07576 573615tom@cbsdamp.co.uk Mon–Fri 8am–8pm · Sat 8am–1pm · Sun closed About Services Areas Our work Contact 07576 573615Request Free Survey HomeAreas coveredSlough Damp proofing in Slough # Damp proofingin Sloughwith a fixed price Slough's post-war estates, interwar semis and older terraces each fail in their own way. Free survey and diagnosis, a written fixed price, and ten-year guarantees on damp treatment. Request your free survey 07576 573615 Free survey in Slough and the surrounding Thames Valley · 10-year workmanship and QANW insurance-backed guarantees 10 years Company workmanship guarantee on damp treatment 10 years QANW insurance-backed guarantee £0 Survey, diagnosis and fixed-price quotation in Slough £2m Public liability insurance held Local coverage ## Covering Slough and the surrounding Thames Valley Slough sits at the western end of our coverage, reached easily along the M4 and A4 corridor from Harrow. We cover the town and the surrounding villages: Langley, Cippenham, Chalvey, Upton, Colnbrook, Datchet, Iver, Burnham and Farnham Royal, and surveys are free. The housing is a distinctive mix. Slough grew rapidly through the interwar and post-war decades on the back of the trading estate and industrial employment, so there is a large volume of 1930s semi-detached housing and a great deal of 1950s to 1970s estate development, plus older terraced and cottage property in the town centre and the surrounding villages, and a lot of recent flats. Being in the Thames Valley matters. The town sits on low, relatively flat ground close to the Thames and its tributaries, with a high water table in places and known flood-prone pockets towards Datchet, Colnbrook and the river side of the borough. Higher groundwater puts more water at the base of walls and into any below-ground space. There is also a large private rental market here, so we work regularly with landlords and agents who need a written diagnosis and a fixed price they can act on. ### Areas we cover within Slough - Slough town centre - Langley - Cippenham - Chalvey - Upton - Colnbrook - Datchet - Burnham - Farnham Royal - Iver - Stoke Poges - Windsor fringe ### Property types we work on 1930s semis, 1950s–1970s estate housing, older village and town-centre terraces, converted and modern flats, and small commercial units. ### Common Slough requests Damp at the base of walls on low-lying sites, bridged cavities, failed render, and condensation in rented flats. ### Landlords and agents welcome Written diagnosis plus a fixed-price quotation, with an honest answer where the real fix is ventilation or an external repair. ### When you can reach us - Monday8am – 8pm - Tuesday8am – 8pm - Wednesday8am – 8pm - Thursday8am – 8pm - Friday8am – 8pm - Saturday8am – 1pm - SundayClosed Services in Slough ## Every service available across Slough ### Rising damp treatment A failed damp proof course is diagnosed, treated with an accredited Sovereign or Wykamol system and replastered to a decoration-ready finish, priced as a fixed sum before any work starts, and guaranteed for ten years. Rising damp treatment in Slough ### Penetrating damp treatment Damp that worsens after rain is coming in from somewhere. We find the route: pointing, render, sills, gutters or roof detail; correct it, then repair the wall inside. Free survey, fixed price, no guesswork. Penetrating damp treatment in Slough ### Damp surveys & diagnosis Find out exactly what is causing the damp, what it takes to fix it, and what it costs, in writing, at a fixed price, with no charge for the visit and no obligation to proceed. Damp surveys & diagnosis in Slough ### Structural waterproofing & tanking Below-ground rooms need a waterproofing system, not a coat of damp-seal paint. Membrane and cementitious tanking specified to suit the structure, installed as an approved Sovereign and Wykamol contractor, with a free survey and a fixed price. Structural waterproofing & tanking in Slough ### Plastering The replaster is half of any damp repair. We remove contaminated plaster, apply the specified salt-retardant system and leave a flat, decoration-ready finish, as part of a fixed price, by the same contractor that treated the wall. Plastering in Slough ### Rendering Cracked, hollow or blown render holds water against your masonry. We identify why it failed, repair or renew it with a system suited to the substrate, and fix the damp it was causing inside. Rendering in Slough ### Brickworks & repointing Open joints and spalled brick faces are the most common route for penetrating damp. We cut out properly, repoint in a mortar matched to your brick, and replace masonry that has broken down. Brickworks & repointing in Slough ### Brick stitching Helical stainless bars bonded into the bed joints tie cracked brickwork back into one structure, a repair carried out from the outside, without rebuilding the wall, and finished so the crack disappears. Brick stitching in Slough ### General building Damp repairs rarely stop at the damp. We carry out the associated building work: masonry, render, plaster, joinery repairs and making good, so the job finishes with one contractor accountable for all of it. General building in Slough ### Small refurbishment & remedial works Treatment stops the damp; remedial work makes the room liveable again. Plaster, joinery, floors, decoration preparation and making good, completed by the contractor that did the specialist