Construction Mastic in Biggin Hill
Mastic packages for new-build and refurbishment projects in Biggin Hill and across Greater London. CHAS accredited and fully insured, with a 12-month guarantee.
- Snag items on joints that need redoing before handover
- Frame gaps too wide for sealant alone
- Sanitary sealant damaged by following trades
Construction mastic across Biggin Hill
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
Construction mastic in Biggin Hill
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 with projects in Biggin Hill, following the trades through the building as rooms and elevations become ready. The enquiries we see most involve window and door perimeters that won’t pass inspection and failed sealant in an existing building being refurbished, across window and door perimeters, cladding and panel joints and internal decorators’ caulk. Looking for mastic applicators who cover Biggin Hill? We have been sealing commercial buildings since 2005.
Around Biggin Hill, as across London, much of the work is refurbishing existing buildings as well as building new ones. Replacement windows, recladding and fit-outs leave perimeter and facade joints to seal, often next to people still using the building.
The 12-month guarantee covers our workmanship: the preparation, the sealing and the tooling. Damage, later alterations by others and movement beyond what the joint was designed for sit outside it.
- Place
- Biggin Hill (TN16, BR6)
- Region
- Greater London
- Cover
- 12 months on our workmanship
- Quote
- A fixed quote before we start
- Telephone
- 01277 525 020
- Page updated
- 3 November 2026
Your questions answered
Do you cover business parks and estates near Biggin Hill, such as Biggin Hill Airport Trading Estate?
Yes. Estates, retail parks and business parks around Biggin Hill, Biggin Hill Airport Trading Estate among them, are all within reach. A few photos and the unit address let us price the work.
Can you work in a London building with booked loading and goods-lift slots?
Yes. Inductions, permits and timed loading are routine for us in London. Send the building rules and access times with your enquiry.
What happens if old sealant might contain asbestos?
Asbestos is possible in some older mastics, particularly in buildings from before 2000. Before we disturb old sealant in an older building, we ask to see the asbestos register or survey, and if asbestos is suspected, work stops until it’s tested. Removing asbestos is a job for asbestos specialists, not us.
Do you do internal caulk as well as external mastic?
External and internal frame perimeters, caulking where it’s specified, sanitary silicone, kitchen joints and snagging before handover. The scope follows your specification.
Will you stick to the specified products?
We follow the specified sealant, and we will raise it if something in it doesn’t suit the joint. Specifications often reference BS EN 15651 or BS 6213.
Which sealant will you use?
The specification comes first, if there is one. If there isn’t one, it comes down to the joint: its movement, its surfaces and what it has to cope with.
Are you CHAS accredited?
Our applicators are CSCS-carded, and we hold CHAS accreditation and Constructionline membership. Tell us what site paperwork you need and we’ll confirm with the quote.
Also near Biggin Hill
Also in Biggin Hill
What the job involves on each surface
Snagging before handover
Snags normally come from damage by following trades, missed joints or poor earlier work. Snagging can be included or priced separately, depending on what suits the programme.
Internal decorators’ caulk
Caulking is often done in a hurry by whoever’s on site. A neat, consistent caulk line makes the decorators’ job quicker and reduces snags.
Why it’s worth doing now in Biggin Hill
Sealing over damaged or contaminated new joints might save a day, but it won’t last. Sealant can’t grip a contaminated or existing bead, and the defect comes back after handover. We cut out and redo the joint properly. Repeat call-outs disrupt occupied London buildings, so a proper job first time, with the old sealant fully removed, is worth it.
A quote for mastic packages depends on quantities, condition and access, and any specification that applies. Call for a quote.
What you get with us
- A range of standard colours, depending on the product
- Colour options checked against the specified product
- One number for every site we cover
- Clear, fixed quotes
Take a look at what affects the cost or how we’re accredited.
New build and refits around Biggin Hill
Every borough of Greater London is inside the ULEZ, and that applies to contractors’ vehicles on any job in Biggin Hill. Delivery slots and scarce storage shape how and when the mastic goes in.
