Manchester Damp Proofing Experts

Do you have signs of damp in your Manchester home or business? RTC Group are the North West’s multi-award-winning damp proofing experts with over 35 years of experience helping property owners prevent and resolve moisture, rot, and mould issues. From period terraces in Chorlton to city-centre apartments and suburban homes, our PCA-certified team provides targeted, long-lasting treatments backed by robust, insurance-supported guarantees.

Award Winning Service
Fair & Transparent Pricing
35+ Years of Experience
Fully Insured

Schedule Your Free Survey Today

Don’t let damp issues damage your Manchester and Cheshire property. Contact RTC Group today to arrange a damp survey. Call us or fill out the online form provided to request a callback.

Damp Proofing Services for Manchester Homes & Buildings

Manchester’s historic architecture, industrial heritage, and ever-changing weather conditions mean that damp is a frequent issue across all property types. At RTC Group, we specialise in identifying the root causes of damp and applying targeted treatments that suit each building’s structure and location.

From converted mills in Ancoats to Edwardian semis in Sale and Hulme, we tailor our damp proofing solutions to each property’s age, materials, layout, and moisture exposure. Whether you’re facing condensation issues in a ground-floor flat or chronic rising damp in your period property, we offer a full spectrum of damp control services designed to deliver permanent results.

Our services range from advanced chemical DPC injections to full membrane installations and structural waterproofing for basements. Discover more about our Damp Proofing services.

Rising Damp Treatment

Rising damp is a common problem in Manchester’s older housing stock, especially properties built before damp proof courses were standard. Over time, brick and mortar act like a sponge, drawing groundwater up through the walls. The result? Peeling wallpaper, visible tide marks, musty smells, and deteriorating plaster—signs you shouldn’t ignore.

Chemical Damp Proof Course (DPC)

RTC Group uses cutting-edge DPC injection technology to form a barrier that prevents further moisture ingress from the ground. Our approach is minimally invasive but highly effective in stopping rising damp.

Salt-Resistant Replastering

After installing a chemical DPC, we remove contaminated plaster and apply breathable, salt-resistant plaster systems to ensure lasting protection and a smooth, redecorated finish.

Long-Term Protection

All rising damp work includes long-term, insurance-backed guarantees to give you total peace of mind. Learn more on our Rising Damp service page.

An interior wall that has signs of a rising damp problem

Penetrating Damp & Waterproofing Solutions

Penetrating damp is caused when water breaches your walls through cracks, defective render, porous bricks, or failing guttering. In Manchester’s climate—characterised by steady rainfall and frequent storms—penetrating damp is a growing concern for both older and modern buildings.

External Waterproofing

We apply breathable yet highly water-resistant coatings to external masonry, preventing further ingress while allowing moisture inside the wall to evaporate. Our External Waterproofing treatments preserve both structure and appearance.

Interior Tanking Systems

For below-ground spaces like cellars and basements, our tanking systems block lateral damp from the surrounding earth. See our Basement Waterproofing options to learn more.

Condensation & Mould Control

Manchester’s urban housing and frequent temperature fluctuations often cause condensation issues, which can lead to mould and damp odours in homes. These problems are most common in bathrooms, kitchens, and bedrooms, where moisture builds up with insufficient ventilation.

Positive Input Ventilation (PIV)

Our range of ventilation systems, including PIV units, improves airflow throughout your property. These systems lower internal humidity levels and eliminate the conditions mould needs to grow.

Anti-Mould Treatments

Once mould is removed, we apply specialist coatings that resist regrowth, ensuring your walls remain clean and safe. Visit our Mould Removal page for treatment details.

Condensation problem on a window pane

Woodworm Treatment

Untreated or poorly ventilated timber in lofts, floor voids, and older joists are especially vulnerable to woodworm infestations in Manchester homes. These beetles lay eggs that hatch into larvae, which burrow into the wood and compromise its structural strength.

Expert Woodworm Eradication

RTC Group’s Woodworm Treatments involve targeted chemical application to infected areas. We also inspect and, if needed, replace damaged timber to ensure long-term structural safety.

