West Sussex · England
Sand Mastic in Bosham Hoe
Sand mastic across Bosham Hoe and nearby, with every bit of old sealant taken out first.
- Cement or filler used on old window joints that has cracked
- Mastic that needs renewing before redecorating
- Open joints round the window box
What sand mastic looks like in Bosham Hoe
Bosham Hoe 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. 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, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you let a flat or house near Bosham station, any sash windows need sound mastic to keep draughts and rain out.
Bosham Hoe is about 3 miles south-west of Chichester, in West Sussex. Our applicators cover sand mastic for homeowners, landlords and businesses in Bosham Hoe and nearby. Across West Sussex, we cover 371 places, Bosham Hoe among them. Portsmouth is on our list too, about 10 miles from Bosham Hoe.
Our applicators cover all of the PO18 postcode area for sand mastic and the streets around it. Local streets include Hoe Lane and Smuggler's Lane. Close by, we work in Bosham (1 mile north), West Itchenor (1 mile south-west), Broadbridge (2 miles north), Chidham (2 miles north-west) and Apuldram (2 miles east). Larger places within reach include Bognor Regis (7 miles east), Chichester (3 miles north-east), Selsey (6 miles south-east), Littlehampton (14 miles east), Emsworth (5 miles north-west) and Rustington (15 miles east).
What’s near Bosham Hoe
The closest station to Bosham Hoe is Bosham station, about 1.9 miles north of the centre. Nearby you’ll also find Chichester Cathedral Treasury (3.1 miles north-east) and St Richard's Hospital (3.8 miles north-east). For a walk, there’s Stoke Down and Nutborne Marshes.
Sand mastic in Bosham Hoe, done properly
A silicone bead around a sash window can look out of place and does not suit the building. Sand mastic gives a finish that matches the age of the house and we can swap the silicone for it. We work on timber door frames, stone surrounds and sash and case windows, and common reasons people get in touch are weathered mastic on the most exposed windows and patchy fillers round a sash window.
Outdoor sealant needs dry, clean surfaces, so work on frames around Bosham Hoe is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
Big or small, it’s backed by our 12-month guarantee in Bosham Hoe and across West Sussex.
- Location
- Bosham Hoe (PO18)
- Wider area
- West Sussex
- Guarantee
- One year on every job
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
DIY sealant or a professional job?
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.
What we do, step by step
Most of a good job is in the preparation, so that is where we spend the time. Every joint is cleaned and dried before new material goes in. In total, it normally takes a few hours for a single window, longer for several. For a village or hamlet like Bosham Hoe, the journey is planned in advance: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- We start by checking each surround and agreeing the joints to renew.
- The loose and crumbling mastic is raked out and the joint cleaned.
- We pack any deep gaps so the mastic sits at the right depth.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- We dress the surface so it sits neatly against the masonry.
Getting ready for the visit
- Move anything stored near the joints
- Mention any tricky access
- For business premises, tell us about site rules or sign-in
How to get a quote
For a quote, call 0345 464 0079 or email us and tell us where the job is and what the problem looks like. We’ll give you a clear quote before any work starts.
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What affects the cost of sand mastic
Call for a quick quote. What matters most is:
- The number and length of the joints
- Access and height
- Which sealant suits the joint
- Any working-time requirements on site
Doing several joints on one visit generally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. We’ll give you a clear quote for the lot.
What we need to know
When you call or email, these details help:
- How we’d reach the joints
- Where the property is
- The rough size of the job
- A few photos by email, if you can
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is, and email pictures if that’s easy.
How to look after the new joints
How long the joints last depends on use and care. Here’s what we suggest:
- Plan mastic work ahead of painting
- Leave the new mastic unpainted
- Have rotten timber repaired before new mastic goes in
- Go gently near the mastic when preparing windows
Don’t touch or press the mastic while it hardens. It forms a skin fairly soon, but takes longer to harden fully.
Gaps round a sash box let in draughts and rain. Left, the gap tends to get bigger.
What we cannot put right
New sealant cannot fix everything, and we’ll tell you before work begins. Sealant will not put right:
- Planning or listed building consent (your local planning authority decides)
- Decayed frames that need repair
- Sash cords, weights and draught-proofing of the sashes
If in doubt, call 0345 464 0079 or email us and we will say what we think before booking.
Surfaces we seal
- Stone surrounds
- Tenement windows
- Sash and case windows
- Timber door frames
- Brick reveals
- Period & listed homes
Towns and villages near Bosham Hoe
Also in Bosham Hoe
What the job involves on each surface
Timber door frames
Round a period front door, sand mastic gives the right look.
Stone surrounds
The stone is treated with care when the old mastic comes out.
When to call us in Bosham Hoe
Scraping and sanding before painting can loosen old mastic. Many people find it crumbling when they prepare the windows, which is a good time to renew it.
These are the problems we are asked about most:
- Mastic dropping out of the joint
- Cement or filler used on old window joints that has cracked
- Draughts and rain around sash boxes
- Open joints round the window box
Homes close to The Parish Church of the Holy Trinity include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
What your quote should include
- What happens if the job turns out different
- Is the old sealant removed completely?
- What guarantee comes with the work
- What the quote includes, VAT included or not
Common questions in Bosham Hoe
I let a flat near Bosham station. Can you help?
Yes. We work for landlords and letting agents as well as householders, and several properties can go on one quote. You can phone 0345 464 0079 or send us an email with the details for a clear quote.
Is sand mastic in a coastal place like Bosham Hoe any different?
Coastal homes put outside sealant through more weather than inland ones, so preparation and the right sealant matter all the more. It’s worth checking the walls that face the sea first.
What should I tell you?
Where the job is, what the problem is and roughly how big it is. If you can, email a few photos.
Do you work in Bosham Hoe?
Yes, we do. Bosham Hoe is part of the area we cover.
Does someone need to be in?
That depends on where the joints are. For work indoors, someone needs to let us in, while outside work can sometimes be arranged differently.
Are you an approved applicator?
Yes. We are an ARBOMaster approved applicator.
Will the old sealant be removed?
Yes, always, and completely. New silicone does not stick to old silicone, so any old material comes out before anything new goes in.
How long does sand mastic take to go off?
It skins over fairly quickly but takes longer to harden fully. We’ll tell you what to expect for your job.