4.9/5 from 500+ South Wales customers

Sort Damp Properly - Before It Becomes a Bigger Problem

We identify the cause of damp and fix it properly - protecting your home and avoiding bigger issues down the line.

No Deposit Required10-Year GuaranteeFixed Price Promise
Property after damp proofing treatment - QES Exteriors
Property before damp proofing treatment - QES Exteriors
BeforeAfter

"Our house looks brand new. Worth every penny!" - Sarah M, Swansea

Damp doesn't fix itself - it just gets worse over time!

Left untreated, damp can lead to damage, higher repair costs, and an unhealthy living space. The sooner it's dealt with, the easier it is to fix.

3 Types of Damp We Treat

Not all damp is the same - and fixing it properly starts with understanding what you're dealing with.

Rising Damp

Warning Signs:

  • Tide marks on walls (up to 1m high)
  • Peeling paint/wallpaper at skirting level
  • Damp/musty smell
  • White salt deposits on walls

Our Solution:

Chemical DPC injection + replastering with waterproof render

Penetrating Damp

Warning Signs:

  • Damp patches after rain
  • Staining on walls/ceilings
  • Plaster crumbling
  • Mould growth

Our Solution:

External wall coatings + crack repairs + drainage improvements

Condensation

Warning Signs:

  • Streaming windows
  • Black mould in corners
  • Worse in winter
  • Damp smell in bedrooms/bathrooms

Our Solution:

Ventilation systems + thermal upgrades + humidity management

Our Damp-Proofing Process

Free Survey

Moisture meter readings, cause identification, detailed report

Treatment Plan

Fixed-price quote, timeline, no-obligation decision period

Installation

Certified technicians, minimal disruption, daily progress updates

Guarantee

10-year warranty, follow-up inspection, ongoing support

The Real Cost of Ignoring Damp

Living With Damp

  • Structural timber rot and escalating repairs
  • Full replastering and redecoration
  • Health issues: asthma, respiratory problems
  • Ruined furniture and belongings
  • Property value and saleability at risk
  • Mortgage and insurance complications
  • Unpleasant odours and appearance

After Treatment

  • Dry, healthy living environment
  • Protected structure and investment
  • Better air quality for your family
  • Fresh, clean interior decoration
  • Maintained or increased property value
  • Lower heating bills (drier = warmer)
  • Peace of mind with 10-year guarantee

Most damp issues are straightforward to fix once identified

We'll always give you a clear quote upfront

Our Cast-Iron Guarantee

10 Years

Full Warranty

£0

Deposit Required

100%

Success Rate

If damp returns within 10 years, we fix it completely free. That's how confident we are.

See the transformation

Drag the slider to compare before and after - then try it on your own property with our app.

Property after damp treatment - QES Exteriors
Property before damp treatment - QES Exteriors
BeforeAfter

Try it on your home

Download the app, upload a photo of the problem area - it helps us understand what you are dealing with before we visit.

Our app is on the way - we'll add App Store and Google Play links here as soon as they're live. Ask your QES contact in the meantime.

Get a Free Quote

Tell us about your property in 3 simple steps

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