Damp Proofing Leeds
CSRT & CSSW qualified surveyors · PCA approved · TrustMark registered
Rising damp, penetrating damp, condensation and timber decay treated across Leeds, from the back-to-back terraces of Harehills and Armley to cellar conversions in Holbeck and student housing in Hyde Park. We diagnose the cause before we quote for the cure.
Why damp is so common in Leeds homes
Leeds has a housing stock unlike anywhere else in the country, and the reason so many properties here suffer with damp comes down to how those houses were built.
Back-to-back terraces
Leeds retains more back-to-back housing than any other city in the UK, concentrated in Harehills, Armley, Beeston and Holbeck. A back-to-back has only one external elevation and no through ventilation, which means moisture generated inside has nowhere to go, and the single exposed wall takes the full weight of the weather. Both problems compound each other through the winter.
Millstone grit, brick and solid walls
Most pre-1920s Leeds housing is solid walled with no cavity, built from local brick or millstone grit. Once pointing softens or a gutter overflows, water tracks through the wall rather than being stopped by it. On through terraces the original slate damp proof course has often cracked with settlement or been bridged by raised paths and patios.
Cellars, conversions and student housing
Two further issues come up on Leeds surveys constantly, and neither is solved by injecting a damp proof course.
Rooms below ground level
Cellars are standard in Leeds terraces, and the mill conversions around Holbeck, Kirkstall and the Round Foundry put habitable rooms below external ground level. Water under pressure finds any weakness, so these spaces need a waterproofing system designed to BS 8102, not a coat of damp-proof paint.
High-occupancy housing and black mould
The student and HMO stock around Hyde Park, Headingley, Burley and Woodhouse puts several people, showers and drying laundry into buildings that were airtight to begin with. Every winter that produces black mould on cold external walls, in corners and around window reveals. It is a ventilation problem, not a damp proofing one, and it is treated as such.
The three types of damp we treat in Leeds
They look similar on the wall and they are treated completely differently. Getting this wrong is the single most expensive mistake a property owner can make, which is why every job starts with a survey rather than a quote.
Moisture drawn up from the ground
Tide marks up to about a metre, salt bloom in the plaster, damp skirtings and lifting floor coverings. In Leeds it is usually a cracked slate DPC in a Victorian through terrace, or a DPC bridged by a raised path or yard. Treated with a chemical DPC and salt-resistant re-plastering.
Water coming through the structure
Appears at any height and worsens after heavy rain. Common causes here are eroded pointing on exposed back-to-back elevations, defective rainwater goods and blown render. Treated by fixing the defect first, then making good internally.
Moisture the building cannot shift
Black spotting in corners, on window reveals and behind furniture, worst between October and March. Endemic in back-to-backs and high-occupancy student housing, where there is little or no through ventilation. Resolved with improved ventilation alongside targeted mould treatment.
What happens when we survey your Leeds property
Every job begins with a damp survey carried out by a CSRT qualified surveyor. You get a written report and a clear recommendation, including the times we tell you no damp proofing work is needed.
Inspection
External ground levels, pointing, rainwater goods and DPC line, then a full internal inspection including the cellar.
Testing
Moisture meter readings, salt analysis where rising damp is suspected, and timber probing for rot and woodworm.
Report
A written report setting out the cause, the evidence behind the diagnosis and the recommended remedial work.
Quotation
An itemised, fixed-price quotation. No pressure, no obligation, and no work booked until you are ready.
Damp proofing treatments for Leeds properties
We are registered Safeguard and Sovereign users, and all remedial work is carried out to PCA standards using methods appropriate to the construction of the building.
- Chemical damp proof course injection for failed or missing DPCs in stone and brick walls
- Salt-retardant re-plastering, the essential second half of any rising damp treatment
- Cellar tanking and cavity drainage membranes for below-ground rooms and basement conversions
- External pointing and render repairs to stop penetrating damp at source
- Ventilation and PIV systems as part of our approach to condensation control
- Timber treatment for wet rot, dry rot and woodworm in joists and floor timbers
What our customers say
Verified reviews from homeowners, landlords and letting agents across Leeds and West Yorkshire.
Qualified surveyors covering Leeds
All Dry is based in Barnsley, a straight run up the M1, and we have been treating damp across Yorkshire for more than 25 years. That means a surveyor who understands how a back-to-back behaves differently from a through terrace, and a team you can still get hold of years after the work is finished.
- CSRT qualified surveyors
- CSSW qualified for structural waterproofing
- PCA approved contractor
- TrustMark registered
- Registered Safeguard and Sovereign users
- Guarantee Protection Insurance available
- Building Regulations compliant workmanship
- Reports accepted by lenders and surveyors
Workmanship is guaranteed on every job, and Guarantee Protection Insurance is available on all completed work.
Areas of Leeds we cover
We work across the whole of Leeds, including the town centre and all surrounding suburbs and villages.
- Headingley
- Hyde Park
- Burley
- Armley
- Bramley
- Kirkstall
- Horsforth
- Roundhay
- Chapel Allerton
- Meanwood
- Harehills
- Beeston
- Holbeck
- Morley
- Moortown
- Alwoodley
- Adel
- Farsley
- Pudsey
- Rothwell
- Garforth
- Wetherby
- Otley
- Guiseley
Covering LS1 to LS29. Just outside Leeds? We also cover Wakefield, Dewsbury, Huddersfield. See all areas we cover.
Damp proofing in Leeds, common questions
The questions Leeds homeowners, landlords and buyers ask us most often.
It depends on how much wall needs treating, whether re-plastering is required and how easy the property is to access. A single wall in a terraced house is a very different job from tanking a full cellar, so we do not quote before we have seen the property. After the survey you get an itemised, fixed-price quotation, and the figure you are quoted is the figure you pay.
Yes. A proper survey takes time and produces a written report you can use, including with a mortgage lender or your own builder. The fee is refunded in full against the cost of the work if you go ahead with us. We would rather charge for an honest diagnosis than offer a free inspection that only ever concludes you need work doing.
Often it is something else. In Leeds the most common misdiagnosis is condensation or a bridged damp proof course being treated as rising damp. Raised external ground levels, a leaking gutter or eroded pointing will all produce damp patches that look identical from the inside. That is why we test for salts and inspect the outside of the property before recommending any injection work.
They need a different approach rather than a harder one. A back-to-back has one external wall and no through ventilation, so condensation builds up far more readily and the single exposed elevation takes all the weather. Treating one without addressing ventilation usually means the problem returns, so we look at airflow as well as the fabric of the building.
Regularly. With one of the largest student and HMO markets in the country, we handle damp and mould reports for landlords who need to demonstrate compliance with the Homes (Fitness for Human Habitation) Act and Awaab's Law. We report directly to the agent and work around tenant access.
A chemical DPC and re-plaster to one or two walls is typically two to four days on site. Cellar waterproofing usually takes one to two weeks. New plaster then needs to dry before decorating, so allow around one month per 25mm of thickness. Most walls are ready to paint after four to six weeks using a breathable emulsion.
Yes. Our reports are produced by CSRT qualified surveyors and we are a PCA approved contractor, which is what lenders and homebuyer surveyors look for when a retention has been placed on a purchase. If you are buying in Leeds and your survey has flagged damp, tell us and we will prioritise the appointment.
All workmanship is guaranteed, and Guarantee Protection Insurance is available on completed work. That means the cover stands even if the company ceases trading, and the guarantee is transferable to a new owner if you sell the property.
Get your Leeds damp problem diagnosed properly
Book a survey with a CSRT qualified surveyor and get a written report, an honest diagnosis and a fixed-price quotation.
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