East Sussex · England
Sand mastic for sash & case windows in Furner's Green, East Sussex
Sand mastic for Furner's Green and the surrounding area: careful preparation, the right product and tidy work. Call for a quick quote.
- Draughty sash windows at the surround
- Gaps round a timber door in stone or brick
- Open joints round the window box
Signs you need sand mastic in Furner's Green
Timber frames move with the seasons. The movement cracks the mastic over time.
Common reasons people contact us include:
- Mastic worn away on windows facing the weather
- Draughts and rain around sash boxes
- Mastic that needs renewing before redecorating
- Cement or filler used on old window joints that has cracked
For site and facilities teams at buildings such as Danehill Church of England Primary School, the mastic around its windows and doors needs looking after like any other building’s.
Before you book anyone
- Are they insured?
- How long the guarantee is
- Which colour the sealant will be
- Whether all the old sealant comes out first
About our sand mastic in Furner's Green
We renew sand mastic around sash windows and doors set in stone or brick. The old mastic is raked out, and new mastic is applied and shaped by hand. If you are dealing with patchy fillers round a sash window and weathered mastic on the most exposed windows, we can put it right.
Mastic can only go onto a dry, clean joint, so window work in Furner's Green is booked around the forecast. Tell us about access to every side of the house, including upper-floor windows.
The work is guaranteed for twelve months. If something isn’t right with it in that time, tell us and we will put it right.
- Where
- Furner's Green (TN22)
- Wider area
- East Sussex
- Cover
- 12 months on all our work
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Also near Furner's Green
What else we do in Furner's Green
Windows and doors in Furner's Green
Historic houses like Priest House (about 5 miles north-west) are a reminder that the area around Furner's Green has older buildings as well as new. In older buildings, 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, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Homes close to The Parish Church of All Saints include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. Letting a property close to Haywards Heath station? Then older sash windows in a rental need their mastic kept sound to keep the weather out.
Furner's Green is about 5 miles east of Haywards Heath, in East Sussex. If you need sand mastic in Furner's Green, it’s easy to get a quote: please ring 0345 464 0079 or send us an email. We cover East Sussex from our Crawley base, Furner's Green included. Our East Sussex coverage runs to 289 places, and Furner's Green is one of them. Crawley is on our list too, around 11 miles away.
Every address in TN22 is covered for sand mastic. That includes homes and businesses on Tanyard Lane and Slider's Lane. If you’re just outside Furner's Green, we cover Danehill (1 mile north), Chelwood Common (2 miles north), Horsted Keynes (2 miles north-west), Chelwood Gate (2 miles north) and Nutley (2 miles north-east). Within a short drive, we also cover Lewes (10 miles south), Hailsham (15 miles south-east), Crowborough (7 miles east), Uckfield (5 miles south-east), Newhaven (15 miles south) and Peacehaven (15 miles south).
Landmarks near Furner's Green
Typical jobs here are in homes near Sheffield Park Garden. The nearest railway station is Haywards Heath station, roughly 5 miles west of the centre. A little further out are Princess Royal Hospital (4.6 miles west) and Waterbury Castle (2.5 miles north-west). Open spaces near Furner's Green include Brickfield Meadow.
Your questions about sand mastic in Furner's Green
Is Furner's Green within the area you cover?
Yes, we do. We work across London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Can you help a landlord with a rental near Haywards Heath station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. Just ring 0345 464 0079 or email us with the address and what needs doing, and we will give you a clear quote.
Which is right for my windows, sand mastic or modern sealant?
For period timber windows in stone or brick, sand mastic is often the better fit. On modern frames, we’d normally use a flexible sealant.
How much does sand mastic cost in Furner's Green?
We don’t publish prices, because the cost depends on the job: its size, the old material, access and the product needed. You will get a clear quote before any work starts.
Can I add another job to the visit?
Yes. Just list everything you need.
Will there be a smell?
Sometimes, a little. Any smell clears as the sealant cures, and ventilation helps.
Are you insured?
Yes. Mr Mastic is fully insured, with over 20 years’ experience in sealant work.
What sealant do you use?
Each joint gets the product that suits it. Where it moves, gets wet or faces the weather makes a difference.
What the job involves on each surface
Tenement and terrace windows
Tenements and terraces often have many sash windows with ageing mastic. We work on single windows or whole elevations.
Brick reveals
Loose mastic comes out and deep gaps are packed before pointing.
Landlord and commercial work in Furner's Green
We work for landlords and letting agents as well as householders. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.
From a single let to a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
What happens if it’s left?
A silicone bead can be quicker, but on period stone or brick it often looks out of place. Sand mastic is the traditional material and finishes neatly against the masonry. In a small place like Furner's Green, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Rather than a set price list, we price the job in front of us: how many joints, what’s in them now and how we reach them. You will know the price before we begin.
Why book with us
- 4.9 on Google from 180+ five-star reviews
- Neat joints and a tidy finish
- Sanitary silicone with an anti-fungal additive in wet areas
- More than 20 years in sealant work
Read what affects the cost and our reviews.
How the visit works
At the end, we look at the finished work together and tell you how long to leave it. The work normally takes a few hours per window, depending on the condition of the joints, depending on how much there is to do. In a small place like Furner's Green, access is normally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- Each surround is checked first.
- We rake out the old mastic and clean the joint.
- Large voids are packed out.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
Preparing for the visit
- Let us know about parking restrictions
- Move anything stored near the joints
- Tell us about any water getting in
Get a quote
We do not publish a price list, because every job is different. Instead, your job gets its own clear quote. To get started, ring 0345 464 0079 or drop us an email.
Read more
When something else is needed
Sealant is not the answer to every problem, and we’d rather say so up front. It will not solve:
- Timber that has rotted
- Damaged stone surrounds
- Sashes that rattle, stick or won’t open
If in doubt, phone 0345 464 0079 or send us an email and we will say what we think.
What we seal
- Tenement windows
- Brick reveals
- Stone surrounds
- Sash and case windows
- Timber door frames
- Period & listed homes
What affects the cost of sand mastic
The price is agreed before any work begins. It’s based on:
- Whether old sealant or filler has to be cut out
- Whether the work is at height
- The amount of work
- The number of rooms or windows
Combining jobs into one visit usually makes better use of the time than several visits. We’ll give you a clear quote for the lot.
Helping us quote
What to tell us when you ask for a quote:
- Whether it has been sealed before
- Whether it’s a home or a business
- Where the property is
- The rough size of the job
Getting a quote is simple: let us know the job and the location and its rough size. A few pictures by email make the job easier to understand.