Construction and new-build mastic in Hither Green, Greater London
Mastic packages for new-build and refurbishment projects throughout Hither Green and nearby, carried out by CSCS-carded applicators. Fully insured and CHAS accredited.
- Bath and shower joints scraped during the final clean
- Existing joints on a refurb that need cutting out and resealing
- A mastic package split between trades with no clear owner
Need construction mastic in Hither Green?
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Construction mastic in Hither Green
Refurbishment work needs a slightly different approach from new build. Existing joints have to be stripped back to sound faces, because fresh sealant can’t key into cured silicone and the asbestos survey is checked first on older stock. New and existing joints then get the same preparation. We work on brick and block movement joints, window and door perimeters and sanitary and kitchen joints, and the failures we’re asked to look at most are oversized or tapered gaps around new frames and different trades sealing to different standards. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: in Hither Green, that means joint design, primers and backing rod as standard.
A great deal of London construction is refurbishment of occupied or part-occupied buildings, alongside new blocks. Replacement windows, recladding and fit-outs leave perimeter and facade joints to seal, often next to people still using the building, so tidy, well-planned work matters.
The 12-month guarantee is for workmanship rather than wear and tear. How long a sealant joint lasts depends on movement, exposure, cleaning and use, so we’re clear about what is covered before work starts.
- Where
- Hither Green (SE13, SE12, SE6)
- Wider area
- Greater London
- Cover
- A 12-month guarantee
- Price
- Fixed quote, scope in writing
- Telephone
- 01277 525 020
- Page updated
- 3 November 2026
Doing it in-house
For a quick touch-up, site staff may be fine, but anything bigger is another matter: a specialist brings efficiency, a consistent finish and a 12-month guarantee.
For most general trades, sealant is a sideline. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint, which is what makes a joint last.
What else we do in Hither Green
Mastic packages on Hither Green sites
Site traffic in Hither Green 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. There are a good number of hotels within about 2 miles of Hither Green. Hotel schemes tend to have fixed reopening dates, so the mastic is programmed tightly with the other trades.
On a campus such as University of Greenwich - Greenwich Campus, 2.1 miles north of Hither Green, new teaching buildings and residences are normally built and refurbished around the academic year. On a healthcare site such as University Hospital Lewisham, 0.8 miles west of Hither Green, new blocks and refurbishments go on while the hospital keeps running, so mastic work is sequenced carefully.
Hither Green is about 2 miles south-east of New Cross, in Greater London. Across the SE13 postcode area, it works the same way: details in, fixed quote out, then sealing and a 12-month guarantee. Across Greater London, 764 places are covered, including Hither Green.
Business premises anywhere in SE13, SE12 and SE6 are within our area. If your site is on Old Road, Manor Lane and Pascoe Road or close by, send details and we will quote for mastic packages. Just outside Hither Green, we also work in Lee (1 mile east), Ladywell (1 mile west), Lewisham (1 mile north-west), Catford (1 mile south-west) and Horn Park (1 mile east). Bigger towns within reach include London (5 miles north-west), City of Westminster (8 miles north-west), Marylebone (8 miles north-west), Kensington (9 miles west), St Pancras (7 miles north-west) and Shoreditch (6 miles north-west).
Around Hither Green
Around Hither Green, our work takes us to commercial buildings near International Academy of Greenwich, The Edmund Halley pub and Manor House Gardens and the streets around them. Hither Green has its own railway station: Hither Green station. A little further out are Lewisham Shopping Centre (0.9 miles north-west) and University Hospital Lewisham (0.7 miles west). For a walk, there’s Brookmill Road Local Nature Reserve and Summer Hill.
What happens if it’s left?
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. Getting scaffold, permits or access booked in Hither Green takes effort, so while access is arranged it pays to renew all failing joints, not just the worst.
A quote for mastic packages depends on how many there are, their condition and the access, and any specification that applies. Call for a quote.
