East Sussex · England
Window & door mastic in Hailsham, East Sussex
Mastic around window and door frames, sills and patio doors for Hailsham, backed by a 12-month guarantee. Ask us for a quote.
- Mastic that has split away from the wall
- Sealant in the wrong colour for the frame
- Black, perished sealant on frames
About our window mastic in Hailsham
Colour matters on a frame. We can seal in white, brown, anthracite grey, black or clear, so the line suits the frame instead of standing out. We work on aluminium frames, uPVC windows and timber windows & doors, and the jobs we see most are untidy mastic left by window fitters and black, perished sealant on frames.
Around Hailsham, many houses have gained conservatories, French doors or replacement windows over time. Every addition brings more joints, each wearing at its own pace. Sills, frame heads and glazing joints are where leaks normally start.
All of our work is guaranteed for twelve months, in Hailsham and everywhere else we cover.
- Where
- Hailsham (BN27)
- Region
- East Sussex
- Cover
- A year, on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Surface by surface
Window sills
Masonry sills can have joints where water gets in, and the joint under the frame can let rain run behind. Those are sealed with a product suited to stone or concrete.
Aluminium frames
Bi-fold and sliding aluminium doors have long frame joints, and the bottom joint sees the most water. We prepare and reseal every joint, backing the deep ones.
Questions from Hailsham
Do you work for landlords with property near Polegate station?
Yes, we work for letting agents and landlords. You can call 0345 464 0079 or drop us an email with the address and a few details, and we will give you a fixed price before we start.
Do you cover Hailsham for window mastic?
Yes. We work across London and the South East, and Hailsham is part of that. Just call 0345 464 0079 or drop us an email with a few details of the job.
Will you leave a mess?
We keep the work tidy. We protect what’s around the joints, and the area is left clean when we finish.
Can new sealant go over the old?
No. Fresh sealant does not stick to old sealant, and it traps any mould or water underneath. It all has to come out first.
How long will my window job take?
It depends on access, the old mastic and the size of the frames. We’ll tell you how long your job needs when we quote.
Does someone need to be in?
Access is agreed with you when the job is booked. For inside work, that normally means someone being in.
Which products do you use?
Products from Arbo and Everbuild, among others, chosen to suit the joint. We’ll tell you what we are using and why.
Are you insured?
Yes, we’re fully insured.
Why act early in Hailsham
If you’re painting or rendering, reseal at the same time. A clean new bead makes new paint or render look finished. In a family home in Hailsham, a failed seal around a bath or a frame lets water into places you cannot see, such as under the floor, behind a panel or into a wall. Whatever the joint, failed sealant only gets worse.
Rather than a set price list, we look at what your job involves: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Why book with us
- Over 20 years’ experience
- We agree the colour with you first
- Fully insured
- Homes, businesses and hotels
Read what affects the cost or what customers say.
How to look after the new joints
Aftercare is simple:
- Make sure the drainage slots are not blocked
- Air rooms to keep condensation down around windows
- Do not paint over the silicone
- Don’t aim a pressure washer at the joints
Silicone cannot generally be painted, so mention any painting plans before any work starts. There are paintable sealants for joints that need it.
Draughts get worse, not better. As the old mastic shrinks further, more air gets through, and heat escapes around the frame. A new joint closes it up.
DIY versus a professional finish
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.
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.
Frames and glazing around Hailsham
With historic houses such as Horselunges Manor (about 1.5 miles north) nearby, there’s older building stock in the area around Hailsham as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Letting a property close to Polegate station? Then cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets. Schools such as Hailsham Community College are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages. For an older house near a landmark such as The Parish Church of Saint Mary, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Hailsham is about 6 miles north of Eastbourne, in East Sussex. Hailsham gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. Hailsham is one of 289 places in East Sussex where we work for window mastic. We also work in Brighton, around 17 miles away.
Here we cover the BN27 postcode area for window mastic. Whether your property is on High Street, Market Place and Station Road or a nearby road, we can help. Hailsham sits on or near the A271 and A295, so getting to you is simple. Neighbouring places we cover for window mastic include 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). Larger places within reach include 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 among the bigger towns we cover in East Sussex.
Around Hailsham
In Hailsham, that means homes and buildings near The Grenadier pub and White House Academy and the streets around them. The closest station to Hailsham is Polegate station, about 3 miles south. A little further out are Herstmonceux Castle (3.6 miles east) and Amberstone Hospital (1.5 miles north-east). Not far away are Combe Hill.
When it isn’t the sealant
Before booking, it’s worth knowing the limits:
- A frame that has rotted at the joint
- Misting between the panes of a double-glazed unit (that needs a new unit)
- Damp problems in the wall away from the window
If you’re not sure, just ring 0345 464 0079 or drop us an email and we will give you a straight answer.
Surfaces we seal
- Window sills
- Aluminium frames
- Patio & French doors
- uPVC windows
- Timber windows & doors
- Composite doors
What affects the cost of window mastic
Some jobs are bigger than they look, and some smaller. The main factors:
- The old material and how stubborn it is
- The size of the job
- Working hours on commercial sites
- The type of sealant required
Leaving a failed joint usually makes the job bigger, not smaller, because water and mould keep working on it. If you’re unsure, call 0345 464 0079 or email us and we’ll give you an honest view and a quote.
What we need to know
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- Where the job is, and your postcode
- Any access issues, like height or stairs
- What the problem is, such as mould, gaps, leaks or cracking
- If it’s domestic, commercial or a hotel
For a quote, phone 0345 464 0079 or drop us an email with the location and a short description of the problem. We’ll give you a clear price before any work starts.
How the visit works
A visit follows a simple pattern: we look at the joints together, mask and protect the surrounding surfaces, carry out the job and tidy away. It usually takes anything from an hour or two to a full day, depending on how many frames there are. In Hailsham, parking is rarely complicated, though it helps to know about driveways or restrictions, and mention if the work is upstairs, in a flat or high on the outside.
- First, we go round the frames with you and agree the list.
- The old mastic is cut out and scraped back to clean surfaces.
- Where the gap is deep, backing rod goes in first.
- 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
- Move anything stored near the joints
- Tell us about any water getting in
- Try not to wet indoor joints just before the visit
Getting a quote
It all starts with a short chat. Describe the problem, the location and the size of the job, and we’ll explain how we’d tackle it. Whenever you’re ready, call 0345 464 0079 or drop us an email.