steveb21

Blocks > Stepoc | Structural Products | Anderton Concrete I really dont want to push more than 115mm. "100mm PIR/ vcl/ stud/ 25mm service void then 1 layer plasterboard." Above would take me nearly to just under 200mm. Really do not want to lose that much space. Would 100mm PIR glued against the walls VCL Plasterboard > fixed onto the PIR Skim What the glue hold things up? I am not planning on attaching anything heavy to the walls. I will have to run service/electrical points via cut outs on the PIR.

Its been tanked for a while and has been dry. Approx. 6 months. Area size is 9x6m - so just over 50m2.

The basement will be a living space. Bar, sofa, tv, office. It will be heated. Floor slab has 100mm of rigid insulation. There will be UFH at 150mm spacing with screed. I dont think keeping heat in will be much of a issue, over the winter it was surprisingly not that cold down there. Trying to keep an eye on moisture control.... will have trickle vents in 3 windows, couple of extractor fans and if needed a dehumidifier. Other option I proposed was Metal stud (50mm) installed slightly off the wall - floor to ceiling Metal stud filled with insulation wool bat (50mm) Vapour Control Layer 37.5mm insulated plasterboard (25mm insulation board, 12.5mm plasterboard) Skim I am not sure about using the insulation batts so close to the walls though.

Basement build with specialist infilled concrete blocks - 325mm wide, filled with rebar and C35 concrete. Basement is 2/3 in ground, 1/3 above ground. Internal wall and floor has been tanked using KA tanking slurry. No external insulation - this was not possible due to space restrictions. What is suggestion for wall insulation? I was planning to: >> 50mm XPS Foam glued directly to basement walls > 50mm Expanded Polystyrene EPS70 Insulation Board 2400mm x 1200mm (8′ x 4′) | Insulation Wholesale >> 50mm Metal stud in front, attached floor to ceiling > Metal C Stud Partition - 10 Pack | Steel Framing - Fast Build (fastbuildsupplies.co.uk) and MF Ceilings - Suspended Drop Ceiling Systems - Fast Build (fastbuildsupplies.co.uk) >> Metal stud filled with insulation mineral batts (these would fit nice and snug in between the metal studs) >> Vapour Control Layer >> Plasterboard >> Skim Thoughts please?