Greater London · England
Kensal Rise Sand Mastic
Window and door surrounds in Kensal Rise need attention? We remove the old material, prepare the joints and seal them properly, with a 12-month guarantee.
- Cracked mastic round a front door frame
- Open joints round the window box
- Cement or filler used on old window joints that has cracked
What happens on the day
All our tools and materials come with us in the van, so there’s nothing for you to buy. After a quick look at the joints together, we protect the area and start. It normally takes a few hours per window, depending on the condition of the joints. For a job in Kensal Rise, parking and access are the things to plan: tell us about permits, visitor bays or off-street space, which floor we’re working on and whether there’s a lift.
- Each surround is checked first.
- The joint is raked out and cleaned.
- We fill deep gaps so the new mastic is not too thick.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
Getting ready for the visit
- Mention any tricky access
- On commercial sites, let us know about site rules
- Mention any leaks or damp you’ve noticed
Ask for a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we’ll explain how we’d tackle it. When it suits you, phone 0345 464 0079 or email us.
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Sand mastic for homes and businesses in Kensal Rise
Old sand mastic cracks, crumbles and falls out over time, leaving gaps round the window. Renewing it closes the gap and tidies the surround. If you’re dealing with a silicone bead on a sash window that spoils the look and gaps round a timber door in stone or brick, we can put it right.
London homes have every kind of window, from timber sashes in period terraces to aluminium and uPVC in newer blocks. Over the years, the sealant around them shrinks, cracks and pulls away, which is when draughts and damp patches appear in homes in Kensal Rise.
A 12-month guarantee comes with the work, just as it does everywhere we cover.
- Location
- Kensal Rise (W10, NW10, NW6)
- Wider area
- Greater London
- Guarantee
- 12 months on all our work
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Places near Kensal Rise
More services for Kensal Rise
FAQs for Kensal Rise
Is Kensal Rise in your area for sand mastic?
Yes, Kensal Rise is within the area we cover. We work across London and the South East. Just phone 0345 464 0079 or send us an email with a few details of the job.
Is parking a problem for a job in Kensal Rise?
Parking in Kensal Rise, as in most of London, takes a little planning: a visitor permit or a bay close to the door helps a lot, so mention what’s available when you book.
Is the work guaranteed?
There’s a 12-month guarantee on every job.
Can you quote for more than one area?
Yes, we can. Several rooms, windows or areas can go on one quote.
Do you hold any approvals?
Yes. We are approved under the ARBOMaster scheme, which is run for the Arbo sealant brand.
Should I check with the council before work on a listed or conservation-area home?
It’s best to ask your local planning authority first. Sand mastic is often favoured as like for like but the decision is theirs.
What sealant do you use?
The product depends on the job: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.
Can tenants book the work?
Of course. Ask your landlord first, and we can send them the quote if that helps.
Keeping the joints in good condition
Looking after new joints is easy:
- Avoid patching sand mastic with silicone
- Go gently near the mastic when preparing windows
- Ask the planning authority about consent for listed or conservation-area homes
- Clear gutters so water does not pour onto the windows
Keep paint scrapers and sanders off the mastic when redecorating. Hard scraping can loosen it.
Renewing mastic before redecorating saves doing it twice. Paint over cracked mastic only covers it up.
Surface by surface
Sash and case windows
The mastic round a sash window is on show, so a neat, even finish matters.
Stone surrounds
Stone openings are rarely perfectly straight, so the joint varies in width. We shape it by hand to follow the stone.
For landlords and businesses
Failed sealant is one of the commonest items on a check-out report, and it’s quick to put right between tenancies. Several properties can be quoted together.
We also work for property managers and facilities teams in Kensal Rise and across Greater London. We can quote a run of properties together, and we’re fully insured for the work.
What sealant work can’t fix
We won’t take on work that will not last, so here’s what sealant cannot put right:
- Masonry that needs repairing
- Planning or listed building consent (your local planning authority decides)
- Timber that has rotted
If in doubt, phone 0345 464 0079 or email us and we will say what we think.
Where we work in Kensal Rise
- Tenement windows
- Stone surrounds
- Period & listed homes
- Timber door frames
- Sash and case windows
- Brick reveals
What we’re called out for in Kensal Rise
Timber swells and shrinks with the weather. That movement opens up the mastic joint over time.
Keep an eye out for any of the following:
- Old sand mastic that has cracked, crumbled or fallen out
- Draughty sash windows at the surround
- Cement or filler used on old window joints that has cracked
- Mastic round period door frames that has failed
Rented homes near Kensal Rise station change hands often, and older sash windows in a rental need their mastic kept sound to keep the weather out.
Before booking anyone
- What happens if the job turns out different
- How long to leave it before use
- How the surfaces are prepared before sealing
- Whether they seal over old material or remove it
Frames and glazing around Kensal Rise
In a converted house or block, who looks after the windows depends on the lease, so it’s worth checking before booking. Historic houses like Winfield House (about 2.2 miles east) are a reminder that the area around Kensal Rise has older buildings as well as new. 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.
If you live in an older home near Church of St John the Evangelist, the joint between an old wall and a newer frame is usually the first place rain gets in. Schools such as Ark Franklin Primary Academy are buildings too, and the mastic around its windows and doors needs looking after like any other building’s.
Kensal Rise is about 1 mile south-west of Kilburn, in Greater London. Every kind of property in Kensal Rise can book us for sand mastic. The work is guaranteed for a year. 764 places in Greater London are on our list, from the larger towns to small villages. We also work in London, around 6 miles away.
Here we cover the W10, NW10 and NW6 postcode area for sand mastic. Local streets include Hazel Road, Hiley Road and Kempe Road, and we cover them all. If you’re just outside Kensal Rise, we cover 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). Within a short drive, we also cover 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
In Kensal Rise, that means homes and buildings near Paradise by Way of Kensal Green pub, Queens Park Community School and Brondesbury College and the streets around them. There’s a railway station in Kensal Rise itself: 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). For a walk, there’s The Long Water and Campden Hill.
Leave it or put it right?
If you’re redecorating, renew the mastic first. Paint over cracked mastic will not stop the gaps, and the new mastic is traditionally left unpainted. Converted houses in London often have a bathroom above someone else’s living room, so a small leak from tired sealant can mean a neighbour’s ceiling and a lot of disruption. Putting it right early is much less trouble.
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, any mould to treat, and whether the work is at height. We take all of that into account in your quote.
Why us?
- Neat joints and a tidy finish
- Domestic, commercial and hotel work
- Over 20 years’ experience
- Every job guaranteed for a year
Take a look at our cost guide and what customers say.