Kent · England
Window & door mastic in Woodlands, Kent
Window and door frames in Woodlands need attention? We cut out the old, prepare the joints and apply the right sealant, with a 12-month guarantee.
- Gaps left after new windows were fitted
- White mastic on grey or black frames
- Leaking joints at the ends of sills
Window mastic for homes and businesses in Woodlands
A window frame and the wall around it expand and shrink at different rates. Plastic and aluminium frames move with the temperature, while masonry stays fairly still. So the sealant has to stretch and recover, which is why we use a low-modulus product. If you are dealing with mastic that’s falling out in pieces and damp patches on the reveal after heavy rain, we can put it right, whatever the surface.
Outdoor sealant needs dry, clean surfaces, so work on frames around Woodlands is planned for dry weather. Tell us about access to every side of the house, including upper-floor windows.
You get a 12-month guarantee, the same in Woodlands as everywhere else we work.
- Location
- Woodlands (TN15)
- Wider area
- Kent
- Cover
- One year on every job
- Quotes
- A clear price before we start
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Can I do it myself?
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and does not move well, and getting the depth right matters as much as the look.
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Aftercare tips
Aftercare is simple:
- Do not paint over the silicone
- Don’t aim a pressure washer at the joints
- Clean frames with a soft cloth and soapy water
- Do not use solvent cleaners on the joint
Timber frames need their paint kept up, because bare, wet timber moves more and pulls at the joint. Keep paint off the silicone itself.
Water gets in quietly when mastic fails. You might not see it until plaster blows or a damp patch appears inside. Catching it early keeps the fix to a reseal.
What happens if it’s left?
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 small place like Woodlands, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
Doing several joints on one visit usually makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. You’ll get one clear quote for the whole job.
What you get with us
- Anti-fungal silicone where joints get wet
- An ARBOMaster approved applicator
- Any old sealant cut out fully, not covered over
- White, clear, grey or coloured to suit, where the product allows
For landlords and businesses
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
Whether it’s one flat or a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
What affects the cost of window mastic
You’ll get a clear quote before work begins. It’s based on:
- Whether old sealant or filler has to be cut out
- The type of sealant required
- Access and height
- The number of rooms or windows
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. You will know the price before we begin.
What we need to know
Before you ask for a quote, have a think about:
- How we’d reach the joints
- How many joints, rooms or windows are involved
- Whether it has been sealed before
- What’s wrong with the joints now
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints.
Nearby places to Woodlands
Other services in Woodlands
Woodlands questions
Do you cover smaller places like Woodlands?
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.
Do you cover Woodlands for window mastic?
Yes, Woodlands is within the area we cover. Our work covers London and the South East. You can phone 0345 464 0079 or email us and tell us what needs doing, and we’ll give you a clear price.
Where do you work from?
We work from Crawley. We cover Woodlands and the rest of Kent, along with the rest of our area.
What does window mastic cost?
The cost depends on the size of the job, access and how much old sealant has to come out. Ask us for a quote.
Will resealing my frames help with draughts?
Yes, if the air is getting in around the frame. If it’s coming through the window seals, we’ll tell you.
When is the sealant fully cured?
That depends on the sealant used, so follow the cure time we give you.
Does the work come with a guarantee?
Yes. Each job is covered for 12 months.
Do you take out the old sealant first?
Always. Sealing over the old bead is the commonest cause of early failure, and it’s something we never do.
What window mastic looks like in Woodlands
Historic houses like Lullingstone Castle (about 3.2 miles north-west) are a reminder that the area around Woodlands has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. 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.
Homes close to Church of Saint Mary the Virgin include some older properties, and the joint between an old wall and a newer frame is normally the first place rain gets in. If you let a flat or house near Kemsing station, renewing tired window mastic between tenants heads off draught and damp complaints.
Woodlands is about 4 miles north-east of Sevenoaks, in Kent. From the centre of Woodlands to the outskirts, window mastic is available for homes and businesses alike, from flats and houses to offices and hotels. Woodlands is one of 922 places in Kent where we work. There’s also a page for London, roughly 19 miles from Woodlands.
Postcode districts we cover here for window mastic: TN15. Nearby, we also carry out window mastic in Cotman's Ash (1 mile south-west), Knatts Valley (1 mile north), Romney Street (1 mile north-west), East Hill (1 mile north) and Heaverham (1 mile south). Larger places within reach include Maidstone (13 miles east), Dartford (8 miles north), Sevenoaks (4 miles south-west), Royal Tunbridge Wells (13 miles south), Gravesend (9 miles north-east) and Tonbridge (9 miles south).
Near you in Woodlands
We work in homes and buildings around The Rising Sun pub and Kemsing Down. The nearest railway station is Kemsing station, roughly 1.8 miles south. A little further out are Sevenoaks Hospital (3.3 miles south-west) and Kemsing Castle Bank (1.4 miles south-west).
When it is not the sealant
Sealant isn’t the answer to every problem, and we’d rather say so up front. Sealant will not put right:
- Rotten timber, which needs a joiner first
- Damp coming through the wall itself rather than the frame joint
- A sash or casement that will not close properly
If in doubt, call 0345 464 0079 or send us an email and we will say what we think.
Surfaces we seal
- Window sills
- Aluminium frames
- uPVC windows
- Composite doors
- Timber windows & doors
- Patio & French doors
How it works
On the day, we look over the joints with you first, so you know exactly what we’re doing. We protect the surfaces around the joints before any work begins. The work normally takes a morning for a couple of windows and a door. In a small place like Woodlands, access is usually the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First, we confirm safe access to each frame.
- All the failed sealant is cut away, along with any loose debris.
- Frame and wall are cleaned and must be dry before sealing.
- Deep voids are backed, then the sealant is gunned in.
- The joint is shaped to shed water and the area tidied.
Getting ready for the visit
- Mention any sign-in or site rules at work premises
- Try not to wet indoor joints just before the visit
- Tell us about any previous sealing or DIY attempts
How to get a quote
We don’t publish a price list. Instead, your job gets its own clear quote. To arrange one, call 0345 464 0079 or email us.