Work at a hotel such as The Landing Hotel (to the north of Biggin Hill) tends to be programmed around bookings, mastic included. When units on a site such as Biggin Hill Airport Trading Estate, 0.6 miles to the north of Biggin Hill, are refurbished or reclad, the panel joints and window perimeters are part of the mastic package.
Biggin Hill is about 6 miles east of Caterham, in Greater London. We cover Biggin Hill and the rest of Greater London, with the same fixed quotes and 12-month guarantee as everywhere else. We work across 764 places in Greater London, large and small. For work in that direction, see our London page.
We take on mastic packages across the TN16 and BR6 postcode area. We cover commercial and managed buildings on Rushdene Walk, Mount Pleasant and Stock Hill. Main routes into Biggin Hill include the A233. Sites close to Biggin Hill are covered too, including Aperfield (1 mile south-east), Luxted (1 mile north-east), Berry's Green (1 mile east), Single Street (1 mile east) and Leaves Green (2 miles north). A short drive away, we cover London (14 miles north-west), Whitechapel (15 miles north), Brompton (15 miles north-west), Stockwell (13 miles north-west), Orpington (6 miles north-east) and Wimbledon (13 miles north-west).
Landmarks near Biggin Hill
We work on buildings around Charles Darwin School. The nearest railway station is Woldingham station, roughly 3.8 miles south-west of the centre. Other landmarks nearby include Warlingham Park Hospital (2.7 miles west). Open spaces near Biggin Hill include Betsom's Hill and West Kent Golf Course nature reserve.
For managing agents and facilities managers
Main contractors use us as their sealant subcontractor. Programme, specification and site rules come first.
As a CHAS accredited contractor and Constructionline member, we make supplier vetting simple. Our insurance certificate can be sent along with the quote.
Signs you need construction mastic in Biggin Hill
Wide, tapered or inconsistent gaps around frames are a common problem. Every product has limits on how wide a joint it can bridge and gaps beyond it need packing or adjusting by the frame installer. We flag them early rather than filling them with sealant that won’t last.
Common reasons buildings call us in:
- Caulk cracking where joints are moving more than expected
- Existing joints on a refurb that need cutting out and resealing
- Inconsistent sealant finishes from plot to plot
- External joints sealed in damp or cold conditions that are now failing
For contractors at a school such as Oaklands Primary Academy, sealing has to be finished before term starts.
What your quote should include
- Whether primer will be used where the manufacturer specifies it
- How long is the guarantee, and what does it include?
- How the existing material will be dealt with
- Their pre-qualification and accreditations
Our process
When we get to site, we sign in, go through any site induction and check how permits are handled. Everything around the joints gets protected before any cutting starts, with the work itself normally taking anything from a day of snagging to several weeks of plot-by-plot sealing on a phased scheme. All of Greater London is in the ULEZ, and kerbside space in Biggin Hill can be scarce. Let us know about any on-site parking or loading arrangements when you send the job details.
- We walk the site or review drawings to understand the package.
- You receive a fixed quote covering scope, products and sequence.
- Site paperwork is confirmed and our CSCS-carded applicators are inducted.
- We seal plot by plot or floor by floor in line with the programme.
- Problems we find, such as oversized gaps, are raised right away.
- Final snagging is completed and the 12-month guarantee applies.
What we need from you
- Let us know about inductions and permits
- Tell us which areas need to stay in use
- Share the asbestos register for older buildings
Request a quote
If there’s a specification, drawings or a tender package, send it with your enquiry, and we’ll price the work to it. Smaller jobs need nothing more than photographs and a few notes.
Advice
When it isn’t the sealant
Sealant solves a lot, but not everything, and we’d rather tell you before you spend money. These need a different solution:
- Specifying the product where the designer hasn’t
- Defective windows, doors or glazing units (the supplier or installer’s job)
- Frame gaps too wide for sealant, which the installer needs to correct
If you’re not sure, just phone 01277 525 020 or email the details over and we’ll give you a straight answer before you book.
What we seal
- Cladding and panel joints
- Sanitary and kitchen joints
- Internal decorators’ caulk
- Floor and skirting junctions
- Brick and block movement joints
- Window and door perimeters