Construction and new-build mastic in West Hampstead, Greater London
Construction mastic for West Hampstead, from a contractor working since 2005. Fully insured, with a 12-month guarantee.
- Caulk cracking where joints are moving more than expected
- Failed sealant in an existing building being refurbished
- New external sealant already peeling away
Construction mastic near West Hampstead
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
How we handle construction mastic in West Hampstead
Site managers want applicators who turn up with the right cards and paperwork. Our applicators are CSCS-carded, and we are CHAS accredited and a Constructionline member, and we are fully insured. RAMS, an insurance certificate and CSCS details can be confirmed with the quote if you tell us what you need. The enquiries we see most involve window and door perimeters that won’t pass inspection and inconsistent sealant finishes from plot to plot, on cladding and panel joints, brick and block movement joints and window and door perimeters. Most enquiries from West Hampstead start with one failed joint and grow into a wider look at the building: we check the joints around it and give you an honest view of what needs doing now and what can wait.
Every London site, West Hampstead included, is inside the ULEZ, which applies to deliveries and contractors’ vans alike. Add booked delivery slots and limited storage, and a London mastic package needs planning before the first bead.
We sign every job off with a 12-month guarantee. It’s a plain promise: if our work fails within that year, we put it right.
- Location
- West Hampstead (NW3, NW6, NW2)
- Wider area
- Greater London
- Cover
- 12 months on our workmanship
- Quote
- Fixed quote, scope in writing
- Phone
- 01277 525 020
- Updated
- 3 November 2026
Questions about West Hampstead
Can work at a site such as Regent's University London fit around teaching?
Yes. We plan campus work around teaching, exams and residence turnarounds. Tell us which site documents you need, such as RAMS, our insurance certificate or CSCS details, and they’re confirmed with the quote.
Is a hospital such as Royal Free Hospital somewhere you can work?
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.
Can one quote cover more than one building?
Yes. Multi-site work and planned programmes are a core part of the service, with each site phased to suit its occupants.
What will the job cost?
That depends on the job: quantities, access, the product and any phasing. Call for a quote.
Can you send site paperwork?
Each site asks for different documents, so tell us what you need and we’ll confirm it when we quote.
How long does a typical visit take?
It depends on the scope, though a typical visit normally takes a few days on a modest refurbishment and longer on multi-plot or multi-storey schemes. For bigger or phased jobs, we’ll set out a timescale with the quote.
Are you CHAS accredited?
We are CHAS accredited and a Constructionline member, and our applicators hold CSCS cards. Public liability insurance is in place.
Building and refurbishing in West Hampstead
There are a good number of hotels within about 2 miles of West Hampstead. Hotel extensions and refits typically have to fit around bookings, so mastic dates are tight. The ULEZ covers the whole of Greater London, West Hampstead included, so site vehicles need to meet its standards or pay the daily charge. Add booked deliveries and tight storage, and the mastic package needs planning with the site team.
For a contractor working at a hospital such as Royal Free Hospital, 1 mile to the east of West Hampstead, perimeter and facade sealing is planned around patients and deliveries. Recladding or extending a unit at a site like The Quadrant Business Centre, 1.3 miles to the south-west of West Hampstead, brings panel joints and frame perimeters into the programme.
West Hampstead is about 3 miles north-west of City of Westminster, in Greater London. We cover West Hampstead, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. 764 places across Greater London fall within our area, West Hampstead among them. Our London page has more on work in that area.
Work on mastic packages is covered throughout NW3, NW6 and NW2, whatever the building. For a building on Mill Lane, Acol Road and Ajax Road or nearby, send details and we will quote for mastic packages. Main routes into West Hampstead include the A502, which helps when planning parking and deliveries for the job. We also cover Fortune Green (1 mile west), Hampstead (1 mile east), Greenhill (1 mile east), Childs Hill (1 mile north-west) and Vale of Health (1 mile north-east) for mastic packages. Nearby towns on our patch include London (6 miles south-east), City of Westminster (3 miles south-east), Marylebone (3 miles south-east), Kensington (4 miles south), St Pancras (4 miles south-east) and Shoreditch (5 miles east).
