Penetrating Damp Treatment

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Home » Penetrating Damp

The outside of your property is designed and constructed to stop damp getting in and affecting your home. Penetrating damp can get in through the roof, the walls, the pointing, even sub ground areas, so if you notice any dampness, strange watermarks, suspicious growths of mould or unusual smells, you might be looking at a penetrating damp problem.

There are several ways to solve these damp problems by repairing the cause of the damp and applying the most appropriate waterproofing system to protect your property. Contact your local branch for free advice or a property survey.

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What Causes Penetrating Damp?

Water will always follow the path of least resistance, and unfortunately what this means is that penetrating damp problems are caused primarily by defects with the exterior of the building itself. This could be anything from defective porous masonry or render, damage to the roof or rainwater goods to poor door and window pointing.

Cavity walls can also be affected by penetrating damp.  When the cavity has been filled with insulation and the external leaf starts to deteriorate the damp can soak the cavity insulation and affect the interior of the property.

In most cases wear and tear, cracks and fabric defects are the culprits to blame. For example, if the penetrating damp patch is found at guttering height, start by checking your downpipes and gutters for potential leaks. Accurate diagnosis is important before the correct repair specification can be decided as wrong diagnosis and repair specification will not solve the damp problem… and cost more by having to do the work twice. Visit our Penetrating Damp FAQ page to see all penetrating damp signs.

Solving Penetrating Damp Problems

The first thing which we’ll do is carry out a property survey. Once we’ve established the nature of the problem, we can treat penetrating damp with traditional building techniques and using our damp proofing systems– repairing the damage which allows the damp in and then applying a physical membrane or chemical water repellent.

Whether your home is brand new or has been build for years it can be affected by penetrating damp. Bear in mind that self-treatment may not be successful as it is easy to misdiagnose the form of damp affecting your property. Therefore, it is highly recommended to call out our qualified surveyor who will visit your property, identify the damp source and evaluate the scale of repairs needed. Contact your local branch for free advice or a property survey.

Penetrating Damp Treatment – Case Study

Damaged rainwater goods and porous render have lead to a penetrating damp problem. Once rainwater goods were repaired, our property specialists covered all external walls with a waterproofing membrane and by doing this prevented further water penetration to the living area during the natural drying out period. The whole area was then plastered and left ready for decoration.

Property Survey

*No Charge if you Own and Live in the surveyed property located within 25 miles distance from the nearest branch (alternatively a charge may apply). Speak with your local branch who will be happy to help deal with your property problem.

Our qualified damp surveyor will closely investigate the affected area and measure the scale of the problem. At Richardson and Starling, we only supply experienced surveyors who are highly trained in all types of damp and rot problems that could affect your property. This means that our surveyor will be able to complete the survey and give the appropriate remedial recommendations no matter what problem is identified.

5 Year Guarantee


Free automatic transfer to the new property owner if sold.

After eight decades of successful property surveys and repairs, we’re confident to offer you a 5 Year Guarantee that transfers with the Property.

Richardson & Starling are long standing members of the Property Care Association (PCA).

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