West Sussex · England
Roffey Sand Mastic
Our applicators work in Roffey on traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old sealant removed completely, joints prepared properly and a one-year guarantee.
- Draughty sash windows at the surround
- Mastic round period door frames that has failed
- Mastic worn away on windows facing the weather
About our sand mastic in Roffey
Sand mastic skins over fairly quickly but full hardening takes longer. Traditional guidance is not to paint over it and we will advise if you are redecorating. If you have a silicone bead on a sash window that spoils the look and open joints round the window box, we can help, whatever the surface.
Many houses in smaller places like Roffey have conservatories, garden rooms or patio doors. Those joints need the same attention as the main windows.
We guarantee the work for a year. If something isn’t right with it in that time, tell us and we will put it right.
- Where
- Roffey (RH12, RH13)
- Wider area
- West Sussex
- Guarantee
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
FAQs for Roffey
Do you work for landlords with property near Littlehaven station?
Yes. We work for landlords and letting agents as well as homeowners, and several properties can go on one quote. You can ring 0345 464 0079 or email us with the details for a clear quote.
Is Roffey in your area for sand mastic?
Yes, Roffey is within the area we cover. Our work covers London and the South East. You can ring 0345 464 0079 or email us and let us know what needs doing.
Can I do it myself?
Some simple jobs can be done by a careful DIYer. Most DIY failures come from sealing over old material, wet joints or too much sealant.
What’s sand mastic made of?
A traditional pointing material made from sand and a linseed-oil-based binder for the joint between timber frames and masonry.
Do you guarantee sand mastic work?
All our work has a one-year guarantee, and we are fully insured.
Can you seal over the old sealant?
No, because it fails. The old sealant always comes out first, so the new sealant bonds properly.
Where do you work from?
Mr Mastic is based in Crawley. Our applicators cover Roffey.
Will there be a smell?
There can be a smell while the sealant cures. Ventilation helps.
Places near Roffey
Other services in Roffey
Surface by surface
Timber door frames
Door frames get knocked and soaked and the mastic can crack early. It’s renewed by hand.
Sash and case windows
A sash window’s box frame sits in the masonry opening. The gap round it is pointed with sand mastic.
When something else is needed
We will not take on work that won’t last, so these are the limits:
- Damaged stone surrounds
- Whether work needs listed building consent
- Broken panes
Not sure which it is? You can call 0345 464 0079 or send us an email and we will tell you honestly before you book.
Where we work in Roffey
- Brick reveals
- Period & listed homes
- Tenement windows
- Timber door frames
- Sash and case windows
- Stone surrounds
Why deal with it now?
Not every draught comes from the sashes themselves. Open mastic joints round the box can let air in and new mastic seals them. Around Roffey, water from a failed joint in an older home can soak into timber and plaster, which is far harder to put right than the sealant itself.
Instead of a standard rate, we look at what your job involves: the amount of work, the old material and the access. The price is agreed before we begin.
Why choose Mr Mastic in Roffey
- More than 20 years in sealant work
- Trusted Arbo and Everbuild sealants
- Experience in homes, commercial sites and hotels
- We never seal over old sealant
See our cost guide and our reviews.
How the visit works
When we arrive, we start by going over the job with you, so you know exactly what we are doing. Surfaces next to the work are protected before any work begins. The work generally takes a few hours for a single window, longer for several. For a job in Roffey, we agree the time, the access and parking before the day. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- We check each window surround and the condition of the joint.
- We rake out the old mastic and clean the joint.
- Large voids are packed out.
- New sand mastic is applied and shaped by hand.
- We finish the mastic to a tidy line.
Getting ready for the visit
- For business premises, tell us about site rules or sign-in
- Where the joints are inside, avoid wetting them before we arrive
- Let us know about earlier repairs to the joints
Ask for a quote
Every job is quoted individually. Just call 0345 464 0079 or drop us an email with the details and send photos if you have them.
Related advice
Aftercare tips
Simple care keeps the joints in good condition. Our advice:
- Have rotten timber repaired before new mastic goes in
- Inspect the joints round the windows every year or so
- Clear gutters so water does not pour onto the windows
- Ask us before painting near the mastic
Keep gutters and sills clear so water runs away from the surround. Water sitting against the mastic shortens its life.
Once mastic starts to crumble, rain gets in. That water can reach the timber frame and the wall so early renewal protects both.
Sand mastic in Roffey: local notes
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.
For landlords with property near Littlehaven station, older sash windows in a rental need their mastic kept sound to keep the weather out. In the older streets around All Saints Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame. For site and facilities teams at buildings such as Northolmes Junior School, larger buildings have plenty of frames, and the mastic around each one ages.
Roffey is about 1 mile north-east of Horsham, in West Sussex. We provide sand mastic to householders, landlords and businesses in Roffey and nearby, as part of our work across West Sussex. 371 places in West Sussex are on our list, from the larger towns to small villages.
Postcode districts we cover here for sand mastic: RH12 and RH13. Whether your property is on Innes Road, Agate Lane and Manor Road or a nearby road, we can help. If you’re just outside Roffey, we cover Mannings Heath (2 miles south), Faygate (2 miles north-east), Colgate (2 miles east), Monk's Gate (3 miles south) and Kilnwood Vale (3 miles north-east). Further out, we also cover Crawley (5 miles north-east), Haywards Heath (10 miles south-east), Burgess Hill (11 miles south-east), East Grinstead (13 miles east), Broadfield (4 miles east) and Storrington (12 miles south-west).
Local landmarks in Roffey
Locally, jobs take us to homes and businesses close to Bohunt Horsham and Millais School and the streets around them. The nearest railway station is Littlehaven station, roughly 0.6 miles north-west of the centre. A little further out are Christs Hospital School Museum (3.5 miles south-west) and Horsham Hospital (1.1 miles west). For a walk, there’s Warnham LNR.
What affects the quote in Roffey
Every job gets its own quote. This is what makes a difference:
- Whether the work is at height
- Whether there’s mould to deal with
- Which sealant suits the joint
- How many rooms, windows or areas are involved
What it costs depends on the size of the job, how much old material has to come out and access to the work. You’ll have a clear quote before any work starts.
Helping us quote
Photos by email are helpful but not essential. Please mention:
- The problem you’ve noticed
- Whether it’s a home or a business
- How many joints, rooms or windows are involved
- Pictures of the joints, sent by email
If you’re in Roffey and need sand mastic, ring 0345 464 0079 or drop us an email. Tell us what the problem is and where, and you will get a clear quote before we start.
DIY sealant or a professional job?
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions.
Sealing over old silicone is the commonest DIY error. Silicone doesn’t stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.