New shed - what floor?

Author
Discussion

Humpy D

Original Poster:

628 posts

202 months

Wednesday 19th August 2009
quotequote all
Going to replace my old shed (6'x6') and wondered whether I should raise the new shed off the floor by sitting it in 4x2 timbers (or similar) so that the shed floor doesn't get wet and rot. The shed will stand on a patio.

When I called the shed people they said that there is no need to do this but my father-in-law said I should.

Thoughts?



King Herald

23,501 posts

223 months

Wednesday 19th August 2009
quotequote all
Humpy D said:
Going to replace my old shed (6'x6') and wondered whether I should raise the new shed off the floor by sitting it in 4x2 timbers (or similar) so that the shed floor doesn't get wet and rot. The shed will stand on a patio.

When I called the shed people they said that there is no need to do this but my father-in-law said I should.

Thoughts?

I'd raise it on timbers, as like your FIL says, it will get wet and rotten eventually. Not the first year, but a few years down the track it definitely will.
Maybe three or four 4 x 4 pressure treated fence posts would do the trick.

jonnylayze

1,640 posts

233 months

Wednesday 19th August 2009
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either sit it on timbers or, even better imo sit it on some additional paving slabs or breeze blocks which will get it up off the surface of the patio. Concrete would be better than wood because even sitting it on timber, the damp can go up through the timber.

My shed sits on top of some damp proofing PVC stuff (available from builders merchants) with breeze blocks underneath. This ensures no transmission of damp up from the ground. The Dp was nailed to the underside of the floor joists before I assembled the shed.

King Herald

23,501 posts

223 months

Wednesday 19th August 2009
quotequote all
jonnylayze said:
either sit it on timbers or, even better imo sit it on some additional paving slabs or breeze blocks which will get it up off the surface of the patio. Concrete would be better than wood because even sitting it on timber, the damp can go up through the timber.

My shed sits on top of some damp proofing PVC stuff (available from builders merchants) with breeze blocks underneath. This ensures no transmission of damp up from the ground. The Dp was nailed to the underside of the floor joists before I assembled the shed.
Breeze blocks are a good idea, but don't they wick water up like sponge? The damp proof membrane will stop that though.

Simpo Two

87,030 posts

272 months

Wednesday 19th August 2009
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I used gravel boards, and set slightly in so there's no ledge for water to sit on.

cjs

10,933 posts

258 months

Wednesday 19th August 2009
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I used 2"x2" treated timbers, laid them lengthways so that there was an airflow to keep things dry. Had no damp problems in 12 years.

Edited by cjs on Wednesday 19th August 17:18