Independent damp surveys in Southwark
Southwark runs from riverside warehouse conversions at Bankside through Georgian and Victorian terraces in Walworth and Camberwell to some of the largest post-war estates in Europe. The borough is also one of the most active in London for housing disrepair, and a good share of our work here is producing the evidence those cases turn on.
Request a survey Fixed-price surveys from £215, report included
Southwark housing, and what it does when it gets wet
The warehouse and wharf conversions along the river are heavy masonry structures never designed to be heated and occupied. Very thick brick walls that were dry because they were ventilated and unheated now have insulation and plasterboard against them, and the moisture profile of the wall has changed completely. Where the conversion detailed that well it performs; where it did not, the result is interstitial condensation behind the lining, which is invisible until the timber battens fail.
The Victorian terraces in Peckham, Camberwell and Walworth are solid brick, largely converted to flats, and old enough that the first generation of conversion work is now failing. Flat roofs over rear extensions at the end of their life, boxed in stacks, and rear closet wings with shared valley gutters produce most of the water. It typically appears in a flat that owns none of the defect.
The large estates fail predictably at cold bridges and at joints in system built panels, and the mould follows the structure in bands and corners. Because Southwark has a high volume of disrepair claims, the distinction between a building defect and condensation from occupation is often the entire dispute, and it is what our reports are written to establish with measurements rather than opinion.
What we are usually called out to in Southwark
- Interstitial condensation behind insulated linings in warehouse and wharf conversions
- Failed flat roofs over rear extensions in converted Victorian houses
- Shared valley gutters between closet wings overflowing into both properties
- Mould banding at slabs, reveals and panel joints in post-war estate housing
- Housing disrepair reports that will stand up to the other side's scrutiny
- Timber decay behind linings where a wall has been wet for years without showing
Which kind of damp is it?
In a London building the same stain can have four or five different causes, and in Southwark we regularly find two at once. Water rising from the ground through a wall with no working course. Rain entering through a parapet, a gutter, a cracked render or a window head. Moisture from the air condensing on a cold wall. Water from a pipe, a bath seal or a flat upstairs. Each needs a different repair and, in a shared building, often a different person to pay for it.
Our readings are taken to separate them: at depth as well as at the surface, at heights up the wall, on either side of the damp, and alongside humidity and surface temperatures. The pattern, not a single number, is what the diagnosis rests on.
What an ATi survey in Southwark includes
- Moisture readings taken on a grid and at height bands, so the report can show which way the water is moving
- The outside of the building, including front areas, lightwells, parapets and rear additions where access allows
- Communal elements that affect your flat: shared gutters, soil stacks, roof outlets and the party walls
- Humidity, air and surface temperatures where mould or condensation is in question
- Extract fans checked for where they discharge and how much air they move
- Timbers within reach, and the sub floor where a hatch or a lifted board allows
What you receive
A written report with photographs within 24 hours, in plain English, that stands on its own whoever reads it.
- Findings by room and by elevation
- Readings and the pattern they form
- The diagnosis, and the causes considered and excluded
- Recommendations in priority order
- Notes for a purchase, a lease or a disrepair matter where relevant
- A clear line where a quote you hold for a Southwark property goes further than the defect
From request to report
- Send the request form or call. We reply the same day with the fee in writing.
- We agree a visit, including evenings and weekends, and arrange access to any communal areas if needed.
- The surveyor spends as long as the Southwark property needs.
- The written report follows within 24 hours.
Buyers, landlords, tenants and leaseholders in Southwark use our reports for different reasons, but always because the report has nothing behind it. We carry out no remedial work and take no referral fees, so our conclusion is not shaped by what it would lead to.
Leaseholders, landlords and buyers in Southwark
Buying in Southwark? A homebuyer or building survey that recommends a damp specialist should be followed by somebody with nothing to sell. Our report arrives within 24 hours of the visit, in time to negotiate, and it separates what is wrong from what simply needs maintaining. Landlords and tenants use the same report to settle what is a building defect and what is condensation; see our note on Awaab's Law and landlord duties.
By town
Bermondsey and Borough
Converted warehouses, Georgian and Victorian terraces and large estates near the river. Sealed warehouse walls, roof terraces and condensation recur.
Peckham and Camberwell
Victorian terraces and villas, many converted, and post war estates. Rear additions, conversions and mould are typical.
Dulwich
Victorian and Edwardian houses on larger plots and the Dulwich Estate, which has its own management scheme. Rainwater under mature trees and extension junctions dominate.
Where we cover
We survey across the borough, from Bankside and Bermondsey out through Camberwell and Peckham to Dulwich.
- Bermondsey
- Peckham
- Camberwell
- Walworth
- Dulwich
- Rotherhithe
- Elephant and Castle
- Nunhead
- Bankside
Postcode districts
- SE1
- SE5
- SE15
- SE16
- SE17
- SE21
- SE22
What customers say about us
Best servey i have had done fast easy and everything got sorted A+++
Lee, on Google
Professional friendly service. Highly recommended
Lisa Range, on Google
Southwark questions
What is interstitial condensation and why does it matter in a warehouse conversion?
It is condensation forming inside the build up of a wall rather than on its surface, where warm moist air reaches a cold layer behind the plasterboard. It matters because there is nothing to see: the room looks fine while the battens, insulation and any embedded timber behind the lining get progressively wetter. In converted warehouses, where a thick masonry wall that used to be cold and ventilated is now lined and heated, it is a common and under diagnosed failure. Finding it means understanding the build up, not just reading the surface.
Our landlord blames condensation. Does that end the argument?
No, because condensation is a symptom rather than a cause. Moisture condenses where a surface is below the dew point of the air, and a surface can be cold because of a cold bridge, a panel joint or missing insulation, all of which are defects. Ventilation that does not work is also a defect. Our report measures surface conditions, records where the mould actually is relative to the structure, and tests whether the ventilation performs, which is what distinguishes the two.
Our Bermondsey warehouse flat has damp walls. Why?
Thick brick walls sealed internally cannot dry, so rain getting in shows inside. The survey looks at the wall build up.
Do we need Dulwich Estate approval to fix damp?
Some external work needs approval under the estate's scheme of management. The report flags where that is likely.
Our Peckham flat is damp on the party wall. Is it ours?
Party wall damp in conversions often comes from next door. The report records it as evidence.
Will you try to sell me damp proofing in Southwark?
No. We carry out no remedial work, so there is nothing to sell after the survey. The report states the cause, the work that would actually fix it and an outline of what that work should reasonably cost, so you can get like for like quotes from contractors of your choice, or put it to a seller, landlord or freeholder.
Nearby
Book a damp survey in Southwark
We survey and report only, with no treatment to sell, so what the report says is the whole of our interest. Same day response to every enquiry, and a written report with photographs within 24 hours of the visit.
Book a survey or call 020 3355 4944