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.
- Bath and shower joints scraped during the final clean
- Frame gaps too wide for sealant alone
- Window and door perimeters that won’t pass inspection
Construction mastic in Coombe
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Construction mastic in Coombe, done properly
Perimeter sealing outside needs a dry joint and the right temperature. Cold or damp mornings, frost and condensation on frames can all hold external sealing up. Internal sealing often fills those days. If you have a long mastic snag list close to completion and perimeter gaps outside the sealant’s range, we can put it right. Most enquiries from Coombe start with one failed joint and grow into a wider look at the building: we look at the rest while we’re there and tell you what we find.
Construction in a London area such as Coombe means working on constrained sites: limited storage, booked deliveries and access shared with other trades. We fit around the programme, sealing each elevation or floor as other trades hand over.
Our workmanship is guaranteed for 12 months. If our installation lets you down in that time, we return and fix it.
- Where
- Coombe (CR0, CR2, CR9)
- Wider area
- Greater London
- Guarantee
- 12 months on every job
- Quote
- A fixed quote before we start
- Telephone
- 01277 525 020
- Last updated
- 3 November 2026
Owners, agents and contractors
Agents, factors and owners’ representatives all follow the same route: send details, get a fixed quote, we seal, guaranteed. Keys, access and contacts can be agreed in advance.
For main contractors, we work as the sealant subcontractor, on new build and refurbishment alike. Programme, specification and site rules come first, with CSCS-carded applicators on site.
Your questions answered
Does your area include sites such as Twin Bridges Business Park, near Coombe?
Yes. We cover Coombe and the area around it, including industrial estates, business parks and retail parks such as Twin Bridges Business Park. A few photos and the unit address let us price the work.
Can work at a site such as Croydon College fit around teaching?
Yes. Education sites usually want the work in vacations or in phases during term, and we plan to suit. Let us know which documents your site asks for, and we will confirm them alongside the quote.
How soon can the area be used again?
The product and site conditions decide that. Some products skin over quickly but need longer to cure fully, and we confirm it before leaving site.
Do you work in Coombe?
Yes. We cover Coombe, and you can give us a call on 01277 525 020 or email drawings and photos to get started.
How do you work with the site programme?
The programme sets the job. Tell us the sequence and we’ll plan applicators around it so sealing follows the trades.
What guarantee comes with a mastic package?
Our workmanship carries a 12-month guarantee from sign-off. Damage by others after we have finished isn’t covered.
How long does a job like this take?
It depends on the scope, but the work typically takes anything from a day of snagging to several weeks of plot-by-plot sealing on a phased scheme. Larger or phased jobs take longer, and we will give you a timescale with the quote.
Contractors’ notes for Coombe
The ULEZ covers the whole of Greater London, Coombe included, so site vehicles need to meet its standards or pay the daily charge. Delivery slots and scarce storage shape how and when the mastic goes in. The area within 2 miles of Coombe holds a good number of hotels. Hotel schemes tend to have fixed reopening dates, so the mastic is programmed tightly with the other trades.
When a college such as Croydon College (to the north-west of Coombe) builds or refurbishes, the mastic package typically has to fit around students and staff. School extensions, at buildings such as Coombe Wood School, usually run to the summer holidays, mastic included. For a contractor at a hotel such as Croydon Park Hotel, 1.1 miles north-west of Coombe, the mastic often has to be finished before a reopening date.
Coombe is about 1 mile east of Croydon, in Greater London. Commercial clients in Coombe can call on us for mastic packages. Coombe is one of 764 places we cover in Greater London for mastic packages. London is covered too, some 9 miles away.
Anyone looking for construction mastic in CR0, CR2 and CR9 gets the same process as the rest of our area: details, then a fixed price, then sealing and a 12-month guarantee. Buildings on Oaks Road, Coombe Road and Coombe Lane are within our area. Close to Coombe, our area also takes in Croydon (1 mile west), Addiscombe (1 mile north), South Croydon (1 mile south-west), Shirley Oaks (1 mile north-east) and Shirley (1 mile north-east). Nearby towns on our patch include London (9 miles north), City of Westminster (11 miles north), Marylebone (11 miles north), Kensington (11 miles north-west), St Pancras (11 miles north) and Shoreditch (11 miles north).
Local landmarks in Coombe
We work on buildings around Coombe Lodge pub, Royal Russell School and St Peter's Primary School. For rail, the closest station is South Croydon station, roughly 1 mile west. A little further out are St George's Walk (1.4 miles north-west) and Croydon Airport Visitor Centre (2.1 miles west). Open spaces near Coombe include Bramley Bank and Duppas Hill.
Our process
We begin with a short walk round with whoever looks after the building, to confirm the scope, the order of work and any areas we must keep clear. After that, any old or failed material is removed, each joint is prepared and the new sealant goes in. All of Greater London is in the ULEZ, and kerbside space in Coombe can be scarce. If there’s a loading bay, a car park or a permit we can use, tell us when you send details.
- Drawings, specification and programme come to us.
- We take off quantities and return a fixed quote.
- The sequence is agreed with the site manager.
- Each area is sealed when it’s released.
- Joints are prepared, backed and sealed to the specification.
- After snagging, the work is handed over under our 12-month guarantee.
Preparing the site
- Let building users know which areas are affected
- Flag any permit to work we’ll need
- For older buildings, check the asbestos register before work
Quotes
A handful of photos and a postcode is the fastest way to a quote. Upload them with the quote form, or call 01277 525 020 or email drawings and photos to discuss it first.
Read more
Quoting for work in Coombe
What shapes the price:
- Distance, for remote addresses
- How accessible the joints are
- Site requirements such as inductions and permits
- Which sealant the job calls for
We don’t publish prices, since every building and every scope is different. Call for a quote.
What we need to price the job
There’s no need for a formal survey. These details are enough to start:
- Asbestos survey details if the building is older
- The postcode of the building
- The type of building and who uses it
- Drawings or a marked-up plan, if available
Photos, drawings or a schedule of the joints and a fixed quote comes back to you. If the job needs a look first, we’ll arrange a site visit.
General trades versus a specialist
What you see is the finished bead, but most of the work is hidden. Backing rod, primer where specified and a joint designed to move with the building are easy to get wrong without experience.
Redoing a failed joint typically costs more than getting it right at the outset, because the whole bead must be removed and the faces cleaned back again. That’s why many clients bring in a specialist from the beginning.
Why deal with it now?
Leaving mastic to whichever trade is fitting the element can look cheaper on paper. In practice it often means different standards, gaps in responsibility and snags nobody owns. A single mastic package gives one point of responsibility. Access in London is hard enough to arrange once, so while access is arranged it pays to renew all failing joints, not just the worst.
Quantities, awkward access and phased working all shape the price. So do site requirements such as inductions and permits, along with the time of year for external work.
Why choose Mastic Doctor in Coombe
- Health and safety: CHAS accredited
- Fully insured, including public liability cover
- Sealing commercial buildings since 2005
- Old sealant cut out, never sealed over
Also near Coombe
Other services in Coombe
What sealant work can’t fix
A few problems need another trade or a different fix, and we say so rather than covering them up:
- Oversized gaps that need packing or adjustment by others
- Joints damaged after sign-off by following trades
- Approving fire stopping as compliant
If you’re not sure, just give us a call on 01277 525 020 or email a schedule or drawings and we’ll give you a straight answer before you book.
Where we work in Coombe
- Window and door perimeters
- Cladding and panel joints
- Floor and skirting junctions
- Sanitary and kitchen joints
- Internal decorators’ caulk
- Brick and block movement joints