East Sussex · England
Sand Mastic in Sidley
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in Sidley, with a 12-month guarantee on every job. Call for a quick quote.
- Mastic round period door frames that has failed
- Modern sealant on a period surround
- Cement or filler used on old window joints that has cracked
Sand mastic for homes and businesses in Sidley
Old sand mastic cracks, crumbles and falls out over time and gaps open up round the frame. Renewing it closes the gap so the surround looks right again. We work on brick reveals, sash and case windows and timber door frames, and common reasons people get in touch are gaps round a timber door in stone or brick and weathered mastic on the most exposed windows.
Many houses in smaller places like Sidley have conservatories, garden rooms or patio doors. Their glazing joints and frame seals are as much a part of the job as the windows.
A one-year guarantee comes as standard, so you are not left on your own once the job is done.
- Place
- Sidley (TN39, TN40)
- Region
- East Sussex
- Cover
- One year on every job
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Common questions in Sidley
Will you come out to Sidley?
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.
Does the coastal weather in Sidley affect outside sealant?
Coastal homes put outside sealant through more weather than inland ones, so the choice of sealant and the preparation matter even more. It’s worth checking the walls that face the sea first.
How do I get a quote for sand mastic in Sidley?
There’s no set price, as it depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
Is it possible to take out silicone and use sand mastic instead?
Yes, it’s a common request. All the old silicone is removed first so the mastic can sit properly.
Are you insured?
Yes. Mr Mastic is fully insured, and we have been doing sealant work for more than 20 years.
Will there be a smell?
That depends on the sealant. Some products have a noticeable smell, others very little.
Can tenants book the work?
Of course. Ask your landlord first, and we can send them the quote if that helps.
Where are you based?
We are based in Crawley, and we cover South East England, London and all of Scotland.
What sealant work can’t fix
To be straight with you, some problems need a different trade:
- Putty and glazing repairs
- Sash cords, weights and draught-proofing of the sashes
- Timber that has rotted
Not sure which it is? You can ring 0345 464 0079 or send us an email and we will tell you honestly before booking.
Joints and surfaces we work on
- Stone surrounds
- Period & listed homes
- Sash and case windows
- Timber door frames
- Brick reveals
- Tenement windows
DIY sealant or a professional job?
The biggest DIY mistake is sealing over old sealant. Silicone does not stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.
If you’ve already had a go yourself, that’s fine. We cut it out and start again, so tell us about it when you ask for a quote.
Landlords, agents and businesses in Sidley
From a single let to a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a 12-month guarantee.
If you manage several properties in or around Sidley, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs, and photos by email help.
How we quote for sand mastic
We quote each job individually. This is what makes a difference:
- Which sealant suits the joint
- Any working-time requirements on site
- How many areas need sealing
- How much there is to do
There are no prices on our website, because the cost depends so much on the job itself. Call for a quick quote and we will talk you through it.
Asking for a quote
To make quoting easier, let us know:
- The problem you’ve noticed
- Any previous sealing or DIY work
- Where the property is
- Photos by email, if that is easy
Getting a quote is simple: let us know the job and the location and its rough size. Photos by email help us understand the job, and we’ll come back to you with a quote.
Nearby places to Sidley
What else we do in Sidley
What sand mastic looks like in Sidley
Sidley is within about 2 miles of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That’s hard on the mastic around older windows and doors, especially on the side facing the sea. The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
If you let a flat or house near Bexhill station, any sash windows need sound mastic to keep draughts and rain out. Schools such as All Saints Church of England Primary School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s. If you live in an older home near Church of All Saints, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Sidley is about 1 mile north of Bexhill-on-Sea, in East Sussex. We provide sand mastic to homeowners, landlords and businesses in Sidley. Sidley is one of 289 places in East Sussex where we work for sand mastic. Our Brighton page covers work nearby, about 26 miles away.
Every address in TN39 and TN40 is covered for sand mastic, from the main roads to the quietest streets. We cover properties on Mayo Lane, Bank Road and North Road. Sidley sits on or near the A2691, so getting to you is simple. If you are just outside Sidley, we cover Bexhill-on-Sea (1 mile south), Watermill (1 mile north), Lunsford's Cross (2 miles north-west), Russell's Green (3 miles north-west) and Hooe Common (3 miles west). Within a short drive, we also cover Eastbourne (9 miles south-west), Hastings (4 miles east), Hailsham (9 miles west), St Leonards (4 miles east), Polegate (10 miles west) and Hastings Old Town (5 miles east).
Around Sidley
In Sidley, that means homes and buildings near The New Inn, Bexhill High Academy and Egerton Park, among other places. For rail, the closest station is Bexhill station, roughly 1.4 miles south. Other landmarks nearby include Bexhill Hospital (0.7 miles south) and Bexhill Costume And Social History Museum (1.2 miles south). Open spaces near Sidley include Senlac Hill and Gillham Wood.
What we do, step by step
We work through the job in order: protection first, then preparation, sealing and a tidy-up. For most jobs that takes a few hours for a single window, longer for several, and the area is left clean. A visit to Sidley is planned like any other: the time, the access and where to park are agreed in advance. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- First, we look at the surrounds with you and agree what needs doing.
- The loose and crumbling mastic is raked out and the joint cleaned.
- Deep voids are packed so the mastic is the right thickness.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The finish is dressed so it sits neatly against the stone or brick.
Getting ready for the visit
- Keep children and pets away from the work area
- Mention any tricky access
- Where the joints are inside, avoid wetting them before we arrive
Get a quote
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 pictures by email if you can.
Advice
Looking after it afterwards
Aftercare is simple:
- Ask the planning authority about consent for listed or conservation-area homes
- Clear gutters so water does not pour onto the windows
- Sort the mastic before the decorators arrive
- Ask us before painting near the mastic
Make sure water drains away from the window surround. Water sitting against the mastic shortens its life.
Sound mastic protects the frame. Failed mastic lets water reach the timber and timber that stays wet can rot.
How the job changes by surface
Timber door frames
A neat sand mastic joint round a front door suits a period home.
Brick reveals
Gaps between frame and brick let in rain and draughts. New mastic seals the gap.