Dollis Hill mastic sealing
Mastic sealing for Dollis Hill, from a contractor working since 2005. Fully insured and CHAS accredited.
- Leaks at window and door perimeters
- Window mastic that has split and shrunk
- A mix of products and colours from past repairs
Mastic sealing in Dollis Hill
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
For owners and agents in Dollis Hill
Dollis Hill has three care or nursing homes no more than 2 miles away. Frame mastic on care buildings is best renewed elevation by elevation, with the manager deciding timings. For a London block, the agent or landlord normally handles notices to residents and access to flats. Our programme follows the access you agree with residents.
Buildings close to stations like Brent Cross West station, under half a mile north-east of Dollis Hill, are often flats over shops, with frame mastic to keep sound. Property owners at sites such as Brent Cross Shopping Park (0.7 miles north-east of Dollis Hill) can have mastic renewed between lettings.
Dollis Hill is about 1 mile north-east of Neasden, in Greater London. Commercial clients in Dollis Hill can call on us for mastic joints. Dollis Hill is one of 764 places we cover in Greater London for mastic joints. Our London page has more on work in that area (7 miles or so).
We take on mastic joints across the NW2, NW10 and NW9 postcode area, whatever the building. Among the streets we cover are Brook Road, Lane Close and Crest Road, and sites on any of them can send details for a fixed quote. If your building is just outside Dollis Hill, we cover Staples Corner (1 mile north-east), Neasden (1 mile south-west), Cricklewood (1 mile south-east), Willesden (1 mile south) and Brent Cross (1 mile north-east). Further afield, our area takes in London (7 miles south-east), City of Westminster (5 miles south-east), Marylebone (5 miles south-east), Kensington (5 miles south), St Pancras (6 miles south-east) and Shoreditch (7 miles east).
What’s near Dollis Hill
Around Dollis Hill, our work takes us to commercial buildings near Woodfield School, The Crown Public House and Gladstone Park and the streets around them. There’s a railway station in Dollis Hill itself: Brent Cross West station. Well-known places in the area include Brent Cross Shopping Centre (1 mile north-east) and St Andrew's Hospital (less than half a mile south). The countryside around Dollis Hill includes Darland's Lake and Parliament Hill.
Mastic sealing in Dollis Hill, done properly
We work for building owners, landlords with commercial or block portfolios, managing agents and housing associations. Many prefer a planned programme to one-off visits, with each block quoted and scheduled in turn. Site teams most often ask us about movement joints with sealant missing and no planned programme for sealant, across balcony and threshold joints, window and door perimeters on blocks and communal entrances and stairwells. A specialist sealant contractor works differently from a general builder: on jobs in Dollis Hill, preparation and product choice get the time they need.
London’s ULEZ covers every borough, and parking and loading rules vary street by street. For block-wide work, a place to park and store materials saves time on every visit.
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 spell out the cover before we begin.
- Location
- Dollis Hill (NW2, NW10, NW9)
- Region
- Greater London
- Guarantee
- 12 months on our workmanship
- Quote
- Fixed quote, scope in writing
- Phone
- 01277 525 020
- Page updated
- 3 November 2026
Cost factors for mastic joints
The price varies from site to site. Expect it to depend on:
- Location, for remote and island sites
- Working within restricted access windows
- The product specified
- The site’s rules and procedures
The product called for affects the cost, and so does the preparation. Access, phasing and site rules also count.
Details that help us quote
Good information means a firmer quote. Helpful details to send:
- Any dates the work must fit around
- Rough lengths or quantities, or drawings if you have them
- Where the site is, with the postcode
- 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 photographs and a few notes.
Aftercare for building managers
Your facilities or cleaning team can help the joints last. Share these points with them:
- Check the asbestos register before any old mastic is disturbed
- Share your contractor requirements early
- Track which buildings were done and when
- Encourage occupiers to report problems at frames
Ask residents or tenants to report draughts or leaks round windows early. A quick report keeps a small repair small.
Planned resealing is easier to budget than emergency repairs. A programme can start with the worst buildings so spending is spread.
Your questions answered
Will you take on a block within reach of Brent Cross West station?
Yes. Managing agents, landlords, property factors and housing associations are who this service is for. Give us the building’s details and say how residents are notified, and we will quote and plan to suit.
Can you cope with the access rules in a London building?
Yes. Inductions, permits and timed loading are routine for us in London. Share the building’s contractor rules and we’ll work to them. All of Greater London is inside the ULEZ, and our planning allows for it
What guarantee do you give on resealing?
Every building we reseal has a 12-month guarantee. It covers our workmanship, not later building movement, damage or frame failures.
Who decides which product is used?
The specification comes first, if there is one. Without one, the joint decides: how much it moves, what it bonds to and whether it’s wet, trafficked or fire-rated.
Can you seal joints high up on a block?
Every block is different. How upper joints are reached is agreed before work is booked so there are no surprises.
How many days will you need on site?
It depends on the scope, but the work normally takes a few days for most blocks, with larger programmes scheduled building by building. For bigger or phased jobs, we will set out a timescale with the quote.
Can you send RAMS and CSCS details before starting?
Let us know your requirements: tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we will confirm with the quote. We hold CHAS accreditation and Constructionline membership.
Towns and villages near Dollis Hill
Other services in Dollis Hill
Common problems we fix in Dollis Hill
Poor preparation explains many failed joints. Without clean, sound faces and a primer where the product needs one it comes away from one face.
Typical triggers for a call:
- A mix of products and colours from past repairs
- Damaged joints in communal entrances and corridors
- Cracked, hardened mastic round windows on a block
- Draughts at frames across a block
Owners of student blocks near Middlesex University (2.2 miles north of Dollis Hill) can schedule frame and external mastic for the summer vacation.
Questions to ask before you book
- How joint depth will be controlled
- Their plan for phasing and protecting the area
- Will RAMS and insurance details be available?
- Will failed sealant be removed rather than covered?
What we can’t put right
A proper diagnosis includes knowing what sealant can’t do. You’ll hear from us if the cause turns out to be one of these:
- Glazing that needs replacing
- Roof leaks, gutters or failed flashings that aren’t sealant joints
- Materials that need asbestos testing before work
If in doubt, call the office on 01277 525 020 or email us and we’ll say what we think before you book.
Surfaces we seal
- Communal kitchens and washrooms
- Window and door perimeters on blocks
- Balcony and threshold joints
- External wall and movement joints
- Communal entrances and stairwells
- Shopfronts below residential blocks
For managing agents and facilities managers
As a CHAS accredited contractor and Constructionline member, we make supplier vetting simple. Our insurance certificate can be sent along with the quote.
Main contractors use us as their sealant subcontractor on new-build and refurbishment projects. Programme, specification and site rules come first.
Our process
When we get to site, we sign in, go through any site induction and check how permits are handled. Everything around the joints gets protected before any cutting starts, and the work usually takes one or more days per building, depending on the joint lengths and the access. In Dollis Hill, most buildings stay in use during the work, so we agree zones and timings with the building or facilities manager. Areas are handed back as each section is finished.
- We check the asbestos register for older buildings and look at the joints.
- The products and programme are set out in a fixed quote.
- Failed mastic is removed completely.
- The joints are prepared and resealed with the right product.
- We finish each building before moving to the next.
Before we start on site
- Share the asbestos register for older buildings
- Tell us your opening times and when work is allowed
- Point out any areas we must not close
Quotes
Photos, drawings or a schedule of the joints and a fixed quote comes back to you. If the job needs a look first, we’ll arrange a site visit.