East Sussex · England
Window Mastic in Old Heathfield
Window mastic in Old Heathfield from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Whistling draughts around closed windows
- Gaps left after new windows were fitted
- White mastic on grey or black frames
How we handle window mastic in Old Heathfield
Some gaps around frames are far deeper than they look. Packing it solid with sealant gives a joint that cannot flex, so deep gaps get backing rod first. That way the new bead bonds to the frame and the wall only. Common call-outs are for draughty joints inside around the window and gaps left after new windows were fitted, on uPVC windows, timber windows & doors and composite doors.
Outdoor sealant needs dry, clean surfaces, so work on frames around Old Heathfield is planned for dry weather. Tell us about access to every side of the house, including upper-floor windows.
There’s a 12-month guarantee on every job.
- Location
- Old Heathfield (TN21)
- Wider area
- East Sussex
- Cover
- A year, on every job
- Quote
- A clear price before work begins
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
How the visit works
There is not much for you to do on the day. Point us to the joints and we’ll get on with it. The job generally takes a few hours for a handful of frames, longer for a whole house from start to finish. In a small place like Old Heathfield, access is generally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- Each frame is looked over and we agree which ones need resealing.
- The old mastic is cut out and scraped back to clean surfaces.
- 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.
- Every joint is tooled smooth and checked before we leave.
Getting ready for the visit
- Mention any leaks or damp you’ve noticed
- Mention any sign-in or site rules at work premises
- For indoor joints, keep the area dry beforehand if you can
How to get a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and add photos by email if you can.
Advice
Towns and villages near Old Heathfield
Other services in Old Heathfield
What sealant work cannot fix
Before booking, it’s worth knowing the limits too:
- Misting between the panes of a double-glazed unit (that needs a new unit)
- Faulty window hardware
- Penetrating damp from a failed cavity tray or render
If in doubt, call 0345 464 0079 or send us an email and we’ll say what we think.
Joints and surfaces we work on
- Aluminium frames
- Window sills
- Patio & French doors
- uPVC windows
- Timber windows & doors
- Composite doors
Old Heathfield homes and the weather
Historic houses like Bateman's (about 4.9 miles north-east) are a reminder that the area around Old Heathfield has older buildings as well as new. Where a home is older, 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.
For site and facilities teams at buildings such as Heathfield Community College, the mastic around its windows and doors needs looking after like any other building’s.
Old Heathfield is about 7 miles north of Hailsham, in East Sussex. Anywhere in TN21, we cover window mastic for homes and businesses. Our East Sussex coverage runs to 289 places, Old Heathfield among them. Brighton is on our list too, about 20 miles from Old Heathfield.
All of TN21 is covered for window mastic. Local streets include School Hill and Church Street, all of which we cover. We also cover the places around Old Heathfield: Cade Street (1 mile north), Sandy Cross (1 mile west), Heathfield (1 mile west), Broad Oak (1 mile north) and Warbleton (1 mile south). Larger places within reach include Eastbourne (12 miles south), Hastings (14 miles south-east), Bexhill-on-Sea (11 miles south-east), Seaford (15 miles south-west), Lewes (13 miles south-west) and Hailsham (7 miles south).
Local landmarks in Old Heathfield
In Old Heathfield, that means homes and buildings near The Star Inn and Parkside Community Primary School, among other places. A little further out are Hellingly Hospital (5 miles south) and Old Castle (3.6 miles east). Green spaces nearby include Selwyns Wood.
For landlords and businesses
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a 12-month guarantee.
Housing providers, facilities teams and property managers book us too in Old Heathfield and across East Sussex. We can quote a run of properties together, and we’re fully insured.
What affects the cost of window mastic
We do not publish a price list, because jobs vary so much. What we look at:
- Working hours on commercial sites
- Access and height
- The number of rooms or windows
- The size of the job
Commercial jobs are quoted on the same basis as homes: how much there is to do, how we reach it and what it needs. Call for a quick quote and we’ll explain what it covers.
Asking for a quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- The address or postcode of the job
- Pictures of the joints, sent by email
- The type of property
- How we’d reach the joints
It all starts with a short chat. Describe the problem, the location and the size of the job, and we will talk you through what we’d do. Whenever you’re ready, call 0345 464 0079 or send us an email.
Do you need window mastic in Old Heathfield?
Sills take more water than any other part of a window, so the sill ends and the joint below the frame are common leak points. Failed sealant there lets rain into the wall or behind the frame.
If you can see any of these, it’s time to have the joints looked at:
- Mastic that is falling out in pieces
- Cracked internal joints between frame and plaster
- Damp patches on the reveal after heavy rain
- Rushed sealant from a window installation
If you live in an older home near The Parish Church of All Saints, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Questions to ask before booking
- How long the guarantee is
- What happens if the job turns out different
- How long to leave it before use
- How much experience the applicator has
Questions from Old Heathfield
Can you do window mastic in Old Heathfield?
Yes, Old Heathfield is within the area we cover. Our work covers London and the South East. You can ring 0345 464 0079 or email us and let us know what needs doing, and we’ll give you a clear quote.
Is Old Heathfield 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.
Do you guarantee window mastic?
Yes. All our work carries a 12-month guarantee, and we’re ARBOMaster approved applicators.
Will you leave a mess?
Tidy work is part of the job. Nearby surfaces are protected, and we clear up when we are done.
Can you quote for more than one area?
Yes. Just list everything you need and we will quote it together.
Where are you based?
Our base is in Crawley, and we work across South East England, London and Scotland.
What sealant do you use?
It depends on the joint: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.
Is it worth trying it myself?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
What the job involves on each surface
Composite doors
If the door itself is draughty, the issue may be the door seals or hinges rather than the frame mastic. We’ll tell you if that is what we find.
Patio & French doors
Patio and French doors have the longest joints on most houses. Most leaks start at the bottom corners, so we pay close attention there.
DIY versus a professional finish
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, then guaranteed for a year.