The Mastic Doctor team standing beside their branded vans outside an office building
Greater London · England

Facade Sealing in Kentish Town

Sealant work in Kentish Town for main contractors, managing agents and facilities managers: facade joint and window perimeter sealing on commercial buildings, quoted at a fixed price.

  • Sealant pulling away from frames or panels
  • Draughts around frames and panels
  • Leaks at window and door perimeters
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
12-month guarantee on our workmanship.
Covering the South East & Scotland
CHAS accredited
Fully insured: £5m PL

Facade sealing for Kentish Town sites

Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.

How we handle facade sealing in Kentish Town

Sealant around windows, doors and cladding panels stops rain reaching the wall behind. When a perimeter bead splits or peels, water finds its way behind frames and into the structure. We remove failed sealant and install a new bead chosen for the joint and how far it moves. We work on perimeter joints where frames meet the structure, coping and flashing joints and stone and brick facade joints, and the usual reasons a site gets in touch are damp patches beside frames after rain and staining on stone next to old sealant. Whether you call it commercial sealant work, mastic application or joint sealing, the work in Kentish Town is the same: the right product in a properly prepared joint.

Around Kentish Town, as across London, much of the work is refurbishing existing buildings as well as building new ones. New frames, overcladding and fit-outs all end in perimeter and facade joints, frequently with occupants close by.

Every job is signed off with a 12-month guarantee. It’s a plain promise: if the work we did fails within twelve months, we return to fix it.

The Mastic Doctor team standing beside their branded vans outside an office building
Location
Kentish Town (NW5, NW1, NW3)
Wider area
Greater London
Guarantee
12 months on every job
Price
Fixed quote, scope in writing
Call
01277 525 020
Updated
3 November 2026

When to bring in a specialist

For most general trades, sealant is a sideline. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint, which is what makes a joint last.

Redoing a failed joint usually costs more than getting it right at the outset, because the whole bead must be removed and the faces cleaned back again. That’s why many clients bring in a specialist from the beginning.

Our process

In a busy building, we agree a sequence with your contact so the disruption stays in one area at once. Each section is protected, cleaned back and sealed before the next one starts. All of Greater London is in the ULEZ, and kerbside space in Kentish Town can be scarce. Let us know about any on-site parking or loading arrangements when you send the job details.

  1. Photos, drawings or a visit tell us about the joints and the access.
  2. Product choice follows the joint’s movement and substrate.
  3. The existing bead comes out in full and both faces cleaned back.
  4. Primer is applied where the maker specifies it.
  5. Backing rod is fitted and the new sealant gunned in and tooled.
  6. The finished joints are checked with you.

Preparing the site

  • Explain the parking and delivery arrangements
  • Flag any permit to work we’ll need
  • Warn occupants and staff about the work

Quotes

Quotes are fixed against the scope you send, so the cost is agreed before work starts. To ask for one, ring 01277 525 020 or email the details over.

Get a price

Read more

Maintenance after handover

Regular inspection catches problems early. In particular:

  • Keep sills, gutters and drainage paths clear
  • Investigate damp beside windows promptly
  • Keep the sealant details on the building file
  • Keep pressure washers away from fresh sealant

Record the sealant type and date on the building file. Future work can then match the product and colour without guesswork.

Get the joint design right when resealing: correct depth, proper backing and a sealant that can take the movement. A well-designed joint lasts longer than a like-for-like copy of a failed one.

Your questions answered

Can you work in a London building with booked loading and goods-lift slots?

Yes. Booked loading bays, goods lifts and permit-to-work systems are normal for London jobs. Send the building rules and access times with your enquiry. All of Greater London is inside the ULEZ, and our planning allows for it

Will you plan work around the academic year at somewhere like University of the Arts London?

Yes. Education sites normally want the work in vacations or in phases during term, and we plan to suit. Any paperwork you need, from RAMS to our insurance certificate and CSCS details, is confirmed with the quote.

Do you need to see the site first?

Photos, drawings or a schedule are often enough to quote. Where they aren’t, we arrange a site visit.

Are you fully insured?

Yes. We are fully insured, including public liability cover.

Do you hold CHAS accreditation?

