East Sussex · England
Sand mastic for sash & case windows in Hailsham, East Sussex
Specialist sand mastic for Hailsham: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- A silicone bead on a sash window that spoils the look
- Old cement repairs round a window that have failed
- Cracked mastic round a front door frame
Looking after it afterwards
After the cure time, these simple habits help:
- Keep sills and gutters clear so water drains away
- Sort the mastic before the decorators arrive
- Take care around the mastic when scraping paint
- Have rotten timber repaired before new mastic goes in
Do not run silicone over the new mastic. If you see a crack, ask us to take a look rather than patching it.
Good mastic helps keep the frame dry. Failed mastic lets water reach the timber, which can lead to rot.
Sand mastic in Hailsham
Old sand mastic cracks, crumbles and falls out over time and gaps open up round the frame. Renewing it closes the gap and tidies the surround. If you have old cement repairs round a window that have failed and mastic that needs renewing before redecorating, we can help, on timber door frames, sash and case windows and period & listed homes alike.
In a town like Hailsham, older houses sit alongside newer estates, with windows of every age. All of them depend on a sound bead of mastic between frame and wall.
The work is guaranteed for twelve months. If something isn’t right with it in that time, tell us and we’ll put it right.
- Place
- Hailsham (BN27)
- Wider area
- East Sussex
- Guarantee
- 12 months on all our work
- Quote
- A clear price before work begins
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Towns and villages near Hailsham
Other services in Hailsham
Honest limits
We’d rather tell you now than do work that will not last, so here’s what sealant cannot put right:
- Broken panes
- Damaged stone surrounds
- Sash cords, weights and draught-proofing of the sashes
Not sure which it is? You can ring 0345 464 0079 or email us and we will tell you honestly.
What we seal
- Timber door frames
- Tenement windows
- Stone surrounds
- Period & listed homes
- Brick reveals
- Sash and case windows
What we’re called out for in Hailsham
Decorating can disturb tired mastic. It’s often found when windows are being prepared for paint.
If you can see any of these, it’s time to have the joints looked at:
- Mastic round period door frames that has failed
- Gaps between timber frames and stone or brick
- Old sand mastic that has cracked, crumbled or fallen out
- Draughty sash windows at the surround
For an older house near a landmark such as The Parish Church of Saint Mary, the joint between an old wall and a newer frame is usually the first place rain gets in.
Questions to ask before booking
- Is the old sealant removed completely?
- Is VAT in the price?
- Are they insured?
- Which colour the sealant will be
How the job changes by surface
Tenement and terrace windows
Tenements and terraces often have many sash windows with ageing mastic. We can do one window or several.
Period and listed homes
Sand mastic is the like-for-like choice for many period homes. If your home is listed, ask your local planning authority about consent.
Landlord and commercial work in Hailsham
Housing providers, facilities teams and property managers book us too. We can quote a run of properties together.
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we will give you a quote.
Frames and glazing around Hailsham
Historic houses like Horselunges Manor (about 1.5 miles north) are a reminder that the area around Hailsham 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. Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Managing a site like Hailsham Community College? Then larger buildings have plenty of frames, and the mastic around each one ages. Letting a property close to Polegate station? Then any sash windows need sound mastic to keep draughts and rain out.
Hailsham is about 6 miles north of Eastbourne, in East Sussex. Hailsham gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Our area takes in 289 places across East Sussex, large and small. Brighton is on our list too, around 17 miles away.
Postcode districts we cover here for sand mastic: BN27. Whether your property is on High Street, Market Place and Station Road or a nearby road, our applicators can take on the job. Main roads around Hailsham include the A271 and A295, which makes travel easy. Nearby, we also carry out sand mastic in Tile Hurst (1 mile north-west), Upper Horsebridge (1 mile north), Hellingly (1 mile north), Lower Horsebridge (1 mile north-west) and Magham Down (2 miles north-east). We also work in nearby towns such as Eastbourne (6 miles south), Hastings (13 miles east), Bexhill-on-Sea (9 miles east), Seaford (9 miles south-west), Lewes (11 miles west) and Crowborough (14 miles north). Hailsham is one of the larger places we cover in East Sussex.
Local landmarks in Hailsham
Around Hailsham, our work takes us to homes and buildings near The Grenadier pub and White House Academy, among other places. The closest station to Hailsham is Polegate station, roughly 3 miles south. Nearby you’ll also find Herstmonceux Castle (3.6 miles east) and Amberstone Hospital (1.5 miles north-east). Open spaces near Hailsham include Combe Hill.
How it works
You do not need to clear the whole room or building before we come, only the area right around the joints. Everything nearby is protected, and the work takes a few hours per window, depending on the condition of the joints for a typical job. Parking in a town like Hailsham 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.
- We rake out the old mastic and clean the joint.
- Large voids are packed out first, so the mastic isn’t too thick.
- The mastic is mixed, pressed into the joint by hand and shaped.
- The mastic is finished to sit tidily against the stone or brick.
Before we arrive
- Mention if the joints have been sealed before
- Clear items away from the joints we are working on
- Let us know about parking restrictions
How to get a quote
Every job is quoted individually, so start by telling us what you need. Simply phone 0345 464 0079 or drop us an email and describe the job and send pictures if you have them.
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FAQs for Hailsham
What guarantee comes with sand mastic in Hailsham?
All our work, in Hailsham and everywhere else, comes with a 12-month guarantee. We’re also fully insured and ARBOMaster approved.
Can you do sand mastic in Hailsham?
Yes. We work across London and the South East, and Hailsham is part of that. You can ring 0345 464 0079 or drop us an email and let us know what needs doing, and we’ll give you a clear quote.
Is it OK to seal over old sealant?
No. We remove every bit of old sealant first, so the new joint bonds to clean surfaces.
Do you do commercial work?
Yes. We work in offices, washrooms, hotels and other commercial premises. Working times can be discussed when we quote.
Can tenants book the work?
Of course. Ask your landlord first, and we can send them the quote if that helps.
How long does sand mastic take to go off?
Not straight away. It skins first and hardens fully later and we’ll give you an idea for your job.
Will you leave a mess?
We keep the work tidy. We protect what’s around the joints, and we clear up when we’re done.
What should I tell you?
Where the job is, what the problem is and roughly how big it is. If you can, email a few photos.
DIY sealant or a professional job?
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.