Construction and new-build mastic in Greenwich, Greater London
Need construction mastic in Greenwich? Send us the details for a fixed quote, backed by a 12-month guarantee on the work.
- Window and door perimeters that won’t pass inspection
- New external sealant already peeling away
- Frame gaps too wide for sealant alone
Construction mastic for businesses in Greenwich
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Construction mastic in Greenwich
We work to the specification and the programme. Where the specification names a product, we use it, and if an alternative is proposed, it goes to you for acceptance first. Backing, primer and depth follow what the sealant maker sets out so the detail on the drawing is what ends up on site. If you have existing joints on a refurb that need cutting out and resealing and caulk cracking where joints are moving more than expected, we can help, on floor and skirting junctions, brick and block movement joints and cladding and panel joints alike. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, in Greenwich it comes down to the same thing: the right product in a properly prepared joint.
Around Greenwich, as across London, much of the work is refurbishing existing buildings as well as building new ones. New frames, overcladding and fit-outs all end in perimeter and facade joints, frequently with occupants close by.
Our workmanship is guaranteed for 12 months, wherever the site is. If our installation lets you down in that time, we return and fix it.
- Location
- Greenwich (SE10, SE3, SE8)
- Region
- Greater London
- Guarantee
- 12 months on our workmanship
- Quotes
- Quoted before any work starts
- Call
- 01277 525 020
- Page updated
- 3 November 2026
FAQs: Greenwich
Will you take on work at estates like Greenwich Centre Business Park, close to Greenwich?
Yes. Our area takes in Greenwich and its surroundings, with estates and business parks such as Greenwich Centre Business Park included. To start, just speak to us on 01277 525 020 or use the quote form with the unit, the joints involved and your access times.
Can you work on a hospital site such as Blackheath Hospital?
Yes. We work in healthcare settings as well as offices and schools. Each area is agreed with the ward or department and the estates team in advance.
How do you choose the sealant?
If the job is specified, we follow the specification. Otherwise, we recommend a product to suit the joint’s movement, the substrate and the conditions, following the manufacturer’s guidance.
How long does a job like this take?
That varies with the scale of the job, but the work normally takes a few days on a modest refurbishment and longer on multi-plot or multi-storey schemes. Larger or phased jobs take longer, and we’ll give you a timescale with the quote.
What if there’s asbestos in the old mastic?
The duty to manage asbestos sits with the building’s dutyholder, so for older buildings we ask for the asbestos register first. If anything suspect turns up, we stop until it’s tested.
Can you clear a mastic snag list before handover?
Yes. Damaged, missed or untidy joints are stripped and done again properly, working to your handover date.
When can the area be used after sealing?
That comes down to the sealant and the temperature. Some products skin over quickly but need longer to cure fully, and we confirm it before leaving site.
Mastic packages on Greenwich sites
The ULEZ covers the whole of Greater London, Greenwich included, so site vehicles need to meet its standards or pay the daily charge. 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 Greenwich. When hotels extend or refit, the work is usually squeezed between peak periods, mastic included.
Recladding or extending a unit at a site like Greenwich Centre Business Park (to the west of Greenwich) brings panel joints and frame perimeters into the programme. On a healthcare site such as Blackheath Hospital (1.2 miles south of Greenwich), new blocks and refurbishments go on while the hospital keeps running, so mastic work is sequenced carefully.
Greenwich is about 4 miles east of London, in Greater London. Our applicators travel to Greenwich for work on mastic packages, handled exactly as we handle every other area. 764 places across Greater London fall within our area, including Greenwich.
Postcode districts covered here: SE10, SE3 and SE8 for mastic packages. For a building on Cade Road, Webb Road and Creek Road or nearby, we can quote for mastic packages. You will find Greenwich on or near the A2203 and A2211. Nearby places we also cover include Maze Hill (1 mile north-east), Vanbrugh Park Estate (1 mile east), Blackheath (1 mile south-east), Westcombe Park (1 mile east) and Isle of Dogs (1 mile north-west) for mastic packages. A short drive away, we cover London (4 miles west), City of Westminster (7 miles west), Marylebone (7 miles west), Kensington (9 miles west), St Pancras (6 miles north-west) and Shoreditch (5 miles north-west).