Yes. Mastic Doctor is CHAS accredited and a Constructionline member, which helps with supplier vetting.

Can one quote cover more than one building?

Yes. Multi-site work and planned programmes are a core part of the service, planned site by site to suit how each building is used.

Which sealant do you use on facades?

Low-modulus, neutral-cure silicone suits many facade and perimeter joints. Some joints call for hybrid, PU or polysulphide instead, depending on the substrate and the specification.

Sites and facades in and around Kentish Town

Site traffic in Kentish Town falls within London’s ULEZ, like everywhere else in Greater London. Delivery slots and scarce storage shape how and when the mastic goes in. The area within 2 miles of Kentish Town holds a good number of hotels. Hotel refurbishments often run to tight programmes between busy periods, and perimeter and sanitary sealant has to keep up.

Further education sites such as Working Men’s College (0.6 miles north-east of Kentish Town) are extended and refurbished from time to time, with mastic often programmed into the summer break. University estates such as University of the Arts London, 1.1 miles south-east of Kentish Town, tend to have a rolling programme of new buildings and refurbishments, each with window perimeters and facade joints to seal.

Kentish Town is about 2 miles east of Hampstead, in Greater London. Any commercial site in Kentish Town is covered, whether it’s a single job or part of a planned programme. Across Greater London, 764 places are covered, Kentish Town among them.

Work on facade joints is covered throughout NW5, NW1 and NW3, whatever the building. If your site is on Eton Road, Oval Road and Regal Lane or close by, we can quote for facade joints. Just outside Kentish Town, we also work in Chalk Farm (1 mile west), Camden Town (1 mile south-east), Gospel Oak (1 mile north), Primrose Hill (1 mile south-west) and Agar Town (1 mile south-east). Bigger towns within reach include London (4 miles south-east), Kensington (4 miles south-west), Shoreditch (3 miles south-east), Walthamstow (6 miles north-east), Hoxton (3 miles east) and Whitechapel (4 miles south-east).

Around Kentish Town

We work on buildings around Primrose Hill, Haverstock School and North Bridge House School, among other places. Other local landmarks include The Hawley Arms (less than half a mile south) and Vaughan Williams Memorial Library (0.5 miles south). Kentish Town has its own railway station: Kentish Town West station. Nearby you’ll also find O2 Centre (1.6 miles west) and Montfichet's Tower (2.9 miles south-east). Not far away are The Long Water and Primrose Hill.

Map of Kentish Town © OpenStreetMap contributors

When something else is needed

Before quoting, we check that sealant is the right answer. It isn’t the answer for:

  • Specialist high-level access methods
  • Leaks from roofs, gutters or failed flashings rather than sealant joints
  • Joints whose design needs changing by the specifier

If in doubt, call the office on 01277 525 020 or use the quote form and we’ll say what we think.

What we seal

  • Stone and brick facade joints
  • Window and door perimeters
  • Perimeter joints where frames meet the structure
  • Coping and flashing joints
  • Cladding panel joints
  • Shopfront frames

Signs you need facade sealing in Kentish Town

Not every failure is in the sealant: if the edge of the render, concrete or coating breaks away, the bead goes with it. When the joint edges need repair first, we say so.

Any of the following is a good reason to get the joints checked over:

  • Facade joints cracked through the middle
  • Failed seals around shopfront and entrance frames
  • Hard, chalky sealant that no longer flexes
  • Staining on stone next to old sealant

Recladding or extending a unit at a site like Regis Road Business Park (to the north of Kentish Town) brings panel joints and frame perimeters into the programme.

What your quote should include

  • The terms of the workmanship guarantee
  • How joint depth will be controlled
  • The named product and why it was chosen
  • Health and safety accreditation such as CHAS

How to choose a sealant contractor

Commercial clients in Kentish Town

Blocks and communal areas make up much of the work for housing associations and agents. We phase the work so people keep access, with each stage agreed with your site contact.

Facilities managers want contractors who arrive with the paperwork sorted. Let us know the documents you need (RAMS, insurance certificate, CSCS details) and we will confirm them with the quote.

Accreditations

Trusted. Accredited. Insured.