Insulation on top of suspended wood floor?

[JP_]

If an old 1930s house has reasonable ceiling heights, do you think it would make more sense to insulate the floor above the floorboards, rather than take them up and insulate below? Would this also better prevent moisture going from house to wood? If Celutex style boards are used, and all sealed, and tongue and groove chipboard flooring laid on top, all fixed down nicely, would this be both an easier and cheaper solution, and possibly more effective? Or would the cost of refitting doors (although, none of us tall!) moving skirting boards etc. outweigh the cheaper solution? Also thinking, might make an underfloor heating system a better solution is laid on top ...

 

[Doggit]

Interesting reasoning, but far better to insulate under the flooboards. Trying to get the skirting boards, and the doors, plus the external door cills and everything up to the new level, will do your head in. You can get spreader plates to go under the existing floorboards when you lift them to put the insulation down.

 

[chappers]

why do you want to insulate between floors, if its for insulation reasons, rather than acoustic, then don't bother put it in the loft.

 

[JP_]

not between floors, just the ground floor.

 

[chappers]

Oh I see, then sorry get the floor up, sounds like pure madness to put it over the top, you will have to do the whole house, what about internal doors external door thresholds bottom of stairs, all skirts and archs will have to come off, looks like your rads will end up touching the floor.

 

[JP_]

Yeah. Cheers. Surveyor done his surveying, and said it's actually not that bad, no obvious signs of damp problems. The north facing bedroom has had a stud wall put up on the outside, so hopefully this is so some extent insulated. And apparently tons of insulation in the loft.

 

[Tigercubrider]

1930's house should have dpc , suspended floors with airbricks and cavity walls?

 

[JP_]

According to the surveyor, it has suspended floors with air bricks (although not as many as current standards recommend) and solid walls. I didn't ask about DPC. The report should be ready next week.