East Sussex · England
Window & door mastic in Boarshead, East Sussex
Professional window mastic in and around Boarshead, with every bit of old sealant taken out first and a 12-month guarantee.
- Damp patches on the reveal after heavy rain
- Cracked internal joints between frame and plaster
- Gaps where the sill meets the wall
Window mastic in Boarshead
Behind a thin line of old mastic there’s sometimes a deep void. Filling it with sealant alone leaves a joint that can’t move properly, so we fit backing rod to set the right depth. The sealant then grips the two sides it should. We work on timber windows & doors, window sills and patio & French doors, and common reasons people get in touch are old mastic that has gone black or come away and cracked sealant at the sill ends.
Somewhere as small as Boarshead, older homes often have timber frames set in stone or brickwork. Not every older frame suits a modern silicone bead, so the sealant has to be chosen to suit the building.
All our work comes with our one-year guarantee.
- Location
- Boarshead (TN6)
- Wider area
- East Sussex
- Guarantee
- One year on every job
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Honest limits
Some problems need a builder, plumber or other trade rather than us:
- A frame that has rotted at the joint
- A sash or casement that won’t close properly
- 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’ll give you a straight answer.
Where we work in Boarshead
- Window sills
- Aluminium frames
- Composite doors
- Timber windows & doors
- Patio & French doors
- uPVC windows
Window mastic in Boarshead: local notes
With historic houses such as Groombridge Place (about 3.3 miles north) nearby, there’s older building stock in the area around Boarshead as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic. Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
If you look after a building such as Beacon Academy, larger buildings have plenty of frames, and the mastic around each one ages. For landlords with property near Eridge station, renewing tired window mastic between tenants heads off draught and damp complaints.
Boarshead is about 2 miles north-east of Crowborough, in East Sussex. Jobs in Boarshead get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. Our area takes in 289 places across East Sussex, large and small. For nearby work, see our Crawley page, about 17 miles away.
Our applicators cover all of TN6 for window mastic. Boarshead sits on or near the A26, so getting to you is simple. Nearby, we also carry out window mastic in Steel Cross (1 mile south), Jarvis Brook (1 mile south), Crowborough (2 miles south-west), Mott's Mill (2 miles north) and Marden's Hill (2 miles west). Further out, we also cover Hailsham (15 miles south), Uckfield (8 miles south-west), South Malling (15 miles south-west), Heathfield (8 miles south), Upper Horsebridge (14 miles south) and Cliffe (15 miles south-west).
Around Boarshead
We work in homes and buildings around The Boars Head Inn and the streets around them. The closest station to Boarshead is Eridge station, about 1.4 miles north-east of the centre. Nearby you’ll also find Crowborough War Memorial Hospital (1.8 miles south-west) and Bolebroke Castle (4.9 miles north-west). Not far away are Crowborough Country Park.
What happens on the day
We bring everything the job needs with us, so you don’t need to buy or prepare anything. After a quick look at the joints together, the area is protected and the work begins. Most jobs take anything from an hour or two to a full day, depending on how many frames there are. In a small place like Boarshead, access is normally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We check each frame and agree which ones need doing.
- Next the failed sealant is cut away and the joint cleaned.
- We fit backing rod in deep gaps so the sealant is the right depth.
- New exterior sealant goes on in a matching colour and is tooled smooth.
- Every joint is checked before we leave.
Preparing for the visit
- Clear the area around the work
- Let us know about stairs, lifts or work at height
- Let us know about parking restrictions
Ask for a quote
Every job is quoted individually. Just ring 0345 464 0079 or drop us an email with the details and send photos if you have them.
Advice
Surface by surface
Composite doors
An exposed front door gets wind-driven rain, and the top and bottom corners tend to fail first. We pay most attention there.
uPVC windows
Plastic frames move a lot between a hot afternoon and a cold night, so we use a flexible, low-modulus sealant. We match white, brown, anthracite grey and black frames.
FAQs for Boarshead
Is Boarshead within the area you cover?
Yes, we do. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Can you help a landlord with a rental near Eridge station?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. Just phone 0345 464 0079 or send us an email with the address and what needs doing, and we will send you a clear quote.
Can you match the sealant to my frames?
Yes, in most cases. Mention the frame colour when you ask for a quote and we’ll match it as closely as we can.
Do you guarantee window mastic?
Yes, for 12 months. Keeping drainage clear and checking the joints yearly helps them last.
Do you seal inside as well as outside?
Yes. Indoors, we seal between the frame and the plaster or reveal.
Do you do commercial work?
Yes, regularly. We can plan bigger jobs in stages to suit the site.
What does window mastic cost?
The cost depends on the size of the job, access and how much old sealant has to come out. Call for a quick quote and we will talk you through it.
When is the sealant fully cured?
Different products cure at different speeds, so follow the cure time we give you when we finish.
What we are called out for in Boarshead
Frames are never completely still. A plastic or aluminium frame lengthens in sunshine and shortens as it cools, while the masonry beside it stays put. A sealant that cannot keep up eventually tears.
Any of these means the joints need attention:
- A bead that doesn’t match the frame
- Rushed sealant from a window installation
- Draughty joints inside around the window
- Leaking joints at the ends of sills
Groombridge Place, about 3.3 miles north, is one of the historic houses in the wider area around Boarshead.
What your quote should include
- What preparation is included
- How hidden problems are handled
- Who does the work, and how experienced they are
- The length of the guarantee
What affects the cost of window mastic
The price is agreed before any work begins. It takes into account:
- Working hours on commercial sites
- How much old sealant there is and how hard it is to remove
- Access and height
- How many areas need sealing
What you pay reflects the work, not a rough estimate. That’s why we ask a few questions first and give you a clear price before any work starts.
What we need to know
To make quoting easier, please include:
- Where the property is
- Whether it’s a home or a business
- Whether it has been sealed before
- What the problem is, such as mould, gaps, leaks or cracking
For a quote, call 0345 464 0079 or drop us an email and tell us where the job is and what the problem looks like. You will have a clear quote before any work starts.
Should I try it myself first?
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly, so just mention it when you contact us.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Towns and villages near Boarshead
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Why deal with it now?
Choosing the product is half the job. Decorators’ caulk and bathroom silicone aren’t designed for outside joints that move. An exterior, low-modulus sealant stays flexible in sun and frost. Older cottages and farmhouses around Boarshead can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Every job is a little different, so each one gets its own quote. Size, access and the product the joint needs all make a difference, and we will explain the quote if you ask.
What you get with us
- A choice of colours where the product allows
- We agree the colour with you first
- Rated 4.9 stars on Google
- Anti-fungal sanitary silicone in wet areas
Read our cost guide and customer reviews.