Kent · England
Sand mastic for sash & case windows in Hythe, Kent
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in Hythe, with a 12-month guarantee on every job. Call for a quick quote.
- Silicone on a period window that looks wrong
- Gaps where the frame meets the masonry
- Gaps round a timber door in stone or brick
How we handle sand mastic in Hythe
Silicone on a period window often looks wrong and is not always the right material. Sand mastic gives a finish that matches the age of the house, and we can replace one with the other. Typical jobs include mastic round period door frames that has failed and mastic worn away on windows facing the weather, on brick reveals, period & listed homes and tenement windows.
Hythe mixes older streets, where windows have often been replaced, with newer estates fitted with uPVC. All of them depend on a sound bead of mastic between frame and wall.
Whatever the size of the job, you get the same 12-month guarantee.
- Place
- Hythe (CT21)
- Wider area
- Kent
- Cover
- One year on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Hythe questions
Can you help a landlord with a rental near Sandling station?
Yes. We work for letting agents and landlords as well as householders, and several properties can go on one quote. Just phone 0345 464 0079 or drop us an email with the address and what needs doing, and we will give you a clear price.
Do you cover Hythe for sand mastic?
Yes. Our work covers London and the South East, and Hythe is part of that. Just phone 0345 464 0079 or send us an email with a few details of the job, and we’ll send you a clear quote.
Is it worth trying it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
Do I need permission for sand mastic on a listed building?
It’s best to ask your local planning authority first. Like-for-like sand mastic is often the preferred finish but the decision is theirs.
When will the new mastic be hard?
The surface skins quite quickly, then hardens over a longer period. The weather and joint depth both affect it.
Do you do commercial work?
Yes. We’ve worked for hotels, offices and other businesses.
Is sand mastic better than silicone for my windows?
Sand mastic usually suits period timber windows best. On modern frames, we’d normally use a flexible sealant.
Can you seal over the old sealant?
No, it won’t last. It may look fine at first, but the new bead soon lifts. The old sealant has to come out completely.
Nearby places to Hythe
More services for Hythe
For landlords and businesses
Hotels need rooms back in use, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
For anyone letting property in or around Hythe, several properties can be quoted together. Just tell us the addresses and what each one needs.
How it works
When we arrive, we start by going over the job with you, so you know exactly what we are doing. We protect the surfaces around the joints before any work begins. Most jobs take a few hours per window, depending on the condition of the joints. Parking in a town like Hythe is usually straightforward, but tell us if there’s a driveway or any restrictions, and mention if the work is upstairs, in a flat or high on the outside.
- We start by checking each surround and agreeing the joints to renew.
- Old, loose mastic is raked out and the joint cleaned.
- We pack any deep gaps so the mastic sits at the right depth.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- We dress the surface so it sits neatly against the masonry.
Getting ready for the visit
- Mention any sign-in or site rules at work premises
- Mention if the joints have been sealed before
- Keep children and pets away from the work area
Getting a quote
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, and we will take it from there.
Advice
Looking after it afterwards
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Get any rot dealt with first
- Find out about consent before window work on a listed home
- Make sure water runs off the sill
- Look over the window mastic once a year
Don’t run silicone over the new mastic. If you see a crack, ask us to take a look before trying a quick fix.
Renewing mastic before redecorating saves doing it twice. Painting over failed mastic hides the problem for a while.
Why it’s worth doing now in Hythe
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. Gaps in sealant and mould in the bead never get better on their own, and in a busy home in Hythe they get worse with every use. Replacing the sealant now is the simplest fix.
The cost depends on how much there is to do, how hard the old material is to remove and access to the work. You’ll have a clear quote before any work starts.
What you get with us
- An ARBOMaster approved applicator
- Over 20 years’ experience
- Neat joints and a tidy finish
- 12-month guarantee on every job
What sand mastic looks like in Hythe
Hythe is within about 1 mile of 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. Historic houses like Westenhanger Castle (about 2.7 miles north-west) are a reminder that the area around Hythe has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
Schools such as Hythe Bay CofE Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s. For an older house near a landmark such as Church of St Michael and All Angels, frames set in older brick or stone need a sealant that suits the wall as well as the frame. If you let a flat or house near Sandling station, older sash windows in a rental need their mastic kept sound to keep the weather out.
Hythe is about 4 miles west of Folkestone, in Kent. Our applicators cover sand mastic for homeowners, landlords and businesses in Hythe, as part of our work across Kent. 922 places in Kent are on our list, from the larger towns to small villages. Our Chelmsford page covers work nearby (53 miles or so).
Our applicators cover all of the CT21 postcode area for sand mastic and the streets around it. We cover properties on High Street, Church Road and Station Road. Hythe sits on or near the A259 and A261, which makes travel easy. Neighbouring places we cover for sand mastic include Saltwood (1 mile north), Sandling (1 mile north-west), Pedlinge (1 mile north-west), Palmarsh (2 miles south-west) and West Hythe (2 miles west). Larger places within reach include Ashford (10 miles north-west), Canterbury (14 miles north), Dover (11 miles north-east), Folkestone (4 miles east), Tower Hamlets (10 miles north-east) and Hawkinge (4 miles north-east).
Landmarks near Hythe
We work in homes and buildings around Oaklands Park, Red Lion Public House and Brockhill Park Performing Arts College, among other places. The closest station to Hythe is Sandling station, roughly 1.4 miles north-west of the centre. Nearby you’ll also find Saltwood Castle (0.7 miles north) and Royal Victoria Hospital (4.1 miles east). The countryside around Hythe includes Tolsford Hill.
What sealant work can’t fix
We’ll always be straight with you, so here’s what sealant cannot fix:
- Broken panes
- Decisions on consent for listed homes
- Sashes that rattle, stick or won’t open
If you are not sure, just phone 0345 464 0079 or email us and we’ll give you a straight answer before booking.
Where we work in Hythe
- Tenement windows
- Brick reveals
- Timber door frames
- Sash and case windows
- Period & listed homes
- Stone surrounds
Different surfaces, different methods
Timber door frames
Period doors in stone or brick openings are often pointed with sand mastic. We renew it the same way as on windows.
Period and listed homes
Many older homes were built with sand mastic round the windows. If your home is listed, ask your local planning authority about consent.
Quotes for sand mastic in Hythe
We quote each job individually. These are the things that affect it:
- How many rooms, windows or areas are involved
- The old material and how stubborn it is
- The type of sealant required
- The size of the job
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you are unsure, phone 0345 464 0079 or send us an email for an honest opinion and a quote.
What we need to know
Before you ask for a quote, have a think about:
- What the problem is, such as mould, gaps, leaks or cracking
- If it’s domestic, commercial or a hotel
- The address or postcode of the job
- Roughly how big the job is
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and add photos by email if you can.