Hampshire · England
Sand mastic for sash & case windows in Botley, Hampshire
Professional sand mastic in and around Botley, with every bit of old sealant taken out first.
- Mastic round period door frames that has failed
- Wind and rain getting in round a sash window
- Crumbling sand mastic round a window
How to look after the new joints
A little care helps the new joints last. We recommend:
- Take care around the mastic when scraping paint
- Ask us before painting near the mastic
- Keep modern sealant off the mastic
- Check the mastic when you check the paintwork
Don’t touch or press the mastic while it hardens. It skins over quickly, but takes longer to harden fully.
Small cracks are a sign the mastic is ageing. Renewing it then is simpler than waiting until it falls out.
How we handle sand mastic in Botley
A silicone bead around a sash window can look out of place and is not always the right material. Sand mastic is the traditional choice and we can swap the silicone for it. If you’re dealing with cracked mastic round a front door frame and cement or filler used on old window joints that has cracked, we can put it right.
In smaller places like Botley, homes range from older cottages to newer houses, with windows to match: timber, uPVC and aluminium. Each frame material needs the right sealant against the right wall.
Every job comes with a one-year guarantee.
- Place
- Botley (SO30)
- Wider area
- Hampshire
- Cover
- 12 months on all our work
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
What we can’t put right
Honest advice matters more to us than a booking, so here’s what new sealant will not do:
- Decisions on consent for listed homes
- Putty and glazing repairs
- Rotten sashes, sills or window boxes (a joiner’s job)
Not sure which it is? You can ring 0345 464 0079 or send us an email and we’ll tell you honestly before you book.
What we seal
- Timber door frames
- Sash and case windows
- Brick reveals
- Stone surrounds
- Period & listed homes
- Tenement windows
How the job changes by surface
Brick reveals
Brick reveals round timber windows are often pointed with sand mastic. It suits older brickwork.
Stone surrounds
The stone is treated with care when the old mastic comes out.
Botley homes and the weather
With historic houses such as South Stoneham House (about 4.6 miles west) nearby, there’s older building stock in the area around Botley 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. London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For site and facilities teams at buildings such as Botley Church of England Controlled Primary School, its window and door frames need their mastic kept sound, just like a home’s. In the older streets around Church of All Saints, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Botley is about 1 mile east of Hedge End, in Hampshire. Every kind of property in Botley is covered for sand mastic, old or new, large or small. Every job comes with our 12-month guarantee. Our area takes in 683 places across Hampshire.
Work in SO30 works the same way as everywhere else we cover. Whether your property is on High Street, Boswell Close and Bailey Close or a nearby road, we can help. With the A334 close by, Botley is simple for us to get to. Other places close to Botley include Boorley Green (1 mile north), Curdridge (2 miles east), Curbridge (2 miles south-east), Durley (2 miles north) and Horton Heath (3 miles north). We also work in nearby towns such as Winchester (10 miles north), Gosport (9 miles south-east), Havant (13 miles east), Eastleigh (5 miles north-west), Fareham (6 miles south-east) and Horndean (12 miles east).
Landmarks near Botley
Typical jobs here are in homes near Wildern School, Wildern School and The Dolphin Hotel The Dolphin Public House. The closest station to Botley is Botley station, roughly 0.8 miles east. Other landmarks nearby include Moorgreen Hospital (2.2 miles north-west) and Netley Castle (4.4 miles south-west). Not far away are Swanwick Lakes.
Also in Botley
Why it’s worth doing now in Botley
A silicone bead can be quicker, but on period stone or brick it often looks out of place. Sand mastic suits the building and blends with the stone or brick. In a smaller place like Botley, wherever a wall is exposed, a failed outside joint is a real source of damp. Inside, a split seal lets water into floors and panels just as it would anywhere.
What you pay reflects the work, not a rough estimate. That’s why we ask a few questions first and give you a clear price before work begins.
Why us?
- Experience in homes, commercial sites and hotels
- Full insurance on every job
- A 12-month guarantee on all work
- Any old sealant cut out fully, not covered over
Read our cost guide and what customers say.
Common problems we fix in Botley
Decorating can disturb tired mastic. Many people find it crumbling when they prepare the windows, which is a good time to renew it.
These are the problems we’re asked about most:
- Old sand mastic that has cracked, crumbled or fallen out
- Mastic that needs renewing before redecorating
- Mastic worn away on windows facing the weather
- Modern sealant on a period surround
If you let a flat or house near Botley station, older sash windows in a rental need their mastic kept sound to keep the weather out.
What to look for in a quote
- How hidden problems are handled
- Which sealant they’ll use, and why
- Whether they’re fully insured
- Whether you can choose the colour
Work for landlords, hotels and businesses
Letting agents often deal with us directly. Tell us the address, the job and how access works.
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance that we can handle for you.
What we do, step by step
We bring everything the job needs with us, so you don’t need to buy or prepare anything. Once we’ve agreed what’s being done, the area is protected and the work begins. It normally takes a few hours per window, depending on the condition of the joints. For a job in Botley, we agree the time, the access and parking before the day. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- First, we look at the surrounds with you and agree what needs doing.
- Old, loose mastic is raked out and the joint cleaned.
- Large voids are packed out first, so the mastic isn’t too thick.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- The finish is dressed so it sits neatly against the stone or brick.
How to prepare
- Plan for the work area to be out of bounds to pets and children
- Clear items away from the joints we are working on
- Try not to wet indoor joints just before the visit
How to get a quote
For sand mastic in Botley, phone 0345 464 0079 or drop us an email. Tell us what the problem is and where, and we will agree the price before any work begins.
Advice
Botley: your questions answered
Can you help a landlord with a rental near Botley 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.
Do you cover Botley for sand mastic?
Yes, Botley is within the area we cover. We work across London and the South East. You can call 0345 464 0079 or send us an email and let us know what needs doing, and we’ll send you a clear quote.
What is sand mastic?
It’s the traditional filler for the joint round timber windows and doors. It combines sand with a linseed-oil-based binder.
Can I paint the new mastic?
The usual advice is to leave sand mastic unpainted. If you’re redecorating the window, ask us first and we’ll advise.
How long will you be here?
As a guide, most jobs take a few hours for a single window, longer for several. Larger jobs naturally take longer.
Can you do several jobs on one visit?
Yes. Several rooms, windows or areas can go on one quote.
Will the old sealant be removed?
Yes. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.
Can I do it myself?
You can, for simple jobs. Preparation is everything: all the old sealant out, and a clean, dry joint. We can always put it right if it fails.