East Sussex · England
Sand Mastic in Magham Down
Sand mastic across Magham Down and nearby, with every bit of old sealant taken out first.
- Wind and rain getting in round a sash window
- Cement or filler used on old window joints that has cracked
- A silicone bead on a sash window that spoils the look
Sand mastic for homes and businesses in Magham Down
If your home is listed or in a conservation area, check with your local planning authority whether consent is needed for work to windows. Like-for-like sand mastic is often the preferred finish. Typical jobs include old cement repairs round a window that have failed and cracked mastic round a front door frame, on sash and case windows, timber door frames and brick reveals.
Outdoor sealant needs dry, clean surfaces, so work on frames around Magham Down is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
There’s a 12-month guarantee on every job, whatever its size.
- Where
- Magham Down (BN27)
- Region
- East Sussex
- Cover
- A year, on every job
- Price
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Your questions about sand mastic in Magham Down
Is Magham Down in your area for sand mastic?
Yes. Our work covers London and the South East, and Magham Down is part of that. You can call 0345 464 0079 or email us and let us know what needs doing, and we will send you a clear quote.
Do you work for landlords with property near Polegate station?
Yes, landlords and agents are among the people we work for. You can phone 0345 464 0079 or drop us an email with the details for a clear quote.
Which products do you use?
Products from Arbo and Everbuild, among others, picked for each joint. We explain the product when we quote.
What exactly is sand mastic?
It’s sand mixed with a linseed-oil-based binder for the joint between timber frames and masonry.
Are you an approved applicator?
Yes. Mr Mastic is an ARBOMaster approved applicator, and we are fully insured.
How long does sand mastic take to harden?
A skin forms quite soon, but full hardening takes longer. We will tell you what to expect for your job.
Do you have insurance?
Yes. Full insurance covers our work.
Does someone need to be in?
We need access to the joints, so we’ll agree that with you when we book. For inside work, that normally means someone being in.
How the visit works
On the day, we start by going over the job with you, so you know exactly what we’re doing. We protect the surfaces around the joints before we start. The work normally takes a few hours per window, depending on the condition of the joints. Somewhere as small as Magham Down, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- We start by checking each surround and agreeing the joints to renew.
- We rake out the old mastic and clean the joint.
- 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.
- The mastic is finished to sit tidily against the stone or brick.
Getting ready for the visit
- Keep pets and children clear of the area while we work
- Mention any sign-in or site rules at work premises
- Clear the area around the work
How to get a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we will explain how we’d tackle it. Whenever you’re ready, call 0345 464 0079 or email us.
Related advice
Honest limits
A few problems are outside what sealant work can do:
- Sashes that need overhauling
- Timber that has rotted
- Crumbling stone or brickwork round the window
If in doubt, call 0345 464 0079 or send us an email and we’ll say what we think before booking.
Surfaces we seal
- Period & listed homes
- Timber door frames
- Sash and case windows
- Brick reveals
- Tenement windows
- Stone surrounds
Keeping the joints in good condition
Good habits help new joints last longer. Our tips:
- Sort the mastic before the decorators arrive
- Check the mastic when you check the paintwork
- Avoid heavy scraping on the mastic joint
- Get any rot dealt with first
Avoid sealing over the mastic with silicone. If anything cracks, get it looked at rather than patching it.
Fine cracks show the mastic is starting to fail. Renewing it then is simpler than waiting until it falls out.
Nearby places to Magham Down
Other services in Magham Down
Why it’s worth doing now in Magham Down
Before painting the windows, it pays to renew the mastic. Painting over failed mastic does not seal it and traditional guidance is to leave the new mastic unpainted. Where a wall is exposed, as many are in small places like Magham Down, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs, plus any working-time requirements on site. Ask us for a quote and we will go through it with you.
Why Magham Down customers choose us
- A 12-month guarantee on all work
- We are fully insured
- 180+ five-star Google reviews
- More than 20 years in sealant work
Take a look at how sealant jobs are priced and customer reviews.
Can I do it myself?
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions.
A careful DIYer can reseal a simple joint, 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.
How we quote for sand mastic
Call for a quick quote. What matters most is:
- How many rooms, windows or areas are involved
- Which sealant suits the joint
- How easy the joints are to reach
- The number and length of the joints
Combining jobs into one visit is usually more efficient than separate visits, so it’s worth mentioning everything you’d like done. We’ll give you a clear quote for the lot.
Asking for a quote
Before you ask for a quote, have a think about:
- A few pictures by email, if you can
- Any previous sealing or DIY work
- The address or postcode of the job
- Access, such as stairs, a lift or height
Asking for a quote is easy: tell us what needs doing and where and its rough size. A few photos by email make the job easier to understand.
Common problems we fix in Magham Down
Decorating can disturb tired mastic. It’s often found when windows are being prepared for paint, which is a good time to renew it.
The most common problems we see are:
- Draughty sash windows at the surround
- Old cement repairs round a window that have failed
- Gaps where the frame meets the masonry
- Window mastic to renew ahead of painting
If you let a flat or house near Polegate station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
Before you book anyone
- Are they insured?
- How long the guarantee is
- How hidden problems are handled
- What preparation is included
Frames and glazing around Magham Down
Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. Historic houses like Horselunges Manor (about 1.7 miles west) are a reminder that the area around Magham Down has older buildings as well as new. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic.
Managing a site like Hailsham Community College? Then the mastic around its windows and doors needs looking after like any other building’s. Horselunges Manor, about 1.7 miles west, is one of the historic houses in the wider area around Magham Down.
Magham Down is about 2 miles north-east of Hailsham, in East Sussex. We provide sand mastic to householders, landlords and businesses in Magham Down and the surrounding area, as part of our work across East Sussex. Magham Down is one of 289 towns and villages in East Sussex we cover for sand mastic. We also work in Brighton, around 18 miles away.
Work in BN27 works the same way as everywhere else we cover. Sand mastic is available to properties on Old Road and Nodes Lane and the roads around them. Close by, we work in Hellingly (1 mile west), Upper Horsebridge (1 mile west), Hailsham (2 miles south-west), Lower Horsebridge (2 miles west) and Tile Hurst (2 miles west). Further out, we also cover Eastbourne (7 miles south), Hastings (12 miles east), Bexhill-on-Sea (8 miles east), Seaford (11 miles south-west), Lewes (12 miles west) and Crowborough (13 miles north-west).
Local landmarks in Magham Down
Magham Down’s nearest station is Polegate station, roughly 4.5 miles south-west. A little further out are Amberstone Hospital (0.5 miles west) and Herstmonceux Castle (2.4 miles east).