East Sussex · England
Southover Window Mastic
Window mastic in Southover from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Leaking joints at the ends of sills
- Gaps left after new windows were fitted
- Mastic that has split away from the wall
What happens if it’s left?
Running fresh sealant over the old joint is tempting, but new sealant cannot bond to old, crumbling mastic. It peels before long, and water still gets in behind. Proper resealing starts with removing the old joint. In a smaller place like Southover, wherever a wall is exposed, a failed outside joint is a real source of damp. Inside, a split seal lets water into floors and panels just as it would anywhere.
A few things move the cost up or down: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether we need extra access for height. We take all of that into account in your quote.
Why book with us
- 20+ years of sealant experience
- Fully insured
- Old sealant always removed completely
- Anti-fungal silicone where joints get wet
See what affects the cost or our reviews.
Window mastic for homes and businesses in Southover
The new joint doesn’t have to be white. White, brown, anthracite grey, black and clear sealants are all available, so the bead blends with the window rather than framing it. Typical jobs include sealant in the wrong colour for the frame and draughty joints inside around the window, on window sills, timber windows & doors and patio & French doors.
Houses in smaller places like Southover can stand more in the open than those in a built-up town, so exposed windows and doors face the weather head on. That is hard on the mastic around frames and sills.
The work is guaranteed for twelve months. If something is not right with it in that time, tell us and we will put it right.
- Where
- Southover (BN7, BN8)
- Wider area
- East Sussex
- Guarantee
- A year, on every job
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Can I do it myself?
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Common questions in Southover
Is Southover within the area you cover?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
I let a flat near Lewes station. Can you help?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. Just call 0345 464 0079 or send us an email with the address and what needs doing, and we’ll give you a clear quote.
Can you seal over the old sealant?
No, it will not last. It may look fine at first, but the new bead soon lifts. Removing the old sealant completely is the only lasting way.
Does someone need to be in?
For indoor joints, yes, someone needs to let us in. Once we have agreed the job, you do not need to watch us work.
Are you fully insured?
Yes. Full insurance covers our work, and we can confirm the details when we quote.
Is it messy?
Not at all. The area is protected while we work and cleaned up afterwards.
Will new mastic stop draughts?
If the draught is coming in around the frame, yes. If it’s through the window’s own seals or a hinge, that is a different fix, and we will say so.
Can you match the sealant to my frames?
Yes. White, brown, anthracite grey, black and clear sealants are all available.
Different surfaces, different methods
Patio & French doors
Door frames take knocks and movement every time the doors are used. A flexible sealant copes with that.
Composite doors
Draughts round the door leaf usually come from worn seals or adjustment, not the mastic. We’ll tell you if that is what we find.
Places near Southover
More services for Southover
Quotes for window mastic in Southover
Your quote is based on your job. We look at:
- Any working-time requirements on site
- Which sealant suits the joint
- The amount of work
- Whether there’s mould to deal with
What it costs depends on the size of the job, how hard the old material is to remove and access to the work. We give a clear quote before we start, so you know where you stand.
Helping us quote
Photos help, but a description is a good start. Try to tell us:
- How many joints, rooms or windows are involved
- Whether it’s a home or a business
- Pictures of the joints, sent by email
- If someone has resealed it before
We don’t publish a price list. Instead, your job gets its own clear quote. To arrange one, ring 0345 464 0079 or drop us an email.
What happens on the day
On the day, there’s very little for you to do. Point us to the joints and we’ll get on with it. The work itself takes a few hours for a handful of frames, longer for a whole house from start to finish. In a smaller place like Southover, parking is seldom the issue; lanes, gates and long drives are worth mentioning. For outside work, side access and the height of the joints help us plan.
- Each frame is looked over and we agree which ones need resealing.
- We remove the old mastic and clean the frame edge and wall.
- Where the gap is deep, backing rod goes in first.
- A flexible exterior sealant is applied in a colour to suit the frame.
- We tool each bead neatly and check every joint is closed.
How to prepare
- Mention any parking rules near the property
- Mention any sign-in or site rules at work premises
- Move anything stored near the joints
How to get a quote
We quote each job on its own. Simply call 0345 464 0079 or drop us an email and describe the job, and photos are welcome.
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What window mastic looks like in Southover
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Historic houses like Anne of Cleves House (about 0.2 miles south-west) are a reminder that the area around Southover has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
For site and facilities teams at buildings such as Western Road Community Primary School, the mastic around its windows and doors needs looking after like any other building’s. In the older streets around Church of St Michael, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. Letting a property close to Lewes station? Then cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Southover is about 1 mile south-east of Lewes, in East Sussex. For window mastic in and around Southover, please ring 0345 464 0079 or drop us an email for a quick quote. We’re based in Crawley and cover East Sussex, Southover included. Our area takes in 289 places across East Sussex, from the larger towns to small villages. We also work in Brighton, around 7 miles away.
Jobs for window mastic in BN7 and BN8 works the same way as everywhere else we cover. Streets in the area include Ham Lane, New Road and Bell Lane. With the A277 and A2029 close by, Southover is easy for our applicators to reach. If you’re just outside Southover, we cover Cliffe (1 mile north-east), Lewes (1 mile north-west), South Malling (1 mile north), Iford (2 miles south-west) and Offham (2 miles north-west). Larger places within reach include Eastbourne (13 miles south-east), Seaford (8 miles south-east), Hailsham (11 miles east), Crowborough (14 miles north-east), Uckfield (8 miles north-east) and Newhaven (6 miles south).
Landmarks near Southover
Locally, jobs take us to homes and businesses close to Kings Head pub, Priory School and Railway Land, among other places. Southover has its own railway station: Lewes station. Other landmarks nearby include Lewes Castle (within half a mile north-west) and Museum of Agricultural Bygones (3.9 miles north-east). Green spaces nearby include Cliffe Hill and Southerham Farm.
Work for landlords, hotels and businesses
Housing providers, facilities teams and property managers book us too in Southover and across East Sussex. We can quote a run of properties together, and we are fully insured for the work.
We regularly work with letting and managing agents. Tell us the address, the job and how access works.
Keeping the joints in good condition
To keep the joints looking good and working properly:
- Keep timber frames painted
- Air rooms to keep condensation down around windows
- Clear any debris from frame drain holes
- Avoid blasting the frames with a pressure washer
Wipe the frames with soapy water when you clean the windows, and avoid solvent cleaners on the sealant.
Wet, windy weather is when failed mastic shows itself, but sealant goes on best when frames and walls are dry. Sorting cracked mastic early means the joint is sound before the bad weather.