Windsor and Maidenhead · England
Sand mastic for sash & case windows in Holloway, Windsor and Maidenhead
Sand mastic in Holloway from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Old sand mastic that has cracked, crumbled or fallen out
- A silicone bead on a sash window that spoils the look
- Failed mastic on an exposed elevation
Aftercare tips
Good habits help new joints last longer. A few tips:
- Get any rot dealt with first
- Avoid heavy scraping on the mastic joint
- Leave the new mastic unpainted
- Plan mastic work ahead of painting
Avoid sealing over the mastic with silicone. If you see a crack, ask us to take a look rather than patching it.
Renewing mastic before redecorating saves doing it twice. Paint over cracked mastic only covers it up.
Sand mastic in Holloway
Sand mastic skins over fairly quickly but full hardening takes longer. Traditional guidance is not to paint over it, so ask us before you decorate. We work on sash and case windows, stone surrounds and brick reveals, and common reasons people get in touch are patchy fillers round a sash window and old sand mastic that has cracked, crumbled or fallen out.
Somewhere as small as Holloway, older homes often have timber frames set in stone or brickwork. Not every older frame suits a modern silicone bead, and sometimes a traditional sand mastic is the better choice.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we’ll sort it.
- Location
- Holloway (SL6)
- Region
- Windsor and Maidenhead
- Cover
- 12 months on all our work
- Quote
- A clear price before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Nearby places to Holloway
Other services in Holloway
For landlords and businesses
If you manage several properties in or around Holloway, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs.
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we will give you a quote.
DIY versus a professional finish
If you’ve already had a go yourself, that is fine. We cut it out and start again, so just mention it when you contact us.
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
What we can’t put right
In fairness, some problems need a different trade:
- Sash cords, weights and draught-proofing of the sashes
- Decayed frames that need repair
- Masonry that needs repairing
If you are not sure, just phone 0345 464 0079 or email us and we’ll give you a straight answer.
Surfaces we seal
- Tenement windows
- Stone surrounds
- Sash and case windows
- Timber door frames
- Brick reveals
- Period & listed homes
Common questions in Holloway
Can you help a landlord with a rental near Furze Platt station?
Yes, rental work is part of what we do. Just call 0345 464 0079 or drop us an email and tell us about the property, and we’ll give you a clear price.
Is Holloway in your area for sand mastic?
Yes, Holloway is within the area we cover. We work across London and the South East. Just call 0345 464 0079 or email us with a few details of the job.
Can you match the sealant colour?
In most cases you can choose. We will tell you which colours the right product comes in and agree one before we start.
How long does sand mastic take to go off?
Not right away. It skins first and hardens fully later and we’ll give you an idea for your job.
Are you an approved applicator?
Yes. Mr Mastic is an ARBOMaster approved applicator.
Can you work on commercial sites?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. Working times can be discussed when we quote.
Do I need to be at home?
It depends on the job. Inside work needs someone to give us access.
Will you leave a mess?
Tidy work is part of the job. Nearby surfaces are protected, and we clear up when we are done.
What sand mastic looks like in Holloway
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. Historic houses like Harleyford Manor (about 2.7 miles north-west) are a reminder that the area around Holloway has older buildings as well as new. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic.
Rented homes near Furze Platt station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about. In the older streets around Saint John the Evangelist, the joint between an old wall and a newer frame is normally the first place rain gets in. Schools such as Burchetts Green CofE Infants' School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.
Holloway is about 2 miles west of Maidenhead, in Windsor and Maidenhead. Homes, rented property, offices and hotels in Holloway can book us for sand mastic. The work is guaranteed for a year. Our area takes in 57 places across Windsor and Maidenhead, large and small. For nearby work, see our Reading page (10 miles or so).
Work in SL6 works the same way as everywhere else we cover. Sand mastic is available to properties on Burchetts Green Lane and Bath Road and the roads around them. Close by, we work in Littlewick Green (1 mile south-west), Burchett's Green (1 mile north-west), Woolley Green (1 mile south-east), Stubbings (1 mile north-east) and Pinkneys Green (1 mile north-east). Further out, we also cover Windsor (7 miles south-east), North Ascot (8 miles south-east), Cookham (4 miles north-east), Dedworth (7 miles south-east), Broomhall (11 miles south-east) and South Ascot (10 miles south-east).
Local landmarks in Holloway
Typical jobs here are in homes near The Shire Horse pub, Newlands Girls' School and Manor Green School and the streets around them. The closest station to Holloway is Furze Platt station, about 2.7 miles north-east of the centre. Nearby you will also find St Mark's Hospital (1.8 miles east) and Marlow Museum (3.5 miles north). Not far away are Taplow Lake and Weycock Hill.
What the job involves on each surface
Period and listed homes
A traditional finish suits a period property, and sand mastic is one of them.
Tenement and terrace windows
Where a building is shared, window work may involve neighbours so it’s worth checking responsibilities.
How it works
The work is kept neat and contained to the joints we’re treating, so you can carry on as normal. Expect the work to take anything from a few hours to a full day, depending on how many windows. In a small place like Holloway, access is generally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- 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.
- The finish is dressed neatly.
Preparing for the visit
- Mention any leaks or damp you’ve noticed
- Clear items away from the joints we’re working on
- Where the joints are inside, avoid wetting them before we arrive
Getting a quote
Want a quote for sand mastic? Please phone 0345 464 0079 or email us with a few details. We’ll explain what we’d do and give you a clear price before we start.
Advice
What affects the quote in Holloway
There’s no set price list. What we look at:
- How much old sealant there is and how hard it is to remove
- The type of sealant required
- Whether the work is at height
- The number and length of the joints
Rather than a set price list, we look at what your job involves: the amount of work, the old material and the access. You’ll know the price before we begin.
What we need to know
To help us quote quickly, please include:
- How many joints, rooms or windows are involved
- A few photos by email, if you can
- Any previous sealing or DIY work
- The problem you’ve noticed
Quotes start with a quick conversation. Describe the problem, the location and the size of the job. Whenever you are ready, call 0345 464 0079 or send us an email.