West Sussex · England
Sand mastic for sash & case windows in Old Shoreham, West Sussex
Sand mastic in Old Shoreham from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Cracked mastic round a front door frame
- Tired mastic found when preparing windows for paint
- Mastic worn away on windows facing the weather
Sand mastic in Old Shoreham
Burnt sand mastic is a traditional material that sits naturally against stone and brick. It’s a good fit for period properties where a modern sealant bead would stand out. We work on period & listed homes, sash and case windows and brick reveals, and people most often call us about mastic round period door frames that has failed and mastic that needs renewing before redecorating.
Outdoor sealant needs dry, clean surfaces, so work on frames around Old Shoreham is planned for dry weather. Tell us about access to every side of the house, including upper-floor windows.
Our work is backed for twelve months, and the guarantee is the same wherever you are.
- Location
- Old Shoreham (BN43)
- Wider area
- West Sussex
- Cover
- One year on every job
- Quote
- A clear price before work begins
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Common questions in Old Shoreham
Do you cover smaller places like Old Shoreham?
Yes. Old Shoreham is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Can you help a landlord with a rental near Shoreham-By-Sea station?
Yes, rental work is part of what we do. Just phone 0345 464 0079 or email us and tell us about the property, and we’ll give you a clear quote.
Is there any odour?
Sometimes, a little. Any smell clears as the sealant cures, and ventilation helps.
How long does sand mastic take?
Most jobs take anything from a few hours to a full day, depending on how many windows, including preparation and clearing up. We will confirm how long when we quote.
Can I choose the sealant colour?
Usually, yes. Sealants come in white, clear, grey and other colours for many products, and we will agree it with you first.
Can I paint the new mastic?
Sand mastic is normally left unpainted, as guidance on traditional windows advises. Ask us before decorating.
Can you replace silicone on a period window with sand mastic?
Often, yes. Once the silicone is out and the joint prepared, sand mastic is applied by hand.
When will the new mastic be hard?
It forms a skin fairly soon, then hardens over a longer period. The weather and joint depth both affect it.
Nearby places to Old Shoreham
More services for Old Shoreham
Sand mastic in Old Shoreham: local notes
Old Shoreham is within about 1 mile 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, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For site and facilities teams at buildings such as Swiss Gardens Primary School, the mastic around its windows and doors needs looking after like any other building’s. If you let a flat or house near Shoreham-By-Sea station, any sash windows need sound mastic to keep draughts and rain out.
Old Shoreham is about 1 mile west of Shoreham-by-Sea, in West Sussex. Every kind of property in Old Shoreham is covered for sand mastic, old or new, large or small. The work is guaranteed for a year. Across West Sussex, we cover 371 places, and Old Shoreham is one of them. For nearby work, see our Brighton page.
All of BN43 is covered for sand mastic. We also cover the places around Old Shoreham: Shoreham-by-Sea (1 mile east), Adur (1 mile north), Kingston by Sea (2 miles east), Southwick (2 miles east) and Castle Town (3 miles north). Larger places within reach include Worthing (5 miles west), Haywards Heath (14 miles north-east), Burgess Hill (11 miles north-east), Littlehampton (11 miles west), Rustington (10 miles west) and Storrington (9 miles north-west).
Around Old Shoreham
In Old Shoreham, that means homes and buildings near The Sir Robert Woodard Academy and The Amsterdam pub, among other places. The nearest railway station is Shoreham-By-Sea station, roughly 0.7 miles east of the centre. A little further out are Southlands Hospital (1.4 miles east) and Old Castle (4.6 miles west). For a walk, there’s Lancing Ring and Adur Estuary RSPB Reserve.
What we cannot put right
Sealant is not the answer to every problem, and we’d rather say so up front. Sealant won’t put right:
- Sashes that need overhauling
- Masonry that needs repairing
- Broken panes
Not sure which it is? You can call 0345 464 0079 or email us and we will tell you honestly before you book.
What we seal
- Tenement windows
- Period & listed homes
- Sash and case windows
- Timber door frames
- Stone surrounds
- Brick reveals
The process
We keep the work tidy and contained to the area we are working on, so you can carry on as normal. Expect the work to take anything from a few hours to a full day, depending on how many windows. Somewhere like Old Shoreham needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We start by checking each surround and agreeing the joints to renew.
- Old, loose mastic is raked out and the joint cleaned.
- Large voids are packed out first, so the mastic isn’t too thick.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- We dress the surface so it sits neatly against the masonry.
Getting ready for the visit
- Try not to wet indoor joints just before the visit
- Let us know about parking restrictions
- Tell us about any water getting in
Ask for a quote
For a quote, phone 0345 464 0079 or send us an email with the location and a short description of the problem. We’ll give you a clear price before any work starts.
Related advice
How to look after the new joints
After the cure time, these simple habits help:
- Check the mastic when you check the paintwork
- Ask a joiner to look at soft timber first
- Renew mastic before redecorating the windows
- Avoid heavy scraping on the mastic joint
Leave the new mastic unpainted, as traditional guidance advises. Ask us before any decorating around it.
Small cracks are a sign the mastic is ageing. Renewing it then is simpler than waiting until it falls out.
Should I try it myself first?
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it doesn’t work out, we can still put it right.
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.
What affects the quote in Old Shoreham
There’s no set price list, because jobs vary so much. The quote depends on:
- The old material and how stubborn it is
- How easy the joints are to reach
- Any mould that needs treating
- The number and length of the joints
The cost reflects the work involved, not a rough estimate. That’s why we ask about the job first and give you a clear quote before work begins.
What we need to know
There’s no need for technical detail. Just tell us:
- What the problem is, such as mould, gaps, leaks or cracking
- Whether it has been sealed before
- If it’s domestic, commercial or a hotel
- Photos by email, if that’s easy
For sand mastic in Old Shoreham, ring 0345 464 0079 or send us an email. Tell us what the problem is and where, and you’ll get a clear quote before we start.
Common problems we fix in Old Shoreham
Scraping and sanding before painting can loosen old mastic. It’s often found when windows are being prepared for paint, which is a good time to renew it.
Keep an eye out for any of the following:
- Gaps where the frame meets the masonry
- Tired mastic found when preparing windows for paint
- A silicone bead on a sash window that spoils the look
- Wind and rain getting in round a sash window
For an older house near a landmark such as St Nicolas' Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
What to look for in a quote
- Whether all the old sealant comes out first
- Who turns up on the day
- How long to leave it before use
- What guarantee comes with the work
What happens if it’s left?
Filling over old, loose mastic doesn’t last. Raking out and preparing the joint gives it a sound base so the new work lasts. Where a wall is exposed, as many are in small places like Old Shoreham, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
Some things make a job bigger or smaller: the old material and how easily it comes out, any mould to treat, and whether we need extra access for height. Your quote takes all of that into account.
Why book with us
- Arbo and Everbuild products
- Rated 4.9 stars on Google
- Over 20 years’ experience
- We never seal over old sealant
Take a look at how sealant jobs are priced or our reviews.