Damp Proofing Belfast

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Protect Your Home with Professional Damp Proofing Solutions

Damp can cause lasting damage to your property if not treated properly — from peeling paint and mould growth to structural decay. At North Building Contractors, we provide expert damp proofing services across Belfast and surrounding areas, helping homeowners safeguard their homes from moisture, improve air quality, and maintain property value.

Types of Damp Proofing We Offer

Rising Damp Treatment – installation or repair of damp proof courses (DPC) to prevent ground moisture rising through walls.
Penetrating Damp Solutions – external wall sealing, gutter repairs, and pointing to stop water ingress.
Condensation Control – ventilation improvements, extractor fans, and insulation to reduce moisture build-up.
Basement & Cellar Tanking – full waterproofing systems for below-ground rooms.
Damp Surveys & Diagnostics – professional inspection to identify the root cause before treatment.

Our Damp Proofing Process

Inspection & Diagnosis – We carry out a full damp survey, using moisture meters and visual checks to pinpoint the cause.
Tailored Recommendations – We provide a clear, written report with options for treatment and prevention.
Preparation & Repairs – Any necessary wall stripping, plaster removal, or external work is carried out before damp proofing begins.
Application of Damp Proofing Systems – Whether it’s DPC injection, tanking, or membrane installation, we apply proven systems to protect your home.
Replastering & Finishing – Once treated, walls are re-rendered, plastered, and finished to restore your home to a clean, dry condition.

Frequently Asked Questions

Q: How do I know if I have rising damp?
A: Common signs include tide marks on walls, peeling paint, musty smells, and crumbling plaster at skirting board level.

Q: Do you offer damp surveys?
A: Yes — we provide detailed inspections with a full report and recommendations.

Q: How long does damp proofing take?
A: Smaller jobs can take 2–3 days, while full-house treatments may take 1–2 weeks depending on scale.

Q: Is damp proofing messy?
A: Some stripping and replastering may be required, but we always protect your home and clean up thoroughly afterwards.

Q: Will damp proofing add value to my home?
A: Yes — a properly treated property is more attractive to buyers and avoids costly long-term repairs.

What Our Clients Say

“We noticed damp patches in our living room and were worried it would spread. North Building Contractors carried out a thorough survey, explained the options clearly, and fixed the problem quickly. The walls look brand new and the house feels much healthier.” – Michelle, Belfast

Get Started Today

If you’ve noticed damp patches, mould, or condensation in your home, don’t ignore the signs. Contact North Building Contractors today for a free damp survey and expert advice on the right treatment for your property.

👉 Looking for wider improvements? Explore our Full Renovations

      EXCELLENT  
   Based on 13 reviews 
    
 
 
 
   
 
 
       Posted on Google  
   
   Louise Murphy 
 
 
 
 Trustindex verifies that the original source of the review is Google. Very dependable team! Very happy with end result - I wanted a quick turnaround. Leo and the team were able to accommodate this. Work included repairs to damaged joists, mew suspended floor, damp proof course, replasterd walls, new kitchen and floor installation. Some delays were experienced but this was to be expected on sucha job. Communication was great and my questions/feedback were received well. Would definitely use again in future!!!
  
 
      Posted on Google  
   
   sandra Trimble 
 
 
 
 Trustindex verifies that the original source of the review is Google. I am absolutely delighted with my new en suite.   The workmanship was excellent, and communication was very good throughout.
  
 
      Posted on Google  
   
   Debbie Spence 
 
 
 
 Trustindex verifies that the original source of the review is Google. A huge thank you to Leo and his team for transforming our dilapidated 1970’s bathroom into something truly spectacular!! The team were highly professional, maintaining excellent standards and kept us informed throughout the entire process. We couldn’t be happier with the result!
  
 
      Posted on Google  
   
   Alessandro Corda 
 
 
 
 Trustindex verifies that the original source of the review is Google. Fantastic work after the storm on my roof. Exceptionally responsive and nice. Will definitely hire them again for other works.
  
 
      Posted on Google  
   
   Julie McConnell 
 
 
 
 Trustindex verifies that the original source of the review is Google. We are very pleased with the work completed by Leo and his team in building our wall. Professional level of service, good attention to detail and great communication throughout.
  
 
      Posted on Google  
   
   Zoe Dilworth 
 
 
 
 Trustindex verifies that the original source of the review is Google. I asked Leo to do a lot of work that needed done for my new house. He pointed out a lot of major issues that I had missed which I was so thankful for as this is my first house so I didn't really know what to look for. His communication is fantastic! Anything I needed or any questions I had he would get back to me with no issues. Him and his team were brilliant and very friendly. They paid attention to detail and they always tidied up after them. If i had any questions they would explain it to me in depth so i understood. They know their stuff and I would highly recommend them. Communication is a big thing for me and Leo was absolutely amazing. Leo and his team are very skilled at what they do and I am so happy with the results. I now feel safe in my first new home. Thank you!
  
 
      Posted on Google  
   
   Noel O Boyle 
 
 
 
 Trustindex verifies that the original source of the review is Google. Were really pleased with North. We needed work done to weather proof our new home.  Every aspect was covered including chimney and ridge tiles and it looks much better now as well.
  
 
      Posted on Google  
   
   Caitlin Millen 
 
 
 
 Trustindex verifies that the original source of the review is Google. I couldn't recommend North Building Contractors enough as they have gone above and beyond to make sure I have received my dream door for my house as soothly and easily as possible for me.
They have made the process a lot less stressful as they do everything themselves and go out of their way for the clients.
I will definitely be using them again in future to do additional jobs as I can not get over how amazing they handle everything which benefits people and families who have very busy lives and want the stress free experience with professional service and with an exquisite outcome.
Thank you Leo and your team for all your hard work.
You definitely get what you pay for.
  
 
      Posted on Google  
   
   Christine Gray 
 
 
 
 Trustindex verifies that the original source of the review is Google. Leo and the team were great workers. I'm pleased with the work they done for me. 👍
  
 
      Posted on Google  
   
   Brian 
 
 
 
 Trustindex verifies that the original source of the review is Google. First class service from start to finish regarding Repointing work on sidewall,great communication and job completed within the week,
Great local company reasonably priced.

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