East Sussex · England
Sand mastic for sash & case windows in Stone Cross, East Sussex
Our applicators work in Stone Cross on traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old material cut out, joints cleaned and sealed neatly and a 12-month guarantee.
- Cement or filler used on old window joints that has cracked
- A silicone bead on a sash window that spoils the look
- Draughts and rain around sash boxes
About our sand mastic in Stone Cross
Sand mastic has long been used to fill the joint between timber frames and masonry. It’s made from sand and a linseed-oil-based binder and built up by hand. On older homes, it suits the building far better than silicone. We work on stone surrounds, brick reveals and timber door frames, and people most often call us about failed mastic on an exposed elevation and gaps round a timber door in stone or brick.
Many houses in smaller places like Stone Cross have conservatories, garden rooms or patio doors. Those joints need the same attention as the main windows.
You are covered for a year from the day we finish. If anything is not right with it, phone 0345 464 0079 or drop us an email.
- Location
- Stone Cross (BN24)
- Wider area
- East Sussex
- Cover
- 12 months on all our work
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Can I do it myself?
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is.
How we quote for sand mastic
Some jobs are bigger than they look, and some smaller. What affects the quote:
- The type of sealant required
- Whether old sealant or filler has to be cut out
- The number of rooms or windows
- How easy the joints are to reach
Doing several joints on one visit is usually more efficient than separate visits. You’ll get one clear quote for the whole job.
What we need to know
You don’t need to know the technical terms. Just tell us:
- What the problem is, such as mould, gaps, leaks or cracking
- Photos by email, if that is easy
- If it’s domestic, commercial or a hotel
- Any access issues, like height or stairs
For sand mastic in Stone Cross, ring 0345 464 0079 or drop us an email. Tell us what the problem is and where, and you will get a clear quote before work begins.
Stone Cross questions
Will you come out to Stone Cross?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Does living near the coast affect sand mastic in Stone Cross?
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.
Do you guarantee sand mastic work?
There’s a 12-month guarantee on every job.
Should I try DIY first?
You can, for simple jobs. Preparation is everything: all the old sealant out, and a clean, dry joint. If it does not work out, we can redo it.
Do you remove the old sealant?
Yes, always, and completely. New silicone does not stick to old silicone, so the joint is cleaned back first.
Are you fully insured?
Yes. We are fully insured, and we have been doing sealant work for more than 20 years.
Is consent needed for window work on a listed home?
It’s best to ask your local planning authority first. Sand mastic is often favoured as like for like, but they decide.
Can you match the sealant colour?
Most of the time, yes. We will explain which colours are available and agree one before any work starts.
Do you need sand mastic in Stone Cross?
Timber swells and shrinks with the weather. That movement opens up the mastic joint over time.
Keep an eye out for these signs:
- Cement or filler used on old window joints that has cracked
- Mastic worn away on windows facing the weather
- A silicone bead on a sash window that spoils the look
- Old sand mastic that has cracked, crumbled or fallen out
Managing a site like Stone Cross School? Then its window and door frames need their mastic kept sound, just like a home’s.
Comparing quotes
- How the joint is cleaned and prepared
- Who turns up on the day
- When the joint can take water or movement
- What insurance they hold
Work for landlords, hotels and businesses
We regularly work with letting and managing agents. Tell us the address, the job and how access works.
Mouldy or split sealant often shows up at the end of a tenancy. Several properties can go on one quote.
Surface by surface
Period and listed homes
Materials matter on listed and conservation-area homes. Like-for-like sand mastic is generally favoured.
Stone surrounds
Old stone surrounds are often uneven, so the gap is not the same all the way round. Sand mastic is shaped by hand to suit.
Frames and glazing around Stone Cross
Stone Cross is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That is hard on the mastic around older windows and doors, especially on the side facing the sea. London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For an older house near a landmark such as St Luke's Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame. Letting a property close to Pevensey & Westham station? Then any sash windows need sound mastic to keep draughts and rain out.
Stone Cross is about 2 miles north of Eastbourne, in East Sussex. If you need sand mastic in Stone Cross, it’s easy to get a quote: please ring 0345 464 0079 or email us. We cover East Sussex from our Crawley base. 289 places in East Sussex are on our list, large and small. Brighton is on our list too, around 19 miles away.
Postcode districts we cover here for sand mastic: BN24. Sand mastic is available to properties on Millers Keep, Geering Road and Nutley Mill Road. We also cover the places around Stone Cross: Blackness (1 mile north-west), Hankham (1 mile north), Willingdon (2 miles south-west), Lower Willingdon (2 miles west) and Polegate (2 miles west). Further out, we also cover Hastings (12 miles east), Bexhill-on-Sea (8 miles east), Seaford (9 miles west), Lewes (13 miles west), Hailsham (4 miles north-west) and St Leonards (11 miles east).
Landmarks near Stone Cross
Around Stone Cross, our work takes us to homes and buildings near The Red Lion pub and Causeway School. Stone Cross’s nearest station is Pevensey & Westham station, roughly 1.3 miles east. Other landmarks nearby include Eastbourne District General Hospital (2.4 miles south-west) and Pevensey Court House Museum And Gaol (1.6 miles east). Not far away are Combe Hill.
What happens if it’s left?
Not every filler suits an old window surround. Sand mastic matches what was there and that can be important for listed homes. In a smaller place like Stone Cross, wherever a wall is exposed, a failed outside joint is a real source of damp. Indoors, a failed seal lets water into floors and panels as it would anywhere.
Leaving a failed joint normally makes the job bigger, not smaller, because water and mould keep working on it. If you are unsure, ring 0345 464 0079 or send us an email and we’ll give you an honest view and a quote.
Why book with us
- Rated 4.9 stars on Google
- Any old sealant cut out fully, not covered over
- Fully insured
- Anti-fungal sanitary silicone in wet areas
Nearby places to Stone Cross
Also in Stone Cross
The process
Every visit runs the same way: we look at the joints together, protect the area around them, do the work and clear up. It usually takes a few hours per window, depending on the condition of the joints. Parking around Stone Cross is generally easier than in a town centre, but mention any lanes, gates or long drives. If the job is outside, tell us about side access and how high the joints are.
- We look at the surrounds with you and agree the joints to renew.
- 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.
How to prepare
- Clear the area around the work
- Mention any parking rules near the property
- Plan for the work area to be out of bounds to pets and children
Ask for a quote
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we’ll talk you through the work before giving you a price.