Mastic Sealing in Hersham
Need mastic sealing in Hersham? It’s simple: send details, get a quote, we seal, guaranteed.
- Damp patches beside frames
- Cracked, hardened mastic round windows on a block
- Repeated reactive repairs to the same buildings
Mastic sealing for Hersham sites
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Building owners, agents and FMs in Hersham
We work for building owners and managing agents on everything from one building to a spread of sites. Several sites can go on one quote, so there’s one set of paperwork to deal with.
FMs need a contractor who is easy to get on site. Tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we will confirm with the quote.
About our mastic sealing in Hersham
Our clients include managing agents, property factors in Scotland, housing associations and landlords with block or commercial portfolios. Many prefer a planned programme to one-off visits, with each block quoted and scheduled in turn. Most enquiries involve damp patches beside frames and movement joints with sealant missing, across communal kitchens and washrooms, balcony and threshold joints and window and door perimeters on blocks. A single leaking joint is often how a building in Hersham first comes to us: we check the joints around it and give you an honest view of what needs doing now and what can wait.
Places the size of Hersham normally have some housing association stock, small blocks and mixed-use buildings. The mastic around their frames and external joints ages like anywhere else.
The 12-month guarantee is for workmanship rather than wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we spell out the cover before we begin.
- Place
- Hersham (KT12)
- Wider area
- Surrey
- Guarantee
- 12 months on our workmanship
- Quote
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Last updated
- 3 November 2026
When to call us in Hersham
Buildings move with temperature and moisture, and every joint has to stretch and squeeze with them. If the joint or the product wasn’t suited to the movement, it splits long before it should.
Most enquiries start with one or more of the following:
- Occupiers reporting cold air round windows
- Damp patches beside frames
- Patchy repairs in mismatched sealant
- Movement joints with sealant missing
If your remit includes a building such as Bell Farm Primary School, frame and door mastic can be programmed for the holidays.
What your quote should include
- What level of public liability insurance do they hold?
- How they’ll work around occupants
- How joint depth will be controlled
- Whether old or failed sealant will be cut out, not overlaid
How a job runs
Working in a building that stays open takes some planning. The work area is signed and kept contained, with routes through the building left open and work section by section so the rest of the building stays in use. Work in places the size of Hersham is planned as a single visit where we can. Clear photographs and measurements help us bring the right products.
- A building-by-building inspection lists the failed joints.
- You get a fixed quote, per block or for the whole programme.
- Dates and areas are agreed so occupiers can be told.
- Failed sealant is removed and the faces prepared.
- New sealant goes in with backing rod and primer where needed.
- Each building is checked and signed off with the 12-month guarantee.
Preparing the site
- Tell us your opening times and when work is allowed
- Move anything stored against the joints
- Send any specification or drawings in advance
Getting a fixed quote
Let us know the site, the scope and your timescale, and we will put a fixed quote together. The easiest way is to phone 01277 525 020 or email the details over.
Advice
Common questions from Hersham clients
Is Hersham too far out for you?
Not at all. Hersham is within our area. We cover Greater London and the counties of the South East. Where we can, we group nearby jobs to make the most of each trip.
Is Hersham Place Technology Park, near Hersham, within your area?
Yes. Our area takes in Hersham and its surroundings, with estates and business parks such as Hersham Place Technology Park included. Send details of the unit and the work through our quote form for a quick quote.
How much does the work cost?
That depends on the job: the volume of work, the access, the specified product and how it’s phased. Call for a fixed quote and we’ll price it properly.
How do I request a quote?
There are four steps: send details, receive a fixed quote, we carry out the work, and it’s guaranteed. The first step only needs photos and a postcode.
Is mastic sealing guaranteed?
Our workmanship carries a 12-month guarantee, backed by public liability insurance.
Can you work to our specification?
Yes. The specification and the manufacturer’s installation guidance are what we work to, and we raise anything unclear before work begins.
How long will the new sealant last?
It depends on movement, UV and weather, cleaning, traffic and the product. Sealant joints are maintenance items, so inspect them regularly.
For owners and agents in Hersham
The 2 miles around Hersham include three care or nursing homes. Care home owners need frame and external mastic kept sound without unsettling residents. Hersham lies roughly 16 miles out from central London. Managed blocks of flats are a big part of commuter-belt property; their frame mastic often ages block-wide.
Churches, halls and community buildings such as Church of St Peter are looked after by trustees and committees like any other owner, and their frames, doors and external joints need mastic renewed in time. Landlords with units on estates such as Hersham Place Technology Park (less than half a mile south-east of Hersham) can bring frame, door and external mastic across several units into one programme.
Hersham is about 1 mile south of Walton-on-Thames, in Surrey. Businesses, contractors and managing agents in Hersham can call on us for mastic joints, as part of our coverage of Surrey. Hersham is one of 379 places we cover in Surrey. There’s a separate page for London, roughly 16 miles from Hersham.
Anyone looking for mastic sealing in KT12 gets the same process as the rest of our area: details, then a fixed price, then sealing and a 12-month guarantee. If your site is on Police Station Road, Queensway South and Queensway or close by, we can quote for mastic joints. You will find Hersham on or near the A244, so getting applicators and materials to site is simple. If your building is just outside Hersham, we cover 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). Nearby towns on our patch include 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).
Local landmarks in Hersham
We work on buildings around The Barley Mow Public House, West End Common and Three Rivers Academy, among other places. The closest station to Hersham is Walton-On-Thames station, roughly 0.6 miles north-west. Nearby you will also find No. 2 New Zealand General Hospital (1.6 miles north-west) and Chessington Castle Hill (4.8 miles east). Green spaces nearby include Claremont Lake and Jubilee Wood.
Maintenance after handover
Every sealant joint needs some looking after, and their life depends on movement, exposure, cleaning and use. Our advice:
- Avoid piecemeal callouts where you can
- Protect low-level joints in entrances
- Check sealant joints during planned building inspections
- Share your contractor requirements early
If paintable sealant was used, decoration can follow once it has cured. Silicone usually can’t be painted, so keep decorators off it unless told otherwise.
Mastic fails gradually, then all at once in a wet spell. Resealing when cracking first shows avoids water damage and the complaints that come with it.
When it isn’t the sealant
We seal joints; we don’t mend everything behind them. On its own, sealant can’t deal with:
- Old mastic suspected of containing asbestos, which must be tested and dealt with by a specialist first
- Glazing that needs replacing
- Leaks from above rather than through a joint
Not sure which it is? You can phone 01277 525 020 or email the details over and we’ll tell you honestly before you book.
Joints and surfaces we work on
- Communal entrances and stairwells
- Window and door perimeters on blocks
- Balcony and threshold joints
- Communal kitchens and washrooms
- External wall and movement joints
- Shopfronts below residential blocks
Towns and villages near Hersham
Other services in Hersham
Leave it or put it right?
A bead run over old mastic can look like a repair. It doesn’t bond and typically fails within a short time. Full removal and proper preparation is what lasts. Small buildings around Hersham suffer from failed joints as much as large ones. Catching it early means a reseal rather than repairs.
There’s no price list, since every building and every scope is different. For a fixed figure, call for a quote and we’ll price your job on its own details.
Why choose Mastic Doctor in Hersham
- Sealing commercial buildings since 2005
- Joints cleaned back to sound surfaces
- Standard and matched colours in many product ranges
- Constructionline member for supplier checks
Read how commercial sealant jobs are priced or how we’re accredited.