Construction Mastic in Single Street
Planning work on a mastic package in Single Street? We assess it, carry out the work and guarantee our workmanship for 12 months.
- A long mastic snag list close to completion
- Frame perimeters left unsealed or poorly sealed
- Old sealant on a refurbishment that needs stripping before new work
Construction mastic for Single Street sites
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
Why it’s worth doing now in Single Street
Clearing snags piecemeal is tempting when handover is close. A planned sweep of each plot or floor catches the lot in one go, and avoids repeated visits. Snagging can be priced as a separate stage. Failed sealant in a building in Single Street can quickly affect neighbours, tenants or the floor below. Putting it right early is less disruptive than dealing with the consequences.
Cost follows what’s involved: removing old material, preparing the joints, the product, the access and how the work is phased. Call for a quote.
Why choose Mastic Doctor in Single Street
- Over 20 years of commercial sealing
- Failed material removed, not covered up
- Public liability insurance in place
- Colours chosen to suit frames, cladding or finishes where possible
Take a look at what affects the cost or how we’re accredited.
Construction mastic in Single Street
Buyers, tenants and clients notice sealant lines long before they notice the structure. A smeared bead round a window or a gap behind a worktop ends up on the snag list and clearing them late eats into the handover window. Our aim is joints that pass at the first inspection. If you have existing joints on a refurb that need cutting out and resealing and sealant knocked or painted over by other trades, we can put it right, whatever the surface. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: in Single Street, that means joint design, primers and backing rod as standard.
The ULEZ covers the whole of Greater London, so contractors’ vehicles on a job in Single Street must meet its standards or pay the daily charge. Add booked delivery slots and limited storage, and a London mastic package needs planning before the first bead.
Work we carry out in Greater London 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
- Single Street (TN16)
- Wider area
- Greater London
- Cover
- A 12-month guarantee
- Price
- Quoted before any work starts
- Telephone
- 01277 525 020
- Page updated
- 3 November 2026
Our process
Occupied buildings need a little choreography. The work area is signed and kept contained, with routes through the building left open and work section by section so the rest of the building stays in use. All of Greater London is in the ULEZ, and kerbside space in Single Street 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 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.
- Sealing follows the programme as areas are released.
- Any frame gaps or issues outside our scope are flagged to the site team.
- Final snagging is completed and the 12-month guarantee applies.
What we need from you
- Send asbestos survey details if the building is pre-2000
- Send your site hours and access windows
- Clear stock, furniture or equipment away from the joints
Quotes
Every job follows the same four steps: send details, get a quote, we seal, guaranteed. The first step is to give us a call on 01277 525 020 or use the quote form with what you know.
Related advice
Common questions from Single Street clients
Do you work in London buildings with loading restrictions?
Yes. Booked loading bays, goods lifts and permit-to-work systems are normal for London jobs. Share the building’s contractor rules and we’ll work to them. The ULEZ covers the whole of Greater London, which we allow for
Can you take on a job at a hospital such as Princess Royal University Hospital?
Yes, hospitals are one of the sectors we cover. We follow the site’s permits, sign-in and infection-control procedures in every area.
Will you just go over the old sealant?
No. Overlaying old sealant is a frequent cause of early failure, so everything comes out first.
How do you deal with asbestos in old sealant?
Managing asbestos is the dutyholder’s responsibility, so for older buildings we ask for the asbestos register first. Work pauses if suspect material is found, until it has been tested.
Do you guarantee new-build sealant work?
Each package is signed off with a 12-month workmanship guarantee. Damage by others after we have finished isn’t covered.
Can you fit around our working hours?
We’re in the office from 8am until 5pm, Monday to Friday. Tell us your site hours and access windows and the work will be fitted around them.
Do you install fire-rated sealant as part of a package?
Fire-rated sealing at service penetrations and linear gaps can be included where specified. Tell us what records you need and we’ll confirm with the quote.
Should maintenance staff do it?
The visible bead is only part of the job. Correct depth, the right primer and a sealant matched to the movement are easy to get wrong without experience.
Certain joints really need a specialist: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. Getting these wrong usually costs more in the end than doing them right.
When it isn’t the sealant
We check first that sealant really is the fix. It won’t put right:
- Defective windows, doors or glazing units (the supplier or installer’s job)
- Fire-stopping design or sign-off (that’s for the designer, fire engineer and building control)
- Joints damaged after sign-off by following trades
If in doubt, speak to us on 01277 525 020 or email the details over and we’ll say what we think.
What we seal
- Brick and block movement joints
- Window and door perimeters
- Sanitary and kitchen joints
- Cladding and panel joints
- Floor and skirting junctions
- Internal decorators’ caulk
What the job involves on each surface
Snagging before handover
Damaged, missed or untidy joints make up most snag lists. Snagging can be included or priced separately.
Kitchens and utility areas
Commercial kitchens often need hygienic or food-safe sealants. We follow the specification and seal to a smooth, cleanable finish.
Maintenance after handover
After handover, a little attention goes a long way:
- Release areas for mastic once other trades have finished in them
- Don’t force external sealing on a damp or frosty day
- Keep scrapers and abrasive pads off new beads
- Brief following trades on areas that have been sealed
Our 12-month guarantee covers the workmanship from sign-off. The guarantee covers how we sealed, not later damage by other trades which is why protection after sealing matters.
Sealing outside when the joint is damp or too cold leads to poor adhesion. Holding off until conditions suit avoids callbacks so external sequencing builds in some flexibility.
Facades, frames and programmes in Single Street
Every borough of Greater London is inside the ULEZ, and that applies to contractors’ vehicles on any job in Single Street. Delivery slots and scarce storage shape how and when the mastic goes in.
New wings at hospitals like Princess Royal University Hospital (to the north of Single Street) bring long runs of window and panel joints to seal. For a contractor at a hotel such as The Landing Hotel, 1.4 miles west of Single Street, the mastic often has to be finished before a reopening date. Projects at schools like Cudham Church of England Primary School work to term dates, so mastic is programmed tightly.
Single Street is about 5 miles south of Orpington, in Greater London. We cover Single Street and the rest of Greater London, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. Single Street is one of 764 places in Greater London on our list for mastic packages. Our London page has more on work in that area, about 14 miles away.
We take on mastic packages across the TN16 postcode area. We cover commercial and managed buildings on Berry's Hill and Single Street and the roads nearby. If your building is just outside Single Street, we cover Berry's Green (1 mile south), Luxted (1 mile north-west), Cudham (1 mile east), Aperfield (1 mile south-west) and Horns Green (1 mile south-east). Bigger towns within reach include London (14 miles north-west), Whitechapel (15 miles north-west), Stockwell (13 miles north-west), Orpington (5 miles north), Wimbledon (14 miles north-west) and Plaistow (14 miles north).
Landmarks near Single Street
In Single Street, that means premises near Charles Darwin School and The Old Jail Public House and the streets around them. The closest station to Single Street is Chelsfield station, roughly 3.3 miles north-east. Well-known places in the area include Princess Royal University Hospital (3.3 miles north) and Crofton Roman Villa (3.9 miles north). For a walk, there’s Betsom's Hill and Downe Bank.