Kent · England
Sand mastic for sash & case windows in Sarre, Kent
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homeowners, landlords and businesses in Sarre. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Old sand mastic that has cracked, crumbled or fallen out
- Wind and rain getting in round a sash window
- Mastic that needs renewing before redecorating
Sand mastic in Sarre, done properly
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 swap the silicone for it. If you’re dealing with wind and rain getting in round a sash window and gaps between timber frames and stone or brick, we can put it right.
Somewhere as small as Sarre, older homes often have timber frames set in stone or brickwork. Not every older frame suits a modern silicone bead, and sometimes a traditional sand mastic is the better choice.
Whatever the size of the job, you get the same 12-month guarantee in Sarre and across Kent.
- Location
- Sarre (CT7)
- Region
- Kent
- Cover
- One year on every job
- Price
- A clear price before we start
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Keeping the joints in good condition
To keep the joints looking good and working properly:
- Go gently near the mastic when preparing windows
- Get any rot dealt with first
- Renew mastic before redecorating the windows
- Clear gutters so water does not pour onto the windows
Avoid sealing over the mastic with silicone. If you see a crack, ask us to take a look before trying a quick fix.
Crumbling mastic lets rain into the joint. That water can reach the timber frame and the wall, so renewing it early is worth it.
Surface by surface
Brick reveals
Brick reveals round timber windows are often pointed with sand mastic. It gives a traditional finish.
Period and listed homes
Sand mastic is the like-for-like choice for many period homes. On listed buildings, check with your planning authority first.
DIY sealant or a professional job?
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it does not work out, we can still put it right.
What sand mastic looks like in Sarre
Sarre is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. Both are hard on the mastic around older windows and doors, which can dry out and crack sooner where a building faces the weather. London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For landlords with property near Minster station, cracked sand mastic around sash windows lets in the draughts tenants complain about. If you live in an older home near Church of Saint Nicholas, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Sarre is about 5 miles south-east of Herne Bay, in Kent. For sand mastic in and around Sarre, please call 0345 464 0079 or email us for a quick quote. We are based in Crawley and cover Kent, Sarre included. Sarre is one of 922 places in Kent we cover. There’s also a page for Chelmsford, roughly 42 miles from Sarre.
Here we cover the CT7 postcode area for sand mastic. If you need sand mastic at a property on Island Road, Old Road and Chantry Park or anywhere close by, we can help. We also cover the places around Sarre: St Nicholas at Wade (1 mile north-east), West Stourmouth (1 mile south), East Stourmouth (2 miles south), Monkton (2 miles east) and Upstreet (2 miles south-west). Within a short drive, we also cover Canterbury (8 miles south-west), Margate (7 miles north-east), Dover (14 miles south), Ramsgate (7 miles east), Broadstairs (8 miles east) and Whitstable (9 miles west).
Local landmarks in Sarre
In Sarre, that means homes and buildings near Grove Ferry Picnic Area and Kings Head Inn, among other places. The nearest railway station is Minster station, roughly 3.5 miles east. Other landmarks nearby include Powell-Cotton Museum (3.8 miles north-east).
Signs you need sand mastic in Sarre
Timber frames move with the seasons. That movement opens up the mastic joint over time.
These are the problems we’re asked about most:
- Crumbling sand mastic round a window
- Mastic that needs renewing before redecorating
- Cracked mastic round a front door frame
- Draughty sash windows at the surround
Schools such as St Nicholas At Wade Church of England Primary School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s.
What to look for in a quote
- Whether all the old sealant comes out first
- Who turns up on the day
- When the joint can take water or movement
- Which sealant they’ll use, and why
What we do, step by step
A visit follows a simple pattern: we check the joints, mask and protect the surrounding surfaces, do the work and clear up. It generally takes a few hours for a single window, longer for several. Somewhere as small as Sarre, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We look at the surrounds with you and agree the joints to renew.
- We remove the old, loose mastic.
- We pack any deep voids first.
- We apply the mastic by hand and shape it.
- We dress the finish so it sits neatly against the masonry.
Before we arrive
- Mention if the joints have been sealed before
- Mention any leaks or damp you’ve noticed
- Keep pets and children clear of the area while we work
Get a quote
For a quick quote, get us on the phone, or email us if that is easier. Tell us about the joints that need doing and we will talk you through the work before giving you a price.
Related advice
Nearby places to Sarre
More services for Sarre
Questions from Sarre
Will you come out to Sarre?
Yes. Sarre 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.
Can you help a landlord with a rental near Minster station?
Yes, landlords and agents are among the people we work for. You can ring 0345 464 0079 or drop us an email with the details for a clear quote.
Is it possible to take out silicone and use sand mastic instead?
In most cases. The silicone is cut out and the joint cleaned, then point it with sand mastic.
Do the sealants smell?
Some sealants have a smell while they cure, which fades as it sets. Opening a window helps.
Can I paint the new mastic?
Sand mastic is normally left unpainted, as guidance on traditional windows advises. Talk to us before any painting near it.
What guarantee comes with the work?
Our one-year guarantee covers every job.
How do I get a quote for sand mastic in Sarre?
The cost depends on the size of the job, access and how much old sealant has to come out. Ask us for a quote.
Should I try DIY first?
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 affects the cost of sand mastic
There’s no set price list. What we look at:
- How many rooms, windows or areas are involved
- How much there is to do
- Working hours on commercial sites
- Any mould that needs treating
Doing several joints on one visit generally makes better use of the time than several visits. We’ll send you a clear quote for the lot.
Helping us 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
- If it’s domestic, commercial or a hotel
- Whether it has been sealed before
- The problem you’ve noticed
To get a quote, phone 0345 464 0079 or drop us an email with the location and a short description of the problem. We will give you a clear quote before any work starts.
What happens if it’s left?
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. In a small place like Sarre, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
No two jobs are quite the same, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all play a part, and we’ll explain the quote if you ask.
Why Sarre clients choose us
- 12-month guarantee on every job
- Full insurance on every job
- Anti-fungal sanitary silicone in wet areas
- ARBOMaster approved applicator
Take a look at what affects the cost and what customers say.