Hersham facade sealing
Facade sealing in Hersham, backed by over 20 years in commercial sealing. Fully insured, with a 12-month guarantee.
- Perimeter joints where frames meet the structure
- Failed sealant on precast panel joints
- Weathered facade joints that have lost their grip
Facade sealing for businesses in Hersham
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
How we handle facade sealing in Hersham
Installing framed glazing systems isn’t part of our work. What we seal are the joints around them: the frame-to-structure perimeter, panel-to-panel joints and window and door surrounds with products suited to facade or glazing perimeter joints. Site teams most often ask us about leaks at window and door perimeters and previous reseals run over old sealant, on coping and flashing joints, stone and brick facade joints and cladding panel joints. Searching for sealant specialists in Hersham? Mastic Doctor has worked for contractors, FMs and building owners since 2005, with CSCS-carded applicators.
Conversions around smaller places like Hersham often join new frames to old masonry or timber, and the sealant at those junctions has to cope with two materials that move differently.
Every job ends the same way: guaranteed. You get a 12-month guarantee on our workmanship, and the quote explains what it covers.
- Where
- Hersham (KT12)
- Wider area
- Surrey
- Guarantee
- 12 months on every job
- Price
- A fixed quote before we start
- Phone
- 01277 525 020
- Page updated
- 3 November 2026
Diagnose, treat, sign off
Working in a building that stays open takes some planning. We sign and contain the area we’re in, keep walkways clear and work section by section so the rest of the building stays in use. If neighbouring businesses or buildings around Hersham need work too, visits can be combined. Mention the building’s opening times and we will work within them.
- First we review photos, drawings or what we saw on a visit, and agree how each joint will be reached.
- Failed sealant is cut out along its full length.
- Both faces are cleaned and, where the product needs it, primed.
- Closed-cell rod fixes the depth, and the sealant grips two sides only.
- A facade-grade sealant rated for the movement goes in, tooled to a concave profile.
- We walk the finished joints with you before handing over.
Before we start on site
- Share the asbestos register for older buildings
- Tell us what induction or permit system the site runs
- Warn occupants and staff about the work
Ask for a quote
Quotes are fixed against the scope you send, so you know the figure before anyone is on site. To start the process, phone 01277 525 020 or email the details over.
Related advice
Building and refurbishing in Hersham
Hersham is in the South East, one of the UK’s drier regions. Even so, frost and condensation on steel and glass are common on winter mornings, so we time external mastic for dry faces and agree it with the site team. Hersham is about 16 miles from central London. Commuter-belt towns tend to see a steady flow of new flats, offices and commercial schemes, which keeps mastic packages in demand.
For contractors on a campus like Kingston University Penrhyn Road Campus, 4.9 miles north-east of Hersham, facade and perimeter sealing has to fit around students and term dates. For a contractor at a hotel such as Oatlands Chaser Hotel, 1.2 miles west of Hersham, the mastic often has to be finished before a reopening date.
Hersham is about 1 mile south of Walton-on-Thames, in Surrey. Commercial clients in Hersham use us for work on facade joints. 379 places across Surrey fall within our area, Hersham among them. There’s a separate page for London, about 16 miles away.
We take on facade joints across the KT12 postcode area, whatever the building. We cover commercial and managed buildings on Police Station Road, Queensway South and Queensway and the roads nearby. Main routes into Hersham include the A244. Sites close to Hersham are covered too, including Burwood Park (1 mile south-west), Walton-on-Thames (1 mile north), Whiteley Village (2 miles south-west), St George's Hill (2 miles west) and Weybridge (2 miles west). A short drive away, we cover Guildford (11 miles south-west), Woking (8 miles south-west), Camberley (14 miles west), Epsom (6 miles east), Redhill (14 miles south-east) and Ewell (6 miles east).
Landmarks near Hersham
Locally, jobs take us to sites close to The Barley Mow Public House, West End Common and Three Rivers Academy, among other places. Hersham’s nearest station is Walton-On-Thames station, roughly 0.6 miles north-west. Well-known places in the area include No. 2 New Zealand General Hospital (1.6 miles north-west) and Chessington Castle Hill (4.8 miles east). Not far away are Claremont Lake and Jubilee Wood.
Common questions from Hersham clients
Is a hospital such as Walton Community Hospital somewhere you can work?
Yes, provided the work is planned with the site’s estates team. The estates team’s permit system and infection-control rules come first, and the work is planned around them.
Is Hersham off your patch?
No. Small places get the same service as large ones. London and every South East county are within our area. We plan jobs in smaller places so return trips are kept to a minimum.
Can you quote from photos?
It depends on the job. Straightforward work can often be priced from photographs and measurements, and bigger or more complex jobs typically get a visit.
Do your applicators hold CSCS cards?
Yes. If you need card details for site access, tell us and we’ll confirm them with the quote.
Do you take on multi-site work?
Yes. We take on portfolio and planned maintenance work, planned site by site to suit how each building is used.
Can you find out why a window is leaking?
Yes. Photos help, and you can call the office on 01277 525 020 or email the details over to arrange a visit. Many frame leaks are sealant failures, though not all.
Do you replace windows or glass?
No. That work needs a glazing specialist. What we seal are the joints around frames and panels across the facade.
Commercial clients in Hersham
We work for building owners and managing agents on everything from one building to a spread of sites around Hersham. Several sites can go on one quote, which keeps the paperwork simple.
For main contractors, we work as the sealant subcontractor, on new build and refurbishment alike. Programme, specification and site rules come first, and our applicators hold CSCS cards.
How the job changes by surface
Window and door perimeters
Frame materials vary, and so does the preparation. Primer goes on where the manufacturer specifies it for that substrate.
Brick and stone facades
On masonry, the sealant has to suit a porous, textured surface. We avoid acetoxy silicone, which can stain some natural stone.
Other services in Hersham
What happens if it’s left?
Leaving failed perimeter sealant also makes the eventual job bigger: wet edges break down, so repairs may be needed before resealing. Early action keeps it simple. Sealant hardens, cracks and loses grip with age, UV and movement. Replacing it before it fails keeps water out.
The specified product makes a difference, as does the preparation each joint needs. Access, phasing and site requirements come into it too.
Why choose Mastic Doctor in Hersham
- Colours confirmed for the specified product
- Fully insured
- Failed material removed, not covered up
- Colours chosen to suit frames, cladding or finishes where possible
Take a look at how commercial sealant jobs are priced and our accreditations.
When to call us in Hersham
Overlaying old sealant is a common shortcut that fails quickly. Cured silicone won’t accept a new silicone bead, and the patch soon lifts.
Look out for the following:
- Discoloured or dirty facade joints
- Weathered facade joints that have lost their grip
- Cladding panel joints that have opened up
- Perimeter joints where frames meet the structure
On a healthcare site such as Walton Community Hospital, 0.8 miles to the north of Hersham, new blocks and refurbishments go on while the hospital keeps running, so mastic work is sequenced carefully.
Questions to ask before you book
- How the existing material will be dealt with
- What level of public liability insurance do they hold?
- Are they CHAS accredited or on Constructionline?
- How long is the guarantee, and what does it include?
Keeping the joints sound
Cleaning and maintenance staff play a part too. Share these points with them:
- Record the product and colour used on each elevation
- Check that rainwater leaves the facade the way it was designed to
- Walk the elevations once or twice a year
- Brief window cleaners about newly sealed joints
If new signage, brackets or services are fixed through a sealed joint, the seal needs making good. Make sure the joint is resealed afterwards using a matching sealant.
Check older buildings for asbestos before disturbing old mastic. Some older mastics contain it.