Kent · England
Window & door mastic in Wrotham, Kent
Window mastic in Wrotham from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Sealant in the wrong colour for the frame
- Rushed sealant from a window installation
- Black, perished sealant on frames
Window mastic in Wrotham
There are two joints on most windows. The external joint is the weather seal; the internal joint closes the gap to the plaster and stops draughts. We seal one or both, depending on what’s needed. Common call-outs are for white mastic on grey or black frames and draughts coming in around windows and doors, on composite doors, aluminium frames and uPVC windows.
Homes in small places like Wrotham often stand in the open, with little to shelter their windows from wind and rain. Exposed frames and sills lose their mastic sooner than sheltered ones.
Our work is backed for twelve months, and the guarantee is the same wherever you are.
- Place
- Wrotham (TN15)
- Wider area
- Kent
- Guarantee
- A year, on every job
- Quotes
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
What happens if it’s left?
Failed mastic is not a reason to replace sound windows. If the frames and glass are in good order, resealing the joints is often all that’s needed. If we find failed glass units or worn seals, we will tell you. Where a wall is exposed, as many are in small places like Wrotham, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
What it costs depends on how much there is to do, how much old material has to come out and how easy the joints are to reach. We give a clear quote before work begins, so you know where you stand.
Why Wrotham customers choose us
- Homes, businesses and hotels
- We’re fully insured
- Sealant colour chosen to suit
- 20+ years of sealant experience
Take a look at how sealant jobs are priced and customer reviews.
Aftercare tips
Looking after new joints is easy, and it makes a real difference:
- Make sure the drainage slots are not blocked
- Look round the frames every year or so
- Avoid harsh chemicals near the mastic
- Repaint timber before it’s bare
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. Early resealing stops it reaching that point.
Should I try it myself first?
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.
A DIY attempt doesn’t rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.
Your questions about window mastic in Wrotham
Do you work for landlords with property near Borough Green & Wrotham station?
Yes. We work for landlords and letting agents as well as householders. You can call 0345 464 0079 or send us an email with the details for a clear quote.
Do you cover smaller places like Wrotham?
Yes. Wrotham is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Do you hold any approvals?
Yes. Mr Mastic is an ARBOMaster approved applicator.
Can I do it myself?
That depends on the joint. High-level, external movement and fire-rated joints are professional jobs.
Do you have insurance?
Yes. We are fully insured, and we can confirm the details when we quote.
Do the sealants smell?
There can be a smell while the sealant cures, which fades as it sets. Opening a window helps.
What sealant do you use?
Each joint gets the product that suits it. Where it moves, gets wet or faces the weather makes a difference, and we will explain our choice.
Do you seal inside as well as outside?
Yes. Plenty of draughts come through the inside joint as well as the outside, so sealing both is often worthwhile.
What affects the quote in Wrotham
We do not publish a price list, because jobs vary so much. What we look at:
- How much there is to do
- How many rooms, windows or areas are involved
- How easy the joints are to reach
- How much old sealant there is and how hard it is to remove
Doing several joints on one visit is normally more efficient than separate visits, so it’s worth mentioning everything you’d like done. You’ll get one clear quote for the whole job.
Helping us quote
When you call or email, these details help:
- Pictures of the joints, sent by email
- If it’s domestic, commercial or a hotel
- Access, such as stairs, a lift or height
- How many joints, rooms or windows are involved
Every job is quoted individually. Simply call 0345 464 0079 or send us an email and describe the job and send pictures if you have them.
How the visit works
We bring everything the job needs with us, so you do not need to buy or prepare anything. After a quick look at the joints together, the area is protected and the work begins. It normally takes a few hours for a few frames, or a day or more for a whole house. Somewhere like Wrotham needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- 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.
- We tool each bead neatly and check every joint is closed.
Before we arrive
- For business premises, tell us about site rules or sign-in
- Tell us about any previous sealing or DIY attempts
- Move anything stored near the joints
How to get 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.
Read more
Common problems we fix in Wrotham
Sun, frost and rain wear sealant out. UV light hardens the outside of the bead, until it loses its stretch and starts to crack.
These are the problems we’re asked about most:
- A bead that does not match the frame
- Hard, cracked sealant around windows
- Cold air getting in at the frame edge
- Rain getting in at the frame or under the sill
Rented homes near Borough Green & Wrotham station change hands often, and sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Before you book anyone
- Whether they seal over old material or remove it
- What happens if they find a problem under the old sealant
- What the quote includes, VAT included or not
- Whether you can choose the colour
Wrotham homes and the weather
With historic houses such as Old Soar Manor (about 3.2 miles south) nearby, there’s older building stock in the area around Wrotham as well as newer homes. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window. Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For an older house near a landmark such as Church of St George, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. Schools such as Wrotham School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s.
Wrotham is about 6 miles east of Sevenoaks, in Kent. Homes, rented property, offices and hotels in Wrotham is covered for window mastic. The work is guaranteed for a year. 922 places in Kent are on our list, from the larger towns to small villages. There’s also a page for London, about 22 miles away.
Work in TN15 is quoted and booked the same way as anywhere else. Streets in the area include High Street, Old London Road and West Street, all of which we cover. Close by, we work in Labour-in-vain (1 mile north), Fairseat (2 miles north-east), Trottiscliffe (2 miles east), Hodsoll Street (2 miles north) and Vigo Village (3 miles north-east). We also work in nearby towns such as Maidstone (10 miles east), Dartford (10 miles north), Sevenoaks (6 miles west), Royal Tunbridge Wells (12 miles south), Gravesend (9 miles north) and Tonbridge (8 miles south).
Near you in Wrotham
Typical jobs here are in homes near The George And Dragon Public House, Borough Green Primary School and Trosley Country Park and the streets around them. For rail, the closest station is Borough Green & Wrotham station, roughly 1.1 miles south. Well-known places in the area include Beechin Wood Archery Museum (2 miles south-east) and Ightham Court (1.3 miles south-west).
Places near Wrotham
More services for Wrotham
What the job involves on each surface
Patio & French doors
Heavy door frames can move more than windows. The sealant must cope with it.
uPVC windows
uPVC expands and contracts noticeably with temperature, so we use a flexible, low-modulus sealant. We match white, brown, anthracite grey and black frames.