Dry Rot Treatment

Dry rot is a destructive and highly aggressive fungus that feeds on damp timber and spreads rapidly in areas with poor ventilation and high moisture levels. It thrives in concealed spaces like subfloors, wall voids, and roof structures—often going unnoticed until significant damage has already occurred. The fungus can weaken wooden beams, joists, and supports, and even pass through masonry to reach adjacent timber, making it one of the most serious threats to a property’s structural integrity. If not identified and treated promptly, dry rot can compromise floors, ceilings, and entire sections of your building, leading to extensive repair costs and ongoing safety concerns.

Dry Rot Remediation

Our Dry Rot service involves identifying the moisture source, removing decayed material, applying antifungal treatments, and restoring structural elements with treated replacements.

dry rot

Wet Rot Treatment

Wet rot occurs when wood remains damp for prolonged periods, often as a result of hidden plumbing leaks, rising damp, faulty gutters, or persistent condensation in poorly ventilated spaces. It typically affects timber that is in regular contact with moisture-prone areas—such as skirting boards, floor joists, or window frames—especially where airflow is restricted and damp conditions go unnoticed.

Unlike dry rot, wet rot tends to stay confined to the immediate area of moisture exposure, but it still leads to significant weakening and decay of the affected wood. The timber often becomes soft, spongy, and discoloured, losing its structural strength over time. If left untreated, wet rot can lead to costly repairs and further moisture-related problems in your property.

Comprehensive Wet Rot Repair

We investigate the root moisture problem, treat all affected wood, and replace sections beyond repair. Learn more on our Wet Rot page.

wet rot

Why Choose RTC Group in Manchester?

Homeowners, landlords, and commercial clients across Greater Manchester choose RTC Group for expert advice, friendly service, and trusted results. We pride ourselves on professional care, technical excellence, and thorough aftercare for every job we complete.

  • Over 35 years of local expertise across Manchester and the North West

  • PCA-certified technicians and TrustMark accredited work

  • Insurance-backed guarantees for all damp, timber, and rot treatments

  • Tailored solutions for all property types, including historic and commercial buildings

  • Clean, efficient and respectful work practices with minimal disruption

Fully insured, for greater peace of mind

Rest easy knowing we’re fully insured, so you—and your property—are protected every step of the way.

Manchester and Cheshire Damp Proofing - FAQs

Frequently Asked Questions

Do you have questions about our damp proofing services in Manchester and Cheshire? Check out our FAQs to find out about some answers to general questions.

Manchester properties often show signs such as tide marks on walls, peeling paint, musty smells, or visible black mould. These symptoms can indicate rising damp, condensation, or penetrating damp—all of which require different treatments. If you notice any of these, it’s best to book a free survey with RTC Group for a professional diagnosis.

Manchester’s frequent rainfall, cool climate, and high humidity levels create ideal conditions for damp to develop, especially in older buildings with poor ventilation or compromised masonry. These factors make professional damp proofing essential to preserve property condition.

Yes, we work with heritage and listed buildings across Greater Manchester. Our technicians use specialist, breathable systems that protect the building while respecting original materials and structure. We tailor each treatment to meet conservation guidelines.

Yes, prolonged exposure to mould caused by condensation or damp can worsen asthma, allergies, and other respiratory conditions. Our mould removal services eliminate health risks by treating both the visible mould and the underlying causes.

Absolutely. A professional damp and timber survey ensures that we accurately identify the issue and provide the right solution. RTC Group surveys across Greater Manchester.

Typical rising damp treatment can be completed within 2 to 4 days, depending on the size of the area and level of damage. This includes chemical DPC injection, plaster removal, salt treatment, and re-plastering.

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4.9/5 Rating from 230 Reviews

Why Choose RTC?

1

Experienced & Reliable

100+ properties attended every year

2

Established 35 Years

We have been in business since 1990

3

Skilled Experts

Expert Technicians and Surveyors

4

Long Term Guarantees

Our damp proofing is guaranteed to last

What Our Customers Say

Verified
Dillon’s Expertise Shines: Reliable, Neat, On-Time

The 2 men that turned up were very polite and the main man Dillon was good at his job got straight on with doing his work everything went as planned and when he had finished was left clean and tidy carpet replaced with new carpet grippers really happy with the work done

Verified
Protected Home, Perfect Finish—Excellent Result

Originally recommended by my surveyor after discovering damp in 5 rooms. All the RTC staff were friendly and did a great job in minimising the dust and mess with protected sheeting and flooring throughout the house. The final result is excellent and a big call out to Steve for helping with moving a very heavy radiator and giving me tips on cauking. Highly recommend if you want a fairly priced job by hghly skilled employees and not subcontractors.

