If you have noticed signs of damp in your property, a professional damp survey is the essential first step toward understanding the problem and finding the right solution. Many homeowners are unsure what to expect from a survey, so we have put together this guide to walk you through the entire process from booking to receiving your report.
A damp survey typically begins with a visual inspection of both the interior and exterior of your property. The surveyor will look for common indicators of moisture problems, including staining on walls and ceilings, peeling decorations, mould growth, damaged plaster, and defects in the external fabric of the building such as cracked render, missing pointing, or blocked gutters. This initial inspection helps the surveyor form a picture of where moisture might be entering and what type of damp is likely to be present.
The surveyor will then use specialist equipment to take moisture readings from your walls and floors. A calibrated electrical moisture meter is the primary tool used, and readings are taken at multiple heights and locations to build a moisture profile of the affected areas. In some cases, the surveyor may also use a carbide meter, which involves taking a small sample of plaster or masonry and testing it in a sealed chamber to get a precise measurement of moisture content. This is considered the most accurate method for confirming rising damp.
For more complex cases, the surveyor may use additional diagnostic tools. A thermal imaging camera can reveal hidden damp behind surfaces by detecting temperature differences caused by moisture evaporation. Salt analysis tests can help distinguish between rising damp and other forms of moisture ingress, as rising damp typically carries hygroscopic salts from the ground. Borescope cameras may be used to inspect cavity walls or areas that are not easily accessible.
Once the inspection is complete, you will receive a detailed written report. This report will outline the type and extent of damp found in your property, the likely cause, and recommended remedial works. A good report should include annotated photographs, moisture readings mapped to specific locations, and a clear explanation of the proposed treatment method. It should also include a quotation for the recommended work, allowing you to make an informed decision.
It is worth noting that a reputable damp proofing company will offer a competitively priced survey with no obligation to proceed with treatment. Be cautious of any company that pressures you into signing up for work on the spot. A genuine professional will give you time to consider the report and will be happy to answer any follow-up questions. At Brighton Damp Proofers, our survey fees are often credited against the cost of any remedial works, and we pride ourselves on providing honest, transparent advice regardless of whether you choose to instruct us for the remedial work.