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I may have been a little enthusiastic with my floating floor insulation for the Little Brown Bungalow, and I now need some shorter than normal doors. A classic oversight. The arithmetic is that I have specified 50mm Celotex between 36.63mm battens on their side, them 18mm OSB, then underlay and a floor covering (laminate, engineered wood, vinyl or carpet depending). That equals a need to cut off approx 63+18+10 = 90-95mm, plus any air circulation gap I decide I need. There are 6 doors. The plan had been to go with Geneva or perhaps Shaker style oak veneer doors from someone like Todd Doors, where they can be bought for £60-80 inc. VAT. Existing doors are standard imperial 1981mm height. So without butchering the doorframes, and I do not plan to go there, that means I need doors which can be trimmed by almost 4 inches, or find a supplier of shorter or custom doors, or reduce the floor depth. Options seem to be: 1 - Bespoke eg pine doors. These seem to start at £150-£200, so are probably a non-starter. 2 - Find some doors at OK prices which can be trimmed to about 1890mm, or by 90mm. The best I have seen so far are the Todd Doors' doors which can typically be trimmed by 50mm base and 12mm top = 62mm total. 3 - Use slab plywood doors trimmed as needed and recapped. The bungalow had slab doors before, but I was planning on a more upmarket feel. 4 - Reduce floor thickness - could be done by using 36x63mm battens on their face not their edge and 25mm Celotex not 50mm. That would give me an additional floor depth of 36 + 18 + (8 to 10) which can just squeak under the 62mm cutting limit of the Todd Doors. I would need to store or sell the pallet of 50mm Celotex sheets I have already purchased, and buy 25mm. I will have a use for the other within a few months. Any comments - particularly for trimmable doors - would be welcome. I need to decide this over the weekend at the latest. Ferdinand