Kent · England
Window & door mastic in Faversham, Kent
Window mastic for Faversham, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Leaking joints at the ends of sills
- Rushed sealant from a window installation
- Cold air getting in at the frame edge
About our window mastic in Faversham
Every window and door frame has a gap around it, and mastic is what closes it. When it cracks, hardens or pulls away, draughts and rain get in. The old mastic is removed and the joint resealed with a flexible exterior sealant. Typical jobs include mastic that has split away from the wall and untidy mastic left by window fitters, across timber windows & doors, composite doors and aluminium frames.
Walls in Faversham that face the prevailing wind take the most weather, so the mastic there tends to fail first. Checking every frame, not just the obvious one, is time well spent.
The work is guaranteed for twelve months. If something is not right with it in that time, tell us and we will put it right.
- Where
- Faversham (ME13)
- Region
- Kent
- Cover
- One year on every job
- Quote
- A clear price before work begins
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
How we quote for window mastic
You will get a clear quote before work begins. It takes into account:
- The size of the job
- How many areas need sealing
- Whether the work is at height
- Whether there’s mould to deal with
We do not show prices on the website, because the cost depends so much on the job itself. For a quick quote, please phone 0345 464 0079 or send us an email and we will talk you through it.
What to tell us for a quote
When you contact us, these details help:
- Photos by email, if that is easy
- How many joints, rooms or windows are involved
- Any previous sealing or DIY work
- The problem you’ve noticed
Quotes start with a quick conversation. Describe the problem, the location and the size of the job. When it suits you, phone 0345 464 0079 or send us an email.
What happens if it’s left?
Redecorating is a good moment to renew the mastic. A clean new bead makes new paint or render look finished, and it’s easier while the walls are being worked on anyway. Around Faversham, failed sealant lets water into hidden places, such as under the floor, behind a panel or into a wall. Whatever the joint, failed sealant only gets worse.
What it costs depends on how much there is to do, how hard the old material is to remove and how easy the joints are to reach. We give a clear quote before any work starts, so you know where you stand.
What you get with us
- 4.9 on Google from 180+ five-star reviews
- Anti-fungal sanitary silicone in wet areas
- More than 20 years in sealant work
- You choose the colour before work begins
See what affects the cost and customer reviews.
How the visit works
Once we’re on site, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. Most jobs then take a morning for a couple of windows and a door. For a job in Faversham, we need access to where the work is and somewhere nearby to park. For outside work, let us know about side access, gates and any upper-floor joints.
- We start by checking each window and door with you.
- Next the failed sealant is cut away and the joint cleaned.
- Deep gaps are filled with backing rod to set the depth.
- A flexible, weatherproof sealant is applied in a colour to suit the frame.
- Finally we tidy up and check each joint.
Preparing for the visit
- Mention any parking rules near the property
- Mention any leaks or damp you’ve noticed
- Where the joints are inside, avoid wetting them before we arrive
Ask for a quote
Every job is quoted individually, so start by telling us what you need. Simply ring 0345 464 0079 or email us and describe the job and send pictures if you have them.
Read more
What we’re called out for in Faversham
Sills take more water than any other part of a window, so the sill ends and the joint below the frame are common leak points. Failed sealant there lets rain into the wall or behind the frame.
Common reasons people contact us are:
- Untidy mastic left by window fitters
- Cracked or shrunken mastic around the frame
- Gaps where the sill meets the wall
- Water coming in at the bottom corners of a door
Letting a property close to Faversham station? Then cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Before booking anyone
- What happens if they find a problem under the old sealant
- Whether they seal over old material or remove it
- Which colour the sealant will be
- What product goes in the joint
Common questions in Faversham
Is Faversham in your area for window mastic?
Yes. Our work covers London and the South East, and Faversham is part of that. You can phone 0345 464 0079 or send us an email and tell us what needs doing.
Is window mastic in a coastal place like Faversham any different?
Coastal weather is harder on outside sealant: there’s more wind-driven rain and, closer to the shore, salt in the air. The right product, a clean joint and the right depth all help it cope.
Can you work on commercial sites?
Yes. Hotels, offices and other businesses use us, and we are fully insured.
Do you have sealant for grey or black windows?
Yes, we choose a colour to suit the frame. Anthracite grey, black, brown and white cover most frames, with clear as an option.
Do you guarantee window mastic?
Yes, with our one-year guarantee. Keeping drainage clear and checking the joints yearly helps them last.
Where are you based?
We’re a Crawley-based firm, with over 20 years’ experience. We work across South East England, London and Scotland.
Do you seal inside as well as outside?
Yes. Outside is the weather seal; inside closes the gap to the plaster. We can do either or both.
Which products do you use?
It depends on the joint: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.
DIY versus a professional finish
If you’re set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it does not work out, we can still put it right.
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.
Windows and doors in Faversham
Faversham is within about 3 miles of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That is hard on the mastic around window and door frames, especially on the side facing the sea. With historic houses such as Belmont House and Gardens (about 3.5 miles south-west) nearby, there’s older building stock in the area around Faversham 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.
In the older streets around Church of St Mary Magdalene, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. For site and facilities teams at buildings such as Ethelbert Road Primary School, larger buildings have plenty of frames, and the mastic around each one ages.
Faversham is about 9 miles west of Canterbury, in Kent. Jobs in Faversham get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. Our area takes in 922 places across Kent, large and small. There’s also a page for Chelmsford, roughly 34 miles from Faversham.
We work across the ME13 postcode area for window mastic and the streets around it. Whether your property is on Bedlington Square, Market Place and Market Street or a nearby road, we can help. Faversham sits on or near the A2 and A251. Close by, we work in Davington (1 mile north-west), The Brents (1 mile north-east), Preston (1 mile south-east), Ospringe (1 mile south-west) and Whitehill (1 mile south-west). Within a short drive, we also cover Ashford (12 miles south), Canterbury (9 miles east), Sittingbourne (7 miles west), Whitstable (7 miles east), Herne Bay (11 miles east) and Minster (8 miles north-west).
Around Faversham
Typical jobs here are in homes near Mechanics Arms, Queen Elizabeth's Grammar School and Oare Meadow, among other places. Faversham has its own railway station: Faversham station. Other landmarks nearby include Newnham Castle (4.2 miles south-west).
Also near Faversham
More services for Faversham
For landlords and businesses
We work for letting agents and landlords as well as homeowners. Sealant work between tenants keeps a property looking cared for before the next move-in.
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Resealing at the right time is simple maintenance.
What the job involves on each surface
Aluminium frames
Coated aluminium needs a compatible sealant and we avoid acetoxy silicones, which can react with some metals. Neutral-cure sealant is the safe choice.
Timber windows & doors
Timber moves with moisture as well as heat, so the joint must stay flexible. We seal onto sound, dry paintwork or timber.