Construction and new-build mastic in Coombe, Greater London
Mastic packages for new-build and refurbishment projects in Coombe and across Greater London. CHAS accredited and fully insured, with a 12-month guarantee.
- Inconsistent sealant finishes from plot to plot
- Frame perimeters left unsealed or poorly sealed
- New external sealant already peeling away
Construction mastic for businesses in Coombe
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
How we handle construction mastic in Coombe
External mastic depends on the weather in a way most internal trades don’t. Each sealant has a temperature range, and damp, frost or condensation on frames stops work so it helps to sequence elevations with some flexibility. Internal sealing often fills those days. We work on sanitary and kitchen joints, brick and block movement joints and internal decorators’ caulk, and the usual reasons a site gets in touch are perimeter gaps outside the sealant’s range and sealant knocked or painted over by other trades. For commercial sealant work in Coombe, you deal with one contact from quote to sign-off, for single jobs and planned programmes alike.
Construction in a London area such as Coombe means working on constrained sites: small compounds, delivery slots and shared hoists and scaffold. We fit around the programme, sealing each elevation or floor as other trades hand over.
Work we carry out comes with a 12-month guarantee. Should something we installed fail, ring 01277 525 020 or use the quote form and we will come back to it.
- Place
- Coombe (KT2, KT3, SW20)
- Region
- Greater London
- Guarantee
- 12 months on our workmanship
- Quote
- A fixed quote before we start
- Telephone
- 01277 525 020
- Last updated
- 3 November 2026
How a job runs
On arrival, we sign in, go through any site induction and check how permits are handled. Floors, finishes and fittings next to the joints are covered before any cutting starts, and the work normally takes whatever the programme allows, since the work follows the trades as areas are released. For a job in Coombe, access comes first. Give us the hours we can be on site and we will schedule to suit.
- First we take quantities off the drawings and read through the specification.
- We return a fixed quote that ties the mastic package to your programme.
- Any site paperwork you need (RAMS, insurance certificate, CSCS details) is confirmed with the quote.
- Areas are sealed plot by plot or floor by floor as the trades hand them over.
- Every joint is prepared, set to depth and sealed with the specified product.
- Before handover, snags are dealt with and the package is signed off under our 12-month guarantee.
Before we start on site
- Send any specification or drawings in advance
- Share your working hours and any access restrictions
- Explain the parking and delivery arrangements
Getting a fixed quote
Pricing a project or setting a maintenance budget? We’ll quote against your scope and drawings that you can work with. For a chat about it beforehand, speak to us on 01277 525 020 or email drawings and photos.
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FAQs: Coombe
Will you plan work around the academic year at somewhere like Kingston University?
Yes. We plan campus work around teaching, exams and residence turnarounds. We’re CHAS accredited and a Constructionline member, and paperwork such as RAMS is confirmed with the quote.
Is a hospital such as New Victoria Hospital somewhere you can work?
Yes, healthcare and care buildings are part of our work. Each area is agreed with the ward or department and the estates team in advance.
Do you take on small jobs?
We quote for single jobs as well as large packages and programmes. Photos and a description are enough to start.
Do you offer coloured sealant?
That depends on the product specified. Some ranges are wide, others limited, so we will confirm the colours available for the specified product with the quote.
What accreditations do you hold?
CHAS and Constructionline are both in place, and our applicators hold CSCS cards. We are fully insured for public liability.
Can you send site paperwork?
Let us know which documents the site needs, such as RAMS, an insurance certificate or CSCS details, and we will confirm them with the quote.
Is it fine to apply new sealant on top of old?
No. Failed sealant is removed and the faces cleaned back to sound, dry material first, because fresh silicone will not bond with aged silicone.
Leave it or put it right?
On a refurbishment, there’s a choice between resealing existing frames and replacing them. Sound frames often need only a new perimeter seal. We’ll say so if a frame itself is the problem. In Coombe, each extra visit means more notices, permits and disruption, so cutting the old sealant out fully and doing it right once is the better route.
The price depends on the quantity of joints, how much old material needs removing and how the joints are reached. Call for a fixed quote when you’re ready.
