East Sussex · England
Little Horsted Window Mastic
Mastic around window and door frames, sills and patio doors in Little Horsted, with a 12-month guarantee on every job. Call for a quick quote.
- Rain getting in at the frame or under the sill
- Gaps left after new windows were fitted
- Mastic that has split away from the wall
Window mastic in Little Horsted, done properly
From a single sill to a whole house of windows, you’ll get a clear quote before we start. To get one, call 0345 464 0079 or send us an email with the number of frames and any access details for window mastic in Little Horsted. Typical jobs include white mastic on grey or black frames and old mastic that has gone black or come away, on uPVC windows, window sills and composite doors.
Somewhere as small as Little Horsted, older homes often have timber frames set in stone or brickwork. Older buildings like these do not always suit modern silicone, and sometimes a traditional sand mastic is the better choice.
Big or small, you get the same one-year guarantee in Little Horsted and across East Sussex.
- Place
- Little Horsted (TN22)
- Region
- East Sussex
- Guarantee
- One year on every job
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Keeping the joints in good condition
Joint life depends on how it’s used and looked after. We suggest:
- Keep paint and stain on wooden frames in good order
- Don’t paint over the silicone
- Make sure the drainage slots are not blocked
- Avoid harsh chemicals near the mastic
Keep the new mastic undisturbed while it cures, for as long as we advise. Keep jet washers away from the frames.
A small gap around a frame only grows. As the old mastic shrinks further, more air gets through, and heat escapes around the frame. A new joint closes it up.
Honest limits
In fairness, some problems need a different trade:
- Condensation trapped between the panes
- Soft or decayed wood in the frame
- Broken hinges, locks or handles
If in doubt, call 0345 464 0079 or send us an email and we’ll say what we think.
Surfaces we seal
- uPVC windows
- Composite doors
- Window sills
- Aluminium frames
- Timber windows & doors
- Patio & French doors
What we do, step by step
Every visit runs the same way: we check the joints, mask and protect the surrounding surfaces, carry out the job and tidy away. Most jobs take a few hours for a few frames, or a day or more for a whole house. In a small place like Little Horsted, access is generally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We check how each frame can be reached safely.
- Old, cracked mastic is removed completely.
- The surfaces are cleaned and left dry.
- Deep voids are backed, then the sealant is gunned in.
- We tool the joint so water runs off, then clear up.
Preparing for the visit
- Let us know about parking restrictions
- Keep children and pets away from the work area
- Tell us about any water getting in
Ask for a quote
For a quick quote, get us on the phone, or email us if that’s easier. Tell us about the joints that need doing and we will talk you through the work.
Advice
Signs you need window mastic in Little Horsted
Sun, frost and rain wear sealant out. UV light hardens the outside of the bead, until it loses its stretch and starts to crack.
Signs it’s time to call us include:
- Cracked internal joints between frame and plaster
- Rain getting in at the frame or under the sill
- Draughts coming in around windows and doors
- White mastic on grey or black frames
Schools such as Little Horsted Church of England Primary School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.
What your quote should include
- Whether the sealant suits the joint
- What happens if they find a problem under the old sealant
- How the colour is chosen
- How the joint is cleaned and prepared
Little Horsted questions
Is Little Horsted within the area you cover?
Yes, we do. We work across London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Can you help a landlord with a rental near Uckfield 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.
Where is Mr Mastic based?
Our base is Crawley, with over 20 years’ experience. We work across South East England, London and Scotland.
What do you need from me for a quote?
A short description and the location. We’ll ask anything else we need to know.
Can resealing stop a draught around my window?
Yes, where the draught is at the frame edge. We check where the draught is before work begins.
Do you take out the old sealant first?
Yes. All of the old material is cut out and the joint cleaned before applying anything new.
How much does window mastic cost in Little Horsted?
We don’t publish prices, because the cost depends on the job: how much there is, what’s there now, how we reach it and what it needs. We agree the price before any work begins.
Can you seal over the old sealant?
No, and we never do. It can look neat for a few weeks, but the new bead soon lifts. The old sealant has to come out completely.
How the job changes by surface
Window sills
The end joints of a sill tend to fail before the rest. We reseal them so rain can’t run into the wall.
Aluminium frames
Aluminium moves with heat, and the frames are often slimmer than uPVC. A tidy bead in anthracite grey, black or a matching colour suits the frame.
Also near Little Horsted
Also in Little Horsted
Window mastic in Little Horsted: local notes
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.
In the older streets around The Parish Church of St Michael and All Angels, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. If you let a flat or house near Uckfield station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Little Horsted is about 1 mile south of Uckfield, in East Sussex. Anywhere in TN22, we cover window mastic for homes and businesses. Little Horsted is one of 289 towns and villages in East Sussex we cover. We also work in Brighton, about 13 miles from Little Horsted.
All of TN22 is within our area for window mastic. We cover properties on Ayrshire Lane, White Park Avenue and Meadow Grass Lane and the roads around them. We also cover the places around Little Horsted: Ridgewood (1 mile north-east), Isfield (1 mile south-west), Rose Hill (2 miles south-west), Budlett's Common (3 miles north) and Mount Pleasant (3 miles south-west). We also work in nearby towns such as Eastbourne (14 miles south-east), Seaford (12 miles south), Lewes (6 miles south-west), Hailsham (9 miles south-east), Crowborough (8 miles north-east) and Newhaven (11 miles south).
Around Little Horsted
Typical jobs here are in homes near Uckfield College, Hempstead Meadow and The Highlands pub and the streets around them. The closest station to Little Horsted is Uckfield station, about 1.3 miles north. A little further out are Uckfield Community Hospital (1.3 miles north-east) and Museum of Agricultural Bygones (3.8 miles south). Green spaces nearby include Brickfield Meadow.
What happens if it’s left?
Choosing the product is half the job. Interior caulk and bathroom silicone aren’t made for exterior frame joints. An exterior, low-modulus sealant stays flexible in sun and frost. Older cottages and farmhouses around Little Horsted can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
What it costs depends on the size of the job, how much old material has to come out and access to the work. You’ll have a clear quote before any work starts, so you know where you stand.
Why us?
- Approved under the ARBOMaster scheme
- 180+ five-star Google reviews
- We agree the colour with you first
- Anti-fungal silicone where joints get wet
Take a look at our cost guide or our reviews.
How we quote for window mastic
You will get a clear quote before we start. It’s based on:
- Working hours on commercial sites
- Any mould that needs treating
- The old material and how stubborn it is
- The size of the job
We don’t show prices on the website, because the cost depends so much on the job itself. Call for a quick quote.
What to tell us for a quote
Photos by email are helpful but not essential. Please mention:
- Any access issues, like height or stairs
- Whether it’s a home or a business
- The address or postcode of the job
- Whether it has been sealed before
We do not publish a price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To get started, call 0345 464 0079 or drop us an email.