Mastic Sealing in Golders Green
Mastic sealing for building owners, managing agents and housing associations in Golders Green and across Greater London. CHAS accredited and fully insured, with a 12-month guarantee.
- Damp patches beside frames
- Failed external movement joints
- Repeated reactive repairs to the same buildings
Mastic sealing for businesses in Golders Green
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
How we handle mastic sealing in Golders Green
We work for building owners, landlords with commercial or block portfolios, managing agents and housing associations. A planned, building-by-building programme often works better than reacting to each complaint and we quote and schedule each building in turn. If you have a mix of products and colours from past repairs and repeated reactive repairs to the same buildings, we can help. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, the work in Golders Green is the same: failed joints cut out, faces prepared and the right sealant laid to the right depth.
Planning mastic work on a London block means notices to residents, access to flats and agreed working areas. We work to the agent’s notice and access plan, so residents know what’s happening.
We sign every job off with a 12-month guarantee. The promise is simple: if our work fails within that year, we put it right.
- Location
- Golders Green (NW11, NW2, NW3)
- Wider area
- Greater London
- Cover
- 12 months on our workmanship
- Price
- A fixed quote before we start
- Phone
- 01277 525 020
- Updated
- 3 November 2026
Questions about Golders Green
Do you take on jobs in Golders Green where loading and access are tightly controlled?
Yes, most London buildings have access rules of some kind, and we plan around them. Say when the building is occupied and when it’s quiet, and we will plan accordingly. The ULEZ covers the whole of Greater London, which we allow for
Will you take on a block within reach of Cricklewood station?
Yes. Blocks of any size are within what we do. We work to your notice and access arrangements.
Which sealant will you use?
The specification comes first, if there is one. If there isn’t one, it comes down to the joint: how much it moves, what it bonds to and whether it’s wet, trafficked or fire-rated.
How soon can the area be used again?
Curing time varies by product, and we confirm it on the day.
Does weather matter for sealant work?
It can, when the joints are outside. Sealant won’t bond properly to a wet or frosty joint, so external work may be moved if conditions aren’t right. Internal work is far less affected.
How long does a typical visit take?
We plan the time on site around your programme and access. You’ll have an expected duration with the quote.
Can you plan resealing across several buildings?
We can. Each building is inspected, quoted and scheduled in turn starting wherever is most urgent.
For managing agents and facilities managers
FMs need a contractor who is easy to get on site. Let us know the documents you need (RAMS, insurance certificate, CSCS details) and we’ll confirm them with the quote.
Hotels, schools, healthcare sites, offices and retail units book us directly too. The work is planned around how the building runs, so guests, pupils, patients or staff are disturbed as little as possible.
Honest limits
Honesty saves time and money. New sealant won’t cure:
- Asbestos-containing sealant, which we don’t remove
- Leaks through the frame itself rather than the perimeter
- Leaks from above rather than through a joint
If in doubt, call 01277 525 020 or email the details over and we will say what we think.
Surfaces we seal
- Communal kitchens and washrooms
- Balcony and threshold joints
- External wall and movement joints
- Window and door perimeters on blocks
- Communal entrances and stairwells
- Shopfronts below residential blocks
Surface by surface
Estate-wide resealing programmes
Priority order can follow condition, complaints or your maintenance plan. Quotes can be per block or for the full programme.
External movement joints
The joint width has to suit the movement and the sealant’s capability with the width-to-depth ratio set as the manufacturer advises.
Common problems we fix in Golders Green
Much failed sealant was laid on dirty, dusty or damp surfaces. Without clean, sound faces and a primer where the product needs one, the bead peels off one side.
Typical triggers for a call:
- Draughts at frames across a block
- Movement joints with sealant missing
- Patchy repairs in mismatched sealant
- Leaks at window and door perimeters
Blocks of flats and mixed-use buildings often cluster around stations such as Cricklewood station (to the south-west of Golders Green) and their window and balcony mastic tends to age at the same rate across a building.
Before you book anyone
- Proof of insurance
- Will RAMS and insurance details be available?
- Whether primer will be used where the manufacturer specifies it
- Health and safety accreditation such as CHAS
For owners and agents in Golders Green
For a London block, the agent or landlord normally handles notices to residents and access to flats. We fit the programme to your notice periods. The 2 miles around Golders Green include five care or nursing homes. Care home owners need frame and external mastic kept sound without unsettling residents.
For a school such as Rimon Jewish Primary School, perimeter mastic on windows and doors is a holiday job. Property owners at sites such as Brent Cross Shopping Park, 1.1 miles to the west of Golders Green, can have mastic renewed between lettings.
Golders Green is about 1 mile north of West Hampstead, in Greater London. Golders Green sits inside our coverage, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. We work across 764 places in Greater London. Our London page has more on work in that area (7 miles or so).
Commercial sites across NW11, NW2 and NW3 are covered for mastic joints. If your site is on Nant Road, Hoop Lane and Park Avenue or close by, we can quote for mastic joints. We also cover Temple Fortune (1 mile north), Childs Hill (1 mile south), North End (1 mile south-east), Hampstead Garden Suburb (1 mile north-east) and Vale of Health (1 mile south-east). A short drive away, we cover London (7 miles south-east), City of Westminster (5 miles south-east), Marylebone (4 miles south-east), Kensington (5 miles south), St Pancras (5 miles south-east) and Shoreditch (6 miles south-east).
Local landmarks in Golders Green
We work on buildings around Childs Hill Park, The King Alfred School and The Old Bull and Bush pub and the streets around them. For rail, the closest station is Cricklewood station, roughly 1.2 miles south-west of the centre. A little further out are Kenwood House (1.3 miles east) and Brent Cross Shopping Centre (1.1 miles west). Open spaces near Golders Green include Parliament Hill and Darland's Lake.
Nearby places to Golders Green
What else we do in Golders Green
Why deal with it now?
Reacting to every complaint means sending someone out block by block. A planned programme treats each building once, under a single quote and a single programme. In a London building, a failed joint rarely affects only one party. Putting it right early is less disruptive than dealing with the consequences.
What a job costs comes down to the quantity of joints, how much old material needs removing and how the joints are reached. Call for a fixed quote when you’re ready.
What you get with us
- Public liability insurance in place
- Sealing commercial buildings since 2005
- 12-month guarantee on workmanship
- A Constructionline member, so easy to vet
See how commercial sealant jobs are priced or how we’re accredited.
How a job runs
Occupied buildings need a little choreography. The work area is signed and kept contained, with routes through the building left open and work section by section so the rest of the building stays in use. Most London premises stay occupied while we’re on site, so zones and timings are agreed with whoever manages the building. Phased work keeps the rest of the building in use.
- A building-by-building inspection lists the failed joints.
- You get a fixed quote, per block or for the whole programme.
- Dates and areas are agreed so occupiers can be told.
- Failed sealant is removed and the faces prepared.
- Joints are resealed and tooled.
- Each building is checked and signed off with the 12-month guarantee.
Before we start on site
- Let us know about inductions and permits
- Share your working hours and any access restrictions
- Tell staff and tenants when we’ll be in
Ask for a quote
Quotes are fixed against the scope you send, so the cost is agreed before work starts. To start the process, ring 01277 525 020 or email us.