work, at a fixed price. Small refurbishment & remedial works in Slough Why choose us ## Why Slough homeowners use Charge Building Services ### We diagnose before we price Slough's low-lying ground and mixed housing ages produce several different damp mechanisms. The free survey identifies which one you have. ### Groundwater experience Below-ground and low-level water is a real factor here, and we specify accredited waterproofing systems designed for water under pressure. ### Two ten-year guarantees 10-year company workmanship guarantee plus a separate 10-year QANW insurance-backed guarantee on damp treatment. ### Approved Sovereign & Wykamol contractor Accredited systems installed to the manufacturer's specification on every treatment. ### Damp plus the repair Render, repointing, brick stitching, plastering and making good in-house, so the external cause is corrected as part of the same job. ### Fixed price, insured Written fixed-price quotation, 50% deposit and 50% on completion by bank transfer, £2,000,000 public liability insurance held. Local damp problems ## Why Slough properties suffer damp Slough's damp issues are shaped by its ground conditions and its building eras. Low, flat ground near the Thames means groundwater can sit relatively high, and where surface drainage is poor, water lingers against walls instead of draining away. The building stock adds the rest. Interwar cavities are easily bridged by debris and raised paving, post-war estate housing has thin walls and limited insulation that encourages condensation, and older village property has soft brick and lime mortar that has often been repointed or rendered in unsuitable hard cement. ### High groundwater and low-lying plots Properties on low ground near the Thames and its tributaries push more moisture at the base of walls and into cellars and garages. ### Poor surface drainage Flat plots with blocked gullies, undrained patios or paving above DPC level hold standing water against the wall. ### Bridged interwar cavities Mortar droppings and rubble at the cavity base in 1930s housing carry water across to the inner leaf. ### Condensation in post-war housing Thin construction, cold corners and limited ventilation in estate housing and flats produce black mould that is mistaken for rising damp. ### Failed render on estate housing Cracked or hollow render on post-war walls admits and holds water, creating large diffuse damp patches indoors. ### Hard cement on old village brick Unsuitable repointing and render on period property in the surrounding villages traps moisture and spalls the brick face. Our process ## The same five steps on every job in Slough 01 ### Free survey and diagnosis We inspect the property, identify the actual cause of the damp and explain it in plain terms. No charge, no obligation. 02 ### Fixed-price written quotation A clear fixed price for the specified works, built around your property, never a day rate. 03 ### Works carried out Accredited Sovereign and Wykamol systems installed, walls replastered and the area made good. 50% deposit, 50% on completion by bank transfer. 04 ### Verification and making good Treatment checked for continuity, plaster left flat and decoration-ready, and the area cleaned down. 05 ### Guarantees issued A 10-year company workmanship guarantee plus a 10-year QANW insurance-backed guarantee on damp treatment. In detail ## Damp proofing across Slough in detail ### Rising damp and ground moisture in Slough Genuine rising damp shows a tide mark at a reasonably even height, salt bloom on the wall face, hollow plaster and skirtings that are soft at the back. Where the survey confirms it, treatment is an injected chemical damp proof course using an accredited Sovereign or Wykamol system, plus removal of salt-contaminated plaster and salt-retardant replastering. On Slough's flatter, lower sites we pay particular attention to external levels and drainage before specifying anything. A patio or drive above the DPC, a blocked gully, or an undrained paved area can all produce identical symptoms, and correcting the drainage is both cheaper and more permanent than treating the wall. Where a chemical DPC is right, the replastering is not optional. Hygroscopic salts in old plaster keep absorbing moisture from the air, so the wall still reads damp even after the rise has stopped. ### Tanking, garages and below-ground rooms Where groundwater is high, any below-ground or half-buried space needs proper structural waterproofing rather than a coating. That means cementitious tanking bonded to sound masonry, or a cavity drain membrane system with perimeter drainage discharging to a gravity drain or to a sump and pump. Integral and converted garages are a common Slough job. They were typically built with no floor damp proof membrane, a slab lower than the house and an outer leaf designed to get wet, so converting one to a habitable room needs the floor and lower wall addressed together. We detail junctions, penetrations and floor-to-wall returns as part of the accredited system, and size any pump for the water the space actually takes. ### Condensation in rented Slough property A large share of the mould complaints we see in Slough flats and estate housing are condensation rather than structural damp: black spotted growth in corners, on reveals and behind furniture, worst in winter, concentrated in kitchens, bathrooms and bedrooms. The remedy is