What’s near West Hampstead
Recent enquiries here include premises near South Hampstead High School, Holly Bush pub and Kilburn Grange Park. There’s a railway station in West Hampstead itself: Finchley Road & Frognal station. A little further out are Isokon Gallery (1.2 miles east) and New End Hospital (0.5 miles north-east). Not far away are Parliament Hill and Westbere Copse.
Do you need construction mastic in West Hampstead?
Dust is the enemy of adhesion on a construction site. Dust, film adhesive, damp and grease on the joint faces prevent a proper bond so faces get cleaned, and primer goes on wherever the maker specifies, even on new work.
Typical triggers for a call:
- Perimeter gaps outside the sealant’s range
- Sealant knocked or painted over by other trades
- New external sealant already peeling away
- Caulk cracking where joints are moving more than expected
For a contractor at a hotel such as Quality Hotel Hampstead, 0.5 miles south-east of West Hampstead, the mastic often has to be finished before a reopening date.
Questions to ask before you book
- How the existing material will be dealt with
- Will RAMS and insurance details be available?
- Their plan for phasing and protecting the area
- Health and safety accreditation such as CHAS
Cost factors for mastic packages
What shapes the price:
- Quantities, in metres or numbers
- Phasing around occupants
- The product specified
- Induction, permit and paperwork requirements
We don’t publish prices, since every building and every scope is different. For a fixed figure, call for a quote and we’ll price your job on its own details.
Sending details for a quote
To price the job accurately, we need a clear picture of the site. Useful things to include:
- Whether the building will be occupied during the work
- Clear photos of the problem areas
- The product your specification calls for
- Any dates the work must fit around
Tell us about the building, the joints and when you need the work done, and a fixed quote will follow. To get it moving, give us a call on 01277 525 020 or email a schedule or drawings.
Site staff or a sealant specialist?
The visible bead is only part of the job. Backing rod, primer where specified and a joint designed to move with the building are where general trades tend to cut corners.
Paperwork matters too. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and our CSCS-carded applicators are used to working under those rules.
Maintenance after handover
Regular inspection catches problems early. Specifically:
- Keep product details for future maintenance
- Bring the mastic contractor in after the last trades are through
- Brief following trades on areas that have been sealed
- Put any product change through the designer first
If a joint is damaged after sealing, flag it early. We can return to clear snags before handover as agreed in the quote.
Sanitary joints that fail early become defects soon after occupation. Leaks behind showers and basins damage finishes and floors. Getting the product and preparation right first time avoids that.
Why deal with it now?
Leaving mastic to whichever trade is fitting the element can look cheaper on paper. In practice it often means different standards, gaps in responsibility and snags nobody owns. 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.
Small jobs and large programmes are priced from the same things: scope, access, product and programme. Call for a quote and we will put a fixed figure on it.
What you get with us
- Fully insured
- Work carried out by CSCS-carded applicators
- RAL and finish matching where the product range allows
- Commercial sealant work since 2005
Read how commercial sealant jobs are priced or our accreditations and insurance.
Towns and villages near West Hampstead
What else we do in West Hampstead
On site: what to expect
We bring the products specified for the job, along with primers and backing rod. Any old material is cut back to clean, sound faces, the manufacturer’s primer is applied where it’s called for, and the sealant is tooled off neatly. Planning a London job such as one in West Hampstead starts with access. Give us the hours we can be on site and we will schedule to suit.
- Drawings, specification and programme come to us.
- Quantities are measured and a fixed price returned.
- The sequence is agreed with the site manager.
- Each area is sealed when it’s released.
- Joints are prepared, backed and sealed to the specification.
- Snags are cleared and the package signed off with our 12-month guarantee.
Getting the site ready
- Share your working hours and any access restrictions
- Make sure the joints can be reached
- Confirm the product named in the specification
Quotes
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, speak to us on 01277 525 020 or email a schedule or drawings.