West Sussex · England
Sand mastic for sash & case windows in Broadbridge Heath, West Sussex
Sand mastic for Broadbridge Heath and the surrounding area: careful preparation, the right product and tidy work. Call for a quick quote.
- Mastic round period door frames that has failed
- Modern sealant on a period surround
- Tired mastic found when preparing windows for paint
Looking after it afterwards
A little care helps the new joints last. We recommend:
- Ask a joiner to look at soft timber first
- Keep sills and gutters clear so water drains away
- Leave the new mastic unpainted
- Don’t run silicone over sand mastic
Avoid painting over the new mastic, which is the traditional advice. If you are redecorating, ask us first.
Renewing mastic before redecorating saves doing it twice. Painting over failed mastic hides the problem for a while.
How we handle sand mastic in Broadbridge Heath
For a listed home or one in a conservation area, ask your local planning authority if consent is needed before window work. Like-for-like sand mastic is often the preferred finish. If you have mastic dropping out of the joint and failed mastic on an exposed elevation, we can help.
Homes around Broadbridge Heath 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.
You get a 12-month guarantee, the same in Broadbridge Heath as everywhere else we work.
- Location
- Broadbridge Heath (RH12)
- Wider area
- West Sussex
- Guarantee
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Leave it or put it right?
Filling over old, loose mastic doesn’t last. Raking out and preparing the joint gives it a sound base so the new work lasts. Homes in smaller places like Broadbridge Heath can face more weather, and failed outside joints let damp into walls. Inside, a split seal lets water into floors and panels just as it would anywhere.
No two jobs are quite the same, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all make a difference.
What you get with us
- We’re fully insured
- Domestic, commercial and hotel work
- Tidy, careful work
- Quality sealants from Arbo and Everbuild
Take a look at how sealant jobs are priced or our reviews.
Signs you need sand mastic in Broadbridge Heath
Paint, silicone or cement used over old mastic causes problems. They do not suit the joint and we normally remove them.
The problems people normally mention when they call are:
- Old cement repairs round a window that have failed
- Draughty sash windows at the surround
- Mastic round period door frames that has failed
- Weathered mastic on the most exposed windows
Homes close to St. John's Church include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Comparing quotes
- What the quote includes, VAT included or not
- How the surfaces are prepared before sealing
- What product goes in the joint
- The length of the guarantee
Towns and villages near Broadbridge Heath
Other services in Broadbridge Heath
What the job involves on each surface
Brick reveals
Gaps between frame and brick let in rain and draughts. New mastic seals the gap.
Timber door frames
Round a period front door, sand mastic gives the right look.
Frames and glazing around Broadbridge Heath
The South East is one of the drier parts 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 Shelley Primary School, the mastic around its windows and doors needs looking after like any other building’s. Rented homes near Christs Hospital station change hands often, and older sash windows in a rental need their mastic kept sound to keep the weather out.
Broadbridge Heath is about 2 miles west of Horsham, in West Sussex. For sand mastic in and around Broadbridge Heath, it’s easy to get a quote: please phone 0345 464 0079 or email us. We’re based in Crawley and cover West Sussex, Broadbridge Heath included. Our area takes in 371 places across West Sussex, from the larger towns to small villages. You can also see our page for Crawley, about 8 miles away.
All of RH12 is within our area for sand mastic. Streets in the area include Church Road, Broadbridge Way and Sargent Way, and we cover them all. Close by, we work in Tower Hill (1 mile south-east), Warnham (2 miles north), Horsham (2 miles east), Itchingfield (2 miles south-west) and Rowhook (2 miles north-west). We also work in nearby towns such as Crawley (8 miles east), Haywards Heath (13 miles east), Burgess Hill (13 miles south-east), Broadfield (7 miles east), Storrington (11 miles south) and Billingshurst (5 miles south-west).
Landmarks near Broadbridge Heath
Around Broadbridge Heath, our work takes us to homes and buildings near Tanbridge House School, Farlington Strood Park and Shelley Arms and the streets around them. Broadbridge Heath’s nearest station is Christs Hospital station, roughly 1.2 miles south. Other landmarks nearby include Horsham Hospital (1.7 miles east) and Christs Hospital School Museum (1.6 miles south). For a walk, there’s Warnham LNR.
For landlords and businesses
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. Several properties can go on one quote.
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance.
Common questions in Broadbridge Heath
Is Broadbridge Heath within the area you cover?
Yes, smaller places are covered as well as towns. 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 Christs Hospital station?
Yes. We work for landlords and letting agents as well as homeowners. You can call 0345 464 0079 or send us an email with the details for a clear quote.
How long does the job take?
A typical job takes anything from a few hours to a full day, depending on how many windows. We will confirm how long when we quote.
Can you work on commercial sites?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. Working times can be discussed when we quote.
Can old silicone round a sash window be swapped for sand mastic?
In most cases. The silicone is cut out and the joint cleaned, then point it with sand mastic.
Do you take out the old sealant first?
Yes. All of the old material is cut out and the joint cleaned.
Do you have insurance?
Yes. Full insurance covers our work, and we can confirm the details when we quote.
Can you seal over the old sealant?
No. New silicone will not bond to old silicone, and it traps any mould or water underneath. We remove it all first.
How it works
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. For most jobs that takes anything from a few hours to a full day, depending on how many windows, and the area is left clean. Parking around Broadbridge Heath is usually easier than in a town centre, but mention any lanes, gates or long drives. If the job is outside, tell us about side access and how high the joints are.
- First we agree which joints need doing.
- Old mastic and any loose material are raked out.
- We pack any deep voids first.
- The sand mastic is mixed and pressed into the joint by hand.
- The surface is finished to suit the stone or brick.
Preparing for the visit
- Let us know about parking restrictions
- Tell us about any previous sealing or DIY attempts
- Tell us about access, such as stairs, a lift or high-level joints
Getting a quote
Getting a quote is simple: let us know the job and the location. A few pictures by email make the job easier to understand.
Related advice
Can I do it myself?
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
If you’re set on DIY, put the effort into 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.