Construction and new-build mastic in Crofton, Greater London
Construction mastic for Crofton, from a contractor working since 2005. Fully insured, with a 12-month guarantee.
- Missed perimeter joints on a new elevation
- Early adhesion failures on new external joints
- Internal caulk splitting as the building dries out
Construction mastic in Crofton
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
About our construction mastic in Crofton
Mastic Doctor has been a subcontractor on construction projects for over 20 years. Quantities come off the drawings, the sequence is agreed with the site manager and the work follows the trades. For construction mastic on a scheme in Crofton, send drawings through our quote form, or phone or email us to talk it through. If you are dealing with different trades sealing to different standards and snag items on joints that need redoing before handover, we can help. Most enquiries from Crofton start with one failed joint and grow into a wider look at the building: we look at the rest while we are there and tell you what we find.
Every London site, Crofton included, is inside the ULEZ, which applies to deliveries and contractors’ vans alike. Alongside that, sites usually need booked deliveries and a plan for where materials go.
Every job is signed off with a 12-month guarantee. It’s a plain promise: if the work we did fails within twelve months, we return to fix it.
- Where
- Crofton (BR6, BR5)
- Region
- Greater London
- Cover
- 12 months on our workmanship
- Price
- Quoted before any work starts
- Phone
- 01277 525 020
- Updated
- 3 November 2026
When to bring in a specialist
Putting right a botched joint often costs more than sealing it well at the start, since all of it has to come out and the faces be cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.
Using site staff can make sense for a small touch-up, but anything bigger is another matter: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.
Why it’s worth doing now in Crofton
Some packages split mastic across the window fitter, kitchen fitter and plumber. The result tends to be uneven finishes and arguments about who should seal what. One mastic subcontractor for the lot keeps it simple and a consistent finish. 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.
Larger quantities, tricky access or phasing all shape the price. So do site requirements such as inductions and permits, along with the time of year for external work.
Why appoint us
- Coloured sealants to suit the setting, where available
- Colours chosen to suit frames, cladding or finishes where possible
- Fully insured, including public liability cover
- Over 20 years of commercial sealing
Take a look at how commercial sealant jobs are priced or how we’re accredited.
Facades, frames and programmes in Crofton
A 2-mile radius around Crofton takes in several hotels. Hotel extensions and refits usually have to fit around bookings, so mastic dates are tight. Site traffic in Crofton falls within London’s ULEZ, like everywhere else in Greater London. Deliveries are booked and storage is tight, so mastic materials come in as needed.
When a school such as Crofton Infant School is extended or refurbished, the mastic package is often squeezed into the holidays. Projects at colleges like Bromley College, 2.1 miles to the west of Crofton, tend to run to term dates, so the mastic is planned tightly. Units on estates such as Halo Business Park, 1.7 miles north-east of Crofton, tend to be reclad and refitted as tenants change, and each job leaves cladding and perimeter joints to seal.
Crofton is about 1 mile south-west of Orpington, in Greater London. We cover commercial sites throughout Crofton, for single jobs and planned programmes alike. Across Greater London, 764 places are covered, including Crofton. There’s a separate page for London, about 11 miles away.
If you need construction mastic in BR6 and BR5, the process matches everywhere else we work: details, then a fixed price, then sealing and a 12-month guarantee. Streets here include Grange Road, Reed Avenue and Gumping Road, and sites on any of them can send details for a fixed quote. Nearby places we also cover include Broom Hill (1 mile north-east), Locksbottom (1 mile west), Petts Wood (1 mile north), Farnborough (1 mile south) and Green Street Green (2 miles south) for mastic packages. Nearby towns on our patch include London (11 miles north-west), City of Westminster (14 miles north-west), Marylebone (14 miles north-west), Kensington (15 miles north-west), St Pancras (14 miles north-west) and Shoreditch (12 miles north-west).
Near you in Crofton
In Crofton, that means premises near The Priory School, Newstead Wood School and The Maxwell pub, among other places. Crofton has its own railway station: Orpington station. Other landmarks nearby include Orpington Hospital (1.1 miles south-east) and Crofton Roman Villa (less than half a mile south-east). Green spaces nearby include Summer Hill and The Warren.
Owners, agents and contractors
We work for building owners and managing agents on sealant work across single buildings or whole portfolios around Crofton. One quote can cover more than one site, so there’s one set of paperwork to deal with.
Hospitality, education, healthcare, office and retail clients come to us directly as well. The work is planned around how the building runs, so guests, pupils, patients or staff are disturbed as little as possible.
Other services in Crofton
How the quote is worked out
Quotes vary with the job. It mainly depends on:
- Whether old sealant has to be cut out first
- Site requirements such as inductions and permits
- Location, for remote and island sites
- The size and state of each joint
The price depends on the quantity of joints, what has to come out first and the access. Call for a quote when you are ready.
What we need to price the job
Diagnosis starts before we arrive. Tell us:
- Whether an asbestos survey exists
- Any specification or named product
- Where the site is, with the postcode
- Clear photographs of the problem areas
Need a figure for a tender or a budget? Send the scope and any drawings, and we’ll return a fixed quote you can plan around. If you have questions first, give us a call on 01277 525 020 or email the details over.
Questions about Crofton
Is Halo Business Park, near Crofton, within your area?
Yes, sites like Halo Business Park are within our area, along with the rest of Crofton. Send details of the unit and the work through our quote form for a quick quote.
Do you work in London buildings with loading restrictions?
Yes, we plan every London job around the building’s own access rules. The building manager’s rules go straight into our method. All of Greater London is inside the ULEZ, and our planning allows for it
Does the weather affect the work?
Outside, yes. The joint has to be dry and within the product’s temperature range, so frost, rain or cold mornings can delay outside work. Inside work is seldom held up.
Can you fit around our programme?
We follow the trades through the building. Each plot, floor or elevation is sealed when it’s ready, and we’ll raise anything that holds the work up.
How soon can the area be used again?
We’ll confirm how long the chosen product needs to cure, and sign any area that should be left alone.
What happens if old sealant might contain asbestos?
Asbestos is possible in some older mastics, particularly in buildings from before 2000. We check the asbestos register before cutting out old sealant in an older building, and if asbestos is suspected, work stops until it’s tested. Removing asbestos is a job for asbestos specialists, not us.
Will you just go over the old sealant?
No, never. Sealing over old material is one of the classic causes of early joint failure, so it all comes out first.
Our process
We begin with a short walk round with whoever looks after the building, agreeing which joints are in scope, where to start and what must stay open. Then we strip out anything that has failed, prepare every joint and seal it. All of Greater London is in the ULEZ, and kerbside space in Crofton can be scarce. If there’s a loading bay, a car park or a permit we can use, tell us when you send details.
- We start with the drawings, specification and programme.
- We take off quantities and return a fixed quote.
- We agree with the site team which areas come first.
- Each area is sealed when it’s released.
- Every joint is cleaned, set to depth and sealed with the specified product.
- After snagging, the work is handed over under our 12-month guarantee.
Before we start on site
- Let us know about inductions and permits
- For older buildings, check the asbestos register before work
- Send your site hours and access windows
Get a fixed quote
A handful of photos and a postcode is the fastest way to a quote. Upload them with the quote form, or ring 01277 525 020 or email the details over if you’d rather talk the job through.
Read more
Different surfaces, different methods
Window and door perimeters
Frames sealed into the opening keep rain out of the reveal. We use the specified perimeter sealant, typically a low-modulus neutral-cure silicone.
External facade and movement joints
External movement joints often need primer, depending on the substrate. We prime where the manufacturer specifies and work only when conditions suit.