East Sussex · England
Sand mastic for sash & case windows in Broad Street, East Sussex
Our applicators work in Broad Street on traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old sealant removed completely, joints prepared properly and a 12-month guarantee.
- Gaps where the frame meets the masonry
- Old cement repairs round a window that have failed
- Cracked mastic round a front door frame
Can I do it myself?
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
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.
Sand mastic for homes and businesses in Broad Street
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 period homes, it looks right where silicone wouldn’t. We work on sash and case windows, brick reveals and stone surrounds, and people most often call us about window mastic to renew ahead of painting and old sand mastic that has cracked, crumbled or fallen out.
Homes in small places like Broad Street 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.
Our work is backed for twelve months.
- Location
- Broad Street (TN36)
- Wider area
- East Sussex
- Guarantee
- One year on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Different surfaces, different methods
Timber door frames
Sand mastic is used round timber door frames too. We renew it the same way as on windows.
Sash and case windows
On a sash window, the mastic joint shows on the outside, so a neat, even finish matters.
Frames and glazing around Broad Street
Broad Street is within about 3 miles of 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. The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
In the older streets around The Parish Church of St Nicholas, the joint between an old wall and a newer frame is usually the first place rain gets in. Managing a site like Icklesham Church of England Primary School? Then the mastic around its windows and doors needs looking after like any other building’s.
Broad Street is about 5 miles north-east of Hastings, in East Sussex. Our applicators cover sand mastic for homes and businesses in Broad Street and the surrounding area, as part of our work across East Sussex. Our East Sussex coverage runs to 289 places, Broad Street among them. We also work in Brighton, about 35 miles from Broad Street.
All of TN36 is within our area for sand mastic, from the main roads to the quietest streets. Other places close to Broad Street include Icklesham (1 mile east), Udimore (1 mile north), Cock Marling (2 miles north-east), Three Oaks (2 miles south-west) and Broadland Row (2 miles north-west). We also work in nearby towns such as Hastings (5 miles south-west), Bexhill-on-Sea (9 miles south-west), St Leonards (6 miles south-west), Hastings Old Town (5 miles south-west), Belmont (5 miles south-west) and Hollington (5 miles south-west).
Near you in Broad Street
The nearest railway station is Doleham station, roughly 1.8 miles west. Other landmarks nearby include Camber Castle (3.7 miles east) and Winchelsea Court Hall Museum (2.5 miles east). Green spaces nearby include Flatropers Wood.
What happens on the day
On the day, there’s very little for you to do. Show us the job and we’ll take it from there. The work itself takes a few hours per window, depending on the condition of the joints from start to finish. For a village or hamlet like Broad Street, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided 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.
- The finish is dressed neatly.
Getting ready for the visit
- Tell us if parking is tricky
- Let us know about earlier repairs to the joints
- Clear the area around the work
Ask for a quote
For a quick quote, get us on the phone, or email us if that’s easier. Describe what needs sealing and we’ll talk you through the work and give you a clear price.
Read more
How to look after the new joints
After the cure time, these simple habits help:
- Avoid patching sand mastic with silicone
- Avoid heavy scraping on the mastic joint
- Leave the new mastic unpainted
- Have rotten timber repaired before new mastic goes in
Don’t run silicone over the new mastic. If anything cracks, get it looked at rather than patching it.
Small cracks are a sign the mastic is ageing. It’s easier to renew it before it drops out.
Broad Street questions
Do you work for landlords with property near Doleham station?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. Just call 0345 464 0079 or email us with the address and what needs doing, and we will give you a clear quote.
Does the coastal weather in Broad Street affect outside sealant?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
Can old silicone round a sash window be swapped for sand mastic?
Yes, it’s a common request. All the old silicone is removed first so the mastic can sit properly.
Is sand mastic better than silicone for my windows?
We will help you decide. Sand mastic suits many period homes, and modern sealants suit newer frames.
Is the work guaranteed?
There’s a 12-month guarantee on every job.
Which products do you use?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We’ll tell you what we’re using and why.
Should I try DIY first?
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.
Are you insured?
Yes. Mr Mastic is fully insured.
What affects the quote in Broad Street
The quote reflects the job in front of us. We take into account:
- Whether the work is at height
- How many rooms, windows or areas are involved
- The old material and how stubborn it is
- Working hours on commercial sites
Doing several joints on one visit is generally more efficient than separate visits, so it’s worth mentioning everything you’d like done. We’ll send you a clear quote for the lot.
Helping us quote
Photos by email are helpful but not essential. Try to tell us:
- If someone has resealed it before
- The problem you’ve noticed
- Where the property is
- If it’s domestic, commercial or a hotel
We don’t publish a price list, because every job is different. Instead, your job gets its own clear quote. To arrange one, ring 0345 464 0079 or drop us an email.
Places near Broad Street
Also in Broad Street
Why deal with it now?
Gaps round a sash window let in rain and draughts. Water can get to the frame and the masonry, so dealing with it now protects both. Around Broad Street, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
What you pay reflects the work, not a rough estimate. That’s why we ask a few questions first.
Why Broad Street customers choose us
- 4.9 on Google from 180+ five-star reviews
- Quality sealants from Arbo and Everbuild
- A 12-month guarantee on all work
- Anti-fungal sanitary silicone in wet areas
Take a look at what affects the cost and our reviews.
When to call us in Broad Street
Sand mastic slowly weathers. It hardens, cracks and starts to come away from the frame or the masonry.
People normally contact us after spotting one of these:
- Mastic dropping out of the joint
- Patchy fillers round a sash window
- Mastic worn away on windows facing the weather
- A silicone bead on a sash window that spoils the look
Letting a property close to Doleham station? Then older sash windows in a rental need their mastic kept sound to keep the weather out.
What your quote should include
- What happens if they find a problem under the old sealant
- What product goes in the joint
- Whether you can choose the colour
- Who does the work, and how experienced they are