moisture control and ventilation: working extraction where moisture is produced, adequate background ventilation, and dealing with the coldest surfaces. We put that in writing even when it means less work for us, because an injected DPC will not fix it. ### Render, brickwork and stitching Where render or pointing has failed, water is delivered into the wall rather than shed off it. We cut out and repair or renew render, repoint in a mix appropriate to the masonry, replace spalled brick, and reinstate sill and drip details. Where movement has cracked masonry, common at bay junctions, over openings and on long unrestrained runs, helical brick stitching bonds the crack across the joints so it stops reopening and stops acting as a water path. ### Coverage around Slough Alongside Slough we cover Buckinghamshire and High Wycombe to the north, Middlesex and Harrow, West London and the wider London boroughs, Watford and Surrey. Calls are answered Monday to Friday 8am to 8pm and Saturday 8am to 1pm. If a sale or tenancy is waiting on the survey, tell us and we will be straight about the timescale. Questions ## Damp proofing in Slough, common questions Do you cover Slough and the surrounding villages?Yes: Slough town centre, Langley, Cippenham, Chalvey, Upton, Colnbrook, Datchet, Iver, Burnham, Farnham Royal and Stoke Poges. How quickly can you reach Slough?Slough is reached along the M4 and A4 from our Harrow base. We take calls Monday to Friday 8am to 8pm and Saturday 8am to 1pm and arrange surveys to suit your availability. What does damp proofing cost in Slough?It depends on the wall, the length treated, replastering and access. The survey, diagnosis and written fixed-price quotation are free. Do you offer urgent attendance in Slough?Active water ingress is prioritised for survey within our working hours of Monday to Friday 8am to 8pm and Saturday 8am to 1pm. My property is on low ground and the walls are damp at the base; what causes that?Often external levels and drainage rather than a failed DPC: paving above the damp proof course, undrained hard standing or a blocked gully. The survey identifies which, and correcting drainage is usually the cheaper fix. Can you waterproof a garage or below-ground room?Yes: accredited cementitious tanking or a cavity drain membrane system with drainage, plus a floor build-up where there is no damp proof membrane. Is the work guaranteed?Damp treatment carries a 10-year company workmanship guarantee plus a separate 10-year QANW insurance-backed guarantee. Building works carry a 6-month workmanship guarantee. Do you work for landlords and letting agents in Slough?Yes, regularly. You get a written diagnosis and a fixed-price quotation, including where the honest answer is ventilation rather than damp proofing. Are you insured?Public liability insurance is held to £2,000,000. Is the survey free?Yes, along with the written fixed-price quotation, with no obligation to proceed. Free survey ## Book a free damp survey in Slough Send the postcode and a description of the problem; how high the damp goes, whether it follows the rain, and which rooms are affected. We will survey and quote a fixed price. - Free survey, diagnosis and written fixed-price quotation in Slough - 10-year company workmanship guarantee on damp treatment - 10-year QANW insurance-backed guarantee - Sovereign & Wykamol approved contractor - £2,000,000 public liability insurance Call 07576 573615 Nearby areas ## We also cover ### Damp proofing in Buckinghamshire Chalk hillsides, old brick-and-flint cottages and rendered village housing make Buckinghamshire damp its own discipline. Free survey, honest diagnosis, fixed price, ten-year guarantees on treatment. View area ### Damp proofing in High Wycombe High Wycombe sits in a chalk valley with steeply sloping streets, and that geography drives much of the damp here. Free survey, honest diagnosis, fixed price, ten-year guarantees on treatment. View area ### Damp proofing in Middlesex We are based in Ealing, so Middlesex is home ground. Interwar semis, period terraces and modern extensions, free survey, honest diagnosis, fixed price and ten-year guarantees on damp treatment. View area All areas coveredAll servicesHomeContact Damp proofing, structural waterproofing and remedial building works across London and the surrounding counties. Tom Charge, Owner. ### Contact - 07576 573615 - tom@cbsdamp.co.uk - C/O MG Tax, 166 College Road, Harrow, England HA1 1BH ### Hours - Monday8am – 8pm - Tuesday8am – 8pm - Wednesday8am – 8pm - Thursday8am – 8pm - Friday8am – 8pm - Saturday8am – 1pm - SundayClosed ### Guarantees - 10-year company workmanship guarantee - 10-year QANW insurance-backed guarantee - 6-month guarantee on building work - Sovereign & Wykamol approved contractor - £2,000,000 public liability insuranceAboutServicesAreasOur workContact ### Damp proofing & building services - Rising damp treatment - Penetrating damp treatment - Damp surveys & diagnosis - Structural waterproofing & tanking - Plastering - Rendering - Brickworks & repointing - Brick stitching - General building - Small refurbishment & remedial works ### Areas we cover - Harrow - Pinner - Stanmore - Edgware - Ealing - Chiswick - Isleworth - Chelsea - Middlesex - Brent - London - West London - Watford - Slough - Buckinghamshire - High Wycombe - Surrey © 2026 Charge Building Services Ltd. 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