West Sussex · England
Sand mastic for sash & case windows in Worth, West Sussex
Specialist sand mastic for Worth: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- Draughts and rain around sash boxes
- Failed mastic on an exposed elevation
- Modern sealant on a period surround
Sand mastic in Worth
Burnt sand mastic is a traditional material blends with stone and brick surrounds. It’s a good fit for period properties, where modern sealant can look out of place. We’re often asked to deal with wind and rain getting in round a sash window and old cement repairs round a window that have failed, across stone surrounds, tenement windows and timber door frames.
Homes around Worth range from older properties to newer houses, and their windows range just as widely. The right sealant depends on the frame and on what it sits in.
All of our work is guaranteed for twelve months, in Worth and everywhere else we cover.
- Location
- Worth (RH10)
- Wider area
- West Sussex
- Guarantee
- A year, on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Aftercare tips
Simple care keeps the joints in good condition. We recommend:
- Renew mastic before redecorating the windows
- Avoid patching sand mastic with silicone
- Ask a joiner to look at soft timber first
- Ask the planning authority about consent for listed or conservation-area homes
Avoid painting over the new mastic, as traditional guidance advises. If you’re redecorating, ask us first.
Once mastic starts to crumble, rain gets in. That water can reach the timber frame and the wall, so renewing it early is worth it.
What affects the quote in Worth
You’ll get a clear quote before work begins. It’s based on:
- Any mould that needs treating
- Whether the work is at height
- The number and length of the joints
- When we can work, for business premises
We do not show prices on the website, because the cost depends so much on the job itself. For a quick quote, please phone 0345 464 0079 or drop us an email and we’ll talk you through it.
What to tell us for a quote
Photos help, but a description is a good start. Try to tell us:
- The address or postcode of the job
- Pictures of the joints, sent by email
- Whether it has been sealed before
- The type of property
We don’t publish a price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To get started, phone 0345 464 0079 or send us an email.
Why act early in Worth
If you are redecorating, renew the mastic first. Paint over cracked mastic will not stop the gaps, and the new mastic is traditionally left unpainted. Homes in smaller places like Worth can face more weather, and failed outside joints let damp into walls. Indoors, a failed seal lets water into floors and panels as it would anywhere.
Rather than a set price list, we price the job in front of us: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Why Worth clients choose us
- More than 20 years in sealant work
- Quality sealants from Arbo and Everbuild
- Full insurance on every job
- Rated 4.9 stars on Google
Read what affects the cost and customer reviews.
When it isn’t the sealant
To be straight with you, there are a few things sealant won’t fix:
- Timber that has rotted
- Sash cords, weights and draught-proofing of the sashes
- Planning or listed building consent (your local planning authority decides)
If you’re not sure, just ring 0345 464 0079 or drop us an email and we’ll give you a straight answer before you book.
Where we work in Worth
- Timber door frames
- Period & listed homes
- Tenement windows
- Brick reveals
- Sash and case windows
- Stone surrounds
Also near Worth
More services for Worth
How the visit works
You do not need to clear the whole room or building, only the area right around the joints. Everything nearby is protected, and the work takes anything from a few hours to a full day, depending on how many windows for a typical job. In a smaller place like Worth, parking is seldom the issue; lanes, gates and long drives are worth mentioning. For outside work, side access and the height of the joints help us plan.
- First, we look at the surrounds with you and agree what needs doing.
- Old, loose mastic is raked out and the joint cleaned.
- We pack any deep gaps so the mastic sits at the right depth.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- The finish is dressed so it sits neatly against the stone or brick.
How to prepare
- Where the joints are inside, avoid wetting them before we arrive
- Mention any leaks or damp you’ve noticed
- Let us know about parking restrictions
Get a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we’ll talk you through what we’d do. When it suits you, call 0345 464 0079 or email us.
Advice
Should I try it myself first?
If you’ve already had a go yourself, that’s fine. We cut it out and start again, so just mention it when you contact us.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
What the job involves on each surface
Period and listed homes
Period homes look their best with traditional materials, and sand mastic is one of them.
Stone surrounds
We take care not to mark the stone while raking out the old mastic.
Your questions about sand mastic in Worth
Should the sealant in an older Worth home be renewed?
In most cases, yes, if it hasn’t been done for a while. Sealant doesn’t last for ever, and its life depends on use, cleaning and weather, and many homes in Worth may already be on their second or third set.
Do you cover smaller places like Worth?
Yes. Worth is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Do the sealants smell?
That depends on the sealant. Some products have a noticeable smell, others very little.
Should I use sand mastic or silicone?
We’ll talk it through with you. Period homes often look best with sand mastic and newer frames suit modern sealant.
Do you guarantee sand mastic work?
There’s a 12-month guarantee on every job, sand mastic included.
How long does the job take?
Most jobs take a few hours for a single window, longer for several, including preparation and clearing up. We will confirm how long when we quote.
Can I choose the sealant colour?
We will suggest a colour to suit the surroundings. The product needed can limit the range.
Do you hold any approvals?
Yes. We are approved under the ARBOMaster scheme, which is run for the Arbo sealant brand.
What sand mastic looks like in Worth
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Crawley, which Worth is part of, is one of England’s post-war new towns. With many homes from the post-war decades, replacement windows and doors are common. The mastic around replacement frames ages too, and gaps at sills and frame heads are where water gets in.
Schools such as Maidenbower Junior School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s. Rented homes near Three Bridges station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about. Homes close to St Nicholas' Church include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Worth is about 2 miles east of Crawley, in West Sussex. Jobs in Worth get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. Our area takes in 371 places across West Sussex, large and small.
We work across the RH10 postcode area for sand mastic. If you need sand mastic at a property on Worth Road, Banks Road and Saxon Road or anywhere close by, we can help. Neighbouring places we cover for sand mastic include Pound Hill (1 mile north), Maidenbower (1 mile south), Three Bridges (1 mile north-west), Tilgate (1 mile south-west) and Forge Wood (2 miles north). Larger places within reach include Horsham (8 miles south-west), Haywards Heath (8 miles south), Burgess Hill (11 miles south), East Grinstead (6 miles east), Broadfield (3 miles south-west) and Billingshurst (15 miles south-west).
Around Worth
Typical jobs here are in homes near Oriel High School, Worth Park Gardens and Dem Shish pub, among other places. For rail, the closest station is Three Bridges station, roughly 0.7 miles north-west of the centre. A little further out are Crawley Hospital (2.2 miles west) and County Mall (1.6 miles west). Green spaces nearby include Tilgate Lake.