West Sussex · England
Sand Mastic in Wivelsfield
Sand mastic across Wivelsfield and nearby, with every bit of old sealant taken out first.
- Crumbling sand mastic round a window
- Gaps where the frame meets the masonry
- Patchy fillers round a sash window
About our sand mastic in Wivelsfield
Traditional burnt sand mastic blends with stone and brick surrounds. It’s a good fit for period properties where a modern sealant bead would stand out. We work on sash and case windows, tenement windows and timber door frames, and people most often call us about modern sealant on a period surround and old cement repairs round a window that have failed.
Homes in small places like Wivelsfield often stand in the open, with little to shelter their windows from wind and rain. Exposed frames and sills lose their mastic sooner than sheltered ones.
Our work is backed for twelve months, in Wivelsfield and everywhere else we cover.
- Location
- Wivelsfield (RH17)
- Wider area
- West Sussex
- Guarantee
- One year on every job
- Quotes
- A clear price before work begins
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Can I do it myself?
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
If you’ve already had a go yourself, that is fine. We cut it out and start again, so tell us about it when you ask for a quote.
Sand mastic in Wivelsfield: local notes
With historic houses such as Ockenden Manor (about 3.6 miles north-west) nearby, there’s older building stock in the area around Wivelsfield as well as newer homes. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window. 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.
Rented homes near Wivelsfield station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about. If you live in an older home near Ote Hall Chapel, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Wivelsfield is about 2 miles east of Burgess Hill, in West Sussex. Wherever you are in the RH17 postcode area, we cover sand mastic for homes and businesses. Across West Sussex, we cover 371 places, and Wivelsfield is one of them. Our Brighton page covers work nearby.
Postcode districts we cover here for sand mastic: RH17. That includes homes and businesses on Blackmores, Ditchling Road and Green Road and the roads around them. Neighbouring places we cover for sand mastic include Wivelsfield Green (1 mile east), Ditchling Common (1 mile south), Haywards Heath (2 miles north), Scaynes Hill (2 miles north-east) and Plumpton Green (3 miles south-east). Within a short drive, we also cover Crawley (11 miles north-west), Horsham (12 miles north-west), East Grinstead (12 miles north), Shoreham-by-Sea (12 miles south-west), Lancing (14 miles south-west) and Broadfield (10 miles north-west).
Landmarks near Wivelsfield
Locally, jobs take us to homes and businesses close to The Burgess Hill Academy and Royal Oak pub, among other places. The closest station to Wivelsfield is Wivelsfield station, about 1.4 miles west of the centre. Nearby you’ll also find St Francis Hospital (1.6 miles north) and Burgess Hill Museum (1.9 miles south-west). The countryside around Wivelsfield includes Bedelands Farm Nature Reserve and Ditchling Beacon.
Quotes for sand mastic in Wivelsfield
We quote each job individually. These are the things that affect it:
- Any mould that needs treating
- The size of the job
- How much old sealant there is and how hard it is to remove
- Which sealant suits the joint
The cost depends on the size of the job, how hard the old material is to remove and access to the work. You will have a clear quote before any work starts, so you know where you stand.
What we need to know
There’s no need for technical detail. Just tell us:
- Where the property is
- Any previous sealing or DIY work
- What’s wrong with the joints now
- A few photos by email, if you can
To get a quote, ring 0345 464 0079 or drop us an email and tell us where the job is and what the problem looks like. You’ll have a clear quote before work begins.
Wivelsfield: your questions answered
Is Wivelsfield within the area you cover?
Yes. Wivelsfield 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 you cover Wivelsfield for sand mastic?
Yes. Our work covers London and the South East, and Wivelsfield is part of that. Just ring 0345 464 0079 or send us an email with a few details of the job, and we will send you a clear quote.
Do you take out the old sealant first?
Yes. We cut out all the old sealant and clean the joint before resealing.
Can new sealant go over the old?
No. New silicone won’t bond to old silicone, and anything trapped underneath, including mould and water, stays there. It all has to come out first.
Can you do several jobs on one visit?
Yes. Just list everything you need.
Is it worth trying it myself?
Some simple jobs can be done by a careful DIYer. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
What do you need from me for a quote?
The location, the problem and the rough size of the job. Photos by email help too.
Where do you work from?
Our base is Crawley. We work across South East England, London and Scotland.
Aftercare tips
After the cure time, these simple habits help:
- Go gently near the mastic when preparing windows
- Ask the planning authority about consent for listed or conservation-area homes
- Do not paint over the new mastic
- Ask a joiner to look at soft timber first
Make sure water drains away from the window surround. Constant wetting wears the mastic faster.
Fine cracks show the mastic is starting to fail. Renewing it then is simpler than waiting until it falls out.
Places near Wivelsfield
More services for Wivelsfield
Landlord and commercial work in Wivelsfield
Housing providers, facilities teams and property managers book us too. We can quote a run of properties together.
For anyone letting property in or around Wivelsfield, jobs at different addresses can be quoted together. Send us the addresses and the work at each, and pictures by email help.
When it isn’t the sealant
Sealant isn’t the answer to every problem, and we’d rather say so up front. Sealant won’t put right:
- Sash cords, weights and draught-proofing of the sashes
- Broken panes
- Planning or listed building consent (your local planning authority decides)
If in doubt, phone 0345 464 0079 or drop us an email and we will say what we think.
Joints and surfaces we work on
- Tenement windows
- Brick reveals
- Stone surrounds
- Period & listed homes
- Sash and case windows
- Timber door frames
The process
We bring everything the job needs with us, so you do not need to buy or prepare anything. Once we have agreed what’s being done, we protect the area and start. Most jobs take a few hours for a single window, longer for several. Somewhere like Wivelsfield needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- We check each window surround and the condition of the joint.
- The joint is raked out and cleaned.
- We fill deep gaps so the new mastic is not too thick.
- New sand mastic is applied and shaped by hand.
- We finish the mastic to a tidy line.
Before we arrive
- On commercial sites, let us know about site rules
- For indoor joints, keep the area dry beforehand if you can
- Tell us about access, such as stairs, a lift or high-level joints
Getting a quote
We quote each job on its own. Simply call 0345 464 0079 or email us and describe the job and send photos if you have them.
Advice
Common problems we fix in Wivelsfield
Timber swells and shrinks with the weather. That movement opens up the mastic joint over time.
Common reasons people contact us include:
- Draughty sash windows at the surround
- Crumbling sand mastic round a window
- Mastic that needs renewing before redecorating
- Patchy fillers round a sash window
If you look after a building such as Wivelsfield Primary School, the mastic around its windows and doors needs looking after like any other building’s.
What to look for in a quote
- Which colour the sealant will be
- When the joint can take water or movement
- What guarantee comes with the work
- How hidden problems are handled