Greater London · England
North Hyde Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for North Hyde, backed by a 12-month guarantee. Call for a quick quote.
- Draughty sash windows at the surround
- Gaps between timber frames and stone or brick
- Patchy fillers round a sash window
Sand mastic in North Hyde, done properly
We renew sand mastic around sash windows and doors set in stone or brick. Out comes the old, loose mastic, the joint is prepared and new mastic is shaped by hand. If you have a silicone bead on a sash window that spoils the look and weathered mastic on the most exposed windows, we can help, whatever the surface.
Many London homes are flats, with windows high above the street. Who looks after the outside of the frames can depend on the lease, so check that first, and access in North Hyde is something to talk through when you book.
Our work is backed for twelve months.
- Where
- North Hyde (UB2, TW5)
- Region
- Greater London
- Guarantee
- A year, on every job
- Quotes
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
When it isn’t the sealant
To be straight with you, there are a few things sealant won’t fix:
- Rotten sashes, sills or window boxes (a joiner’s job)
- Whether work needs listed building consent
- Sash cords, weights and draught-proofing of the sashes
If you are not sure, just phone 0345 464 0079 or email us and we’ll give you a straight answer.
Joints and surfaces we work on
- Stone surrounds
- Tenement windows
- Sash and case windows
- Timber door frames
- Period & listed homes
- Brick reveals
Your questions about sand mastic in North Hyde
Is parking a problem for a job in North Hyde?
In much of London, parking needs planning: a visitor permit or a bay close to the door helps a lot.
Do you work for landlords with property near Southall station?
Yes, rental work is part of what we do. You can call 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before any work starts.
Are you ARBOMaster approved?
Yes. We’re ARBOMaster approved, the scheme for applicators of Arbo sealants.
Is the work guaranteed?
Every job comes with our one-year guarantee, and we are fully insured.
Can I choose the sealant colour?
We will suggest a colour to suit the surroundings, from white and clear to greys and other shades. The choice depends on the product the joint needs.
Where do you work from?
We’re a Crawley-based firm. Our area covers South East England, London and Scotland.
Do you do commercial work?
Yes. Larger jobs can be planned room by room or area by area to suit the site.
Are you fully insured?
Yes. We are fully insured.
North Hyde homes and the weather
With historic houses such as Osterley House (about 1.3 miles east) nearby, there’s older building stock in the area around North Hyde as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic. In London conversions and blocks, the lease decides who is responsible for the frames, so check that before booking.
For an older house near a landmark such as St Leonard's Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. North Hyde is in London, so parking needs planning: let us know about parking bays, permits or a driveway. Managing a site like Norwood Green Infant and Nursery School? Then its window and door frames need their mastic kept sound, just like a home’s.
North Hyde is about 1 mile south of Southall, in Greater London. Every kind of property in North Hyde can book us for sand mastic. The work is guaranteed for a year. Our area takes in 764 places across Greater London. We also work in London, about 12 miles from North Hyde.
We cover every part of the UB2 and TW5 postcode area for sand mastic. You’ll find streets such as Lea Road, Fern Lane and Court Road, and we cover them all. North Hyde is on the A3005, which makes it straightforward to reach with everything needed for sand mastic. Nearby, we also carry out sand mastic in Heston (1 mile south), Norwood Green (1 mile east), Osterley (1 mile east), Lampton (1 mile south-east) and Hounslow West (2 miles south). We also work in nearby towns such as London (12 miles east), City of Westminster (10 miles east), Marylebone (10 miles east), Kensington (8 miles east), St Pancras (12 miles east) and Shoreditch (13 miles east).
Near you in North Hyde
Around North Hyde, our work takes us to homes and buildings near Minet Country Park, The Plough Public House and Featherstone High School, among other places. The closest station to North Hyde is Southall station, about 1 mile north. A little further out are Museum of Army Music (2.9 miles south-east) and St Bernard's Hospital (1.6 miles north-east). The countryside around North Hyde includes Long Wood and Garden Lake.
Landlords, agents and businesses in North Hyde
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. We can quote for more than one property at once.
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.
What happens if it’s left?
Silicone might seem the quicker option, but on period stone or brick it often looks out of place. Sand mastic suits the building and finishes neatly against the masonry. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and once it shows in North Hyde, the repair is bigger than a sealant job.
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether the work is at height. We take all of that into account in your quote.
Why choose Mr Mastic in North Hyde
- Tidy, careful work
- Anti-fungal sanitary silicone in wet areas
- Old sealant always removed completely
- Homes, businesses and hotels
Take a look at our cost guide and our reviews.
Nearby places to North Hyde
What else we do in North Hyde
What affects the cost of sand mastic
Every job gets its own quote. This is what makes a difference:
- Whether the work is at height
- How many rooms, windows or areas are involved
- Mould in or behind the old joints
- The amount of work
Doing several joints on one visit usually makes better use of the time than several visits, so tell us about everything that needs sealing. You will get one clear quote for the whole job.
Asking for a quote
What to tell us when you ask for a quote:
- Roughly how big the job is
- Any previous sealing or DIY work
- The problem you’ve noticed
- Any access issues, like height or stairs
We quote each job on its own, so start by telling us what you need. Just call 0345 464 0079 or send us an email with the details and send pictures if you have them.
What happens on the day
You do not need to clear the whole room or building, just the space around the work. Everything nearby is protected, and the job takes anything from a few hours to a full day, depending on how many windows in most cases. In North Hyde, as in most of London, parking needs a little planning. A visitor permit or a nearby bay makes the visit run more smoothly.
- First we agree which joints need doing.
- 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.
Getting ready for the visit
- Clear the area around the work
- Let us know about stairs, lifts or work at height
- Keep children and pets away from the work area
Get a quote
We don’t publish a price list. Instead, we give you a clear quote for your job. To get started, phone 0345 464 0079 or drop us an email.
Read more
Different surfaces, different methods
Sash and case windows
Sash windows are where we do most sand mastic work. Each joint round the box is raked out and renewed.
Brick reveals
Loose mastic comes out and deep gaps are packed before the new mastic goes in.
Aftercare tips
So the new joints stay in good condition:
- Ask the planning authority about consent for listed or conservation-area homes
- Don’t paint over the new mastic
- Go gently near the mastic when preparing windows
- Look over the window mastic once a year
Keep paint scrapers and sanders off the mastic when redecorating. It can be damaged by heavy scraping.
Renewing mastic before redecorating saves doing it twice. Painting over failed mastic hides the problem for a while.