Verified
Professional from Damp Report to Final Plaster

Delighted with the service. RTC installed a damp proof course and replastering at my house. The damp survey was professional, detailed and very clear on the work to be done with good accompanying explanations of the issues. The office is easy to contact, answering all my calls and returning them promptly if the person I needed to speak to wasn’t immediately available. The technicians who performed the work were professional and worked fast and hard. They explained clearly all the steps and left the house clean every day. I am really please with the final finish and overall result. They were not the cheapest quote or survey I had, but at all steps were the most professional. Highly recommended.

Verified
Clear Communication & Impeccable Cleanup

From start to finish the company were very professional. Everything was explained to us. Despite the work being very messy, everything was cleaned up at the end of each day. The two lads who completed the work, Wes and George, were hard working, polite and answered my many questions without any problem. The work was done to a very high standard, and it exceeded my expectations. I would highly recommend RTC, I would not hesitate to use them again.

Verified
Condensation Cleared in Days with PIV System

I recently had a Positive Input Ventilation System fitted in my loft and was very happy with the results. Within just a couple of days the problem with condensation was clearing. Lawrence who fitted the system did a great job and was very clean and tidy also the ladies in the admin department were very pleasant and helpful.

Verified
High-Standard Finish That Went Above & Beyond

Fantastic job done, really appreciate the work done. They did more than I expected at a really high standard. Nothing negative I could possibly say so I would recommend to anyone requiring their services. Good job RTC!

Verified
Transparent Pricing & Top-Notch Workmanship

From initial contact with the office, to the visit from the surveyor, the surveyors report which was very thorough as he actually went under the floors, the price for the work and the quality of the job itself was excellent. The surveyor Sam did an excellent job as was the repairs done by Dan and Karl. After the work was completed, I was contacted by the office to check that I was satisfied with work and the quality of the job, which I was. Professional all the way through with good customer service, made to feel I was important to their business. It’s an old adage but big enough to cope and small enough to care fits the bill. Would use again and would have no reservation about recommending them.

Verified
Damp Proofing Done Right—Clean, Quick & Reliable

Had RTC in to do damp proof work in dining room and hall way turned up on time everyday kept my property as clean as they could even thought this is a messy job before leaving everyday they made sure all work areas we’re hovered and swept the staff I had at my property were really nice friendly hard working lads they answered all my questions if I ever need them in the future they will be getting a call and can I finish by giving Jack a shout as he was with us though out the works and he is a credit to RTC

Verified
Outstanding Service by Sam, Stacey, Hayleigh & Mat

I had this company recommended to me and i am so glad they did everyone that ive dealt with from survey sam the girls in the office stacey and hayleigh to the workmen mat and the rest of workforce they did a great job and would use them again reliable tidy really pleased. Thanks again

Verified
Respectful Service & Impeccable Protection

I dont write reviews unless there necessary and these guys are, Dale fron RTC was absolutely brilliant very respectful in our home and with our furniture ensuring things were covered up the best he could amazing company.

Verified
Knowledgeable Pros Who Tidy Up After Themselves

From beginning to end the work was undertaken in a proffesional and efficient manner by skillful and knowledgable people. The workmen arrived when stated and left each day having tidied up and cleaned whereever possible.were. I have no hesitation in recommending RTC.

Verified
Respectful Team Treated Our Home Like Their Own

From initial contact, surveyor visit and 3 days on site undertaking the work we found RTC to be very professional in all aspects. The lads who undertook the work communicated well throughout the job and more importantly treated the property with respect, as if it was their own home. Would recommend RTC without hesitation or reservation.

RTC team

Request Your Survey Today

RTC are multi-award winners in the building preservation industry and the North-West’s leading property care specialists. Our range of services include the control of dampness, above and below ground waterproofing, dry rot, wet rot and woodworm treatment, condensation control, concrete and structural repairs and flood remediation.