Blockages under suspended floors are caused by rubble and arisings left behind after some form of construction by a contractor or someone doing diy.
Damp proof membrane under suspended wooden floor.
Hi we are currently renovating a 1930 s semi.
Assuming that the damp proof membrane dpm under the concrete has failed in areas then yes you possibly would get the odd patch of dampness showing in the floor.
Damp rising through concrete floor slabs is fairly common causing damp issues on carpets and floor coverings warping wooden floors and increasing the likelihood of low level mould growth.
This barrier is intended to stop moisture passing from one to the other.
If there was no dpm i would suggest a uniformal distribution across the whole floor.
This can happen under both timber and solid suspended floors.
The damp proof membranes used during construction of concrete floors are often thin and can easily become torn before they are laid rendering them.
Effectively a thick plastic sheet a damp proof membrane dpm is used to create a barrier between a concrete or screed subfloor and a wood floor.
Mainly solid sub floors such as concrete.
Damp proof membranes dpms a damp proof membrane or dpm is a waterproof barrier that s introduced between your sub floor and your wood floor.
Effectively a damp proof membrane dpm is used to create a barrier between a concrete or screed subfloor and a wood floor.
In his latest article on damp in buildings michael parrett looks at the problems caused by blockages under suspended floors and external through wall air vents.
Damp proofing concrete floors above ground damp proofing for extensions.
We want to put electric under floor heating and engineered wood flooring down downstairs.
These days damp proof membranes are required in the construction of all new buildings to prevent rising damp.
Damp proof membranes dpms can be used to help resolve damp issues which already exist or to avoid damp or moisture problems in the future.