West Sussex · England
Birdham Sand Mastic
Sand mastic in Birdham from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Open joints round the window box
- Tired mastic found when preparing windows for paint
- Old sand mastic that has cracked, crumbled or fallen out
About our sand mastic in Birdham
Silicone on a period window often looks wrong and doesn’t suit the building. Sand mastic is the traditional choice, and we can replace one with the other. We work on sash and case windows, brick reveals and period & listed homes, and the jobs we see most are mastic that needs renewing before redecorating and gaps where the frame meets the masonry.
Around Birdham, many homes face open ground, so their windows and doors take the full weather. That exposure dries out and cracks the mastic around frames and sills faster.
There’s a 12-month guarantee on every job.
- Location
- Birdham (PO20)
- Region
- West Sussex
- Guarantee
- A year, on every job
- Price
- A clear price before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Can I do it myself?
A careful DIYer can reseal a simple joint, 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.
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly, so tell us about it when you ask for a quote.
When something else is needed
We’ll always be straight with you, so here’s what sealant can’t fix:
- Cracked or broken glass
- Decisions on consent for listed homes
- Sashes that need overhauling
Not sure which it is? You can call 0345 464 0079 or email us and we will tell you honestly.
What we seal
- Brick reveals
- Timber door frames
- Tenement windows
- Period & listed homes
- Sash and case windows
- Stone surrounds
For landlords and businesses
We work for letting agents and landlords as well as householders. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.
We regularly work with letting and managing agents. Tell us the address, the job and how access works.
Do you need sand mastic in Birdham?
Rain on the window surround works into any crack and pushes it out. Windows facing the weather tend to go first.
These are the problems we’re asked about most:
- Draughts and rain around sash boxes
- A silicone bead on a sash window that spoils the look
- Gaps round a timber door in stone or brick
- Gaps where the frame meets the masonry
For site and facilities teams at buildings such as Birdham CE Primary School, larger buildings have plenty of frames, and the mastic around each one ages.
Comparing quotes
- What guarantee comes with the work
- Which colour the sealant will be
- What happens if the job turns out different
- How the joint is cleaned and prepared
Places near Birdham
More services for Birdham
How the job changes by surface
Period and listed homes
Period homes look their best with traditional materials, and sand mastic is one of them.
Brick reveals
Loose mastic comes out and deep gaps are packed before the new mastic goes in.
What affects the cost of sand mastic
Call for a quick quote. The main things that affect it are:
- Which sealant suits the joint
- How many rooms, windows or areas are involved
- Any mould that needs treating
- Access and height
The cost reflects the work involved, not a rough estimate. That’s why we ask about the job first.
What to tell us for a quote
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- What the problem is, such as mould, gaps, leaks or cracking
- Whether it has been sealed before
- Pictures of the joints, sent by email
- The rough size of the job
We don’t publish a price list, because every job is different. Instead, your job gets its own clear quote. To arrange one, ring 0345 464 0079 or email us.
Birdham homes and the weather
Birdham is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That is hard on the mastic around older windows and doors, especially on the side facing the sea. 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.
In the older streets around St James' Church, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. Rented homes near Fishbourne station change hands often, and any sash windows need sound mastic to keep draughts and rain out.
Birdham is about 4 miles south-west of Chichester, in West Sussex. Across the PO20 area, our applicators can take on sand mastic. Our area takes in 371 places across West Sussex. We also work in Portsmouth, about 11 miles from Birdham.
Work in PO20 is quoted and booked the same way as anywhere else. Streets in the area include Old Common Close, Main Road and Walwyn Close, all of which we cover. If you are just outside Birdham, we cover Somerley (1 mile south-west), Almodington (1 mile south), Shipton Green (1 mile west), Highleigh (2 miles south-east) and Earnley (2 miles south). We also work in nearby towns such as Bognor Regis (6 miles east), Chichester (4 miles north-east), Selsey (5 miles south-east), Littlehampton (13 miles east), Emsworth (6 miles north-west) and Rustington (14 miles east).
Around Birdham
In Birdham, that means homes and buildings near The Birdham Public House, among other places. Birdham’s nearest station is Fishbourne station, roughly 3.3 miles north of the centre. Other landmarks nearby include Chichester Castle (4.1 miles north-east) and St Richard's Hospital (4.4 miles north-east). Green spaces nearby include Pilsey Island.
How it works
When we get to you, we check the joints match what you told us. If anything is different, we explain it before carrying on. Most jobs then take anything from a few hours to a full day, depending on how many windows. Somewhere like Birdham needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- 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.
- We dress the finish so it sits neatly against the masonry.
Preparing for the visit
- Keep pets and children clear of the area while we work
- Clear the area around the work
- For business premises, tell us about site rules or sign-in
Getting a quote
It all starts with a short chat. Describe the problem, the location and the size of the job, and we will talk you through what we’d do. When it suits you, ring 0345 464 0079 or email us.
Related advice
Birdham: your questions answered
Does the coastal weather in Birdham affect outside sealant?
Coastal homes put outside sealant through more weather than inland ones, so preparation and the right sealant matter all the more. Walls facing the sea are usually the first to need attention.
Do you work for landlords with property near Fishbourne station?
Yes, rental work is part of what we do. Just call 0345 464 0079 or email us and tell us about the property, and we’ll give you a clear price.
Does someone need to be in?
That depends on where the joints are. Inside work needs someone to give us access, and for outside work we will agree access with you when we book.
Can new sealant go over the old?
No, it won’t last. It may look fine at first, but the new layer lifts away from the old one. The old sealant has to come out completely.
Can I paint the new mastic?
Sand mastic is normally left unpainted, as guidance on traditional windows advises. Ask us before decorating.
Do you offer different sealant colours?
Yes. Sealants come in white, clear, grey and other colours, and we’ll agree it with you first.
How long does the job take?
That depends on how much there is to do, but most jobs take anything from a few hours to a full day, depending on how many windows. We will give you a better idea when we quote.
How do I get a quote for sand mastic in Birdham?
It depends on the job, so we quote each one individually. For a quick quote, phone 0345 464 0079 or email us and tell us what needs doing and where.