Swiss Cottage mastic sealing
Looking for mastic sealing in Swiss Cottage? It’s simple: send details, get a quote, we seal, guaranteed.
- Window mastic that has split and shrunk
- Open joints in brickwork or panels
- Draughts at frames across a block
Mastic sealing near Swiss Cottage
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
On site: what to expect
We follow your site rules from the start: sign-in, induction and whatever permit system the building uses. With the paperwork done, we take the joints in the sequence agreed with you. In Swiss Cottage, most buildings stay in use during the work, so we agree zones and timings with the building or facilities manager. Phased work keeps the rest of the building in use.
- We check the asbestos register for older buildings and look at the joints.
- A fixed quote covers the joints, products and order of work.
- Failed mastic is removed completely.
- Joint faces are cleaned, backed and resealed.
- We finish each building before moving to the next.
Before we start on site
- Have the specification and drawings to hand
- Flag any permit to work we will need
- Tell us your opening times and when work is allowed
Ask for a quote
For a fixed quote, ring 01277 525 020 or email drawings and photos with the site address and an outline of the work. You can also send details through our quote form.
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Mastic sealing in Swiss Cottage
Treatment starts with a proper look: which joints have failed, why, and whether sealant is the right answer. Old mastic is removed entirely, the faces prepared, primer used where the maker specifies it and new sealant tooled in, with backing rod setting the depth where it’s needed. If you are dealing with no planned programme for sealant and worn sealant at communal door frames, we can put it right, whatever the surface. Looking for mastic applicators who cover Swiss Cottage? We’ve been sealing commercial buildings since 2005.
For managing agents in Swiss Cottage, resident access, notice periods and the building’s rules shape the job. Work is planned with the agent so residents get notice and access is arranged in advance.
A 12-month guarantee applies to all our work. Should something we installed fail, speak to us on 01277 525 020 or use the quote form and we will come back to it.
- Place
- Swiss Cottage (NW3, NW8, NW6)
- Wider area
- Greater London
- Guarantee
- 12 months on our workmanship
- Quote
- A fixed quote before we start
- Phone
- 01277 525 020
- Updated
- 3 November 2026
Quoting for work in Swiss Cottage
We price every job individually. The main factors are:
- Specialist products, such as fire-rated or hygienic sealants
- Travel to remote or island sites
- How much existing material needs removing
- Access and working height
Cost follows what’s involved: stripping out, preparation, sealing, access and phasing. Call for a fixed quote.
Details that help us quote
A few photographs plus some basic facts will normally do. It helps to include:
- When you need the work done
- Asbestos survey details if the building is older
- Whether the building will be occupied during the work
- A wide shot and a close-up of the area
If there’s a specification, drawings or a tender package, send it with your enquiry, and we will price against exactly what is specified. Smaller jobs need nothing more than photos and a few notes.
Aftercare for building managers
Regular inspection catches problems early. Specifically:
- Avoid piecemeal callouts where you can
- Encourage occupiers to report problems at frames
- Start inspections with the most exposed faces
- Track which buildings were done and when
Ask residents or tenants to report draughts or leaks round windows early. Early reports catch failures before damage spreads.
Water getting in round frames can damage plaster, decoration and the frames themselves. Resealing early keeps the job small.
General trades versus a 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 easy to get wrong without experience.
Some joints are best left to specialists: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. Getting these wrong typically costs more in the end than doing them right.
Common questions from Swiss Cottage clients
Do you take on jobs in Swiss Cottage where loading and access are tightly controlled?
Yes. Booked loading bays, goods lifts and permit-to-work systems are normal for London jobs. Share the building’s contractor rules and we’ll work to them.
We manage a building near South Hampstead station. Can you help?
Yes, and several blocks can go on one quote. We work to your notice and access arrangements.
What paperwork can you provide?
We are CHAS accredited, a Constructionline member and carry public liability insurance. Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we’ll confirm with the quote.
How soon can the area be used again?
Curing time varies by product, and we confirm it on the day.
Can weather delay the job?
It can, for external work. Wet joints and cold, damp or frosty conditions stop the sealant bonding properly, so we watch the forecast and rearrange outside work if we have to. Indoors, the weather is rarely a problem.
Do you check for asbestos in old sealant?
Some mastics in pre-2000 buildings contain asbestos. We check the asbestos register or survey before disturbing it, and if it’s suspected, work stops until it’s tested.
Will residents or tenants be disturbed?
Residents and tenants carry on as normal. If any flats or units need access, we will tell you in advance so you can arrange it with occupiers.
Looking after buildings in and around Swiss Cottage
Blocks in London are usually run by managing agents, landlords or housing associations, with residents to notify and access to arrange. We work to your notice and access plan. There are three care or nursing homes within about 2 miles of Swiss Cottage. Frame mastic on care buildings is best renewed elevation by elevation, with the manager deciding timings.
If you manage student housing near a university such as Regent's University London (1.4 miles south-east of Swiss Cottage), the summer turnaround is the time for mastic. Trustees of buildings like Church of All Souls can bring frame and external mastic into a planned maintenance list.
Swiss Cottage is about 1 mile south of Hampstead, in Greater London. Swiss Cottage sits inside our coverage and the rest of Greater London, with the same fixed quotes and 12-month guarantee as everywhere else. Our Greater London coverage takes in 764 places, large and small.
We cover the NW3, NW8 and NW6 postcode districts. We cover commercial and managed buildings on Avenue Road, Acacia Road and Harben Road and the roads nearby. Just outside Swiss Cottage, we also work in South Hampstead (1 mile north), St John's Wood (1 mile south), Haverstock (1 mile east), Belsize Park (1 mile east) and Primrose Hill (1 mile east). Nearby towns on our patch include London (4 miles south-east), Kensington (3 miles south-west), St Pancras (3 miles south-east), Shoreditch (4 miles east), Walthamstow (7 miles north-east) and Hoxton (4 miles east).
What’s near Swiss Cottage
Locally, jobs take us to sites close to Cafe Med pub, Holy Trinity CofE Primary School and Primrose Hill, among other places. Nearby too are Cecil Sharp House (1.1 miles east) and St. Mary's Town and Country School (under half a mile north-east). Swiss Cottage has its own railway station: South Hampstead station. Other landmarks nearby include Montfichet's Tower (3.7 miles south-east) and Isokon Gallery (0.8 miles north-east). The countryside around Swiss Cottage includes The Long Water and Primrose Hill.
Also near Swiss Cottage
Other services in Swiss Cottage
Surface by surface
Communal areas
Communal entrances, stairwells and corridors have joints at door frames, screens, skirting and floor edges. Fresh joints make shared areas look looked after.
Tenement and older buildings
Stone needs a neutral-cure product and we choose accordingly.
Do you need mastic sealing in Swiss Cottage?
We often find joints filled solid with no backing rod so the mastic is bonded on three sides. That three-sided adhesion stops it stretching and it tears.
If one of these sounds familiar, it’s time for a closer look:
- Communal area joints that look neglected
- Brittle perimeter mastic across a building
- Old repairs sealed over failed mastic
- The same joint failures repeated across a portfolio
Landlords with units on estates such as Regis Road Business Park, 1.4 miles north-east of Swiss Cottage, can bring frame, door and external mastic across several units into one programme.
Before you book anyone
- What level of public liability insurance do they hold?
- The terms of the workmanship guarantee
- How the joint faces will be prepared and primed
- What site paperwork they can supply