East Sussex · England
Window Mastic in Telscombe
Window mastic in Telscombe from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Cracked internal joints between frame and plaster
- Mastic that has split away from the wall
- Black, perished sealant on frames
About our window mastic in Telscombe
The mastic around a window or door seals the gap between the frame and the wall. Once that seal fails, wind and rain find the gap. The old mastic is removed and the joint resealed with a flexible exterior sealant. We are often asked to deal with whistling draughts around closed windows and gaps left after new windows were fitted, across composite doors, aluminium frames and window sills.
In a smaller place like Telscombe, some walls face open ground and catch the full force of the weather. The mastic around frames on those walls tends to age faster.
Each job carries a 12-month guarantee, whatever its size.
- Where
- Telscombe (BN10, BN2, BN7)
- Wider area
- East Sussex
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
How to look after the new joints
A little care helps the new joints last. We recommend:
- Paint up to the joint, not over it
- Keep paint and stain on wooden frames in good order
- Keep drainage slots and sill grooves clear
- Use gentle cleaners on frames and sealant
Wipe the frames with soapy water when you clean the windows, and avoid solvent cleaners on the sealant.
Draughts get worse, not better. As old mastic keeps shrinking, the gap widens, and a cold room gets colder. A new joint closes it up.
How it works
There isn’t much for you to do on the day. Show us the job and we will take it from there. The job generally takes a few hours for a handful of frames, longer for a whole house, including the tidy-up. In a smaller place like Telscombe, 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.
- First, we go round the frames with you and agree the list.
- We remove the old mastic and clean the frame edge and wall.
- Deep gaps get closed-cell backing rod to set the depth.
- The new sealant goes on in white, brown, anthracite grey, black or clear to suit.
- We tool each bead neatly and check every joint is closed.
Getting ready for the visit
- Mention any sign-in or site rules at work premises
- Clear the area around the work
- Let us know about earlier repairs to the joints
How to get a quote
We quote each job on its own, so the first step is telling us about yours. Simply ring 0345 464 0079 or email us and describe the job.
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Telscombe homes and the weather
Telscombe 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 window and door frames, especially on the side facing the sea. With historic houses such as Monk's House (about 2.7 miles north-east) nearby, there’s older building stock in the area around Telscombe as well as newer homes. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
Homes close to The Parish Church of St Lawrence include some older properties, and the joint between an old wall and a newer frame is usually the first place rain gets in. If you let a flat or house near Southease station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first. Managing a site like Telscombe Cliffs Community Primary School? Then the mastic around its windows and doors needs looking after like any other building’s.
Telscombe is about 6 miles east of Brighton, in East Sussex. We provide window mastic to homes and businesses in Telscombe and the surrounding area. 289 places in East Sussex are on our list. We also work in Brighton, around 6 miles away.
All of BN10, BN2 and BN7 is within our area for window mastic, from the main roads to the quietest streets. Whether your property is on Tor Road, View Road and Firle Road or anywhere close by, we can help. If you’re just outside Telscombe, we cover East Saltdean (1 mile west), Saltdean (1 mile west), Piddinghoe (2 miles east), Rodmell (2 miles north-east) and Rottingdean (3 miles west). Further out, we also cover Eastbourne (13 miles east), Seaford (6 miles east), Lewes (5 miles north), Hailsham (12 miles east), Uckfield (12 miles north-east) and Newhaven (3 miles east).
What’s near Telscombe
Locally, jobs take us to homes and businesses close to Peacehaven Community School and Smugglers Rest pub. Telscombe’s nearest station is Southease station, about 2.6 miles north-east. A little further out are Planet Earth Museum (2.8 miles east) and Lewes Castle (4.9 miles north). Not far away are Itford Hill and Beacon Hill Local Nature Reserve.
Telscombe questions
Can you help a landlord with a rental near Southease station?
Yes, landlords and agents are among the people we work for. Just call 0345 464 0079 or email us with the address and what needs doing, and we will give you a clear quote.
Do you cover smaller places like Telscombe?
Yes. Telscombe is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Is the new sealant paintable?
It depends on the sealant. Some hybrid sealants can be painted; silicone cannot. Mention any painting plans before any work starts.
Are you fully insured?
Yes. We’re fully insured.
Can you do upstairs windows?
Yes, in most cases. We plan safe access before the job.
Will the old sealant be removed?
Yes. We cut out all the old sealant and clean the joint before resealing.
How do I get a quote for window mastic in Telscombe?
It depends on the job, so we quote each one individually. To get one, ring 0345 464 0079 or email us with a short description of the job.
Do you have sealant for grey or black windows?
Yes. Anthracite grey, black, brown and white cover most frames, with clear as an option.
When it isn’t the sealant
It helps to know what we can’t do too:
- Penetrating damp from a failed cavity tray or render
- Misting between the panes of a double-glazed unit (that needs a new unit)
- Worn gaskets, brush seals or a door that has dropped
If you are not sure, just phone 0345 464 0079 or email us and we will give you a straight answer.
What we seal
- Aluminium frames
- Timber windows & doors
- Composite doors
- uPVC windows
- Patio & French doors
- Window sills
Different surfaces, different methods
Aluminium frames
Large aluminium doors have long joints down each side and across the head, and the bottom joint sees the most water. We prepare and reseal every joint, backing the deep ones.
Window sills
Where a sill meets brick or render, the ends often crack first. We reseal them so rain can’t run into the wall.
Nearby places to Telscombe
More services for Telscombe
Quotes for window mastic in Telscombe
Jobs vary more than people expect. The main factors:
- The product the joint needs
- The old material and how stubborn it is
- The size of the job
- How many rooms, windows or areas are involved
Leaving a failed joint normally makes the job bigger, not smaller. If you are unsure, call 0345 464 0079 or drop us an email for an honest opinion and a quote.
Helping us quote
There’s no need for technical detail. It helps if you can tell us:
- The address or postcode of the job
- What the problem is, such as mould, gaps, leaks or cracking
- How many joints, rooms or windows are involved
- The type of property
Getting a quote is simple: let us know the job and the location and its rough size. A few pictures by email make the job easier to understand, and we will take it from there.
For landlords and businesses
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we’ll give you a quote.
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. We can quote for more than one property at once.
Why it’s worth doing now in Telscombe
Choosing the product is half the job. Decorators’ caulk and bathroom silicone are not designed for outside joints that move. A low-modulus exterior sealant keeps its stretch through hot and cold weather. In a smaller place like Telscombe, 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.
No two jobs are quite the same, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all play a part.
What you get with us
- We agree the colour with you first
- More than 20 years in sealant work
- Experience in homes, commercial sites and hotels
- Anti-fungal sanitary silicone in wet areas
Take a look at our cost guide and what customers say.