New garage

Ad does not mention it being fire resistant EPS. Even the fire resistant stuff needs to be covered though.

Polystyrene board - This is the last thing you want to be using - its fragile and whilst it provides some insulation value has an insulation board it is highly flammable - you need to be using a rigid insulation board - it's lightweight, cuts easily & gives very high insulation values and meets fire regulations - the catch is it can be very expensive - I recommend something like a 60mm - 80mm thick insulation board and it can fitted in a couple of ways. If you have the space externally you could place vertical timber battens to the block wall at equal centres - cut and fit the insulation board between the battens (friction / interference fit) then clad the building has you originally planned but you have then increased the external depth of your walls / foot print by circa 100mm - its fine if you have the space to do it and is an accepted building practice - I would however strongly recommend that you fit a breathable membrane (such has Tyvek) to the battens prior to fitting the cladding regardless of insulation route that you take.

The other option is clad the insulation to the internal walls - again if you use the batten method has explained for the outer walls - with insulation fitted between the battens - you could then if you wanted to board over with either plaster board or ply sheet to give you an internal wall finish that you can paint - there are also insulation boards available that are pre faced but these come at yet more expense.

So just the cost issue to address then - well you could have a measure up and price the board from a large DIY chain, or go to a local builders merchant and have them price it up for you either way - Wickes price for a 2400mm x 1200mm x 75mm is currently £47 - a rough & quick guesstimate says about 60 sqm for your walls which is 20 boards = £940 that's excluding the roof and what's the point of doing the walls if you are not doing the roof you are probably going need upwards of 35 number 2400mm x 1200m insulation boards at Wickes prices that's £1645 +

The moneysaving answer is to trawl this website to find what you need - they specialise in returned slightly damaged boards and then sell them has a bundle / palleted deal - For instance: Pallett 403 is non foil backed 70/80mm thick sheets x 32 number @ £330 + some transport cost - even if it's £500 delivered it's a massive saving over what you will pay elsewhere

www.secondsandco.co.uk/shop-c15sh

Good luck with the build and please keep us all updated - Chris

Check your local salvage / reclamation yards, a while ago I got 100+ 2x4 sheets of 60mm foil backed celotex for £50 (ex-school ceiling tiles), less than 50p each   

The place below was recommended to me but I've not used them, maybe worth looking into? www.secondsandco.co.uk/

I spoke to the site manager of a local housing development regarding who clears their sites when phases are completed, he gave me the details of the bloke who clears everything, wood, bricks, blocks, insulation, the lot. I called him and got enough 50mm celotex to do my loft and garage for two pounds a strip ( each strip being approx 4' x 2'). Worth a try.

Have used secondsandco on 2x roofs now (5m x 3m bike workshop and 17m x 7.5m toybox). Great people to deal with &, last time I was there, only £30 delivery across UK main postcodes (may have changed since, though). Seriously worth a look.

OOOOkay. Further on now.



Starting on the roof. Still havn't fallen on what, if anything now to stuff into the walls. Hopefully to cover a few of the points raised/asked,It'll never be toasty warm or 'owt. It is me addressing the "gift" of spending £100's on a token gesture to keeping in a bit of heat (two normal rad's with 300w elements in)and more keeping in a bit of noise now we live in town. I honestly think it will be a very small nod towards modern insulation because something is better than nothing. Out in the 'Dales where we used to be, noise wasn't a problem, but cold was. I found some closed cell sheets which were fitted in between trusses and the difference was night and day regards heat retention. I picture this in my very small space reserved for thinking along side the aga/storage heater principal. Small heat source and very well insulated (not anywhere near in this case I know)thereby compounding the heat.
Regards the block work. It's just to make the building more substantial.
Thanks

Still just managing to get out between work and weather.



Seconds & Co, as mentioned/recommended above, came up trumps with the insulation.Odd size but works. 1200x1200 and 30<50 taper. Turn them back to back and we're at 80mm thick. Nice.

Hi Bazz,
Yup, it was me who recommended them to you - glad to see it was of use. You stil down at Vauxhall or over at pastures new?

Finished the cladding. Got the personnel and main door fitted.Wood preserver from Smith and Allen to go on once the wood has dried right out.



Main target to date has to make it bird proof as much as possible, didn't want to have to wait for swallows or swifts to move out.
Thanks