Local landmarks in Greenwich
Locally, jobs take us to sites close to The Plume of Feathers pub, John Roan School and Royal School of Naval Architecture and Marine Engineering, among other places. Also close by are Island Gardens (0.6 miles north-west) and St. Paul's (1.1 miles west). Greenwich has its own railway station: Maze Hill station. A little further out are Greenwich Castle (less than half a mile south-west) and Greenwich District Hospital (0.5 miles north-east). Green spaces nearby include Tower Hill and Creekside Discovery Centre.
Looking after the joints
For the best life from the joints:
- Bring the mastic contractor in after the last trades are through
- Put any product change through the designer first
- Share drawings and the specification as soon as possible
- Record the products used in the O&M file
At handover, keep the product details with the O&M information. Future maintenance is easier when the products are known, and tells you what to reseal with. Tell us what records you need and we will confirm with the quote.
Sanitary joints that fail early become defects soon after occupation. Leaks behind showers and basins damage finishes and floors. Proper preparation, with the right silicone first time, keeps it off the defects list.
How a job runs
The first thing on site is a walk round with your contact, 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 Greenwich 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.
- A fixed quote sets out scope, products and phasing.
- 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.
- Any frame gaps or issues outside our scope are flagged to the site team.
- Final snagging is completed and the 12-month guarantee applies.
Getting the site ready
- Share your working hours and any access restrictions
- Point out parking and an unloading spot
- Clear stock, furniture or equipment away from the joints
Request a quote
If there’s a specification, drawings or a tender package, send it with your enquiry, and we’ll price against exactly what is specified. Smaller jobs need nothing more than photos and a few notes.
Related advice
Signs you need construction mastic in Greenwich
Frames installed with uneven gaps make perimeter sealing harder. Every product has limits on how wide a joint it can bridge. Better to raise it at the start than seal a joint that’s bound to fail.
Site and facilities staff are often the first to spot these:
- A mastic package split between trades with no clear owner
- Missed perimeter joints on a new elevation
- Caulk cracking where joints are moving more than expected
- Existing joints on a refurb that need cutting out and resealing
Hotel extensions and refits, at places such as King William Hotel, under half a mile north-east of Greenwich, normally run between busy periods, so the sealing is squeezed into short windows.
What your quote should include
- Whether old or failed sealant will be cut out, not overlaid
- How they handle RAMS and site documents
- Their approach to joint depth and backing
- Their public liability cover
Places near Greenwich
Other services in Greenwich
Owners, agents and contractors
Whether you’re a managing agent, a property factor or an owner’s representative: send the details, accept a fixed quote, and we carry out and guarantee the work. We can agree access arrangements and keyholder contacts beforehand.
We work for building owners and managing agents on sealant work across single buildings or whole portfolios. One quote can cover more than one site, which keeps the paperwork simple.
Honest limits
Part of a good diagnosis is knowing where sealant stops. We will tell you if the real problem is one of these:
- Deciding which fire-stopping product a penetration needs
- Specifying the product where the designer hasn’t
- Rework caused by others damaging completed areas
If you’re not sure, just phone 01277 525 020 or email drawings and photos and we will give you a straight answer.
What we seal
- Internal decorators’ caulk
- Cladding and panel joints
- Brick and block movement joints
- Window and door perimeters
- Floor and skirting junctions
- Sanitary and kitchen joints
General trades versus a specialist
There’s also the paperwork. Many sites expect CSCS cards, RAMS and proof of insurance, and our CSCS-carded applicators are used to working under those rules.
General builders and handymen seal joints, but it isn’t their main trade. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint.