Southampton · England
Sand Mastic in Coxford
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in Coxford and across Southampton. Fully insured, ARBOMaster approved and guaranteed for a year.
- Mastic that needs renewing before redecorating
- Open joints round the window box
- Old cement repairs round a window that have failed
What we do, step by step
We bring everything the job needs with us, so there’s nothing for you to buy. Once we have 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. Parking around Coxford is usually easier than in a town centre, but mention any lanes, gates or long drives. For outside work, side access and the height of the joints help us plan.
- 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
- Mention if the joints have been sealed before
- Keep children and pets away from the work area
- Mention any parking rules near the property
Getting a quote
We quote each job on its own. Simply phone 0345 464 0079 or send us an email and describe the job, and photos are welcome.
Related advice
Sand mastic in Coxford
If your home is listed or in a conservation area, check with your local planning authority whether consent is needed for work to windows. Like-for-like sand mastic is often the preferred finish. We work on tenement windows, sash and case windows and period & listed homes, and the jobs we see most are wind and rain getting in round a sash window and old cement repairs round a window that have failed.
Around Coxford, conservatories, garden rooms and patio doors are often part of the house. Those joints need the same attention as the main windows.
Each job carries a 12-month guarantee, large or small.
- Place
- Coxford (SO16, SO15)
- Wider area
- Southampton
- Guarantee
- One year on every job
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Different surfaces, different methods
Stone surrounds
Stone openings are rarely perfectly straight, so the joint varies in width. We shape it by hand to follow the stone.
Timber door frames
Round a period front door, sand mastic gives the right look.
Work for landlords, hotels and businesses
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements.
Housing providers, facilities teams and property managers book us too in Coxford and across Southampton. Several sites can go on one quote, and we’re fully insured.
Sand mastic in Coxford: local notes
Coxford is within about 2 miles of the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. Both are hard on the mastic around older windows and doors, which can dry out and crack sooner where a building faces the weather. Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For an older house near a landmark such as St Jude's Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. Managing a site like Shirley Warren Primary & Nursery School? Then its window and door frames need their mastic kept sound, just like a home’s.
Coxford is about 2 miles north-west of Southampton, in Southampton. Homes, rented property, offices and hotels in Coxford can book us for sand mastic. The work is guaranteed for a year. Coxford is one of 40 places in Southampton where we work for sand mastic.
Jobs for sand mastic in SO16 and SO15 works the same way as everywhere else we cover. You’ll find streets such as Link Road, Palm Road and Vine Road. If you’re just outside Coxford, we cover Maybush (1 mile south-west), Lordswood (1 mile north-east), Shirley (1 mile south-east), Regents Park (1 mile south) and Hillyfields (1 mile west). Within a short drive, we also cover Townhill Park (4 miles east), Midanbury (3 miles east), Thornhill (5 miles east), Chartwell Green (4 miles east), Harefield (4 miles east) and Itchen (4 miles south-east).
Landmarks near Coxford
Typical jobs here are in homes near Bridge Tavern, St James' Park and Millbrook Community School, among other places. For rail, the closest station is Redbridge station, roughly 1.6 miles south-west of the centre. A little further out are Princess Anne Hospital (under half a mile east) and Foresters Museum & Archive (2 miles south-east). Green spaces nearby include Testwood Lakes.
Do you need sand mastic in Coxford?
Timber frames move with the seasons. That movement opens up the mastic joint little by little.
Any of these means the joints need attention:
- Modern sealant on a period surround
- Cracked mastic round a front door frame
- Old cement repairs round a window that have failed
- Tired mastic found when preparing windows for paint
Rented homes near Redbridge station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about.
Before booking anyone
- How long to leave it before use
- What guarantee comes with the work
- What the quote includes, VAT included or not
- What insurance they hold
Coxford questions
Will you come out to Coxford?
Yes. Coxford is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
I let a flat near Redbridge station. Can you help?
Yes, rental work is part of what we do. Just ring 0345 464 0079 or send us an email and tell us about the property, and we will give you a clear quote.
Where are you based?
We work from Crawley. Our applicators cover Coxford, along with the rest of our area.
Are you an approved applicator?
Yes. We’re an ARBOMaster approved applicator.
What do you put in the joint?
It depends on the joint: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. Brands we use include Arbo and Everbuild.
Does someone need to be in?
That depends on where the joints are. Inside work needs someone to give us access, while outside work can sometimes be arranged differently.
Can you quote for more than one area?
Of course. Doing several areas at once is generally more efficient, so mention them when you ask for a quote.
Can you replace silicone on a period window with sand mastic?
Yes, it’s a common request. All the old silicone is removed first so the mastic can sit properly.
Looking after it afterwards
Simple care keeps the joints in good condition. We recommend:
- Go gently near the mastic when preparing windows
- Leave the new mastic unpainted
- Look over the window mastic once a year
- Clear gutters so water doesn’t pour onto the windows
Keep paint scrapers and sanders off the mastic when redecorating. Hard scraping can loosen it.
Gaps round a sash box let in draughts and rain. Left, the gap tends to get bigger.
When it isn’t the sealant
Before booking, it’s worth knowing the limits:
- Planning or listed building consent (your local planning authority decides)
- Broken panes
- Damaged stone surrounds
If you’re not sure, just call 0345 464 0079 or email us and we’ll give you a straight answer before you book.
Where we work in Coxford
- Tenement windows
- Timber door frames
- Stone surrounds
- Brick reveals
- Sash and case windows
- Period & listed homes
What happens if it’s left?
A silicone bead can be quicker, but on period stone or brick it often looks out of place. Sand mastic is the traditional material and blends with the stone or brick. Around Coxford, water from a failed joint in an older home can soak into timber and plaster, and that is a much bigger job than renewing the sealant.
What it costs depends on the amount of work, how hard the old material is to remove and access to the work. You will have a clear quote before any work starts.
What you get with us
- Sanitary silicone with an anti-fungal additive in wet areas
- Tidy, careful work
- An ARBOMaster approved applicator
- One-year guarantee on every job
Read what affects the cost or our reviews.