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 coveredWatford Damp proofing in Watford # Damp proofingin Watforddiagnosed properly From Victorian cottages near the town centre to interwar and post-war estates on the edges, Watford damp has recognisable causes. Free survey, written fixed price, ten-year guarantees on treatment. Request your free survey 07576 573615 Free survey in Watford and surrounding Hertfordshire · Sovereign & Wykamol approved · 10-year QANW insurance-backed guarantee 10 years Company workmanship guarantee on damp treatment 10 years QANW insurance-backed guarantee £0 Survey, diagnosis and fixed-price quotation in Watford £2m Public liability insurance held Local coverage ## Serving Watford and the surrounding Hertfordshire towns Watford is a straightforward run from our Harrow base, and it is one of the towns we cover regularly along with Bushey, Croxley Green, Rickmansworth, Abbots Langley and Garston. Surveys are free and can be arranged in the evening up to 8pm on weekdays or on a Saturday morning. The town's housing runs across every era. There are older solid-wall cottages and terraces around the centre and in Oxhey, substantial Victorian and Edwardian villas in Cassiobury, large interwar estates through North Watford and Garston, and a great deal of post-war and modern development including flat conversions in and around the centre. Water is a defining feature locally. The River Colne and the Grand Union Canal run through the area, and there are low-lying pockets and properties on sloping ground where water runs towards the building rather than away from it. Those conditions push more water at the base of walls and into cellars than a flat, well-drained site ever would. We also see a lot of period property in the surrounding villages where soft brick and lime mortar have been repointed or rendered in hard cement, which traps moisture rather than shedding it. ### Areas we cover within Watford - Watford town centre - Cassiobury - Oxhey - Bushey - Croxley Green - Rickmansworth - Abbots Langley - Garston - North Watford - Leavesden - Chorleywood - Kings Langley ### Property types we work on Victorian cottages and terraces, Edwardian villas, interwar and post-war semis, converted flats and period village properties. ### Common Watford requests Rising damp in older solid walls, wet cellars in low-lying or sloping sites, and penetrating damp through cement-rendered elevations. ### Coverage around Watford Bushey, Croxley Green, Rickmansworth, Abbots Langley, Chorleywood, Kings Langley and the surrounding Hertfordshire villages. ### When you can reach us - Monday8am – 8pm - Tuesday8am – 8pm - Wednesday8am – 8pm - Thursday8am – 8pm - Friday8am – 8pm - Saturday8am – 1pm - SundayClosed Services in Watford ## Every service available across Watford ### 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 Watford ### 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 Watford ### 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 Watford ### 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 Watford ### 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 Watford ### 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 Watford ### 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 Watford ### 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 Watford ### 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 Watford ### 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 Watford Why choose us ## Why Watford homeowners use Charge Building Services ### Diagnosis before a quotation Watford's mix of eras means damp has many possible causes. The free survey establishes which one you actually have before anything is priced. ### Right treatment for old masonry Soft brick and lime mortar need compatible mortars and breathable repairs, not hard cement that traps water in the wall. ### Two ten-year guarantees 10-year company workmanship guarantee plus a separate 10-year QANW insurance-backed guarantee on damp treatment. ### Waterproofing experience Cellars and below-ground rooms on damp, sloping or low-lying Watford sites waterproofed with accredited tanking and cavity drain membrane systems. ### Approved Sovereign & Wykamol contractor Accredited systems installed to the manufacturer's specification on every damp treatment. ### Fixed prices and £2m cover Written fixed-price quotation, 50% deposit and 50% on completion by bank transfer, £2,000,000 public liability insurance held. Local damp problems ## What drives damp in Watford properties Two things shape Watford's damp problems: the age spread of the housing and the local ground and water conditions. Older solid-wall property has no cavity and often has a slate DPC at the end of its life, while interwar housing has early cavity construction that is easily bridged. The River Colne, the canal and the area's sloping topography mean plenty of sites where surface and ground water move towards buildings. Where drainage is poor or ground levels have been raised, that water ends up in the base of the wall or in the cellar. ### Failed slate damp proof courses Older Watford cottages and terraces show tide marks, salting and perished plaster where the original slate DPC has cracked or been breached. ### Wet cellars on sloping sites Where ground falls towards the property, cellars and lower-ground rooms take water under pressure and need structural waterproofing, not paint. ### Cement render and repointing on soft brick Hard cement finishes applied to period masonry crack and trap moisture, spalling brick faces and pushing damp inwards. ### Bridged interwar cavities Debris and mortar droppings at the cavity base in 1930s estate housing carry water across to the inner leaf. ### Poor surface drainage Blocked gullies, missing drainage to patios and drives, and ground raised above DPC level put standing water against walls. ### High-level and roof defects Failed flashings, valley gutters, verges and defective flat roofs on extensions produce damp at ceiling and upper-wall level. Our process ## The same five steps on every job in Watford 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 Watford in detail ### Rising