulation and plasterboard, but I do not know best method). Also I would use plasterboard rather than plyboard as cheaper and I feel a nicer finish.

Ignore beginning and start reading where it says "Insulating the external wall, The plan for insulating the wall was to:"
http://jack-kelly.com/insulating_our_victorian_living_room

sfk

 

[Tully]

Dear Woody and SFK, thank you for walking me through the process this is exactly the information I needed and makes it clear to me now, thank you for taking the time to explain it all. xxxx

 

[SFK]

Our pleasure.
If you want to budget it out may I suggest wickes (not saying to buy there, but I find their search engine quick and useful to get quotes). Note their extra shipping cost for big items.
Lookup:
Celotex http://www.wickes.co.uk/search?text=celotex
Sheet materials (you want Plasterboard (cheapest/weakest for hanging), OSB (mid point), or Plyboard (expensive/strongest for hanging) http://www.wickes.co.uk/Products/Building-Materials/Sheet-Materials/c/1000174
Treated Sawn wood for the battons (eg use the 25mm thick, 35mm wide for if you use 25mm thick insulation (which is a bit thin) http://www.wickes.co.uk/Products/Building-Materials/Timber/Constructional-Carcassing-Timber/Treated-Sawn-Timber/c/1000202?q=:topSellers&text=#
Hammer Fix / Frame fix screws (you drill a hole through batton and into wall, put the frame fixing through batton into hole, and then hammer in screw, but the box of 50 as you need 4 or 5 per batton): http://www.screwfix.com/c/screws-na...gs/cat840010#category=cat840010&sort_by=price
DPM http://www.screwfix.com/c/building-...anagedredirect-_-building-_-dampproofmembrane

Note that as celotex and sheet materials are both same size (2400mm by 1200mm) so you will need about same number of each.

And as said by others, insulation will not make the room warm (or cold) it will just keep the interior temperature for longer. So you will need a heater of some sort. In garage I have used an oil filled heater as no exposed elements, no noisy fan and normally has thermostat and frost guard.
http://www.argos.co.uk/static/Search/searchTerm/oil+filled+heater.htm

Finally, what about floor. This lump of concrete is connected to the World, so can be near impossible to heat, so do not overspend on walls if floor will be biggest heat loss.
sfk