Signs of Damp

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Signs of Damp

Damp is one of the most unpleasant problems that can happen to a property. Regardless of whether you are a homeowner or the owner of a commercial premises, it can make your property feel unwelcoming and unhealthy. These problems can also lead to rot and structural problems that present real danger.

In this guide we will show you the signs of damp, the simple steps you can take to prevent it and let you know when to call a professional.

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What Kind of Damp is Affecting My Home?

Excess moisture in your property will usually occur as a result of three main problems: rising damp, penetrating damp and condensation. Without the right amount of experience and training it can be difficult to differentiate the signs of each problem. It is vitally important to recognise the difference though as each requires different treatments to resolve.

Signs of Rising Damp

  • A tide line of yellowish or brownish staining or brown plaster in the lower area of your wall. This will be above your skirting board.
  • Rising damp symptoms may also be visible on skirting boards, where nails or screws show signs of rust
  • Skirting boards or plaster within the property may be damaged or rotting.
  • Moisture can often lead to paint and wallpaper peeling off.
  • You may notice floor coverings lifting.
  • A white powder-like substance can be left when soluble salts dissolve from the ground.
rising damp example wall staining on internal wall

If you have noticed any of the following signs on the ground level of your property, it is likely that you have rising damp resulting from capillary action. The most common cause of this is a damaged or bridged damp proof course (DPC). If you believe your property could be suffering from rising damp, read our in-depth advice for more information about treating rising damp effectively.

Signs of Penetrating Damp

  • Damaged wallpaper and plaster higher up the wall
  • Localised damp patches at various heights on the wall and ceiling
  • Damage to the external wall, pebbledash or render and guttering, allowing rain penetration into the property
penetrating damp example on top wall

For more information about penetrating damp including how to treat penetrating damp and associated moisture ingress problems such as wood rot or damp insulation in the cavity wall, visit our dedicated service pages.  

Signs of Condensation

  • Excess moisture appearing on any cold surface like windows, tiles and cold walls
  • Increased humidity levels
  • Mould growth around window frames or walls
  • A lingering musty smell
Condensation water vapour on window pane

If your home is developing a problem with condensation or black mould, please take the time to read our guide on the causes of condensation and our help and advice guide to black mould treatment.

Damp on Outside Walls

On external walls, you are likely to notice damp patches on brickwork and vegetation growing. When penetrating damp is the problem you will notice localised external staining around the source of the moisture ingress, usually a broken gutter or a damaged downpipe. In the case of rising damp, you might notice a tide mark on the lower external wall at a similar height to any marks on the inside of the property.

How To Get Rid of Damp

When it comes to getting rid of damp, you have two options: DIY or hire a professional.

The DIY option requires the correct use of DIY products as well as some home improvement and lifestyle changes.

The professional option requires you to find your local specialist to get rid of the problem for you.

DIY Damp Treatment Options

Although many damp issues require advice from an expert surveyor, some can be prevented or even fixed by simple home maintenance.

Repairing gutters and downpipes that are leaking or clogged can prevent water from penetrating the brickwork.

To get rid of condensation your home needs to improve its ventilation and this can be as simple as opening windows and cleaning out airbricks.

Once the issue is rectified, the removal of any mould built up within the property can begin; we suggest using a rag and soapy water and following this up with the application of anti-mould spray. Be sure to protect yourself from mould spores by wearing goggles, rubber gloves and a mask that overs both your mouth and nose.

Even though a DIY solution is the cheaper alternative to professional treatment, it does carry the risk of something being missed and the obvious disadvantage of having no guarantee.

Benefits of a Professional Damp Proofing Service

Though DIY solutions can be effective, not all damp problems are easily resolved. This is when you need expert help. A professional surveyor will be able to advise the best approach to resolving your damp problems and give you an accurate estimate of any costs involved.

Also, when professional grade materials such as chemical DPC, water-repellent damp proofing cream and damp-proof membrane are being used, the years of experience a trained technician can provide in their application is invaluable.

The key benefit of professional treatment is, of course, the guarantee. From residential properties to  commercial premises or even historic old buildings, our long-term guarantees will cover any work we do, giving customers complete peace of mind.

How To Choose your Damp Treatment Professional

A good property care company should be able to answer any questions you have about your damp problems. Any services and treatments offered should be tailored to suit your needs as much as possible and crucially a property professional should also respect your home, property or business.
 
Key criteria you should consider for selection:

Qualifications – a surveyor carrying CSRT and CSSW qualifications ensures that your damp survey and subsequent treatments are being carried out to the highest industry standards.

Affiliated associations – membership of recognized industry associations such as the Property Care Association (PCA) will ensure your the company you choose has to comply with strict membership criteria.

Online reviews – reading both the good and bad reviews online can give you a real insight into how a company performs and how they handle any complications.

Why Use Rentokil Property Care?

With Rentokil Property Care, you can be assured of complete property protection. Our approach to damp proofing will help your home or business remain dry and welcoming long-term.

With over 60 years experience delivering professional solutions for our customers, you can be sure of the quality of our service.

To get expert help and advice on your problem, give us a call. Our local property care team are on hand to answer any queries or concerns you have. To get in touch, contact your local branch on 0800 0121 437 or you can contact us online.

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