Why appoint us
- Old sealant cut out, never sealed over
- Public liability insurance in place
- CSCS-carded applicators
- Standard and matched colours in many product ranges
See how commercial sealant jobs are priced or how we’re accredited.
Common problems we fix in Hither Green
On construction sites, joints usually fail early because of when they were sealed, not what was used. Sealing before decorators, flooring or other trades have finished leaves joints exposed to damage, and the joint has to be redone.
Any of the following is a good reason to get the joints checked over:
- Window and door perimeters that won’t pass inspection
- Early adhesion failures on new external joints
- Cracks opening in caulked internal joints
- Sanitary sealant damaged by following trades
New units and refits on sites such as Chiltonian Industrial Estate (less than half a mile south-east of Hither Green) need their panel and perimeter joints sealed to the specification.
Questions to ask before you book
- The terms of the workmanship guarantee
- Whether old or failed sealant will be cut out, not overlaid
- Do they follow the manufacturer’s priming guidance?
- Their public liability cover
What the job involves on each surface
Snagging before handover
Snags typically 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.
Fire-rated sealant where specified
Fire-rated sealant forms part of some packages, installed to the product’s tested detail where it is specified. The design and sign-off of fire stopping sit with the designer, principal designer or fire engineer; we work to the specification and the manufacturer’s installation guidance.
How the quote is worked out
These are the things that shape the price:
- Travel to remote or island sites
- The site’s rules and procedures
- Joint width, depth and condition
- Which sealant the job calls for
Larger quantities, tricky access or phasing all shape the price. Site requirements like inductions and permits play a part as well, along with the time of year for external work.
Details that help us quote
The more we know, the firmer the quote. When you get in touch, include:
- Asbestos survey details if the building is older
- Approximate linear metres or a joint schedule
- Anything awkward about access or site hours
- Whether the building will be occupied during the work
Every job follows the same four steps: send details, get a quote, we seal, guaranteed. To take the first step, phone 01277 525 020 or email a schedule or drawings.
How a job runs
Inspect, seal, sign off: every visit follows that pattern. First comes an inspection and agreement on scope, then we prepare and seal each joint with the specified product, and the job ends with a walk round and sign-off. For a job in Hither Green, access comes first: booked loading, goods lifts, the building’s permit system and a spot to keep materials. Give us the hours we can be on site and we will schedule to suit.
- We price from the drawings, specification and programme you send.
- You receive a fixed quote listing scope, products and phasing.
- Any site paperwork you need (RAMS, insurance certificate, CSCS details) is confirmed with the quote.
- We seal each plot or floor as it’s released to us.
- Each joint is prepared, backed to depth and sealed in the product the specification names.
- We close out snagging and hand over with a 12-month guarantee.
Preparing the site
- Let building users know which areas are affected
- Tell us which areas need to stay in use
- Tell us your opening times and when work is allowed
Get a fixed quote
A good quote starts with a clear picture: the joints involved, quantities, access and the product called for. Share whatever details you have and we will fill any gaps with a visit.
Related advice
Questions we are asked in Hither Green
Will you take on work at estates like Chiltonian Industrial Estate, close to Hither Green?
Yes, sites like Chiltonian Industrial Estate are within our area, along with the rest of Hither Green. A few photographs and the unit address let us price the work.
Is a hospital such as University Hospital Lewisham somewhere you can work?
Yes, healthcare and care buildings are part of our work. The estates team’s permit system and infection-control rules come first, and the work is planned around them.
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.
Can weather delay the job?
For external joints, yes. Sealant needs a dry joint and a temperature within the product’s range, so damp, frosty or very cold days can stop external work. Inside work is seldom held up.
Will you quote for a small job?
Single areas, one-off repairs and whole buildings are all quoted the same way: send details, get a fixed quote, we seal, guaranteed.
Can you clear a mastic snag list before handover?
Yes. Snag-only work is something we take on, cutting out damaged or poor joints and resealing them.
Do you need to see the site first?
Photos, drawings or a schedule are often enough to quote. If the job needs a look first, we will arrange a visit.