West Sussex · England
Sand Mastic in Handcross
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in Handcross, with a 12-month guarantee on every job. Ask us for a quote.
- Gaps where the frame meets the masonry
- Modern sealant on a period surround
- Crumbling sand mastic round a window
Looking after it afterwards
Good habits help new joints last longer. A few tips:
- Don’t paint over the new mastic
- Keep sills and gutters clear so water drains away
- Inspect the joints round the windows every year or so
- Have rotten timber repaired before new mastic goes in
Keep paint scrapers and sanders off the mastic when redecorating. Hard scraping can loosen it.
Small cracks are a sign the mastic is ageing. Renewing it then is simpler than waiting until it falls out.
Sand mastic in Handcross, 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 replace one with the other. We work on tenement windows, stone surrounds and timber door frames, and the jobs we see most are draughty sash windows at the surround and mastic dropping out of the joint.
Around Handcross, 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.
All our work comes with a one-year guarantee.
- Where
- Handcross (RH17)
- Region
- West Sussex
- Cover
- One year on every job
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
What affects the cost of sand mastic
We quote each job individually. This is what makes a difference:
- The product the joint needs
- The old material and how stubborn it is
- The number and length of the joints
- The number of rooms or windows
Rather than a set price list, we price the job in front of us: the amount of work, the old material and the access. You’ll know the price before we begin.
Helping us quote
There’s no need for technical detail. It helps if you can tell us:
- If it’s domestic, commercial or a hotel
- Photos by email, if that is easy
- How many joints, rooms or windows are involved
- How we’d reach the joints
To get a quote, ring 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. We will give you a clear price before any work starts.
Landlords, agents and businesses in Handcross
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 be quoted together.
If you manage several properties in or around Handcross, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs, and photos by email help.
What sealant work can’t fix
We will always be straight with you, so here’s what new sealant will not do:
- Sashes that need overhauling
- Broken panes
- Crumbling stone or brickwork round the window
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we will tell you honestly before you book.
Surfaces we seal
- Tenement windows
- Timber door frames
- Period & listed homes
- Sash and case windows
- Brick reveals
- Stone surrounds
Surface by surface
Stone surrounds
Stone surrounds suit sand mastic well. It finishes to look like part of the surround.
Brick reveals
An open joint at a brick reveal lets weather in. Renewing the mastic closes it.
Nearby places to Handcross
Other services in Handcross
How it works
We work through the job in order: protect, prepare, seal, tidy. Typically it takes a few hours per window, depending on the condition of the joints, and the area is left clean. Somewhere like Handcross needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- First we agree which joints need doing.
- Old mastic and any loose material are raked out.
- Deep gaps are packed so the mastic sits at the right depth.
- We apply the mastic by hand and shape it.
- The surface is finished to suit the stone or brick.
Preparing for the visit
- Tell us if parking is tricky
- Tell us about access, such as stairs, a lift or high-level joints
- Where the joints are inside, avoid wetting them before we arrive
Getting a quote
There’s no standard price list, because every job is different. Instead, we give you a clear price for your job. To get started, ring 0345 464 0079 or send us an email.
Read more
Why act early in Handcross
Draughts round a sash window are not always the sashes. Open mastic joints round the box can let air in and new mastic seals them. In a small place like Handcross, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
Combining jobs into one visit is normally more efficient than separate visits. We’ll send you a clear quote for the lot.
Why us?
- More than 20 years in sealant work
- Homes, businesses and hotels
- 180+ five-star Google reviews
- Anti-fungal silicone where joints get wet
Read our cost guide and our reviews.
Windows and doors in Handcross
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. With historic houses such as Tyes Place (about 1.9 miles south-east) nearby, there’s older building stock in the area around Handcross 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 is traditional sand mastic.
Managing a site like Handcross Primary School? Then its window and door frames need their mastic kept sound, just like a home’s. For an older house near a landmark such as All Saints, the joint between an old wall and a newer frame is usually the first place rain gets in. For landlords with property near Balcombe station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
Handcross is about 4 miles south of Crawley, in West Sussex. Across the RH17 area, our applicators can take on sand mastic. Handcross is one of 371 places in West Sussex where we work.
Jobs for sand mastic in RH17 works the same way as everywhere else we cover. We cover properties on High Street, London Road and Windmill Platt and the roads around them. Close by, we work in Slaugham (1 mile south), Plummers Plain (2 miles south-west), Colgate (3 miles north-west), Broadfield (3 miles north) and Lower Beeding (3 miles south-west). Further out, we also cover Crawley (4 miles north), Horsham (5 miles west), Haywards Heath (6 miles south-east), Burgess Hill (7 miles south-east), East Grinstead (10 miles north-east) and Shoreham-by-Sea (15 miles south).
Near you in Handcross
Typical jobs here are in homes near The Royal Oak Public House and Handcross Park School. For rail, the closest station is Balcombe station, about 2.8 miles east. Nearby you’ll also find Crawley Hospital (4.3 miles north). The countryside around Handcross includes Tilgate Lake and Blunts Wood and Paiges Meadow.
Common questions in Handcross
Can you help a landlord with a rental near Balcombe station?
Yes. We work for letting agents and landlords as well as householders. You can call 0345 464 0079 or email us with the details for a clear quote.
Can you do sand mastic in Handcross?
Yes, Handcross is within the area we cover. We work across London and the South East. Just ring 0345 464 0079 or drop us an email with a few details of the job.
Can you quote for more than one area?
Yes, we can. More than one area can go on one quote.
Are you fully insured?
Yes. We’re fully insured, with over 20 years’ experience in sealant work.
Can sand mastic be painted?
It’s traditionally left unpainted, which is what traditional guidance recommends. Talk to us before any painting near it.
Do you do commercial work?
Yes. We have worked for hotels, offices and other businesses, and we’re fully insured.
Do you offer different sealant colours?
Most of the time, yes. We’ll tell you which colours the right product comes in and agree one before any work starts.
Do you take out the old sealant first?
Yes, every time. New sealant won’t bond properly to old, so any old material comes out before anything new goes in.