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Damp Proofing

Wet floor issues, 2 months after damp proofing.

Anonymous user 28/02/2024 - 3.46 PM

We're having serious water issues along a wall that was treated by a specialist two months ago. Now, a few weeks after fitting the floor, the board closest to the wall is wet and badly damaged. Our specialist re-visited yesterday, and confirmed that the treatment was appropriately injected. I asked why this was done above (not below) existing floorboards, and he mentioned the treatment must begin above ground. And that as long as the floor does not touch the brickwork, all should be ok. But, we have confirmed that the floor IS floating - there are no cases where floorboard, fermacell, or engineered wood contact brick. However, the skirting which has been in place for 2-3 weeks is saturated and moldy. It appears that the wet coming through the plaster (below injection point) is passing moisture to skirting and then onto the wooden floor. Has anyone seen this before? How should we proceed? We've scheduled a second opinion. But, we're meant to move in (with an infant) in the coming days - so, keen to resolve ASAP. Is there a membrane we can apply to ensure flooring elements are protected? At present, it appears that our damp proofing only protects the wall

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4 Answers

ADR Property Maintenance

Rating: 5 out of 5

Boston

injected damp proof course only protect against rising damp , they do not solve penetrating damp if the out side ground level is to high you need to lower it by 150mm below the floor level, this can be solved by installing a french drain. good luck ale

Answered4 December 2019

Golden construction

Rating: 5 out of 5

Northwich

If the damp is coming through from outside this should be plain to see and fix If the new floor has been layed on top of an old concrete floor this to would be plain to see How ever if it’s a new concrete floor the the membrane has not been glued to the wall with damp adisive Also check for up stand in concrete floor and that the plaster dose not come down to the floor (I find that damp should be treated in the first wet course below doc but never above injection needs moisture to work Please phone 07814851366 regards golden construction

Answered7 December 2019

Anonymous user

To go one step further a product called storm dry can be applied to the outside brick work to aid the reduction of penetrating damp also if it is a wall with a cavity it could be that there is a lot of cement waste from the building .of the wall and again this can cause transferance across the cavity if

Answered8 December 2019

Anonymous user

Hi, a damp proof injection should always be injected below the level of the finished floor and plaster stripped around 1m high on the wall then new plaster render but onto the wall with water proofer added , also if the ground level outside is above floor level a drain should fitted along the wall to take any water away . Thanks Paul

Answered9 December 2019