MDF Load Capacity

leveller2911

Lil306 wrote: »

What is OSB?

Sorry I don't know my wood

Sorry I should have clarified its Oriented Strand Board, it looks like large compressed wood shavings, don't get confused with chipboard which is small fine woodchips.

Marine ply and Birch faced ply would be better buy they are very expensive .

scheming_gypsy

OSB is the stuff they board windows up with.. it's pretty cheap and strong so when covered with creosote it should be fine.

tony6403

Leif wrote: »

I would not use chipboard as it loses its integrity when wet. MDF is not so great when wet either. I suppose you could paint/varnish it, which might suffice, but I would go for solid treated wood, or plywood. I suppose if you use MDF, make sure it is easily replaced if need be.

If you look at the sheds sold by B&Q etc they are made of treated softwood.

If the shed is properly constructed the floor should not get wet.
With that proviso, OSB or flooring grade chipboard would both be good choices. Budget end sheds from the likes of B&Q have OSB flooring ( I erected one three weeks ago for a friend )
MDF does not appear to be easily ruled out - here is an extract from a supplier's report:-
"Compared to many other wood based materials MDF has a higher bending strength, a higher perpendicular tensile strength and excellent screw holding properties. The mechanical load bearing capacity and resistance of MDF are higher than those of conventional chipboard."

Lil306

Thanks, I originally wanted MDF to do it on a budget lol. Since it's only for storage and I can get most of the wood free from work

I would have thought creosote/tar and felt would have kept the shed fairly waterproof