Why choose Mastic Doctor in Coombe
- Clear, fixed quotes
- Colours chosen to suit frames, cladding or finishes where possible
- CSCS-carded applicators
- Workmanship guaranteed for 12 months
See our cost guide or our accreditations.
Cost factors for mastic packages
These are the things that shape the price:
- How accessible the joints are
- Location, for remote and island sites
- Whether the work must be split into stages
- Specialist products, such as fire-rated or hygienic sealants
No two sites price the same: the joint sizes, the specified product, access and working hours each have a bearing. A fixed quote follows once we understand the job.
Sending details for a quote
Whether it’s one area or a whole building, these details speed things up:
- Asbestos survey details if the building is older
- What the building is and how it’s used
- When you need the work done
- Photos of the joints, close up and from further back
For a fixed quote, give us a call on 01277 525 020 or email drawings and photos. You can also send details through our quote form.
Construction mastic in Coombe: the local picture
Coombe has a good number of hotels close by, all within 2 miles. Hotel schemes tend to have fixed reopening dates, so the mastic is programmed tightly with the other trades. Site traffic in Coombe falls within London’s ULEZ, like everywhere else in Greater London. London sites also mean booked deliveries and limited storage, which the mastic programme has to allow for.
On a campus such as Kingston University, 0.6 miles west of Coombe, new teaching buildings and residences are typically built and refurbished around the academic year. Hotel extensions and refits, at places such as The Bull and Bush Hotel Kingston, which lies south-west of Coombe, normally run between busy periods, so the sealing is squeezed into short windows. Units on estates such as Shannon Commercial Centre, 1.5 miles south-east of Coombe, tend to be reclad and refitted as tenants change, and each job leaves cladding and perimeter joints to seal.
Coombe is about 1 mile north of New Malden, in Greater London. Coombe sits inside our coverage, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. Across Greater London, 764 places are covered, including Coombe. We also cover London, around 9 miles from Coombe.
If you need construction mastic in KT2, KT3 and SW20, the process matches everywhere else we work: send details, get a quote, we seal, guaranteed. If your site is on West Road, Crown Road and Traps Lane or close by, we can quote for mastic packages. Nearby places we also cover include Motspur Park (1 mile south-east), Coombe Hill (1 mile north), Kingston Vale (1 mile north-east), Norbiton (1 mile south-west) and New Malden (1 mile south). A short drive away, we cover London (9 miles north-east), City of Westminster (8 miles north-east), Marylebone (8 miles north-east), Kensington (6 miles north-east), St Pancras (10 miles north-east) and Shoreditch (11 miles north-east).
Landmarks near Coombe
Around Coombe, our work takes us to commercial buildings near Canbury School, Coombe Girls' School and The Royal Oak Public House. For rail, the closest station is Norbiton station, roughly 1 mile south-west. Nearby you’ll also find Bentall Centre (1.8 miles west) and White Lodge Museum (1.8 miles north). Green spaces nearby include Kew Gardens Lake and Kingston Hill Road area.
Keeping the joints sound
Keep the joints in good shape with a few simple steps:
- Don’t schedule sealing before decorators and flooring are done
- Flag uneven or tapered frame gaps early
- Ask for joint and product checks before the package is urgent
- Record the products used in the O&M file
At handover, keep the product details with the O&M information. That helps the building owner maintain the joints later, and tells you what to reseal with. We can confirm the handover information you need when we quote.
Sanitary joints that fail early become defects soon after occupation. Water gets behind trays, vanity tops and panels. Getting the product and preparation right first time avoids that.
Different surfaces, different methods
External facade and movement joints
Brickwork, blockwork and panel movement joints need a sealant with the right movement capability. Depth is controlled with backing rod so the bead bonds to two sides only.
Window and door perimeters
Gaps around frames have to be within the sealant’s range. Gaps outside the product’s range are raised with the site team.
When to bring in a specialist
For a quick touch-up, site staff may be fine, but anything bigger is another matter: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.
General builders and handymen seal joints, but it isn’t their main trade. A specialist prepares properly, controls joint depth and picks a product with the right movement class, which is what makes a joint last.