damp treatment in Watford The pattern of genuine rising damp is consistent: a tide mark at a fairly even height, salt deposits, plaster that sounds hollow, peeling paint at skirting level and skirtings soft on the back face. Where the survey confirms it, the treatment is an injected chemical damp proof course using an accredited Sovereign or Wykamol system plus salt-retardant replastering. Replastering is not optional. Old plaster holds hygroscopic salts that continue drawing moisture from the air, so a wall can remain visibly damp even after a new DPC has stopped the actual rise. Before specifying treatment we rule out bridging and drainage faults, which are common on Watford sites with raised patios, new drives or ground sloping towards the building. Correcting those is frequently cheaper and solves the problem outright. ### Cellars and structural waterproofing in Watford The local topography and watercourses mean below-ground rooms here are often genuinely wet rather than just musty. Making a cellar usable means designing for water arriving under pressure: a cementitious tanking system bonded to sound masonry, or a cavity drain membrane with a perimeter drainage channel discharging to a gravity drain or a sump and pump. We detail the vulnerable points properly, floor-to-wall junctions, service penetrations, steps and reveals, because those are where basement waterproofing fails. Where a pump is required we specify it for the volume of water the space actually takes. Waterproof paint and damp-sealing coatings are not a solution for a wet Watford cellar. They resist nothing when water is being pushed through the structure. ### Render, repointing and period masonry A lot of the period property around Watford and the neighbouring villages has been repointed or rendered in hard cement at some point. On soft handmade brick with lime mortar that causes damage: moisture is forced to leave through the brick face rather than the joint, so faces spall and the wall holds water. Our approach is to match the repair to the wall, appropriate mortar mixes, breathable render where suitable, replacing badly spalled brick, and correcting sill and drip details. Where cracking has opened a path for water we stitch masonry with helical bars rather than simply filling the crack. ### Surveys for sales, lettings and remortgages Damp flagged in a homebuyer report or valuation holds up transactions. The free survey gives you a clear statement of cause and a written fixed-price quotation, which is usually what is needed to agree a way forward with a buyer, seller or lender. Where we carry out the treatment, the 10-year workmanship guarantee and the 10-year QANW insurance-backed guarantee give the documentation that follows the property. ### Wider coverage from Watford As well as Watford we cover Middlesex, Harrow and the neighbouring towns, London and West London, Brent, Slough, Buckinghamshire, High Wycombe and Surrey. Calls are answered Monday to Friday 8am to 8pm and Saturday 8am to 1pm. Tell us if a date is driving the job and we will be honest about whether we can meet it. Questions ## Damp proofing in Watford, common questions Do you cover Watford and the surrounding areas?Yes: Watford town centre, Cassiobury, Oxhey, North Watford, Garston, plus Bushey, Croxley Green, Rickmansworth, Abbots Langley, Chorleywood and Kings Langley. How quickly can you get to Watford?Watford is a straightforward run from our Harrow base. We take calls Monday to Friday 8am to 8pm and Saturday 8am to 1pm and book surveys to suit you, including evenings. What does damp proofing cost in Watford?It depends on the wall construction, the length treated, the replastering required and access, so we survey free of charge and give you a written fixed price. Do you deal with urgent water ingress in Watford?Active ingress is prioritised for survey within our working hours of Monday to Friday 8am to 8pm and Saturday 8am to 1pm. My cellar floods or stays wet; can you fix it?Yes. Depending on the structure we use cementitious tanking or a cavity drain membrane system with drainage and, where needed, a sump and pump. Can you work on a period or listed-style property?We use repairs compatible with older masonry; suitable mortar mixes and breathable finishes rather than hard cement that traps moisture. For listed buildings, check consent requirements before work begins. 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 replaster after treatment?Yes: salt-retardant replastering left flat and ready for decoration, with skirtings reinstated and the area cleaned down. Are you insured?Public liability insurance is held to £2,000,000. Is there a charge for the survey or quotation?No. Survey, diagnosis and written fixed-price quotation are free, with no obligation to proceed. Free survey ## Book a free damp survey in Watford Send the postcode and tell us what you are dealing with; a damp wall, a wet cellar or staining that follows heavy rain. We will survey it and quote a fixed price. - Free survey, diagnosis and written fixed-price quotation in Watford - 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 Stanmore Substantial 1930s and modern detached houses, sloping sites off Stanmore Hill and below-ground rooms all bring their own damp problems. Free survey, written fixed price, ten-year guarantees on treatment. View area ### Damp proofing in Harrow We are registered and based in Harrow, so this is where we know the streets, the housing stock and the recurring faults best. Free survey, honest diagnosis, fixed price and ten-year guarantees on damp treatment. View area ### Damp proofing in Pinner From the timber-framed village core to 1930s mock-Tudor semis and detached houses, Pinner damp has particular causes. Free survey, written 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 ### 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 London London's solid-wall terraces, converted flats and cellared townhouses generate most of the damp we treat. Free survey, honest diagnosis, fixed price, and ten-year guarantees on the 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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