Keith Dunbar wrote:

I want to screw down these planks and make the floor more stable - but -
what should I do for insulation? Do I raise each floor timber so I can put
say 2" more insulation under the floor? Do I cram in 2" more insulation to
the existing space? How should this situation be approached - given that
funds are quite tight and I'm not really looking to spend much. I suspect
some sort of compromise will be the answer - but what?

Cheap answer is just screw down what you have. Better answer would be
PIR foam boards say 50mm thick laid over the joists, and the boards
screwed through them. The boards would probably cost £10 - £12 or so
each though (for a 2440x1220mm one).


--
Cheers,

John.

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