Hampshire · England
Sand Mastic in Selborne
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in Selborne, with a 12-month guarantee on every job. Ask us for a quote.
- Gaps where the frame meets the masonry
- Cement or filler used on old window joints that has cracked
- Cracked mastic round a front door frame
How the job changes by surface
Stone surrounds
The stone is treated with care when the old mastic comes out.
Sash and case windows
Sash windows are where we do most sand mastic work. Each joint round the box is raked out and renewed.
How we handle sand mastic in Selborne
Fresh sand mastic forms a skin quite soon but full hardening takes longer. Traditional guidance is not to paint over it and we’ll advise if you are redecorating. If you have wind and rain getting in round a sash window and tired mastic found when preparing windows for paint, we can help.
Around Selborne, 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.
All our work comes with our 12-month guarantee.
- Place
- Selborne (GU34)
- Region
- Hampshire
- Guarantee
- A year, on every job
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Selborne homes and the weather
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
In the older streets around Church of St Mary, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. If you let a flat or house near Alton station, any sash windows need sound mastic to keep draughts and rain out.
Selborne is about 4 miles south of Alton, in Hampshire. Wherever you are in the GU34 postcode area, our applicators can take on sand mastic. Our Hampshire coverage runs to 683 places, Selborne among them. There’s also a page for Portsmouth, roughly 21 miles from Selborne.
Jobs for sand mastic in GU34 is quoted and booked the same way as anywhere else. Sand mastic is available to properties on Huckers Lane, Ganders Close and Selborne Road. Neighbouring places we cover for sand mastic include Newton Valence (1 mile west), Empshott (2 miles south-east), Lower Green (3 miles south), Hawkley (3 miles south) and Oakshott (4 miles south). We also work in nearby towns such as Basingstoke (13 miles north-west), Fleet (13 miles north), Horndean (14 miles south), Aldershot (13 miles north-east), Alton (4 miles north) and Waterlooville (15 miles south).
Around Selborne
Locally, jobs take us to homes and businesses close to The Jubilee Tap, among other places. The closest station to Selborne is Alton station, about 3.8 miles north of the centre. Other landmarks nearby include The Romany Museum (under half a mile south-east) and Alton Community Hospital (3.5 miles north-west). Green spaces nearby include Selborne Hill and Deadwater Valley.
FAQs for Selborne
Do you cover Selborne for sand mastic?
Yes, Selborne is within the area we cover. We work across London and the South East. Just call 0345 464 0079 or drop us an email with a few details of the job, and we’ll give you a clear quote.
Will you come out to Selborne?
Yes, Selborne is covered. Our work covers London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
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.
I’m a tenant. Can you help?
We’re happy to deal with the tenant, landlord or agent. Get your landlord’s agreement first.
What does sand mastic cost?
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.
What do you need from me for a quote?
Only a few details: where it is, what you’ve noticed and how we reach it. Then call 0345 464 0079 or drop us an email.
Can I add another job to the visit?
Yes, we can. Several rooms, windows or areas can go on one quote.
How long does sand mastic take?
Typically it takes anything from a few hours to a full day, depending on how many windows. Larger jobs naturally take longer.
What affects the cost of sand mastic
The quote reflects the job in front of us. We take into account:
- How much there is to do
- How easy the joints are to reach
- How many areas need sealing
- How much old sealant there is and how hard it is to remove
Combining jobs into one visit normally makes better use of the time than several visits. You will get one clear quote for the whole job.
Helping us quote
When you call or email, these details help:
- The type of property
- Pictures of the joints, sent by email
- Any previous sealing or DIY work
- The rough size of the job
We do not publish a price list, as no two jobs are quite the same. Instead, we give you a clear quote for your job. To get started, call 0345 464 0079 or send us an email.
Nearby places to Selborne
What else we do in Selborne
How it works
Good joint work is mostly preparation, and we do not rush it. Joints are cleaned back and dried before anything new goes in. All told, the work takes a few hours for a single window, longer for several. In a small place like Selborne, access is generally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- Each surround is checked first.
- The joint is raked out and cleaned.
- We fill deep gaps so the new mastic is not too thick.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
Getting ready for the visit
- Tell us about access, such as stairs, a lift or high-level joints
- Tell us about any previous sealing or DIY attempts
- Let us know about parking restrictions
Getting a quote
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we’ll explain what’s involved before giving you a price.
Related advice
How to look after the new joints
Looking after new joints is easy:
- Ask the planning authority about consent for listed or conservation-area homes
- Clear gutters so water doesn’t pour onto the windows
- Avoid patching sand mastic with silicone
- Have rotten timber repaired before new mastic goes in
Make sure water drains away from the window surround. Constant wetting wears the mastic faster.
Once mastic starts to crumble, rain gets in. It can soak into the frame and the surrounding masonry so early renewal protects both.
What sealant work cannot fix
We won’t take on work that won’t last, so here’s what sealant can’t put right:
- Sashes that need overhauling
- Crumbling stone or brickwork round the window
- Putty and glazing repairs
If you are not sure, just phone 0345 464 0079 or drop us an email and we’ll give you a straight answer before booking.
What we seal
- Stone surrounds
- Tenement windows
- Brick reveals
- Sash and case windows
- Period & listed homes
- Timber door frames
When to call us in Selborne
Shallow joints are a common cause. A thin layer doesn’t hold well so we make sure the new mastic is the right thickness.
Most people get in touch after spotting something like this:
- Gaps round a timber door in stone or brick
- Patchy fillers round a sash window
- Failed mastic on an exposed elevation
- Mastic that needs renewing before redecorating
Schools such as Selborne Church of England Primary School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.
Comparing quotes
- Are they insured?
- Whether all the old sealant comes out first
- How long to leave it before use
- What the quote includes, VAT included or not
Can I do it myself?
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.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.