West Sussex · England
Sand mastic for sash & case windows in Kingston by Sea, West Sussex
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in Kingston by Sea and across West Sussex. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Mastic that needs renewing before redecorating
- Gaps round a timber door in stone or brick
- A silicone bead on a sash window that spoils the look
Sand mastic in Kingston by Sea
Sand mastic is the traditional way to point the gap between a timber window frame and the stone or brick around it. It’s a mix of sand and a linseed-oil-based binder and built up by hand. On period homes, it looks right where silicone wouldn’t. If you have modern sealant on a period surround and old cement repairs round a window that have failed, we can put it right, whatever the surface.
In smaller places like Kingston by Sea, homes range from older cottages to newer houses, with windows to match: timber, uPVC and aluminium. Each frame material needs the right sealant against the right wall.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we will sort it.
- Location
- Kingston by Sea (BN42, BN43)
- Region
- West Sussex
- Cover
- 12 months on all our work
- Quote
- A clear price before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Do you need sand mastic in Kingston by Sea?
Timber frames move with the seasons. The movement cracks the mastic over time.
The most common problems we see are:
- Mastic that needs renewing before redecorating
- Wind and rain getting in round a sash window
- Old sand mastic that has cracked, crumbled or fallen out
- A silicone bead on a sash window that spoils the look
For an older house near a landmark such as St Michael and All Angels Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
What your quote should include
- Is VAT in the price?
- Whether you can choose the colour
- What insurance they hold
- What preparation is included
Honest limits
We’ll always be straight with you, so here’s what new sealant won’t do:
- Cracked or broken glass
- Decayed frames that need repair
- Sash cords, weights and draught-proofing of the sashes
If in doubt, ring 0345 464 0079 or email us and we will say what we think.
What we seal
- Timber door frames
- Period & listed homes
- Stone surrounds
- Tenement windows
- Brick reveals
- Sash and case windows
DIY sealant or a professional job?
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions.
Some sealant jobs are within reach of a careful DIYer, 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.
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 per window, depending on the condition of the joints from start to finish. Parking around Kingston by Sea 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.
- Each surround is checked first.
- We rake out the old mastic and clean the joint.
- We fill deep gaps so the new mastic isn’t too thick.
- We point the joint with sand mastic by hand.
- We finish the mastic to a tidy line.
Getting ready for the visit
- Clear items away from the joints we’re working on
- Mention any sign-in or site rules at work premises
- Let us know about earlier repairs to the joints
Getting a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints.
Advice
What happens if it’s left?
Gaps round a sash window let in rain and draughts. Water can get to the frame and the masonry, so dealing with it now protects both. Homes in smaller places like Kingston by Sea can face more weather, and failed outside joints let damp into walls. Inside, a split seal lets water into floors and panels just as it would anywhere.
We do not show prices on the website, because the cost depends so much on the job itself. For a quick quote, please call 0345 464 0079 or email us.
Why choose Mr Mastic in Kingston by Sea
- Quality sealants from Arbo and Everbuild
- Fully insured
- A 12-month guarantee on all work
- Tidy, careful work
See our cost guide and customer reviews.
Windows and doors in Kingston by Sea
Kingston by Sea is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on the mastic around older windows and doors, which can dry out and crack sooner where a building faces the weather. Historic houses like Portslade Manor (about 1 mile east) are a reminder that the area around Kingston by Sea has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
If you look after a building such as Glebe Primary School, larger buildings have plenty of frames, and the mastic around each one ages. If you let a flat or house near Southwick station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
Kingston by Sea is about 1 mile east of Shoreham-by-Sea, in West Sussex. For sand mastic in and around Kingston by Sea, it’s easy to get a quote: please ring 0345 464 0079 or email us. We’re based in Crawley and cover West Sussex. Our area takes in 371 places across West Sussex, large and small.
Postcode districts we cover here for sand mastic: BN42 and BN43. Streets in the area include Cross Road, Roman Road and Kings Road, all of which we cover. Being close to the A270, Kingston by Sea is simple for us to get to. Neighbouring places we cover for sand mastic include Southwick (1 mile south-east), Portslade (1 mile east), Shoreham-by-Sea (1 mile west), Hangleton (2 miles east) and Old Shoreham (2 miles west). We also work in nearby towns such as Worthing (7 miles west), Haywards Heath (13 miles north-east), Burgess Hill (9 miles north-east), Littlehampton (13 miles west), Lancing (4 miles west) and Rustington (12 miles west).
What’s near Kingston by Sea
In Kingston by Sea, that means homes and buildings near Benfield Hill, Shoreham College and The Ship Inn and the streets around them. Kingston by Sea’s nearest station is Southwick station, roughly 0.6 miles south. A little further out are British Engineerium (2.8 miles east) and Southlands Hospital (0.7 miles west). The countryside around Kingston by Sea includes Shoreham Beach and Thundersbarrow Hill.
Landlord and commercial work in Kingston by Sea
Landlords and agents in Kingston by Sea can book us as well as homeowners. Resealing between tenancies keeps a property looking cared for before the next move-in.
From a single let to a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a one-year guarantee.
FAQs for Kingston by Sea
Does the coastal weather in Kingston by Sea affect outside sealant?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. The right product, a clean joint and the right depth all help it cope.
Is Kingston by Sea within the area you cover?
Yes, we do. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Does someone need to be in?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
Is it OK to seal over old sealant?
No, it will not last. It may look fine at first, but the new bead soon lifts. Removing the old sealant completely is the only lasting way.
I rent my home. Can I book you?
We’re happy to deal with the tenant, landlord or agent. Get your landlord’s agreement first.
Do you hold any approvals?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we are part of it.
Is it messy?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.
How long will you be here?
Typically it takes a few hours for a single window, longer for several. Bigger jobs take longer, and we’ll say how long yours will take.
Towns and villages near Kingston by Sea
More services for Kingston by Sea
How to look after the new joints
To keep the joints looking good and working properly:
- Clear gutters so water does not pour onto the windows
- Leave the new mastic unpainted
- Renew mastic before redecorating the windows
- Avoid patching sand mastic with silicone
Keep gutters and sills clear so water runs away from the surround. Water sitting against the mastic shortens its life.
Sound mastic protects the frame. Failed mastic lets water reach the timber, which can lead to rot.