Greater London · England
Kenton Sand Mastic
Window and door surrounds in Kenton need attention? We cut out the old, prepare the joints and apply the right sealant.
- Draughty sash windows at the surround
- Crumbling sand mastic round a window
- Window mastic to renew ahead of painting
About our sand mastic in Kenton
Sand mastic suits most period window surrounds. Newer frames normally get a flexible sealant instead and we’ll explain which is best for yours. Typical jobs include window mastic to renew ahead of painting and crumbling sand mastic round a window, across tenement windows, sash and case windows and stone surrounds.
London has a lot of flats and conversions, where windows are often on upper floors. In a converted house or block, the lease normally says who is responsible for the windows, so it’s worth checking before booking.
Big or small, it’s backed by our one-year guarantee.
- Place
- Kenton (HA3, HA7, HA1)
- Wider area
- Greater London
- Cover
- One year on every job
- Quote
- A clear price before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
What sealant work can’t fix
New sealant cannot fix everything, and we will tell you before work begins. It won’t solve:
- Decisions on consent for listed homes
- Sash cords, weights and draught-proofing of the sashes
- Damaged stone surrounds
If in doubt, phone 0345 464 0079 or send us an email and we’ll say what we think.
Surfaces we seal
- Brick reveals
- Period & listed homes
- Stone surrounds
- Tenement windows
- Sash and case windows
- Timber door frames
Why act early in Kenton
A silicone bead can be quicker, but on period stone or brick it often looks out of place. Sand mastic is the traditional material and finishes neatly against the masonry. Converted houses in London often have a bathroom above someone else’s living room, and a slow leak from a failed seal can end up in the flat below. Dealing with it early is far simpler.
We do not show prices on the website, because each job is priced on what it involves. For a quick quote, please ring 0345 464 0079 or email us.
What you get with us
- A 12-month guarantee on all work
- 4.9 on Google from 180+ five-star reviews
- Neat joints and a tidy finish
- 20+ years of sealant experience
Take a look at our cost guide or what customers say.
Landlord and commercial work in Kenton
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
We work for landlords and agents as well as householders. Resealing between tenancies keeps a property looking cared for.
What the job involves on each surface
Sash and case windows
The mastic round a sash window is on show, so a neat, even finish matters.
Period and listed homes
Period homes look their best with traditional materials, and sand mastic is one of them.
Quotes for sand mastic in Kenton
Jobs vary more than people expect. The main factors:
- The size of the job
- The old material and how stubborn it is
- How many areas need sealing
- Which sealant suits the joint
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, along with when we can work on site. Call for a quick quote and we will go through it with you.
What to tell us for a quote
What to tell us when you ask for a quote:
- What’s wrong with the joints now
- A few photos by email, if you can
- Where the property is
- Any access issues, like height or stairs
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and email pictures if that’s easy.
Towns and villages near Kenton
Other services in Kenton
Kenton homes and the weather
Historic houses like Headstone Manor (about 2.2 miles west) are a reminder that the area around Kenton has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window. In London conversions and blocks, the lease decides who is responsible for the frames, so it’s worth checking before booking.
If you live in an older home near Church of St Mary, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. Kenton is in London, so parking needs planning: let us know about parking bays, permits or a driveway. Rented homes near Kenton station change hands often, and older sash windows in a rental need their mastic kept sound to keep the weather out.
Kenton is about 2 miles south of Stanmore, in Greater London. From the centre of Kenton to the outskirts, we cover sand mastic for every kind of property. Our Greater London coverage runs to 764 places, Kenton among them. You can also see our page for London, about 11 miles away.
We cover every part of HA3, HA7 and HA1 for sand mastic and the streets around it. If you need sand mastic at a property on Retreat Close, Kenton Road and Woodgrange Avenue or anywhere close by, we can help. Kenton sits on or near the A4006, so getting to you is simple. Nearby, we also carry out sand mastic in South Kenton (1 mile south), Northwick Park (1 mile south-west), Greenhill (1 mile west), Wealdstone (1 mile north-west) and Harrow on the Hill (2 miles south-west). Larger places within reach include London (11 miles south-east), City of Westminster (8 miles south-east), Marylebone (8 miles south-east), Kensington (7 miles south-east), St Pancras (9 miles south-east) and Shoreditch (11 miles south-east).
Local landmarks in Kenton
Locally, jobs take us to homes and businesses close to Uxendon Manor Primary School, The New Moon pub and Preston Park, among other places. For rail, the closest station is Kenton station, about 0.5 miles south-west. Well-known places in the area include St. Anns (1.3 miles west) and Hilfield Castle (4.9 miles north). Green spaces nearby include Masons Field and Northala Fields.
The process
There isn’t much for you to do on the day. Show us the job and we’ll take it from there. The job generally takes anything from a few hours to a full day, depending on how many windows. In Kenton, as in most of London, parking needs a little planning. It helps if you can point us to a visitor permit or a bay close to the door.
- We look at the surrounds with you and agree the joints to renew.
- Old mastic and any loose material are raked out.
- Deep gaps are packed so the mastic sits at the right depth.
- We apply the mastic by hand and shape it.
- The surface is finished to suit the stone or brick.
Before we arrive
- For indoor joints, keep the area dry beforehand if you can
- On commercial sites, let us know about site rules
- Mention if the joints have been sealed before
Get a quote
There’s no standard price list, because every job is different. Instead, we give you a clear quote for your job. To arrange one, ring 0345 464 0079 or email us.
Advice
Common questions in Kenton
I let a flat near Kenton station. Can you help?
Yes, landlords and agents are among the people we work for. You can call 0345 464 0079 or email us with the details for a clear quote.
Can you do sand mastic in Kenton?
Yes, Kenton is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or drop us an email with a few details of the job, and we will send you a clear quote.
How long does sand mastic take to go off?
A skin forms quite soon, but full hardening takes longer. We will explain what to expect before we leave.
What information do you need?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
Is consent needed for window work on a listed home?
Checking first is sensible. Your local planning authority can say if consent is needed for work on a listed home or in a conservation area.
Is it possible to take out silicone and use sand mastic instead?
Yes, we do this often. All the old silicone is removed first so the mastic can sit properly.
Will it make a mess?
Tidy work is part of the job. We protect what’s around the joints, and we clear up when we are done.
Is there any odour?
There can be a smell while the sealant cures, but it fades. Opening a window helps.
Should I try it myself first?
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.