Greater London · England
Kensal Rise Window Mastic
Mastic around window and door frames, sills and patio doors for homeowners, landlords and businesses in Kensal Rise. Fully insured, ARBOMaster approved and guaranteed for a year.
- Rushed sealant from a window installation
- Cold air getting in at the frame edge
- Draughty joints inside around the window
Kensal Rise: your questions answered
Do you cover Kensal Rise for window mastic?
Yes, Kensal Rise is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or email us with a few details of the job, and we’ll send you a clear quote.
Can parking be tricky for a visit in Kensal Rise?
It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. The visit is then planned around what’s available.
Is the new sealant paintable?
Not if it’s silicone. Tell us your decorating plans and we will pick a sealant to suit.
Do you have sealant for grey or black windows?
Yes. We can use white, brown, anthracite grey, black or clear.
Do you work for letting agents?
Yes, regularly. Several properties can go on one quote, and between tenancies is a good time for the work.
Do you hold any approvals?
Yes. Mr Mastic is an ARBOMaster approved applicator and we are fully insured too.
How long should I leave it?
Different products cure at different speeds, so please follow the time we give you when we finish.
Where do you work from?
Our base is Crawley, with over 20 years’ experience. Our area covers South East England, London and Scotland.
Window mastic for homes and businesses in Kensal Rise
Colour matters on a frame. White, brown, anthracite grey, black and clear sealants are all available, so the bead blends with the window rather than framing it. Common call-outs are for rushed sealant from a window installation and white mastic on grey or black frames, across patio & French doors, timber windows & doors and window sills.
Much of London’s older housing was built with timber sash windows, some still in place and some long since replaced. Whatever is in the opening now, the joint between frame and wall is what keeps the weather out, in Kensal Rise as anywhere.
There’s a 12-month guarantee on every job, whatever its size.
- Where
- Kensal Rise (W10, NW10, NW6)
- Region
- Greater London
- Cover
- 12 months on all our work
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Window mastic in Kensal Rise: local notes
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. With historic houses such as Winfield House (about 2.2 miles east) nearby, there’s older building stock in the area around Kensal Rise as well as newer homes. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic.
Rented homes near Kensal Rise station change hands often, and sound mastic around windows and doors keeps out the draughts and damp that tenants notice first. Homes close to Church of St John the Evangelist include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. As a London address, Kensal Rise can be tricky for parking: let us know about parking bays, permits or a driveway.
Kensal Rise is about 1 mile south-west of Kilburn, in Greater London. Homes, rented property, offices and hotels in Kensal Rise is covered for window mastic. The work is guaranteed for a year. Across Greater London, we cover 764 places, and Kensal Rise is one of them. You can also see our page for London, about 6 miles away.
Every address in W10, NW10 and NW6 is within our area for window mastic. That includes homes and businesses on Hazel Road, Hiley Road and Kempe Road and the roads around them. We also cover the places around Kensal Rise: Kensal Green (1 mile west), Kilburn (1 mile north-east), Queen's Park (1 mile east), North Kensington (1 mile south) and Kensal Town (1 mile south-east). We also work in nearby towns such as London (6 miles south-east), City of Westminster (3 miles south-east), Marylebone (3 miles east), St Pancras (4 miles east), Shoreditch (6 miles east) and Walthamstow (9 miles north-east).
Near you in Kensal Rise
Typical jobs here are in homes near Paradise by Way of Kensal Green pub, Queens Park Community School and Brondesbury College, among other places. Kensal Rise has its own railway station: Kensal Rise station. Well-known places in the area include Brent Museum and Archives (1.1 miles north-west) and Westfield London (1.8 miles south). Open spaces near Kensal Rise include The Long Water and Campden Hill.
Landlords, agents and businesses in Kensal Rise
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Resealing at the right time is simple maintenance that we can handle for you.
If you manage several properties in or around Kensal Rise, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs, and photos by email help.
What affects the quote in Kensal Rise
We do not publish a price list, because no two jobs are the same. The quote depends on:
- The product the joint needs
- How easy the joints are to reach
- Any mould that needs treating
- How many rooms, windows or areas are involved
We do not show prices on the website, because the cost depends so much on the job itself. For a quick quote, please ring 0345 464 0079 or send us an email and we’ll talk you through it.
Helping us quote
What to tell us when you ask for a quote:
- Where the property is
- The type of property
- The problem you’ve noticed
- A few pictures by email, if you can
We quote each job on its own, so the first step is telling us about yours. Simply call 0345 464 0079 or send us an email and describe the job and send pictures if you have them.
What the job involves on each surface
Timber windows & doors
Wood swells when it’s wet and shrinks when it dries, so the joint must stay flexible. We seal onto sound, dry paintwork or timber.
Composite doors
An exposed front door gets wind-driven rain, and the top and bottom corners tend to fail first. Those corners get the most care.
Aftercare tips
No joint lasts for ever, but care makes a real difference. Our tips:
- Air rooms to keep condensation down around windows
- Make sure the drainage slots aren’t blocked
- Avoid harsh chemicals near the mastic
- Look round the frames every year or so
Have a look at the joints once a year, ideally after winter. Small splits are simple to catch before they leak, and if anything looks wrong, just phone 0345 464 0079 or email us.
Draughts get worse, not better. As the old mastic shrinks further, more air gets through, and heat escapes around the frame. A new joint closes it up.
When it is not the sealant
Sealant is not the answer to every problem, and we will tell you before we start. It will not solve:
- Faulty window hardware
- Worn gaskets, brush seals or a door that has dropped
- Condensation trapped between the panes
If you are not sure, just call 0345 464 0079 or drop us an email and we’ll give you a straight answer.
Joints and surfaces we work on
- uPVC windows
- Patio & French doors
- Composite doors
- Aluminium frames
- Window sills
- Timber windows & doors
Towns and villages near Kensal Rise
What else we do in Kensal Rise
The process
The work is kept neat and contained to the joints we are treating, so you can carry on as normal. The job generally takes a few hours for a few frames, or a day or more for a whole house, and we tell you how long to leave it before we go. Many London jobs are in flats, so we come ready for stairs, narrow hallways and shared entrances. If the building has a concierge, managing agent or access rules, tell us when you book.
- First, we confirm safe access to each frame.
- Old, cracked mastic is removed completely, along with any loose debris.
- The surfaces are cleaned and left dry, and primed where the sealant calls for it.
- Deep voids are backed, then the sealant is gunned in.
- We tool the joint so water runs off, then clear up.
Getting ready for the visit
- Mention if the joints have been sealed before
- Tell us if parking is tricky
- Let us know about stairs, lifts or work at height
Get a quote
For window mastic in Kensal Rise, phone 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and you’ll get a clear quote before work begins.
Read more
Why deal with it now?
Getting a straight, even bead on an outside frame takes practice, especially upstairs. We cut out properly, back deep gaps and tool every joint neatly, using a product chosen for the frame and wall. In London conversions, one flat’s bathroom is often above another flat’s ceiling, and a slow leak from a failed seal can end up in the flat below. Dealing with it early is far simpler.
Rather than a set price list, we look at what your job involves: the amount of work, the old material and the access. You will know the price before we begin.
Why book with us
- Colour picked to suit the job
- 180+ five-star Google reviews
- Sanitary silicone with an anti-fungal additive in wet areas
- ARBOMaster approved applicator
Read what affects the cost or what customers say.