Hampshire · England
Wildhern Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Wildhern, backed by a one-year guarantee. Ask us for a quote.
- Mastic worn away on windows facing the weather
- Tired mastic found when preparing windows for paint
- Modern sealant on a period surround
Wildhern: your questions answered
Do you work for landlords with property near Andover station?
Yes, rental work is part of what we do. You can ring 0345 464 0079 or send us an email with the address and a few details, and we’ll give you a fixed price before any work starts.
Do you cover smaller places like Wildhern?
Yes, Wildhern is covered. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
When will the new mastic be hard?
A skin forms quite soon, but full hardening takes longer. We will explain what to expect before we leave.
Can you quote for more than one area?
Yes, we can. Several rooms, windows or areas can go on one quote.
Is it possible to take out silicone and use sand mastic instead?
Yes, we do this often. The old silicone has to come out completely so the mastic beds in well.
Do you guarantee sand mastic work?
There’s a 12-month guarantee on every job.
Is consent needed for window work on a listed home?
Checking first is sensible. Ask your local planning authority whether consent is needed for work on a listed home or in a conservation area.
Do the sealants smell?
Some sealants have a smell while they cure. Opening a window helps.
Sand mastic in Wildhern, done properly
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 period homes, it looks right where silicone wouldn’t. We work on tenement windows, period & listed homes and sash and case windows, and the jobs we see most are draughty sash windows at the surround and mastic dropping out of the joint.
Homes in small places like Wildhern often stand in the open, with little to shelter their windows from wind and rain. That exposure dries out and cracks the mastic around frames and sills faster.
The work is covered for a year after we finish. If anything is not right with it, ring 0345 464 0079 or email us.
- Location
- Wildhern (SP11)
- Region
- Hampshire
- Guarantee
- A year, on every job
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
What the job involves on each surface
Sash and case windows
A sash window’s box frame sits in the masonry opening. The gap round it is pointed with sand mastic.
Brick reveals
Sand mastic is also used where timber frames meet brick. It gives a traditional finish.
DIY versus a professional finish
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly, so just mention it when you contact us.
Sealing over old silicone is the commonest DIY error. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.
Landlords, agents and businesses in Wildhern
We also work for property managers and facilities teams in Wildhern and across Hampshire. We can quote a run of properties together, and we’re fully insured.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. Several properties can be quoted together.
Why act early in Wildhern
Silicone might seem the quicker option, but on period stone or brick it often looks out of place. Sand mastic is the traditional material and finishes neatly against the masonry. In a small place like Wildhern, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
A few things move the cost up or down: the old material and how easily it comes out, whether mould needs treating, and whether the work is at height. We take all of that into account in your quote.
Why Wildhern clients choose us
- Any old sealant cut out fully, not covered over
- We are fully insured
- Trusted Arbo and Everbuild sealants
- Over 20 years’ experience
Windows and doors in Wildhern
London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For landlords with property near Andover station, older sash windows in a rental need their mastic kept sound to keep the weather out. If you look after a building such as Hatherden Church of England Primary School, its window and door frames need their mastic kept sound, just like a home’s. If you live in an older home near Christchurch, the joint between an old wall and a newer frame is normally the first place rain gets in.
Wildhern is about 3 miles north of Andover, in Hampshire. Jobs in Wildhern get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. Across Hampshire, we cover 683 places, and Wildhern is one of them. You can also see our page for Southampton, roughly 24 miles from Wildhern.
We cover every part of SP11 for sand mastic and the streets around it. We also cover the places around Wildhern: Upper Enham (1 mile south-east), Enham Alamein (1 mile south-east), Little London (2 miles east), Knights Enham (2 miles south-east) and Smannell (2 miles south-east). Within a short drive, we also cover Andover (3 miles south), Hyde (15 miles south-east), Tidworth (7 miles west), Weeke (15 miles south-east), Kempshott (15 miles east) and Ludgershall (5 miles west).
Around Wildhern
Locally, jobs take us to homes and businesses close to The Hare & Hounds pub, among other places. Wildhern’s nearest station is Andover station, roughly 3.1 miles south of the centre. Nearby you’ll also find Finkley Down Farm Museum (3.1 miles south-east) and Andover War Memorial Hospital (2.8 miles south). Open spaces near Wildhern include Anton Lakes and Mill Lake.
How we quote for sand mastic
The price is agreed before any work begins. It takes into account:
- Any working-time requirements on site
- The type of sealant required
- The size of the job
- Access and height
What it costs depends on the size of the job, how hard the old material is to remove and access to the work. We give a clear quote before any work starts.
Helping us quote
Photos by email are helpful but not essential. Try to tell us:
- Pictures of the joints, sent by email
- The problem you’ve noticed
- The address or postcode of the job
- Any previous sealing or DIY work
To get a quote, ring 0345 464 0079 or drop us an email and tell us where the job is and what the problem looks like. You’ll have a clear quote before any work starts.
How to look after the new joints
No joint lasts for ever, but care makes a real difference. A few tips:
- Leave the new mastic unpainted
- Check the mastic when you check the paintwork
- Do not run silicone over sand mastic
- Take care around the mastic when scraping paint
Look at the mastic when you look over the windows. Catching cracks early keeps repairs small.
Sound mastic protects the frame. Failed mastic lets water reach the timber and timber that stays wet can rot.
Towns and villages near Wildhern
What else we do in Wildhern
How the visit works
There isn’t much for you to do on the day. Show us the job and we will take it from there. The work itself takes a few hours for a single window, longer for several. For a village or hamlet like Wildhern, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- We look at the surrounds with you and agree the joints to renew.
- We remove the old, loose mastic.
- 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.
How to prepare
- Mention any tricky access
- Let us know if you’ve seen damp or leaks
- For indoor joints, keep the area dry beforehand if you can
Ask for a quote
For a quick quote, get us on the phone, or email us if that’s easier. Describe what needs sealing and we’ll talk you through the work before giving you a price.