Kent · England
Sand mastic for sash & case windows in Goose Green, Kent
Sand mastic for Goose Green, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Old sand mastic that has cracked, crumbled or fallen out
- Gaps round a timber door in stone or brick
- Open joints round the window box
Keeping the joints in good condition
No joint lasts for ever, but care makes a real difference. Our tips:
- Find out about consent before window work on a listed home
- Inspect the joints round the windows every year or so
- Ask us before painting near the mastic
- Do not run silicone over sand mastic
Leave the new mastic alone while it firms up. It skins over quickly but needs longer to fully harden.
Crumbling mastic lets rain into the joint. That water can reach the timber frame and the wall, so renewing it early is worth it.
Sand mastic for homes and businesses in Goose Green
A silicone bead around a sash window can look out of place and doesn’t suit the building. Sand mastic is the traditional choice, and we can replace one with the other. We’re often asked to deal with weathered mastic on the most exposed windows and open joints round the window box, across period & listed homes, stone surrounds and brick reveals.
Homes in small places like Goose 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.
Each job carries a 12-month guarantee, large or small.
- Place
- Goose Green (TN11)
- Wider area
- Kent
- Cover
- One year on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Your questions about sand mastic in Goose Green
Is Goose Green within the area you cover?
Yes. Goose Green is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
I let a flat near Yalding station. Can you help?
Yes, rental work is part of what we do. Just call 0345 464 0079 or email us and tell us about the property, and we will give you a clear quote.
Which products do you use?
Products from Arbo and Everbuild, among others, picked for each joint. We explain the product when we quote.
What does sand mastic cost?
The cost depends on the size of the job, access and how much old sealant has to come out. Call for a quick quote and we’ll talk you through it.
Where are you based?
We are a Crawley-based firm, with over 20 years’ experience. We work across South East England, London and Scotland.
Can you match the sealant colour?
We help you choose a colour that suits, from white and clear to greys and other shades. The product needed can limit the range.
Is consent needed for window work on a listed home?
Yes, it’s worth checking. Ask your local planning authority whether consent is needed for listed or conservation-area properties.
What’s sand mastic made of?
Sand plus a binder based on linseed oil. It’s built up in the joint by hand and shaped to suit the surround.
Landlord and commercial work in Goose Green
For anyone letting property in or around Goose Green, jobs at different addresses can go on one quote. Just tell us the addresses and what each one needs, and photos by email help.
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we’ll quote.
The process
Most of a good job is in the preparation, so that’s where we spend the time. Every joint is cleaned and dried before new material goes in. All told, the work takes a few hours for a single window, longer for several. Somewhere like Goose Green 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.
- We rake out the old mastic and clean the joint.
- Large voids are packed out.
- We point the joint with sand mastic by hand.
- We finish the mastic to a tidy line.
Before we arrive
- Tell us if parking is tricky
- Clear the area around the work
- Mention any leaks or damp you’ve noticed
Get a quote
If you are in Goose Green and need sand mastic, ring 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.
Read more
Also near Goose Green
What else we do in Goose Green
Common problems we fix in Goose Green
Timber frames move with the seasons. The movement cracks the mastic little by little.
Common reasons people contact us include:
- Gaps between timber frames and stone or brick
- A silicone bead on a sash window that spoils the look
- Wind and rain getting in round a sash window
- Old cement repairs round a window that have failed
Managing a site like Hadlow Primary School? Then the mastic around its windows and doors needs looking after like any other building’s.
Questions to ask before you book
- What product goes in the joint
- How the surfaces are prepared before sealing
- What the cure time is
- What guarantee comes with the work
What we cannot put right
Sealant is not the answer to every problem, and we’ll tell you before any work starts. It will not solve:
- Sash cords, weights and draught-proofing of the sashes
- Putty and glazing repairs
- Masonry that needs repairing
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we’ll tell you honestly before you book.
Surfaces we seal
- Sash and case windows
- Period & listed homes
- Timber door frames
- Brick reveals
- Tenement windows
- Stone surrounds
Leave it or put it right?
Replacing sash windows is a big decision for a period home, and in listed buildings it may need consent. Where the frames are in good order, new mastic seals the surround. Around Goose Green, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
There are no prices on our website, because each job is priced on what it involves. Call for a quick quote.
Why Goose Green customers choose us
- We never seal over old sealant
- 180+ five-star Google reviews
- More than 20 years in sealant work
- One-year guarantee on every job
Read what affects the cost and customer reviews.
Goose Green homes and the weather
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. With historic houses such as Old Soar Manor (about 2.5 miles north-west) nearby, there’s older building stock in the area around Goose Green as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
If you live in an older home near Church of St Dunstan, the joint between an old wall and a newer frame is usually the first place rain gets in. Letting a property close to Yalding station? Then cracked sand mastic around sash windows lets in the draughts tenants complain about.
Goose Green is about 4 miles north-east of Tonbridge, in Kent. Every kind of property in Goose Green can book us for sand mastic. Every job comes with our 12-month guarantee. Our area takes in 922 places across Kent, from the larger towns to small villages. There’s also a page for Crawley, about 25 miles away.
Jobs for sand mastic in TN11 works the same way as everywhere else we cover. We also cover Hadlow (1 mile south-west), West Peckham (1 mile north), Peckham Bush (1 mile south-east), Swanton (2 miles north) and Golden Green (2 miles south). Larger places within reach include Maidstone (8 miles east), Sevenoaks (8 miles north-west), Royal Tunbridge Wells (8 miles south-west), Gravesend (14 miles north), Tonbridge (4 miles south-west) and Northfleet (14 miles north).
Around Goose Green
We work in homes and buildings around The Harrow pub, Hadlow Rural Community School and Hadlow College, among other places. For rail, the closest station is Yalding station, roughly 2.5 miles east of the centre. Other landmarks nearby include Tonbridge Castle (4.4 miles south-west) and Tonbridge Cottage Hospital (5.3 miles south-west).
What affects the cost of sand mastic
The quote reflects the job in front of us. We take into account:
- The type of sealant required
- Access and height
- The old material and how stubborn it is
- Working hours on commercial sites
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you are not sure whether it needs doing, phone 0345 464 0079 or drop us an email and we will give you an honest view and a quote.
What we need to know
Before you ask for a quote, have a think about:
- Whether it has been sealed before
- Roughly how big the job is
- How we’d reach the joints
- The problem you’ve noticed
For a quote, call 0345 464 0079 or email us with the location and a short description of the problem. You’ll have a clear quote before work begins.