West Sussex · England
Sand Mastic in Balls Cross
Sand mastic across Balls Cross and nearby, with old sealant always removed completely and a 12-month guarantee.
- Cement or filler used on old window joints that has cracked
- Weathered mastic on the most exposed windows
- Modern sealant on a period surround
Sand mastic for homes and businesses in Balls Cross
Sand mastic skins over fairly quickly, but it takes longer to harden fully. Traditionally, sand mastic is left unpainted, so ask us before you decorate. Common call-outs are for cracked mastic round a front door frame and gaps between timber frames and stone or brick, on period & listed homes, timber door frames and tenement windows.
Mastic can only go onto a dry, clean joint, so window work in Balls Cross is booked around the forecast. Tell us about access to every side of the house, including upper-floor windows.
A one-year guarantee comes as standard, so you are covered after we’ve gone.
- Where
- Balls Cross (GU28)
- Wider area
- West Sussex
- Guarantee
- One year on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
How the visit works
There isn’t much for you to do on the day. Show us the job and we’ll take it from there. The job generally takes a few hours for a single window, longer for several from start to finish. In a small place like Balls Cross, access is usually the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We check the window surrounds and agree which joints need renewing.
- 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.
- The finish is dressed so it sits neatly against the stone or brick.
Before we arrive
- Let us know about earlier repairs to the joints
- Clear the area around the work
- Let us know about parking restrictions
Ask for a quote
Need a quote? Please call 0345 464 0079 or drop us an email with a few details. You will know what we plan to do, and what it will cost, before any work begins.
Related advice
Aftercare tips
After the cure time, these simple habits help:
- Clear gutters so water does not pour onto the windows
- Avoid patching sand mastic with silicone
- Ask the planning authority about consent for listed or conservation-area homes
- Ask a joiner to look at soft timber first
Check the mastic when you check the paintwork. Small cracks are easier to deal with early.
Good mastic helps keep the frame dry. Failed mastic lets water reach the timber, which can lead to rot.
Towns and villages near Balls Cross
Also in Balls Cross
Balls Cross questions
Is there a guarantee on sand mastic in Balls Cross?
All our work, in Balls Cross and everywhere else, comes with a 12-month guarantee. We’re fully insured, and an ARBOMaster approved applicator.
Will you come out to Balls Cross?
Yes. Balls Cross is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
How long does sand mastic take to harden?
Not right away. The skin forms first, and the full set comes later and we will give you an idea for your job.
Do you work for letting agents?
Yes. As well as homeowners, we work for landlords, agents, businesses and hotels in Balls Cross.
Will it make a mess?
No. We work neatly, protect the area around the joints and tidy up afterwards.
Will the old sealant be removed?
Yes. Sealing over old sealant is the main reason resealing fails early, so we never do it.
Do you work for hotels and businesses?
Yes. We work in offices, washrooms, hotels and other commercial premises. We can talk about working times when we quote.
Which products do you use?
We choose the sealant for the joint, not the other way round. Movement, water and weather all affect the choice, and we will tell you what we’re using.
For landlords and businesses
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. We can quote for more than one property at once.
Do you need sand mastic in Balls Cross?
Sand mastic slowly weathers. It dries out, cracks and loses its grip on the stone or timber.
Signs it’s time to call us include:
- Gaps between timber frames and stone or brick
- Mastic dropping out of the joint
- Silicone on a period window that looks wrong
- Old cement repairs round a window that have failed
Homes close to Holy Trinity Church include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Before you book anyone
- What happens if they find a problem under the old sealant
- What the quote includes, VAT included or not
- What insurance they hold
- The length of the guarantee
What the job involves on each surface
Tenement and terrace windows
Tenements and terraces often have many sash windows with ageing mastic. We can do one window or several.
Period and listed homes
On a listed home or in a conservation area, the right material matters. Like-for-like sand mastic is normally favoured.
Balls Cross homes and the weather
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. With historic houses such as Petworth House (about 2.9 miles south) nearby, there’s older building stock in the area around Balls Cross as well as newer homes. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.
Around Balls Cross, as everywhere, sand mastic is only as good as the preparation behind it.
Balls Cross is about 12 miles west of Horsham, in West Sussex. Our applicators cover sand mastic for homeowners, landlords and businesses in Balls Cross and nearby, as part of our work across West Sussex. We cover 371 towns and villages across West Sussex, from the larger towns to small villages. We also work in Crawley, around 18 miles away.
Postcode districts we cover here for sand mastic: GU28. Other places close to Balls Cross include Kirdford (2 miles east), Mackerel's Common (2 miles north-east), Plaistow (3 miles north-east), Ifold (4 miles north-east) and Wisborough Green (4 miles east). Within a short drive, we also cover Horsham (12 miles east), Chichester (15 miles south-west), Littlehampton (15 miles south), Rustington (15 miles south), Storrington (10 miles south-east) and Billingshurst (6 miles east).
Landmarks near Balls Cross
Nearby you’ll also find Lodsworth Castle (4.7 miles south-west). For a walk, there’s The Mens and Shillinglee Lake.
DIY sealant or a professional job?
A DIY attempt does not rule out a professional job. We remove it and do the joint properly, so tell us about it when you ask for a quote.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is.
Leave it or put it right?
Before painting the windows, it pays to renew the mastic. Painting over failed mastic does not seal it and traditional guidance is to leave the new mastic unpainted. Where a wall is exposed, as many are in small places like Balls Cross, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
We don’t show prices on the website, because each job is priced on what it involves. Call for a quick quote.
What you get with us
- We leave the area clean and tidy
- Approved under the ARBOMaster scheme
- A 12-month guarantee on all work
- 4.9 on Google from 180+ five-star reviews
Read how sealant jobs are priced and customer reviews.