Kent · England
Window & door mastic in Sheldwich Lees, Kent
Window mastic across Sheldwich Lees and nearby, with old sealant always removed completely and a 12-month guarantee.
- Rushed sealant from a window installation
- Damp patches on the reveal after heavy rain
- Old mastic that has gone black or come away
About our window mastic in Sheldwich Lees
A window frame and the wall around it expand and shrink at different rates. Heat and cold make frames grow and shrink against brick or render that hardly moves. So the sealant has to stretch and recover, which is why we use a low-modulus product. We work on patio & French doors, aluminium frames and uPVC windows, and common reasons people get in touch are untidy mastic left by window fitters and mastic that has split away from the wall.
Somewhere as small as Sheldwich Lees, 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.
There’s a 12-month guarantee on every job, whatever its size.
- Location
- Sheldwich Lees (ME13)
- Region
- Kent
- Cover
- One year on every job
- Quotes
- A clear price before work begins
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Why act early in Sheldwich Lees
Draughts and leaks do not always mean new windows. If the frames and glass are in good order, resealing the joints is often all that is 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 Sheldwich Lees, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
Instead of a standard rate, we look at what your job involves: the amount of work, the old material and the access. The price is agreed before we begin.
Why choose Mr Mastic in Sheldwich Lees
- Colour picked to suit the job
- Full insurance on every job
- We leave the area clean and tidy
- Anti-fungal sanitary silicone in wet areas
Towns and villages near Sheldwich Lees
Also in Sheldwich Lees
How we quote for window mastic
There’s no set price list, because jobs vary so much. What we look at:
- The amount of work
- The old material and how stubborn it is
- Any working-time requirements on site
- The type of sealant required
Combining jobs into one visit usually makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. You will get one clear quote for the whole job.
Helping us quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- How many joints, rooms or windows are involved
- If it’s domestic, commercial or a hotel
- The problem you’ve noticed
- How we’d reach the joints
Getting a quote is simple: let us know the job and the location, and roughly how big it is. A few photos by email make the job easier to understand.
What window mastic looks like in Sheldwich Lees
With historic houses such as Belmont House and Gardens (about 1.7 miles west) nearby, there’s older building stock in the area around Sheldwich Lees 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. 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 let a flat or house near Selling station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets. If you look after a building such as Sheldwich Primary School, its window and door frames need their mastic kept sound, just like a home’s.
Sheldwich Lees is about 3 miles south of Faversham, in Kent. Every kind of property in Sheldwich Lees is covered for window mastic, old or new, large or small. The work is guaranteed for a year. Sheldwich Lees is one of 922 towns and villages in Kent where we work. There’s also a page for Chelmsford, roughly 37 miles from Sheldwich Lees.
Every address in ME13 is covered for window mastic, from the main roads to the quietest streets. If you’re just outside Sheldwich Lees, we cover Sheldwich (1 mile north-west), Badlesmere (1 mile south), North Street (1 mile north), Throwley (1 mile west) and Throwley Forstal (2 miles south-west). Within a short drive, we also cover Ashford (9 miles south), Canterbury (8 miles east), Sittingbourne (8 miles north-west), Whitstable (8 miles north-east), Faversham (3 miles north) and Herne Bay (13 miles north-east).
Local landmarks in Sheldwich Lees
Sheldwich Lees’s nearest station is Selling station, roughly 2.4 miles east of the centre. Well-known places in the area include Tower keep castle at Chilham (3.7 miles south-east).
What we can’t put right
We won’t take on work that won’t last, so here’s what sealant cannot put right:
- Soft or decayed wood in the frame
- Faulty window hardware
- Condensation trapped between the panes
If in doubt, ring 0345 464 0079 or email us and we’ll say what we think.
What we seal
- Aluminium frames
- Timber windows & doors
- Patio & French doors
- Composite doors
- uPVC windows
- Window sills
Different surfaces, different methods
Timber windows & doors
Older timber windows in stone or brick can suit sand mastic rather than modern sealant. We will tell you which suits your home.
Window sills
Stone and concrete sills have their own joints, and the joint under the frame can let rain run behind. We seal those with a sealant suited to masonry.
FAQs for Sheldwich Lees
Can you help a landlord with a rental near Selling station?
Yes, rental work is part of what we do. You can call 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before we start.
Is Sheldwich Lees in your area for window mastic?
Yes. Our work covers London and the South East, and Sheldwich Lees is part of that. You can ring 0345 464 0079 or send us an email and tell us what needs doing, and we’ll give you a clear quote.
What do you put in the joint?
It depends on the joint: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. Brands we use include Arbo and Everbuild.
How much does window mastic cost in Sheldwich Lees?
Every job is different, so each one gets its own quote. For a quick quote, call 0345 464 0079 or drop us an email and tell us what needs doing and where.
Are you ARBOMaster approved?
Yes. We’re an ARBOMaster approved applicator.
Where do you work from?
Our base is in Crawley, West Sussex, and we cover South East England, London and all of Scotland.
Can you do upstairs windows?
Yes, in most cases. Access is planned before work begins, so mention the height and anything in the way.
Are you fully insured?
Yes. Mr Mastic is fully insured.
Keeping the joints in good condition
So the new joints stay in good condition:
- Check the mastic once a year
- Wipe condensation off the frames
- Keep drainage slots and sill grooves clear
- Keep jet washers away from the mastic
Try not to touch the new joint while it cures, following the cure time we give you. Do not point a pressure washer at the joints.
Water gets in quietly when mastic fails. Often the first sign is a damp patch inside or flaking paint on the reveal. Catching it early keeps the fix to a reseal.
Do you need window mastic in Sheldwich Lees?
Joints that are too thin or too deep fail early. A thin smear across a wide gap has nothing to it, and a gap filled solid cannot flex. Backing rod sets the right depth.
Keep an eye out for these signs:
- Damp patches on the reveal after heavy rain
- Cracked internal joints between frame and plaster
- Old mastic that has gone black or come away
- Untidy mastic left by window fitters
Homes close to Church of St James include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
What to look for in a quote
- What insurance they hold
- Is VAT in the price?
- How the joint is cleaned and prepared
- How long the guarantee is
The process
You do not need to clear the whole room or building, just the space around the work. We protect the rest, and the work takes a few hours for a few frames, or a day or more for a whole house for a typical job. In a small place like Sheldwich Lees, access is usually the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We check how each frame can be reached safely.
- 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.
- We tool the joint so water runs off, then clear up.
Getting ready for the visit
- Tell us about any water getting in
- Let us know about parking restrictions
- For business premises, tell us about site rules or sign-in
Ask for a quote
There’s no standard price list, because every job is different. Instead, your job gets its own clear quote. To get started, call 0345 464 0079 or send us an email.