Kent · England
Window Mastic in West Malling
Window mastic in West Malling from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Gaps where the sill meets the wall
- Black, perished sealant on frames
- Gaps left after new windows were fitted
How we handle window mastic in West Malling
Colour matters on a frame. We can seal in white, brown, anthracite grey, black or clear, so the bead blends with the window rather than framing it. We work on patio & French doors, composite doors and window sills, and people most often call us about sealant in the wrong colour for the frame and black, perished sealant on frames.
Around West Malling, conservatories, garden rooms and patio doors are often part of the house. Those joints need the same attention as the main windows.
The work is covered for a year after we finish. If anything is not right with it, ring 0345 464 0079 or email us.
- Location
- West Malling (ME19)
- Wider area
- Kent
- Guarantee
- 12 months on all our work
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
When it is not the sealant
We won’t take on work that will not last, so these are the limits:
- Broken hinges, locks or handles
- Soft or decayed wood in the frame
- Damp problems in the wall away from the window
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we will tell you honestly before you book.
Where we work in West Malling
- Window sills
- Patio & French doors
- Composite doors
- uPVC windows
- Aluminium frames
- Timber windows & doors
Common questions in West Malling
Is West Malling in your area for window mastic?
Yes, West Malling is within the area we cover. We work across London and the South East. You can phone 0345 464 0079 or drop us an email and let us know what needs doing.
Do you cover smaller places like West Malling?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Can I do it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Do you guarantee window mastic?
Yes, for 12 months. A yearly look at the joints helps them last.
Can you work on commercial sites?
Yes. We work in offices, washrooms, hotels and other commercial premises. We can talk about working times when we quote.
Where is Mr Mastic based?
We work from Crawley. We cover West Malling and the rest of Kent, along with the rest of our area.
Which products do you use?
Each joint gets the product that suits it. Where it moves, gets wet or faces the weather makes a difference.
Is it OK to seal over old sealant?
No. The old sealant always comes out first, so the new sealant bonds properly.
How the job changes by surface
uPVC windows
Plastic frames move a lot between a hot afternoon and a cold night, so the joint needs a low-modulus sealant that stays flexible. White is the usual colour, with brown, anthracite grey and black for coloured frames.
Window sills
Every drop off the glass ends up on the sill, so the joints at each end and underneath matter. They’re cut out and resealed with exterior sealant.
How we quote for window mastic
Some jobs are bigger than they look, and some smaller. What affects the quote:
- Mould in or behind the old joints
- The product the joint needs
- How many rooms, windows or areas are involved
- Working hours on commercial sites
What you pay reflects the work, not a rough estimate. That is why we ask a few questions first and agree the price before starting.
Helping us quote
What to tell us when you ask for a quote:
- How we’d reach the joints
- What’s wrong with the joints now
- Whether it’s a home or a business
- Where the property is
Every job is quoted individually, so the first step is telling us about yours. Simply ring 0345 464 0079 or drop us an email and describe the job and send photos if you have them.
For landlords and businesses
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.
Whether it’s one flat or a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a 12-month guarantee.
Why it’s worth doing now in West Malling
If you’re painting or rendering, reseal at the same time. Fresh joints finish the job neatly. Homes in smaller places like West Malling can face more weather, and failed outside joints let damp into walls. Indoors, a failed seal lets water into floors and panels as it would anywhere.
A few things move the cost up or down: the old material and how easily it comes out, any mould to treat, and whether we need extra access for height. Your quote takes all of that into account.
Why West Malling clients choose us
- You choose the colour before work begins
- Any old sealant cut out fully, not covered over
- Sealant colour chosen to suit
- An ARBOMaster approved applicator
How the visit works
A visit follows a simple pattern: we check the joints, protect the area around them, carry out the job and tidy away. It usually takes a few hours for a handful of frames, longer for a whole house. For a job in West Malling, we agree the time, the access and parking before the day. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- 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.
- A flexible exterior sealant is applied in a colour to suit the frame.
- Every joint is tooled smooth and checked before we leave.
Getting ready for the visit
- Where the joints are inside, avoid wetting them before we arrive
- Let us know if you’ve seen damp or leaks
- Clear the area around the work
Ask for a quote
Asking for a quote is easy: tell us what needs doing and where. A few photos by email make the job easier to understand.
Advice
Keeping the joints in good condition
Looking after new joints is easy, and it makes a real difference:
- Avoid blasting the frames with a pressure washer
- Ventilate rooms so frames don’t stay wet inside
- Don’t use solvent cleaners on the joint
- Walk round the house once a year and look at the joints
A yearly look round the frames is enough. Cracks and lifting edges are easy to spot early.
Leaks normally show up in wet, windy weather, but resealing works best in dry conditions. Sorting cracked mastic early means the joint is sound before the bad weather.
What window mastic looks like in West Malling
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. With historic houses such as Old Soar Manor (about 4.2 miles south-west) nearby, there’s older building stock in the area around West Malling as well as newer homes. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.
For landlords with property near West Malling station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets. Schools such as More Park Catholic Primary School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages. For an older house near a landmark such as Parish Church of St Mary the Virgin, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
West Malling is about 6 miles west of Maidstone, in Kent. Across the ME19 area, we cover window mastic for homes and businesses. West Malling is one of 922 towns and villages in Kent we cover for window mastic. For nearby work, see our London page (26 miles or so).
We work across ME19 for window mastic and the streets around it. Local streets include High Street, Police Station Road and London Road, all of which we cover. West Malling is on the A20, so it’s easy for us to get to with everything needed for window mastic. If you’re just outside West Malling, we cover Well Street (1 mile south-east), East Malling (1 mile east), Kings Hill (2 miles south), Ditton (2 miles east) and Red Hill (3 miles south-east). Larger places within reach include Maidstone (6 miles east), Sittingbourne (15 miles east), Dartford (13 miles north-west), Sevenoaks (9 miles west), Royal Tunbridge Wells (12 miles south-west) and Gravesend (9 miles north).
Near you in West Malling
In West Malling, that means homes and buildings near Manor Park Country Park, The Malling School and The Malling School. West Malling’s nearest station is West Malling station, roughly 0.7 miles east of the centre. Well-known places in the area include Coldrum Long Barrow (2.3 miles north-west) and Leybourne Castle (1.1 miles north-east). For a walk, there’s Burham Down and Blue Bell Hill.