Damp Proofingfor Landlords & Rental Properties
Rising and penetrating damp treatment and prevention
Quick answer
Damp proofing is the treatment of rising damp or penetrating damp in a building to prevent moisture from entering the fabric of the property. It includes chemical injection damp-proof courses for rising damp, external renders and water-repellent coatings for penetrating damp, and remedial pointing for deteriorated mortar joints.
Why Do Landlords Need Damp Proofing?
Direct answer
Rising damp and penetrating damp cause structural damage over time — staining, plaster failure, timber rot, and eventually damage to floors and structural elements. For landlords, damp proofing is a f…
Rising damp and penetrating damp cause structural damage over time — staining, plaster failure, timber rot, and eventually damage to floors and structural elements. For landlords, damp proofing is a fabric investment that protects the property value while ensuring the property remains habitable. Untreated damp is an HHSRS hazard and a potential Awaab's Law trigger.
What Should You Expect?
Damp proofing works depend on the diagnosis. Rising damp treatment typically involves injection of a chemical damp-proof course, replastering with salt-resistant render, and skirting board replacement. Penetrating damp treatment may involve re-pointing, external waterproof coatings, repair of failed lead flashings, or gutter and downpipe repairs. Always ensure the cause is correctly diagnosed before any treatment begins.
Find a Damp Proofing Specialist Near You
All 9 listed specialists below are manually verified. Promoted listings appear first.
Quoins Damp Surveyors
Bishop's Stortford, london · CM23 3JG
AntiDamp
Wigan, greater-manchester · Wn6 0ay
AntiDamp are Damp & Mould correction specialists based in Wigan, covering the north west. We specialise in fixing damp and mould issues at source, we fix the issue as opposed to just treating it. Our goal is to make sure you never see us on the same job twice. We already work with a number of estate agents across Wigan and the north west, as well as social housing companies and councils. This means our work is regularly scrutinised by local authorities.
The Hive Efficiency Group Damp Proofing Ld
Solihull, B90 9NP, yorkshire · B904ND
KC Home Solutions ltd
Crawley Down, Crawley, london · RH10 4AL
Established in 2023, our family-run property maintenance business brings over 20 years of industry experience to every job. We provide comprehensive property maintenance across London, Surrey, Kent, and Sussex. Fully insured with SafeContractor accreditation, we specialise in expert damp and mould treatments. Our four-step mould treatment process is highly effective because it targets mould at the source. We use biocidal products, which are specially formulated to kill mould spores completely and prevent regrowth, far more effective than home remedies like apple cider vinegar or shop bought products containing bleach, which may clean the surface but cannot penetrate deeply or stop mould from returning. We do more than treat visible mould. Our team is trained to identify and address the underlying cause, helping to prevent the issue from returning. As part of this process, we assess the property both internally and externally to determine whether remedial work is required. This may include: Improving ventilation systems Addressing penetrating damp Resolving DPC issues
Mothline presentation ltd
Southampton , south-west · So16 4px
Southampton's Most Trusted Damp & Preservation Specialists No guesswork. No upselling. Just honest, survey-led damp solutions backed by a 10-year guarantee.
Sovereign Preservation
Plymouth, south-west · PL3 5PS
We are a family run business covering Devon And Cornwall. Specialising. Damp treatment , plastering internal and external, woodworm treatment , Dry rot specialists, did you get your poop condensation control. All work covered by a 10 year Guarantee.
L Cox Plastering & Damp Solutions
Northfleet , kent · DA11 8SL
Anticc roofing and building Ltd
Chatham , kent · Me4 5eu
We are members of the Federation of master builders members of TrustATrader members of Checkatrade Google guaranteed members of the Confederation Roofing Contractors we operate all over the Kent area and we are Medway based we offer a wide range of Damp Proofing Products DPC dam courses mould control and many other things
Hepple Property Care Ltd
Houghton le Spring, north-east · DH4 5RJ
We are a multi-award-winning PCA-accredited contractor and have been established since 2008, serving landlords and homeowners across the North East of England. We are specialists in all damp, mould and timber infestation and have treated tens of thousands of properties in that time successfully. Our surveyors are CSRT qualified, and we have all qualified work staff.
Frequently Asked Questions About Damp Proofing
- How do I know if my property has rising damp or penetrating damp?
- Rising damp typically presents as a 'tide mark' on lower walls, often with salt staining and plaster blow. It rarely rises above 1.2m from floor level. Penetrating damp appears as wet patches on walls or ceilings, often associated with rainfall, and can appear at any height. Condensation mould, often confused with damp, appears on cold surfaces and worsens in winter. An independent damp survey will distinguish between these causes.
- Is damp proofing a permanent fix?
- Chemical injection damp-proof courses are designed to last the life of the building, but their effectiveness depends on the quality of installation and subsequent replastering. External waterproof treatments and coatings may need reapplication after 10–15 years. Pointing repairs are durable if done with appropriate mortars.
- What guarantees should I get from a damp proofing contractor?
- Reputable damp proofing contractors provide guarantees of 20–30 years on chemical damp-proof course installation. PCA member companies back these guarantees with deposit protection insurance, so the guarantee remains valid even if the company ceases trading. Always ensure guarantees are in writing.