Wokingham · England
Bowsey Hill Sand Mastic
Sand mastic for Bowsey Hill, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Gaps where the frame meets the masonry
- Draughty sash windows at the surround
- Window mastic to renew ahead of painting
Sand mastic for homes and businesses in Bowsey Hill
Sand mastic has long been used to fill the joint between timber frames and masonry. It’s made from sand and a linseed-oil-based binder and built up by hand. On older homes, it suits the building far better than silicone. If you’re dealing with a silicone bead on a sash window that spoils the look and crumbling sand mastic round a window, we can put it right, on sash and case windows, period & listed homes and tenement windows alike.
Around Bowsey Hill, many homes face open ground, so their windows and doors take the full weather. Exposed frames and sills lose their mastic sooner than sheltered ones.
The work is guaranteed for twelve months. If something isn’t right with it in that time, tell us and we’ll put it right.
- Where
- Bowsey Hill (RG10)
- Wider area
- Wokingham
- Cover
- A year, on every job
- Price
- A clear price before we start
- Call
- 0345 464 0079
- Updated
- 26 October 2026
The process
There’s no need to move everything out before we come, only the area right around the joints. Everything nearby is protected, and the job takes anything from a few hours to a full day, depending on how many windows for a typical job. Somewhere like Bowsey Hill needs a little journey planning: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- Each surround is checked first.
- The joint is raked out and cleaned.
- Large voids are packed out.
- New sand mastic is applied and shaped by hand.
- We finish the mastic to a tidy line.
How to prepare
- Tell us if parking is tricky
- Mention any tricky access
- Clear items away from the joints we’re working on
Get a quote
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is.
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Places near Bowsey Hill
More services for Bowsey Hill
Why deal with it now?
Draughts round a sash window are not always the sashes. Open mastic joints round the box can let air in, and renewing the mastic closes them. Older cottages and farmhouses around Bowsey Hill can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
A few things move the cost up or down: 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 Bowsey Hill
- More than 20 years in sealant work
- A 12-month guarantee on all work
- Any old sealant cut out fully, not covered over
- Sanitary silicone with an anti-fungal additive in wet areas
Take a look at our cost guide and customer reviews.
Bowsey Hill: your questions answered
Can you do sand mastic in Bowsey Hill?
Yes. We work across London and the South East, and Bowsey Hill is part of that. You can ring 0345 464 0079 or email us and tell us what needs doing, and we will give you a clear quote.
Is Bowsey Hill within the area you cover?
Yes, Bowsey Hill is covered. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Will there be a smell?
There can be a smell while the sealant cures, which fades as it sets. Opening a window helps.
How do I get a quote for sand mastic in Bowsey Hill?
There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. We agree the price before any work begins.
Is consent needed for window work on a listed home?
Yes, it’s worth checking. Your local planning authority can say if consent is needed for work on a listed home or in a conservation area.
Can I add another job to the visit?
Yes. More than one area can be quoted together.
Do I need to be at home?
If the work is inside, we need someone to let us in. Once we’ve agreed the job, you do not need to watch us work.
Is it messy?
We keep the work tidy. We protect what’s around the joints, and the area is left clean when we finish.
Landlord and commercial work in Bowsey Hill
Hotels need rooms back in use, so the work can be planned room by room around your bookings where we can. We’ve worked in hotels as well as homes and businesses.
We regularly work with letting and managing agents. Tell us the address, the job and how access works.
Signs you need sand mastic in Bowsey Hill
Scraping and sanding before painting can loosen old mastic. Many people find it crumbling when they prepare the windows.
These are the problems we are asked about most:
- Gaps between timber frames and stone or brick
- Mastic round period door frames that has failed
- Old sand mastic that has cracked, crumbled or fallen out
- Cement or filler used on old window joints that has cracked
For an older house near a landmark such as St Paul's Mission Church, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Comparing quotes
- How the joint is cleaned and prepared
- Whether the sealant suits the joint
- Which colour the sealant will be
- Whether VAT is included
What sealant work can’t fix
We won’t take on work that won’t last, so these are the limits:
- Cracked or broken glass
- Decisions on consent for listed homes
- Sashes that need overhauling
If you are not sure, just call 0345 464 0079 or send us an email and we’ll give you a straight answer.
What we seal
- Brick reveals
- Tenement windows
- Sash and case windows
- Timber door frames
- Period & listed homes
- Stone surrounds
How to look after the new joints
Looking after new joints is easy, and it makes a real difference:
- Look over the window mastic once a year
- Leave the new mastic unpainted
- Plan mastic work ahead of painting
- Clear gutters so water doesn’t pour onto the windows
Look at the mastic when you look over the windows. Small cracks are easier to deal with early.
Small cracks are a sign the mastic is ageing. It’s easier to renew it before it drops out.
What sand mastic looks like in Bowsey Hill
Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. With historic houses such as Harleyford Manor (about 3.3 miles north-east) nearby, there’s older building stock in the area around Bowsey Hill as well as newer homes. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
For site and facilities teams at buildings such as Crazies Hill CofE Primary School, larger buildings have plenty of frames, and the mastic around each one ages. Rented homes near Wargrave station change hands often, and older sash windows in a rental need their mastic kept sound to keep the weather out.
Bowsey Hill is about 3 miles south-east of Henley-on-Thames, in Wokingham. Wherever you are in the RG10 postcode area, we can carry out sand mastic at your property. Bowsey Hill is one of 35 towns and villages in Wokingham where we work. You can also see our page for Reading, about 7 miles away.
Postcode districts we cover here for sand mastic: RG10. We also cover Warren Row (1 mile north-east), Knowl Hill (1 mile east), Wargrave (1 mile south-west), Cockpole Green (1 mile north-west) and Cold Harbour (2 miles east). We also work in nearby towns such as Reading (7 miles south-west), Wokingham (7 miles south), Woodley (5 miles south-west), Earley (7 miles south-west), Crowthorne (10 miles south) and Lower Earley (7 miles south-west).
Around Bowsey Hill
In Bowsey Hill, that means homes and buildings near Blessed Hugh Faringdon Catholic School and The Queen Victoria pub. For rail, the closest station is Wargrave station, about 1.8 miles south-west. Nearby you’ll also find St Mark's Hospital (4.2 miles east) and Frazer Nash Archives (2.7 miles north-west). The countryside around Bowsey Hill includes Hurley Chalk Pit and Weycock Hill.
DIY versus a professional finish
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it doesn’t work out, we can still put it right.