matt-shrops

brought mine from Hyt-ten in Wolverhampton. Cheapest I could find and delivered.

@ProDave where did you buy your woodfibre board from - I have had a look at SIG and don't think sell it, well not yet! 100mm stuff must be expensive but guess you saved using frametherm rather than warm cell?

Thanks @Big Jimbo, 600 centres with 300mm I Joists.

@Big Jimbo can I ask where did you get the rockwool from and what type was it? Were they any problems fitting it around the flanges of the IJoists. I have come to a similar conclusion as yourself- Warmcell for the roof and DIY for the walls. Trying to workout the best solution for the walls but have time to think as they are not up yet!

How much was the vapour shield OSB and any prices for wood fibre board? I have been looking and for 50mm woodfibre board it is around 4 times the price of OSB3.

that looks good stuff! Will try to find out how much it is.

Getting close to putting the sole plate down. Trying to work out the best method. 300mm I joists will sit on the sole plate. The sole plate is 150mm on the concrete slab and 150mm on the perimeter XPS insulation. Couple of details I am unsure off! 1. the level of the concrete and XPS differs by a few mm in places- what is the best way to ensure this is sealed and insulated? Have thought about something like compriband to seal it. 2 DPM- where is the best place to fix it. I have a DPM that the XPS sits on and comes up the outside of the XPS and I used a DPM under the concrete slab that comes up the inside of the XPS. Do I need a DPC under the sole plate as well? The sole plate will be 49mm LVL possibly sitting on 36 x 89 treated timber with insulation in the gap. Thanks Matt

Good morning all. After a busy few weeks I now have the 260mm of insulation down ready for the reinforcing mesh and bars then the concrete pour a week on monday. To stop the insulation upstand from moving and while the concrete is poured I am considering moving some soil or stones against it. The DPM will be wrapped around the insulation. What is the best material to use to protect the DPM and insulation from the soil/stone? I have wondered about paving slabs, or some sort of weather proof board? Ideally once down in will remain in place! And is there a better method of keeping the insulation upstand (200mmx200mm) in place ? It will be stuck down using low expansion foam. I will upload some photos of my work so far! Many thanks!!

Evening All, I have ordered Jackodur XPS PLUS 260mm which will have a 200mmx 200mm upstand foam glued on.

I have looked at Nulok to- also not far from Birmingham so might follow in your footsteps !

Mine is 115m2 with 47m of upstand. Quotes below: Polarwall Atlas System (U 0.10) £7855. DIY (cut and glue) (U 0.95) £5370 but with "shaped" boards Kingspan DIY (U.10) around £6000 depending on supplier Fibran XPS DIY (u.10) £4680 ISOQUICK (U.09) £8053 (u.11) £6886 Styrodur DIY (U.10) £4628 DOW Floormate DIY(U.10) £6306 Stylite 300EPS DIY (u.10) £3962 Jackodur Plus DIY (U.95) £3792 AFT System (EPS) (U.10) £8082 All prices plus VAT(reclaimable)

oh, did you have the ATLAS system ? Looks very good but unfortunately about 2K more expensive than cutting and glueing the upstand.

Polar Quote was OK- £140 m3 for the Jackodur Plus board which has an excellent value of 0.027. Also found Jackon UK that has given good quotes on Jackodur XPS to. Insulation4less have Fibran XPS at a similar price to- 100mm at £12.50m2

Unfortunately Insulation superstore have suddenly increased their price from £69.90 a pack to £141 a pack... blaming a price increase from the supplier. Back to the drawing board!

did you buy anyXPS Plus?