Construction and new-build mastic in Coombe, Kent
Sealant work in Coombe for main contractors, managing agents and facilities managers: mastic packages for new-build and refurbishment projects, quoted at a fixed price.
- Window and door perimeters that won’t pass inspection
- A long mastic snag list close to completion
- Internal caulk splitting as the building dries out
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
On a new build, the mastic package is one of the last trades through each area. Mastic Doctor takes on mastic packages for main contractors and developers on schemes in Coombe, sealing plot by plot or floor by floor as areas are released. We work on cladding and panel joints, window and door perimeters and sanitary and kitchen joints, and what we’re called in for most is frame perimeters left unsealed or poorly sealed and internal caulk splitting as the building dries out. A single leaking joint is often how a building in Coombe first comes to us: we look at the rest while we’re there and tell you what we find.
Construction in and around smaller places such as Coombe is often barn conversions, small groups of houses or extensions to halls and schools. Perimeters, facade joints and internal sealant all need doing properly, however small the scheme.
Building owners and contractors get the same cover: twelve months on the work we carried out. Faults in the structure, damage and other trades’ work fall outside it, and we say so plainly.
- Location
- Coombe (CT3, CT13)
- Wider area
- Kent
- Guarantee
- A 12-month guarantee
- Quote
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Page updated
- 3 November 2026
Do you need construction mastic in Coombe?
Wide, tapered or inconsistent gaps around frames are a common problem. Every product has limits on how wide a joint it can bridge. Better to raise it at the start than seal a joint that’s bound to fail.
It’s worth sending us details if you spot any of the following:
- Sanitary sealant damaged by following trades
- A long mastic snag list close to completion
- A mastic package split between trades with no clear owner
- Perimeter gaps outside the sealant’s range
When a school such as Ash Cartwright and Kelsey Church of England Primary School is extended or refurbished, the mastic package is often squeezed into the holidays.
Comparing quotes
- What the guarantee covers, and for how long
- Their plan for phasing and protecting the area
- Who will actually carry out the work
- Their public liability cover
Questions we are asked in Coombe
Can you work to our programme on a site in or near Coombe?
Yes. Send the programme and drawings, and we will plan the mastic to suit the stages. We’re CHAS accredited and a Constructionline member, and paperwork such as RAMS is confirmed with the quote.
Will you take on work at estates like Birnham Farm Business Centre, close to Coombe?
Yes. Our area takes in Coombe and its surroundings, with estates and business parks such as Birnham Farm Business Centre included. To start, just give us a call on 01277 525 020 or send details through our quote form with the unit, the joints involved and your access times.
How much does the work cost?
That depends on the job: quantities, access, the product and any phasing. Call for a fixed quote.
Does weather affect external mastic work?
Conditions have to suit the product before external work starts. Wet or cold joints cause adhesion problems, so we wait rather than redo work.
Can you fit around our programme?
Working to your programme, we seal each area as it’s handed over. The sequence is settled with your site team and adjusted as things change.
Will you just go over the old sealant?
No. Failed sealant is removed and the faces cleaned back to sound, dry material first, since fresh sealant will not bond reliably to aged material.
Can you follow the specification on our project?
Yes. Send it with your enquiry, and the quote will be based on it.
Nearby places to Coombe
Also in Coombe
Why deal with it now?
On a refurbishment, there’s a choice between resealing existing frames and replacing them. Sound frames often need only a new perimeter seal, which is a much smaller cost. If the frame is life-expired, we’ll tell you. For buildings around smaller places like Coombe, water damage can go unnoticed for longer, especially where a building isn’t used daily, so a failed joint can leak for a while before anyone sees it. Renewing joints in good time avoids the problem.
Cost follows what’s involved: removing old material, preparing the joints, the product, the access and how the work is phased. Call for a fixed quote and we will explain how it’s made up.
