Hampshire · England
Sand mastic for sash & case windows in Rotherwick, Hampshire
Sand mastic across Rotherwick and nearby, with every bit of old sealant taken out first.
- Gaps where the frame meets the masonry
- Failed mastic on an exposed elevation
- Mastic round period door frames that has failed
What the job involves on each surface
Stone surrounds
Stone openings are rarely perfectly straight, so the gap isn’t the same all the way round. Sand mastic is shaped by hand to suit.
Tenement and terrace windows
Upper-floor windows need access planning. Tell us the height and we will confirm what’s needed.
About our sand mastic in Rotherwick
Sand mastic is the traditional way to point the gap between a timber window frame and the stone or brick around it. It’s made from sand and a linseed-oil-based binder, applied by hand. On period homes, it looks right where silicone wouldn’t. Typical jobs include cement or filler used on old window joints that has cracked and tired mastic found when preparing windows for paint, across period & listed homes, timber door frames and stone surrounds.
Outdoor sealant needs dry, clean surfaces, so work on frames around Rotherwick is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
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
- Rotherwick (RG27)
- Wider area
- Hampshire
- Guarantee
- One year on every job
- Price
- A clear price before we start
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Common questions in Rotherwick
I let a flat near Hook station. Can you help?
Yes. We work for landlords and letting agents as well as householders, and several properties can be quoted together. Just phone 0345 464 0079 or send us an email with the address and what needs doing, and we will give you a clear quote.
Is Rotherwick within the area you cover?
Yes, we do. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Do you take out the old sealant first?
Always. Sealing over the old bead is the commonest cause of early failure, so we never do it.
Do you guarantee sand mastic work?
Every job comes with our one-year guarantee.
Should I try DIY first?
That depends on the joint. High-level, external movement and fire-rated joints are professional jobs.
Can you seal over the old sealant?
No. Fresh sealant does not stick to old sealant, and it traps any mould or water underneath. We remove it all first.
Do you work for hotels and businesses?
Yes, regularly. We can plan bigger jobs in stages to suit the site.
Can old silicone round a sash window be swapped for sand mastic?
Often, yes. Once the silicone is out and the joint prepared, sand mastic is applied by hand.
Rotherwick homes and the weather
Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. With historic houses such as Stratfield Saye House (about 3.2 miles north) nearby, there’s older building stock in the area around Rotherwick as well as newer homes. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.
Letting a property close to Hook station? Then any sash windows need sound mastic to keep draughts and rain out. Homes close to Rotherwick Church include some older properties, and the joint between an old wall and a newer frame is usually the first place rain gets in.
Rotherwick is about 6 miles west of Fleet, in Hampshire. Whether you are in the middle of Rotherwick or further out, sand mastic is available for homes and businesses alike, from flats and houses to offices and hotels. Across Hampshire, we cover 683 places, and Rotherwick is one of them. We also work in Reading, about 10 miles from Rotherwick.
We cover every part of RG27 for sand mastic. Local streets include The Street, Wedman's Lane and Hook Road. We also cover the places around Rotherwick: Lyde Green (1 mile north-west), Mattingley (1 mile north-east), Hound Green (2 miles north-east), Hazeley (2 miles north-east) and Heckfield (3 miles north). We also work in nearby towns such as Basingstoke (6 miles south-west), Farnborough (9 miles east), Fleet (6 miles east), Aldershot (10 miles south-east), Alton (11 miles south) and Yateley (6 miles east).
Around Rotherwick
Around Rotherwick, our work takes us to homes and buildings near Coach And Horses Public House. The nearest railway station is Hook station, roughly 1.8 miles south. Nearby you’ll also find West Green House Agricultural Museum (1.8 miles east) and Fleet Community Hospital (5.5 miles east). Not far away are Dogmersfield Lake and The Mill Field.
What we do, step by step
Good joint work is mostly preparation, so that is where we spend the time. Every joint is cleaned and dried before new material goes in. In total, it usually takes anything from a few hours to a full day, depending on how many windows. Somewhere as small as Rotherwick, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- 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
- Tell us about access, such as stairs, a lift or high-level joints
- Clear items away from the joints we’re working on
- Try not to wet indoor joints just before the visit
Getting a quote
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is. Whenever you’re ready, call 0345 464 0079 or send us an email.
Related advice
What we’re called out for in Rotherwick
Previous repairs in cement or silicone often trap water or crack away. They do not move with the timber and we normally remove them.
Any of these means the joints need attention:
- Failed mastic on an exposed elevation
- Cracked mastic round a front door frame
- Window mastic to renew ahead of painting
- Old cement repairs round a window that have failed
If you look after a building such as Whitewater Church of England Primary School, its window and door frames need their mastic kept sound, just like a home’s.
Comparing quotes
- Who turns up on the day
- What the cure time is
- Which sealant they’ll use, and why
- Is the old sealant removed completely?
How we quote for sand mastic
For a quick quote, just ask. What matters most is:
- Mould in or behind the old joints
- Whether the work is at height
- The old material and how stubborn it is
- The product the joint needs
Commercial jobs are quoted on the same basis as homes: how much there is to do, how we reach it and what it needs. Ask us for a quote and we’ll go through it with you.
What to tell us for a quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- Access, such as stairs, a lift or height
- The rough size of the job
- Whether it’s a home or a business
- Photos by email, if that’s easy
For sand mastic in Rotherwick, call 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.
When something else is needed
A few problems are outside what sealant work can do:
- Cracked or broken glass
- Crumbling stone or brickwork round the window
- Timber that has rotted
Not sure which it is? You can call 0345 464 0079 or drop us an email and we will tell you honestly.
Surfaces we seal
- Sash and case windows
- Timber door frames
- Period & listed homes
- Brick reveals
- Tenement windows
- Stone surrounds
Places near Rotherwick
What else we do in Rotherwick
Keeping the joints in good condition
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Avoid heavy scraping on the mastic joint
- Plan mastic work ahead of painting
- Don’t paint over the new mastic
- Keep modern sealant off the mastic
When preparing windows for paint, take care around the mastic. It can be damaged by heavy scraping.
Once mastic starts to crumble, rain gets in. That water can reach the timber frame and the wall, so renewing it early is worth it.
Leave it or put it right?
New sash windows are a major, costly change and on a listed home, consent may be needed. Where the frames are in good order, new mastic seals the surround. In a small place like Rotherwick, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Rather than a set price list, we price the job in front of us: how many joints, what’s in them now and how we reach them. You’ll know the price before we begin.
Why book with us
- A 12-month guarantee on all work
- Tidy, careful work
- Any old sealant cut out fully, not covered over
- Full insurance on every job
Take a look at our cost guide or our reviews.