dpc under concrete shed base

Damp proofing a concrete slab. thread starter spacehopper383; start date apr 25 apr 25, 2010 #1. i'm in the process of laying a concrete slab for the base of a outdoor store with two compartments. one for storing my daughters play equipment and the other for storing chopped wood for the wood burner. i've got a roll of dpc to lay under the. The only way to avoid it completely would be to lift the shed on concrete blocks or tiles so that the base timbers were high enough to be clear of any sitting water. 99% of sheds i have seen are sited exactly as yours is, including my own which is now 16 years old if the base timbers are tanalised, you should have nothing to worry about.. Talk to me about how to make a concrete shed base please. sand around the edge of the rubble/concrete base? rain water/shed wall run off landing on the slab and pooling under the shed. Foundation depths and dpc. discussion in 'building i'll be putting down the damp proofing sheeting under the concrete floor in the shed, is it normal to fold this sheeting up at the edges and use as the dam proofing course for the blocks or should a separate dpc be used for the blocks? top to dpc level,oversite fill in with reject or. Concrete shed base questions someone told me that the base should be slightly smaller than the shed so that rain water runs down the walls and then down the sides of the slab..

The only way to avoid it completely would be to lift the shed on concrete blocks or tiles so that the base timbers were high enough to be clear of any sitting water. 99% of sheds i have seen are sited exactly as yours is, including my own which is now 16 years old if the base timbers are tanalised, you should have nothing to worry about.. It sounds as though your shed is sitting on a base that is bigger than the shed, the walls of the shed should over-sail the base, or be raised off the base so it does, one thing you can try is to obtain a large recking bar and lever the shed up to allow you to put silicone mastic (bodge job) or a row of bricks with a dpc under the timber walls, in the past i have successfully used concrete. Concrete shed base questions someone told me that the base should be slightly smaller than the shed so that rain water runs down the walls and then down the sides of the slab..