Mastic sealing for building owners and managing agents in West Hendon, Greater London
Our CSCS-carded applicators take on mastic sealing for building owners, managing agents and housing associations in West Hendon and the surrounding area. Send details for a fixed quote.
- Water getting in round frames after rain
- Patchy repairs in mismatched sealant
- Cracked, hardened mastic round windows on a block
Mastic sealing for West Hendon sites
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
How a job runs
Occupied buildings need a little choreography. The work area is signed and kept contained, keep walkways clear and work section by section so the rest of the building stays in use. For a job in West Hendon, access comes first: booked loading, goods lifts, the building’s permit system and a spot to keep materials. Send the building rules and access times with your enquiry.
- First comes a look at the joints and, for older buildings, the asbestos records.
- A fixed quote covers the joints, products and order of work.
- We strip out the old sealant.
- The joints are prepared and resealed with the right product.
- We finish each building before moving to the next.
What we need from you
- Have the specification and drawings to hand
- Arrange parking or a loading space
- Flag any permit to work we’ll need
Request a quote
Quotes are fixed against the scope you send, so you know the figure before anyone is on site. To ask for one, speak to us on 01277 525 020 or email the details over.
Advice
How we handle mastic sealing in West Hendon
Older blocks and commercial buildings can have mastic that contains asbestos. We check the asbestos register or survey before any old sealant is cut out and if it’s suspected, work stops until it’s tested. We don’t remove asbestos-containing materials. The enquiries we see most involve estate-wide sealant that is simply worn out and complaints coming in block by block, on external wall and movement joints, shopfronts below residential blocks and communal kitchens and washrooms. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: in West Hendon, that means joint design, primers and backing rod as standard.
Planning mastic work on a London block means notices to residents, access to flats and agreed working areas. Work is planned with the agent so residents get notice and access is arranged in advance.
Every job is signed off with a 12-month guarantee. It’s a plain promise: if our work fails within that year, we put it right.
- Place
- West Hendon (NW9, NW4)
- Region
- Greater London
- Guarantee
- 12 months on our workmanship
- Quotes
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Updated
- 3 November 2026
Commercial clients in West Hendon
CHAS accredited and a Constructionline member, we are straightforward to vet for your supplier list. We are fully insured, and our insurance certificate can go with the quote.
When you manage a building on behalf of an owner, clear figures and clear communication matter. You get a fixed quote, an agreed scope and a walk round at the end.
Common questions from West Hendon clients
Can you work at a site such as Silk Bridge Retail Park, by West Hendon?
Yes. Our area takes in West Hendon and its surroundings, with estates and business parks such as Silk Bridge Retail Park included. A few photographs and the unit address let us price the work.
Do you work in occupied care homes around West Hendon?
Yes. We work around residents’ routines, a room or two at a time. Tell us about any infection-control or safeguarding requirements and we will work to them.
How do I request a quote?
The quote form is the simplest route, though you can also call 01277 525 020 or use the quote form. Photos, drawings or a joint schedule help us quote quickly.
How long before the joints can be used?
Curing time varies by product, and we confirm it on the day.
Can you seal joints high up on a block?
Access is discussed and agreed before the quote is fixed. Tell us the building height and any access already in place, and we’ll tell you how we’d approach it.
Do you seal on top of existing sealant?
No. Sealing over old material is one of the classic causes of early joint failure, so everything comes out first.
How long will the new sealant last?
It depends on movement, UV and weather, cleaning, traffic and the product. Sealant joints are maintenance items, so inspect them regularly.
For owners and agents in West Hendon
Three care or nursing homes sit less than 2 miles from West Hendon. Owners of care premises can bring window and door mastic into a phased programme planned around the home. In London, mastic work on a block goes through the managing agent or landlord, with notice to residents. We plan around the notices and access you arrange.
Owners of student blocks near Middlesex University (1 mile north of West Hendon) can schedule frame and external mastic for the summer vacation. Property owners at sites such as Silk Bridge Retail Park, less than half a mile to the south-east of West Hendon, can have mastic renewed between lettings.
West Hendon is about 2 miles north of Neasden, in Greater London. Any commercial site in West Hendon is covered, whether it’s a single job or part of a planned programme. 764 places across Greater London fall within our area, West Hendon among them. Our London page has more on work in that area (9 miles or so).
We take on mastic joints across the NW9 and NW4 postcode area, whatever the building. If your site is on Alpini Road, Catkin Road and Garrick Road or close by, we can quote for mastic joints. With the A5 nearby, West Hendon is straightforward for us to reach. Sites close to West Hendon are covered too, including The Hyde (1 mile south), Colindale (1 mile north), The Burroughs (1 mile north-east), Hendon (1 mile east) and Staples Corner (1 mile south-east). Bigger towns within reach include London (9 miles south-east), City of Westminster (6 miles south-east), Marylebone (6 miles south-east), Kensington (6 miles south), St Pancras (7 miles south-east) and Shoreditch (8 miles south-east).
Landmarks near West Hendon
Around West Hendon, our work takes us to commercial buildings near Woodfield School, Moon Under Water pub and Brampton College and the streets around them. West Hendon has its own railway station: Hendon station. A little further out are Brent Cross Shopping Centre (1.1 miles east) and Church Farmhouse Museum (1 mile north-east). The countryside around West Hendon includes Masons Field and Parliament Hill.
After the work
A few simple habits keep the new joints working:
- Group repairs into a planned programme
- Share your contractor requirements early
- Have the asbestos survey to hand for older buildings
- Track which buildings were done and when
If a joint we sealed fails within 12 months, tell us and we will look at it. Beyond that, routine checks spot the next round of repairs.
The longer failed joints are left, the more likely the substrate edges break up. Then the edges may need repairing first.
What we can’t put right
Sealant solves a lot, but not everything, and we’re upfront when that’s the case. It won’t fix:
- Water coming in from the roof or rainwater goods
- Failed window or door frames, which need a window contractor
- Misted or failed double-glazed units
If in doubt, call the office on 01277 525 020 or email drawings and photos and we will say what we think before you book.
Surfaces we seal
- Balcony and threshold joints
- Communal entrances and stairwells
- Window and door perimeters on blocks
- External wall and movement joints
- Communal kitchens and washrooms
- Shopfronts below residential blocks
Towns and villages near West Hendon
What else we do in West Hendon
Quoting for work in West Hendon
Sealant work doesn’t have a standard rate, since sites vary so much. What we look at:
- Specialist products, such as fire-rated or hygienic sealants
- Quantities, in metres or numbers
- Travel to remote or island sites
- How much existing material needs removing
No two sites price the same: joint size, product, access and site hours all play a part. A fixed quote follows once we understand the job.
What we need to price the job
It doesn’t need to be a full survey. These details are enough to start:
- Specification clauses that apply
- The postcode of the building
- The type of building and who uses it
- How the joints are reached, and at what height
Specifications, drawings and tender packages are welcome with any enquiry, and we’ll price the work to it. Smaller jobs need nothing more than photos and a few notes.
When to call us in West Hendon
In communal areas, joints take knocks from bins, bikes, buggies and deliveries, with joints near the floor and around doors suffering most. Cleaning products add to the wear.
Look out for the following:
- Water getting in round frames after rain
- Cracked, hardened mastic round windows on a block
- Estate-wide sealant that is simply worn out
- A mix of products and colours from past repairs
For a school such as The Hyde School, perimeter mastic on windows and doors is a holiday job.
Questions to ask before you book
- Are they CHAS accredited or on Constructionline?
- Is depth set with backing rod, or bond-breaker tape in shallow joints?
- What site paperwork they can supply
- Which product they’ll use, and why it suits the joint