Greater London · England
Sand mastic for sash & case windows in Hooley, Greater London
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in Hooley, with a one-year guarantee on every job. Call for a quick quote.
- Silicone on a period window that looks wrong
- Mastic round period door frames that has failed
- Mastic worn away on windows facing the weather
About our sand mastic in Hooley
We work across Hooley renewing sand mastic on sash windows and doors. Every joint is cleaned out and filled by hand for a neat, traditional finish. We work on stone surrounds, brick reveals and sash and case windows, and the jobs we see most are draughty sash windows at the surround and tired mastic found when preparing windows for paint.
London’s Victorian and Edwardian terraces were built with timber sash windows, and many still have them or their replacements. Whatever is in the opening now, the joint between frame and wall is what keeps the weather out.
A 12-month guarantee comes as standard.
- Location
- Hooley (CR5, RH1)
- Wider area
- Greater London
- Cover
- One year on every job
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Honest limits
To be straight with you, there are a few things sealant won’t fix:
- Decisions on consent for listed homes
- Sashes that rattle, stick or will not open
- Rotten sashes, sills or window boxes (a joiner’s job)
If in doubt, phone 0345 464 0079 or drop us an email and we’ll say what we think before you book.
What we seal
- Stone surrounds
- Brick reveals
- Sash and case windows
- Period & listed homes
- Tenement windows
- Timber door frames
Keeping the joints in good condition
Good habits help new joints last longer. Our tips:
- Make sure water runs off the sill
- Check the mastic when you check the paintwork
- Leave the new mastic unpainted
- Don’t run silicone over sand mastic
Avoid painting over the new mastic, which is the traditional advice. If you are redecorating, ask us first.
Crumbling mastic lets rain into the joint. It can soak into the frame and the surrounding masonry, so renewing it early is worth it.
Why it’s worth doing now in Hooley
Draughts round a sash window aren’t always the sashes. Open mastic joints round the box can let air in, and renewing the mastic closes them. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and by the time it shows on a wall or ceiling in Hooley, the repair is bigger than the sealant job would have been.
The cost depends on how much there is to do, how much old material has to come out and how easy the joints are to reach. We give a clear quote before work begins.
Why us?
- Quality sealants from Arbo and Everbuild
- Fully insured
- Sanitary silicone with an anti-fungal additive in wet areas
- Approved under the ARBOMaster scheme
Hooley questions
Can you help a landlord with a rental near Chipstead station?
Yes, rental work is part of what we do. Just ring 0345 464 0079 or drop us an email and tell us about the property, and we will send you a clear quote.
Is parking a problem for a job in Hooley?
London parking needs a little planning, so let us know about permits, bays or a driveway when you book. That way the visit can be planned around it.
Are you insured?
Yes. We’re fully insured, with over 20 years’ experience in sealant work.
Do I have to be there?
We need access to the joints, so we will agree that with you when we book. For inside work, that normally means someone being in.
Is consent needed for window work on a listed home?
It’s best to ask your local planning authority first. Sand mastic is often favoured as like for like, but they decide.
Can new sealant go over the old?
No. The old sealant always comes out first, so the new joint bonds to clean surfaces.
How long does sand mastic take to harden?
Not straight away. The skin forms first, and the full set comes later and we’ll give you an idea for your job.
Is it possible to take out silicone and use sand mastic instead?
In most cases. We remove the silicone and clean the joint, then point it with sand mastic.
Sand mastic in Hooley: local notes
In a converted house or block, who looks after the windows depends on the lease, so it’s worth checking before booking. London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
As a London address, Hooley can be tricky for parking: let us know about parking bays, permits or a driveway. Homes close to Church of St Margaret include some older properties, and the joint between an old wall and a newer frame is normally the first place rain gets in. Letting a property close to Chipstead station? Then older sash windows in a rental need their mastic kept sound to keep the weather out.
Hooley is about 2 miles south-west of Coulsdon, in Greater London. Every kind of property in Hooley can book us for sand mastic, old or new, large or small. Every job comes with our one-year guarantee. We cover 764 towns and villages across Greater London. You can also see our page for Crawley, about 13 miles away.
Our applicators cover all of the CR5 and RH1 postcode area for sand mastic and the streets around it. That includes homes and businesses on Church Lane Avenue, Church Lane Drive and Brighton Road and the roads around them. We also cover Netherne on-the-Hill (1 mile east), Merstham (2 miles south), Mugswell (2 miles south-west), Gatton (2 miles south) and South Merstham (2 miles south). Within a short drive, we also cover London (15 miles north), City of Westminster (15 miles north), Kensington (15 miles north), Brompton (14 miles north), Stockwell (12 miles north) and Orpington (13 miles north-east).
Landmarks near Hooley
Typical jobs here are in homes near The White Hart pub and Shabden Park and the streets around them. For rail, the closest station is Chipstead station, roughly 1.4 miles north-west. Well-known places in the area include East Surrey Museum (3.4 miles east) and St Lawrence's Hospital (2.5 miles east). Not far away are Colley Hill and South London Downs National Nature Reserve.
How we quote for sand mastic
The quote reflects the job in front of us. We look at:
- How many areas need sealing
- When we can work, for business premises
- The product the joint needs
- Whether the work is at height
A failed joint rarely gets cheaper to fix by waiting. If you’re not sure whether it needs doing, call 0345 464 0079 or send us an email and we will give you an honest view and a quote.
What we need to know
To help us quote quickly, please include:
- Whether it has been sealed before
- How we’d reach the joints
- The rough size of the job
- What’s wrong with the joints now
Every job is quoted individually, so the first step is telling us about yours. Just ring 0345 464 0079 or drop us an email with the details.
Work for landlords, hotels and businesses
Housing providers, facilities teams and property managers book us too in Hooley and across Greater London. We can quote a run of properties together, and we are fully insured for the work.
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance.
Towns and villages near Hooley
Other services in Hooley
How the visit works
On the day, we look over the joints with you first, so you know exactly what we are doing. Surfaces next to the work are protected before we start. The work usually takes a few hours for a single window, longer for several. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Hooley. A visitor permit or a nearby bay makes the visit run more smoothly.
- We check each window surround and the condition of the joint.
- The joint is raked out and cleaned.
- We fill deep gaps so the new mastic isn’t too thick.
- We point the joint with sand mastic by hand.
- We finish the mastic to a tidy line.
Before we arrive
- Let us know about parking restrictions
- Try not to wet indoor joints just before the visit
- Plan for the work area to be out of bounds to pets and children
Get a quote
Call for a quick quote, or email us if that’s easier. Describe what needs sealing and we’ll explain what’s involved and give you a clear price.
Related advice
What the job involves on each surface
Brick reveals
Loose mastic comes out and deep gaps are packed before pointing.
Stone surrounds
Sand mastic sits naturally against stone. The finish blends with the masonry.