insulating my rafters

Poppycat

Yes I had a look and couldnt find it. I did ring around first beofre I got it, I got some free Kinspan from my brother in law for the attic but needed more, so I rang jewsons they dont stock it but sell a similar item, I needed the same stuff so rang mkm and they had it on stock this was almsot 2 years ago though so maybe is changed.

They also make the stuff near where I live, Sherburn just 15 miles away

Mikeyorks

Merritt & Fryers (Skipton) also stock Kingspan. Only bought 8 x 4 sheets so can't comment on the price. But it's very easy stuff to cut with a hand saw - so that might be the most economical way to buy it.

But not easy to transport in a car at that size!!:rolleyes:

jonnyw_2

If you are going to plasterboard it, gypsum do a plasterboard backed with insulation so you could consider using this as well/instead.

If you use insulated plasterboard instead of insulationg between the rafters then you are not cutting down on the area for air circulation.

Poppycat

I went into mkm builders today I notice what looked like Kingspan to me on a very high shelve about 25ft. I couldnt see for sure but certainly was something similar if not Kingspan.

Its a nightmare in there trying to get prices I went in for some wood but came out to wiser as I couldnt get prices and couldnt keep coming and going asking at the counter what does this cost etc? as I need several different types/sizes of wood.

Doglover88

sourced some 50mm thick boards, 4x8' about £18 each delivered (11 boards for £202) going to mount them flush with the face of the rafters, using a small piece of batten mounted 50mm back to stop it falling back to the tiles/felt. Been told I should fix some sort of DPM between the Kingspan and the plasterboard is this recommended?
Any will any DPM do?

plumb1_2

On site today, there was/is 8 full sheets 8x4 in the skip, wish i had built that doudle garage now.