West Sussex · England
Boxgrove Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Boxgrove, backed by a one-year guarantee. Ask us for a quote.
- Gaps where the frame meets the masonry
- Failed mastic on an exposed elevation
- Patchy fillers round a sash window
How we handle sand mastic in Boxgrove
Traditional burnt sand mastic blends with stone and brick surrounds. It’s a good fit for period properties, where modern sealant can look out of place. Typical jobs include draughty sash windows at the surround and old cement repairs round a window that have failed, across sash and case windows, period & listed homes and brick reveals.
In a village or hamlet like Boxgrove, older cottages and farmhouses often have timber windows set in stone or brick. Not every older frame suits a modern silicone bead, so the sealant has to be chosen to suit the building.
Each job carries a 12-month guarantee, whatever its size.
- Place
- Boxgrove (PO18)
- Region
- West Sussex
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Different surfaces, different methods
Brick reveals
Sand mastic is also used where timber frames meet brick. It suits older brickwork.
Sash and case windows
The box of a sash and case window sits in the stone or brick opening. The gap round it is pointed with sand mastic.
What we do, step by step
We bring everything the job needs with us, so you do not need to buy or prepare anything. Once we’ve agreed what’s being done, we protect the area and start. Most jobs take anything from a few hours to a full day, depending on how many windows. Somewhere like Boxgrove 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.
- We check the window surrounds and agree which joints need renewing.
- We rake out the old mastic and clean the joint.
- Large voids are packed out first, so the mastic is not 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.
Preparing for the visit
- Keep pets and children clear of the area while we work
- Tell us about access, such as stairs, a lift or high-level joints
- For indoor joints, keep the area dry beforehand if you can
How to get a quote
For sand mastic in Boxgrove, phone 0345 464 0079 or send us an email. Tell us what the problem is and where, and you’ll get a clear quote before any work starts.
Advice
Honest limits
We will not take on work that won’t last, so here’s what sealant can’t put right:
- Broken panes
- Whether work needs listed building consent
- Damaged stone surrounds
If in doubt, phone 0345 464 0079 or email us and we’ll say what we think.
Surfaces we seal
- Brick reveals
- Stone surrounds
- Sash and case windows
- Tenement windows
- Period & listed homes
- Timber door frames
Also near Boxgrove
Other services in Boxgrove
How we quote for sand mastic
There’s no set price list, because jobs vary so much. The quote depends on:
- Working hours on commercial sites
- The type of sealant required
- The number and length of the joints
- Any mould that needs treating
Combining jobs into one visit is generally more efficient than separate visits, so tell us about everything that needs sealing. You will get one clear quote for the whole job.
What we need to know
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- Any access issues, like height or stairs
- Where the property is
- The rough size of the job
- A few pictures by email, if you can
Asking for a quote is easy: let us know the job and the location, and roughly how big it is. A few pictures by email make the job easier to understand.
Common questions in Boxgrove
Can you help a landlord with a rental near Chichester station?
Yes, landlords and agents are among the people we work for. Just ring 0345 464 0079 or send us an email with the address and what needs doing, and we’ll give you a clear quote.
Do you cover smaller places like Boxgrove?
Yes, smaller places are covered as well as towns. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
How long will you be here?
Most jobs take anything from a few hours to a full day, depending on how many windows, including preparation and clearing up. We’ll confirm how long when we quote.
Is it worth trying it myself?
Some simple jobs can be done by a careful DIYer. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Is it messy?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
Will there be a smell?
Sometimes, a little. It fades as the sealant cures, and ventilation helps.
Is sand mastic better than silicone for my windows?
We will talk it through with you. Sand mastic suits many period homes and newer frames suit modern sealant.
Do you remove the old sealant?
Yes. All of the old material is cut out and the joint cleaned before applying anything new.
Should I try it myself first?
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
Sand mastic in Boxgrove: local notes
With historic houses such as Goodwood House (about 1.5 miles north-west) nearby, there’s older building stock in the area around Boxgrove 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. 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.
Homes close to The Priory Church of St Mary and St Blaize include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. If you look after a building such as Boxgrove CofE Primary School, the mastic around its windows and doors needs looking after like any other building’s.
Boxgrove is about 3 miles north-east of Chichester, in West Sussex. Across the PO18 area, we cover sand mastic for homes and businesses. We cover 371 towns and villages across West Sussex. Our Portsmouth page covers work nearby (16 miles or so).
Every address in PO18 is covered for sand mastic. If you need sand mastic at a property on The Street, Priory Close and Kirkby Close or a nearby road, we can help. Close by, we work in Halnaker (1 mile north), Tangmere (1 mile south), Strettington (1 mile west), Waterbeach (1 mile north-west) and Westerton (1 mile west). Within a short drive, we also cover Worthing (14 miles east), Bognor Regis (5 miles south), Chichester (3 miles south-west), Selsey (9 miles south), Littlehampton (9 miles east) and Emsworth (10 miles west).
What’s near Boxgrove
In Boxgrove, that means homes and buildings near Ormiston Six Villages Academy and The Winterton Arms Public House and the streets around them. The nearest railway station is Chichester station, roughly 3.5 miles south-west. Other landmarks nearby include Chichester Centre (2.7 miles west) and Tote Copse Castle (1.9 miles south-east). Not far away are Levin Down.
Why act early in Boxgrove
A silicone bead can be quicker, but it can look wrong on a period surround. Sand mastic is the traditional material and blends with the stone or brick. Where a wall is exposed, as many are in small places like Boxgrove, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all play a part, and we’ll explain the quote if you ask.
What you get with us
- Every job guaranteed for a year
- 180+ five-star Google reviews
- More than 20 years in sealant work
- We never seal over old sealant
Take a look at how sealant jobs are priced and customer reviews.
Common problems we fix in Boxgrove
Timber frames move with the seasons. The movement cracks the mastic over time.
Look out for any of the following:
- Window mastic to renew ahead of painting
- Modern sealant on a period surround
- Old cement repairs round a window that have failed
- Gaps where the frame meets the masonry
If you let a flat or house near Chichester station, any sash windows need sound mastic to keep draughts and rain out.
Before booking anyone
- Whether they’re fully insured
- How long to leave it before use
- Whether all the old sealant comes out first
- Whether you can choose the colour