West Sussex · England
Selsey Sand Mastic
Sand mastic for Selsey and the surrounding area: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Old cement repairs round a window that have failed
- Window mastic to renew ahead of painting
- Gaps where the frame meets the masonry
DIY versus a professional finish
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
How we handle sand mastic in Selsey
Traditional burnt sand mastic blends with stone and brick surrounds. It suits period and listed homes where a modern sealant bead would stand out. We work on stone surrounds, period & listed homes and timber door frames, and the jobs we see most are mastic dropping out of the joint and mastic worn away on windows facing the weather.
Plenty of homes in a town like Selsey have had conservatories, patio doors or new windows added over the years. Every addition brings more joints, each wearing at its own pace. Sills, frame heads and glazing joints are where leaks generally start.
You are covered for a year from the day we finish. If anything is not right with it, call 0345 464 0079 or drop us an email.
- Place
- Selsey (PO20)
- Wider area
- West Sussex
- Guarantee
- 12 months on all our work
- Quote
- A clear price before work begins
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Towns and villages near Selsey
Other services in Selsey
Leave it or put it right?
Cement-based fillers and modern sealants do not always suit a period surround. Sand mastic is the like-for-like choice, which can matter on listed and conservation-area homes. Draughts from a gap round a frame, damp under a sill or water behind a bath panel all start small, and early is when they’re cheapest and quickest to sort.
A few things move the cost up or down: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether we need extra access for height. Your quote takes all of that into account.
Why Selsey customers choose us
- One-year guarantee on every job
- Old sealant always removed completely
- More than 20 years in sealant work
- We leave the area clean and tidy
How the job changes by 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.
Period and listed homes
A traditional finish suits a period property.
When to call us in Selsey
Shallow joints are a common cause. A thin layer doesn’t hold well, which is why we pack deep voids first and get the depth right.
Signs it’s time to call us include:
- Wind and rain getting in round a sash window
- Patchy fillers round a sash window
- Mastic dropping out of the joint
- Mastic round period door frames that has failed
Schools such as Seal Primary Academy are buildings too, and its window and door frames need their mastic kept sound, just like a home’s.
What to look for in a quote
- Whether all the old sealant comes out first
- Which sealant they’ll use, and why
- What insurance they hold
- What guarantee comes with the work
Quotes for sand mastic in Selsey
Some jobs are bigger than they look, and some smaller. The main factors:
- How many areas need sealing
- Working hours on commercial sites
- The amount of work
- Access and height
There are no prices on our website, because the cost depends so much on the job itself. For a quick quote, please call 0345 464 0079 or send us an email.
What to tell us for a quote
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- Whether it’s a home or a business
- The rough size of the job
- Whether it has been sealed before
- A few pictures by email, if you can
Every job is quoted individually, so start by telling us what you need. Simply phone 0345 464 0079 or email us and describe the job and send pictures if you have them.
When something else is needed
Sealant is not the answer to every problem, and we will tell you before work begins. Sealant will not put right:
- Decayed frames that need repair
- Sash cords, weights and draught-proofing of the sashes
- Crumbling stone or brickwork round the window
If you’re not sure, just ring 0345 464 0079 or send us an email and we’ll give you a straight answer before you book.
Where we work in Selsey
- Timber door frames
- Period & listed homes
- Brick reveals
- Stone surrounds
- Tenement windows
- Sash and case windows
The process
We bring everything the job needs with us. After a quick look at the joints together, we protect the area and start. It normally takes a few hours for a single window, longer for several. For a job in Selsey, we need access to where the work is and somewhere nearby to park. For outside work, let us know about side access, gates and any upper-floor joints.
- Each surround is checked first.
- The joint is raked out and cleaned.
- We fill deep gaps so the new mastic is not too thick.
- New sand mastic is applied and shaped by hand.
- We finish the mastic to a tidy line.
Getting ready for the visit
- Clear the area around the work
- Where the joints are inside, avoid wetting them before we arrive
- Let us know about parking restrictions
Ask for a quote
Asking for a quote is easy: tell us what needs doing and where and its rough size. A few photos by email make the job easier to understand, and we’ll take it from there.
Advice
Sand mastic in Selsey: local notes
Selsey is within about 1 mile of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That is hard on the mastic around older windows and doors, especially on the side facing the sea. 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.
If you live in an older home near St Peter's Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Selsey is about 6 miles south-west of Bognor Regis, in West Sussex. Selsey gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a 12-month guarantee. Across West Sussex, we cover 371 places, Selsey among them. Our Portsmouth page covers work nearby, about 14 miles away.
All of PO20 is within our area for sand mastic, from the main roads to the quietest streets. Sand mastic is available to properties on Church Road, High Street and Ellis Square. With the B2145 close by, Selsey is simple for us to get to for sand mastic. Neighbouring places we cover for sand mastic include Church Norton (1 mile north-east), Keynor Estate (2 miles north), Sidlesham (3 miles north), Pagham (3 miles north-east) and Street End (4 miles north). We also work in nearby towns such as Bognor Regis (6 miles north-east), Chichester (7 miles north), Littlehampton (12 miles north-east), Emsworth (10 miles north-west), Rustington (13 miles north-east) and Angmering (15 miles north-east). Selsey is among the bigger towns we cover in West Sussex.
What’s near Selsey
In Selsey, that means homes and buildings near The Academy, The Fisherman's Joy Public House and The Academy. Well-known places in the area include Selsey Lifeboat Museum (0.5 miles south-east).
FAQs for Selsey
What guarantee comes with sand mastic in Selsey?
Every job comes with our 12-month guarantee, wherever it is. We are also fully insured and ARBOMaster approved.
Can you do sand mastic in Selsey?
Yes. We work across London and the South East, and Selsey is part of that. You can call 0345 464 0079 or drop us an email and tell us what needs doing.
Will the old sealant be removed?
Yes, always, and completely. New sealant will not bond properly to old, so any old material comes out before anything new goes in.
Will there be a smell?
That depends on the sealant. Some smell for a while, some hardly at all.
Do you work for landlords and businesses?
Yes, regularly. We can quote for several properties at once, and between tenancies is a good time for the work.
Do I have to be there?
It depends on the job. Inside work needs someone to give us access.
Can old silicone round a sash window be swapped for sand mastic?
Yes, it’s a common request. The old silicone has to come out completely so the mastic can sit properly.
How long does sand mastic take to go off?
The surface skins quite quickly and it hardens fully over a longer time. Timing depends on the weather and the joint.