While basements and cellars suffer water penetration more visibly than sub-floor voids, this does not mean to say that below ground (sub-floor voids) are any less prone to water penetration and flooding.
Walls which reside in standing water are more prone to rising dampness, a process by which the surface tension of water wicks water up through the pores in the building materials (mortar beds typically). In the event that a functional DPC (Damp Proof Course) is included within the walls at a suitable position, this rising damp should be of no real consequence, so what else is there?
Well, standing water results in air-borne water vapour. If the floor construction over the sub-floor void is suspended timber, (i.e. timber joists & floorboards), then this may suffer as a result. More specifically, timber is hygroscopic, in that it will absorb moisture from the air, so high humidity results in high moisture content within the timber, this (if high enough) encouraging decay and loss of structural strength in the long term. While we do not wish to overly alarm those with such issues, but it is something to be aware of and to address in the event that timbers register excessively high moisture content.
Furthermore, high humidity occurring within the void can transfer to living areas above where suction occurs as a result of warm air rising within the property above. If you consider that modern properties are often relatively well sealed, with the partial exception of open windows and ventilated sub-floors, rising air escaping through windows at high level within the property can draw air from within the sub-floor to the levels above, this resulting in dampness within floor finishes and a damp environment generally.
As a solution, Trace can install systems to address standing water within a sub-floor void, then isolating the living space over so that formation of a warm dry environment is facilitated.
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Finalfix Ltd Builders in Cheshire
“I couldn't recommend Trace Remedial enough. I was extremely impressed with all of the advise received and delighted with their speedy and professional service. I have even sought some advise months after my initial business with Trace Remedial and they were more than happy to help again. Fantastic!”
Lolos V R
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Newton Waterproofing Systems
"I can highly recommend Trace. I rang to get a damp survey booked in on a property we were looking to buy. Lewis was very helpful over a couple of phone calls, even ringing back on a day off! Offered advice and help even though we didn't end up going through with the survey. Great service, will use again."
“Just had Trace in to deal with a fairly significant damp problem in our house. The work was completed to a very high standard in the timescale agreed before commencement. Really good communication throughout and the tradesmen were really professional. Left the house as tidy as possible every day and I’m made up with the outcome. I wouldn’t hesitate to recommend to family and friends.”