Our Self Build Insulated Reinforced Raft Slab - Isoquick - In Slab Drainage - Passive House

Video Description

After getting the subbase done, it was time to install our Isoquick insulated foundation formwork. Ellie and I cannot recommend Isoquick enough, incredibly professional, kept it simple and provided solutions and advice. Fine Tolerance Flooring did an incredible job of installing the rebar and pouring the concrete, Alex, Justin and the team were a pleasure to have on our build. An incredible amount of work goes into an insulated slab such as service ducts, underfloor heating, drainage, damp proof membranes and thresholds for windows and doors, but it has now given us a solid, flat and thermal efficient base to build our house on. https://www.instagram.com/turning.rosemount.upside.down?igsh=b3RhZHQ1M3p6aDFp&utm_source=qr 00:00 Sub-base done; Isoquick infill delivery 00:10 Moving slabs with a £60 pump truck 01:10 Wall units arrive; numbered map system 01:55 Zero-waste layout in 50 mm increments; thresholds 02:56 Assembling wall units; locking together 04:42 Squaring up: diagonals & tweaks 05:17 Supplied tools: hot-wire cutter & hole saws 07:49 First impressions; 300 mm insulation + 300 mm stone 08:28 Missing items; Gary completes install 08:45 DPM/radon barrier laid & taped 09:07 UFH plan: PEX-AL-PEX, invert/rotate layout 10:26 UFH clipped; rebar team takes over 10:59 Why we hired pros; nuclear-grade slab guys 12:27 Manifold hookup & pressure test prep 14:21 Drainage in slab: solvent-weld, falls, boxing 15:50 Pre-pour under shower boxes; seal entries 18:10 Pour & finish; next-day water test 19:05 UV/mech protection: polymer render + mesh 19:35 Backfilling; last rendering at front door 19:49 Raft slab complete; next up: eco brick walls