East Sussex · England
Swaile's Green Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Swaile's Green, backed by a 12-month guarantee. Call for a quick quote.
- Gaps round a timber door in stone or brick
- Draughty sash windows at the surround
- Crumbling sand mastic round a window
For landlords and businesses
Whether it’s one flat or a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance that we can handle for you.
Sand mastic in Swaile's Green, done properly
For a listed home or one in a conservation area, ask your local planning authority whether consent is needed for work to windows. Sand mastic is often favoured as a like-for-like material. We are often asked to deal with wind and rain getting in round a sash window and crumbling sand mastic round a window, on brick reveals, timber door frames and period & listed homes.
Homes in small places like Swaile's Green often stand in the open, with little to shelter their windows from wind and rain. That exposure dries out and cracks the mastic around frames and sills faster.
You are covered for a year from the day we finish. If anything isn’t right with it, phone 0345 464 0079 or email us.
- Location
- Swaile's Green (TN32)
- Region
- East Sussex
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
How to look after the new joints
No joint lasts for ever, but care makes a real difference. Our tips:
- Look over the window mastic once a year
- Do not run silicone over sand mastic
- Clear gutters so water doesn’t pour onto the windows
- Avoid heavy scraping on the mastic joint
Avoid painting over the new mastic, which is the traditional advice. Ask us before any decorating around it.
Sound mastic protects the frame. Failed mastic lets water reach the timber, which can lead to rot.
How the visit works
When we get to you, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. Most jobs then take anything from a few hours to a full day, depending on how many windows. Somewhere like Swaile's Green needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. 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.
- The sand mastic is mixed and pressed into the joint by hand.
- The surface is finished to suit the stone or brick.
Before we arrive
- Let us know if you’ve seen damp or leaks
- Where the joints are inside, avoid wetting them before we arrive
- Let us know about earlier repairs to the joints
Get a quote
Want a quote for sand mastic? Please phone 0345 464 0079 or drop us an email and tell us about the job. We’ll explain what we’d do and give you a clear quote before any work starts.
Advice
Swaile's Green: your questions answered
Can you help a landlord with a rental near Robertsbridge station?
Yes. We work for landlords and agents as well as homeowners, and several properties can be quoted together. Just call 0345 464 0079 or drop us an email with the address and what needs doing, and we will give you a clear quote.
Can you do sand mastic in Swaile's Green?
Yes, Swaile's Green 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.
Do you guarantee sand mastic work?
Every job comes with our 12-month guarantee, and we are fully insured.
Should I use sand mastic or silicone?
Sand mastic usually suits period timber windows best. On modern frames, we’d normally use a flexible sealant.
Do you have insurance?
Yes. We’re fully insured for every job we do.
Can you match the sealant colour?
Most of the time, yes. We will tell you which colours the right product comes in and agree one before any work starts.
Where is Mr Mastic based?
We’re a Crawley-based firm, with over 20 years’ experience. We work across South East England, London and Scotland.
Can I add another job to the visit?
Of course. Combining jobs makes good use of the visit.
Signs you need sand mastic in Swaile's Green
Most of it is simply age. Sand mastic is a maintenance item like any pointing, depending on exposure and upkeep.
It’s worth asking for a quote if you see:
- Cement or filler used on old window joints that has cracked
- Tired mastic found when preparing windows for paint
- A silicone bead on a sash window that spoils the look
- Crumbling sand mastic round a window
Homes close to St Marks Staplecross include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Comparing quotes
- How much experience the applicator has
- What the quote includes, VAT included or not
- How the joint is cleaned and prepared
- How long the guarantee is
How the job changes by surface
Brick reveals
An open joint at a brick reveal lets weather in. Renewing the mastic closes it.
Stone surrounds
Stone surrounds suit sand mastic well. The finish blends with the masonry.
What affects the cost of sand mastic
We quote each job individually. These are the things that affect it:
- Mould in or behind the old joints
- The type of sealant required
- How easy the joints are to reach
- How many areas need sealing
No two jobs are quite the same, so we quote each one individually. Size, access and the product the joint needs all make a difference.
What to tell us for a quote
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- A few pictures by email, if you can
- Any access issues, like height or stairs
- What the problem is, such as mould, gaps, leaks or cracking
- If it’s domestic, commercial or a hotel
If you are in Swaile's Green and need sand mastic, call 0345 464 0079 or drop us an email. Tell us what the problem is and where, and we will agree the price before any work begins.
Honest limits
We will always be straight with you, so here’s what new sealant won’t do:
- Sash cords, weights and draught-proofing of the sashes
- Whether work needs listed building consent
- Decayed frames that need repair
Not sure which it is? You can ring 0345 464 0079 or email us and we will tell you honestly before booking.
Surfaces we seal
- Brick reveals
- Timber door frames
- Sash and case windows
- Tenement windows
- Period & listed homes
- Stone surrounds
Places near Swaile's Green
More services for Swaile's Green
What sand mastic looks like in Swaile's Green
Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. Historic houses like Durhamford Manor (about 1.2 miles south) are a reminder that the area around Swaile's Green has older buildings as well as new. 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.
For landlords with property near Robertsbridge station, older sash windows in a rental need their mastic kept sound to keep the weather out. Schools such as Staplecross Methodist Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s.
Swaile's Green is about 7 miles north of Hastings, in East Sussex. Across the TN32 area, we cover sand mastic for homes and businesses. Swaile's Green is one of 289 places in East Sussex where we work. Brighton is on our list too, about 30 miles from Swaile's Green.
Work in TN32 is quoted and booked the same way as anywhere else. If you’re just outside Swaile's Green, we cover Cripp's Corner (1 mile north), Staplecross (1 mile north-east), Whatlington (2 miles south-west), Sedlescombe (2 miles south) and Snagshall (2 miles north). We also work in nearby towns such as Hastings (7 miles south), Bexhill-on-Sea (8 miles south), Hailsham (13 miles south-west), St Leonards (7 miles south), Polegate (15 miles south-west) and Hastings Old Town (8 miles south).
Local landmarks in Swaile's Green
In Swaile's Green, that means homes and buildings near The White Hart pub and Vinehall School. The closest station to Swaile's Green is Robertsbridge station, about 3.1 miles north-west. A little further out are Conquest Hospital (5.4 miles south) and Nortons Farm Museum (3 miles south). Green spaces nearby include Senlac Hill.