Kensal Town mastic sealing
We carry out mastic sealing for building owners, managing agents and housing associations in Kensal Town and the surrounding area. Send photographs or drawings for a fixed quote.
- Damp patches beside frames
- Old repairs sealed over failed mastic
- Draught complaints from residents or tenants
Mastic sealing in Kensal Town
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Mastic sealing in Kensal Town, done properly
Before work starts, most agents and landlords want the documents in order. For documents, tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we will confirm with the quote. We are CHAS accredited and a Constructionline member, with public liability insurance. If you have damaged joints in communal entrances and corridors and occupiers reporting cold air round windows, we can put it right, on window and door perimeters on blocks, balcony and threshold joints and communal entrances and stairwells alike. A single leaking joint is often how a building in Kensal Town first comes to us: we look at the rest while we are there and tell you what we find.
Across Greater London, Kensal Town included, the ULEZ applies, and parking and loading rules differ from street to 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 are clear about what is covered before work starts.
- Place
- Kensal Town (W10, W9, W11)
- Region
- Greater London
- Cover
- 12 months on our workmanship
- Quotes
- Fixed quote, scope in writing
- Telephone
- 01277 525 020
- Last updated
- 3 November 2026
Why deal with it now?
Replacing mastic before water gets in is a planned job. Once water has tracked in, the repair list grows, and the complaints come with it. Failed sealant in a building in Kensal Town can quickly affect neighbours, tenants or the floor below. Dealing with it early is simpler for everyone.
The work involved drives the cost: removing old material, preparing the joints, the product, the access and how the work is phased. Call for a fixed quote.
Why us?
- Health and safety: CHAS accredited
- RAL and finish matching where the product range allows
- Public liability insurance in place
- One contact handling all your sites
Read our cost guide or our accreditations.
Signs you need mastic sealing in Kensal Town
Topping up old mastic is a common shortcut. New sealant won’t grip failed sealant and the repair soon fails.
Things that normally lead to an enquiry:
- Patchy repairs in mismatched sealant
- Open joints in brickwork or panels
- Cracked, hardened mastic round windows on a block
- Mastic failing across several blocks on an estate
Blocks of flats and mixed-use buildings often cluster around stations such as Queens Park (London) station, 0.7 miles to the north of Kensal Town, and their window and balcony mastic tends to age at the same rate across a building.
What your quote should include
- Health and safety accreditation such as CHAS
- How the existing material will be dealt with
- How joint depth will be controlled
- Will CSCS-carded applicators be on site?
Looking after the joints
Your facilities or cleaning team can help the joints last. Pass these on to them:
- Check the asbestos register before any old mastic is disturbed
- Make mastic part of routine maintenance checks
- Encourage occupiers to report problems at frames
- Prioritise elevations facing the weather
Add mastic joints to your cyclical inspections. Watch for splits, open gaps, hard or chalky surfaces and mastic pulling away, and note the building and elevation.
Leaks at window perimeters spoil finishes and can affect frames. Early resealing is far simpler than repairs inside.
How a job runs
We follow your site rules from the start: signing in, inductions and any permit to work. Once we’re cleared to begin, the joints are worked through in the order agreed with your site contact. In Kensal Town, most buildings stay in use during the work, so zones and timings are agreed with whoever manages the building. Areas are handed back as each section is finished.
- We inspect the joints, building by building, and record what has failed and why.
- A fixed quote follows, split by block or building if that suits you.
- The sequence and the dates are fixed with you, giving you what you need to notify occupiers.
- We remove the old mastic completely and clean the joint faces back.
- Backing rod and primer go in where the joint and the product need them, then new sealant is applied and tooled.
- Each building is checked on completion and the work carries our 12-month guarantee.
Getting the site ready
- Arrange parking or a loading space
- Tell staff and tenants when we will be in
- Tell us your opening times and when work is allowed
Getting a fixed quote
Need a figure for a tender or a budget? We’ll quote against your scope and drawings you can plan around. For a chat about it beforehand, call the office on 01277 525 020 or email drawings and photos.
Related advice
Should maintenance staff do it?
Certain joints really need a specialist: for instance fire-rated seals that must match a tested detail, trafficked floor joints and external movement joints. Getting these wrong usually costs more in the end than doing them right.
For most general trades, sealant is a sideline. A specialist prepares properly, controls joint depth and picks a product with the right movement class, which is what makes a joint last.
Surface by surface
Communal areas
Communal entrances, stairwells and corridors have joints at door frames, screens, skirting and floor edges. Tidy, sound joints keep them looking cared for.
External movement joints
Brickwork, blockwork and panel joints let a building move. Once that sealant goes, rain can reach the wall.
Planned mastic for Kensal Town portfolios
In London, mastic work on a block goes through the managing agent or landlord, with notice to residents. Our programme follows the access you agree with residents.
Trustees of buildings like St Thomas Kensal Town can bring frame and external mastic into a planned maintenance list. If your remit includes a building such as St Thomas' CofE Primary School, frame and door mastic can be programmed for the holidays.
Kensal Town is about 2 miles north of Kensington, in Greater London. Kensal Town sits inside our coverage and the rest of Greater London, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. Our Greater London coverage takes in 764 places, large and small.
Business premises anywhere in W10, W9 and W11 are within our area for mastic joints. If your site is on Peach Road, Parry Road and Barlby Road or close by, send details and we’ll quote for mastic joints. Main routes into Kensal Town include the A4207, useful when we plan access and materials. Just outside Kensal Town, we also work in North Kensington (1 mile west), Notting Dale (1 mile south), Kensal Rise (1 mile north-west), Queen's Park (1 mile north-east) and Kensal Green (1 mile north-west). Nearby towns on our patch include London (5 miles east), City of Westminster (3 miles east), Marylebone (3 miles east), St Pancras (4 miles east), Shoreditch (6 miles east) and Walthamstow (9 miles north-east).
Landmarks near Kensal Town
Recent enquiries here include premises near All Saints Catholic College, Emslie Horniman's Pleasance and Maida Vale School, among other places. The nearest railway station is Queens Park (London) station, about 0.7 miles north. A little further out are Westfield London (1.2 miles south-west) and Paddington General Hospital (0.5 miles east). Green spaces nearby include Campden Hill and Greville Place nature reserve.
Places near Kensal Town
More services for Kensal Town
Your questions answered
Do you take on jobs in Kensal Town where loading and access are tightly controlled?
Yes. Booked loading bays, goods lifts and permit-to-work systems are normal for London jobs. The building manager’s rules go straight into our method.
Will you take on a block within reach of Queens Park (London) station?
Yes, and several blocks can go on one quote. Give us the building’s details and say how residents are notified, and we will quote and plan to suit.
Does weather matter for sealant work?
Outside, yes. The joint has to be dry and within the product’s temperature range, so damp, frosty or very cold days can stop external work. Internal work is rarely affected.
Do you supply RAMS and insurance details?
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.
How many days will you need on site?
The duration is planned around your programme and the access we’re given. We will give you an estimate of time on site when we quote.
Do you work for managing agents and housing associations?
Yes, block and estate work is a core part of what we do. We work through buildings in a planned order so you can plan around it.
When is resealing likely to be due?
There isn’t a single answer, since movement, weather, cleaning and use all affect it. Regular checks let you plan resealing before leaks or damage.