Why choose Mastic Doctor in Coombe
- Old sealant cut out, never sealed over
- Colour options checked against the specified product
- Commercial sealant work since 2005
- Colours chosen to suit frames, cladding or finishes where possible
See how commercial sealant jobs are priced and how we’re accredited.
General trades versus a specialist
For most general trades, sealant is a sideline. A specialist prepares properly, controls joint depth and picks a product with the right movement class, which is what makes a joint last.
Site maintenance staff can often handle a short internal joint. The usual problems come from preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.
What we can’t put right
Being straight saves everyone time. Fresh joints won’t solve:
- Fire-stopping design or sign-off (that’s for the designer, fire engineer and building control)
- Joint design decisions that belong to the architect or engineer
- Frames fitted out of tolerance
Not sure which it is? You can call the office on 01277 525 020 or use the quote form and we’ll tell you honestly before you book.
What we seal
- Floor and skirting junctions
- Sanitary and kitchen joints
- Brick and block movement joints
- Window and door perimeters
- Cladding and panel joints
- Internal decorators’ caulk
For managing agents and facilities managers
We take on planned maintenance as well as one-off repairs: working through a building or an estate in stages that fit your budget. Sites in Coombe can sit alongside others in a wider programme across Kent.
As a CHAS accredited contractor and Constructionline member, we are straightforward to vet for your supplier list. We’re fully insured, and our insurance certificate can go with the quote.
From enquiry to sign-off
Site rules come first: signing in, inductions and any permit to work. Once we’re cleared to begin, we take the joints in the sequence agreed with you, and each area is checked before we leave it. Smaller jobs around Coombe can be grouped with others nearby, which keeps travel down. You’ll have a fixed quote before work starts.
- Drawings, specification and programme come to us.
- Quantities are measured and a fixed price returned.
- We agree with the site team which areas come first.
- Plots or floors are sealed as they’re handed over.
- Joints are prepared, backed and sealed to the specification.
- After snagging, the work is handed over under our 12-month guarantee.
Preparing the site
- Confirm the product named in the specification
- Flag any permit to work we’ll need
- Agree which areas must stay open
Getting a fixed quote
Every job follows the same four steps: send details, get a quote, we seal, guaranteed. To take the first step, ring 01277 525 020 or send details through our quote form.
Read more
Facades, frames and programmes in Coombe
Coombe sits in one of the drier corners of the country, the South East. Winter mornings still bring frost and condensation on frames and panels, which is why external dates are agreed with the site manager. Coombe lies roughly 62 miles out from central London. Building activity in the commuter belt runs from new flats near stations to business park refurbishments, and main contractors there need mastic that keeps to the programme.
Recladding or extending a unit at a site like Birnham Farm Business Centre (0.8 miles south of Coombe) brings panel joints and frame perimeters into the programme. With historic properties like Goodnestone Park (to the south-west of Coombe) in the area, refurbishment work often meets old masonry that needs compatible sealants.
Coombe is about 6 miles north-west of Deal, in Kent. Commercial clients in Coombe use us for work on mastic packages. Coombe is one of 931 places we cover in Kent. London is covered too, some 62 miles away.
We take on mastic packages across the CT3 and CT13 postcode area. For a building on Coombe Lane, Saunders Lane and Langdon Avenue or nearby, we can quote for mastic packages. Close to Coombe, our area also takes in Flemings (1 mile south-west), Ash (1 mile north-west), Weddington (1 mile north), Guilton (1 mile west) and Hammill Park (1 mile south). Further afield, our area takes in Canterbury (9 miles west), Margate (8 miles north-east), Dover (9 miles south), Folkestone (14 miles south-west), Ramsgate (7 miles north-east) and Broadstairs (9 miles north-east).
Near you in Coombe
We work on buildings around The Chequer Inn and Sandwich Technology School, among other places. Coombe’s nearest station is Sandwich station, about 2.1 miles east of the centre. Well-known places in the area include White Mill (1.6 miles east). Open spaces near Coombe include Monk's Wall nature reserve.