West Sussex · England
Sand mastic for sash & case windows in Balcombe Lane, West Sussex
Sand mastic for Balcombe Lane, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Modern sealant on a period surround
- Mastic round period door frames that has failed
- Gaps where the frame meets the masonry
Sand mastic for homes and businesses in Balcombe Lane
Our applicators renew the sand mastic around sash and case windows and doors in stone and brick. Out comes the old, loose mastic, and new mastic is applied and shaped by hand. Common call-outs are for patchy fillers round a sash window and wind and rain getting in round a sash window, across brick reveals, tenement windows and timber door frames.
Around Balcombe Lane, 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.
Whatever the size of the job, you get the same 12-month guarantee.
- Location
- Balcombe Lane (RH17)
- Wider area
- West Sussex
- Cover
- 12 months on all our work
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Signs you need sand mastic in Balcombe Lane
Over the years, sand mastic weathers. It hardens, cracks and starts to come away on the stone or timber.
Keep an eye out for these signs:
- Open joints round the window box
- Draughty sash windows at the surround
- Cracked mastic round a front door frame
- Tired mastic found when preparing windows for paint
If you look after a building such as Balcombe CofE Controlled Primary School, its window and door frames need their mastic kept sound, just like a home’s.
Questions to ask before you book
- How long to leave it before use
- Whether the sealant suits the joint
- Is VAT in the price?
- What guarantee comes with the work
Why it’s worth doing now in Balcombe Lane
Before painting the windows, it pays to renew the mastic. Painting over failed mastic doesn’t seal it and traditional guidance is to leave the new mastic unpainted. Where a wall is exposed, as many are in small places like Balcombe Lane, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
What it costs depends on the amount of work, how much old material has to come out and how easy the joints are to reach. You will have a clear quote before any work starts, so you know where you stand.
Why us?
- Anti-fungal sanitary silicone in wet areas
- Domestic, commercial and hotel work
- Tidy, careful work
- We are fully insured
Take a look at what affects the cost and customer reviews.
What we do, step by step
Before we leave, we go over the finished joints with you and tell you how long to leave it. The work normally takes a few hours for a single window, longer for several, depending on the size of the job. In a small place like Balcombe Lane, access is generally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We check the window surrounds and agree which joints need renewing.
- We rake out the old mastic and clean the joint.
- Large voids are packed out first, so the mastic is not too thick.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The finish is dressed so it sits neatly against the stone or brick.
Getting ready for the visit
- Tell us about any previous sealing or DIY attempts
- Tell us about any water getting in
- Mention any parking rules near the property
Getting a quote
Getting a quote is simple: let us know the job and the location. Photos by email help us understand the job, and we’ll take it from there.
Advice
What sand mastic looks like in Balcombe Lane
Historic houses like Tyes Place (about 3 miles south-west) are a reminder that the area around Balcombe Lane has older buildings as well as new. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic. The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
If you live in an older home near The Parish Church of St Mary, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. For landlords with property near Balcombe station, any sash windows need sound mastic to keep draughts and rain out.
Balcombe Lane is about 4 miles south-east of Crawley, in West Sussex. From the centre of Balcombe Lane to the outskirts, we cover sand mastic for every kind of property, from flats and houses to offices and hotels. Balcombe Lane is one of 371 towns and villages in West Sussex where we work.
Here we cover the RH17 postcode area for sand mastic. If you are just outside Balcombe Lane, we cover Balcombe (1 mile south), Worth Abbey (2 miles north-east), Furnace Green (2 miles north-west), Pease Pottage (3 miles west) and Staplefield (3 miles south-west). Within a short drive, we also cover Crawley (4 miles north-west), Horsham (8 miles west), Haywards Heath (5 miles south), Burgess Hill (8 miles south), East Grinstead (6 miles north-east) and Broadfield (4 miles north-west).
What’s near Balcombe Lane
Around Balcombe Lane, our work takes us to homes and buildings near Oriel High School, among other places. The nearest railway station is Balcombe station, about 1.3 miles south. Nearby you will also find Crawley Museum (3.9 miles north-west) and Waterbury Castle (4.8 miles south-east). Not far away are Blunts Wood and Paiges Meadow and Tilgate Lake.
Looking after it afterwards
To keep the joints looking good and working properly:
- Ask a joiner to look at soft timber first
- Check the mastic when you check the paintwork
- Leave the new mastic unpainted
- Sort the mastic before the decorators arrive
Do not run silicone over the new mastic. If anything cracks, get it looked at before trying a quick fix.
Small cracks are a sign the mastic is ageing. It’s easier to renew it before it drops out.
What affects the quote in Balcombe Lane
We quote each job individually. These are the things that affect it:
- The type of sealant required
- Whether old sealant or filler has to be cut out
- The size of the job
- The number of rooms or windows
No two jobs are quite the same, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all play a part.
What to tell us for a quote
Photos help, but a description is a good start. Please mention:
- Whether it’s a home or a business
- Where the job is, and your postcode
- How many joints, rooms or windows are involved
- Access, such as stairs, a lift or height
We don’t publish a price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To arrange one, phone 0345 464 0079 or email us.
Surface by surface
Sash and case windows
Sash windows are where we do most sand mastic work. We renew the mastic round each box.
Tenement and terrace windows
Where a building is shared, window work may involve neighbours, so check who is responsible first.
What sealant work cannot fix
To be straight with you, some problems need a different trade:
- Crumbling stone or brickwork round the window
- Sash cords, weights and draught-proofing of the sashes
- Planning or listed building consent (your local planning authority decides)
If you are not sure, just phone 0345 464 0079 or send us an email and we will give you a straight answer before booking.
Where we work in Balcombe Lane
- Timber door frames
- Period & listed homes
- Stone surrounds
- Sash and case windows
- Brick reveals
- Tenement windows
Balcombe Lane: your questions answered
Do you cover Balcombe Lane for sand mastic?
Yes, Balcombe Lane is within the area we cover. We work across London and the South East. Just call 0345 464 0079 or email us with a few details of the job, and we’ll give you a clear price.
Do you work for landlords with property near Balcombe station?
Yes. We work for letting agents and landlords as well as householders. You can phone 0345 464 0079 or send us an email with the details for a clear quote.
Can new sealant go over the old?
No. The old sealant always comes out first.
Will there be a smell?
Sometimes, a little. Any smell clears as the sealant cures, and ventilation helps.
What sealant do you use?
The product depends on the job: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. Brands we use include Arbo and Everbuild.
Can you do several jobs on one visit?
Yes. More than one area can go on one quote.
How long will you be here?
That depends on the amount of work, but as a guide it takes a few hours for a single window, longer for several. We’ll tell you when we quote.
Will it make a mess?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.