Kent · England
Fairseat Window Mastic
Mastic around window and door frames, sills and patio doors for homes and businesses in Fairseat and across Kent. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Cracked or shrunken mastic around the frame
- A bead that doesn’t match the frame
- Black, perished sealant on frames
Can I do it myself?
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.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
How we handle window mastic in Fairseat
If you can feel air around a shut window, the gap is often at the frame. Resealing that joint can make a room feel noticeably less draughty and quietens the whistle on windy days. If the draught is through the window seals instead, we will tell you. We work on window sills, aluminium frames and timber windows & doors, and people most often call us about mastic that’s falling out in pieces and cracked or shrunken mastic around the frame.
Homes in small places like Fairseat 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.
Each job carries a 12-month guarantee, large or small.
- Location
- Fairseat (TN15)
- Region
- Kent
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Windows and doors in Fairseat
Historic houses like Old Soar Manor (about 4.5 miles south) are a reminder that the area around Fairseat 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. London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
If you live in an older home near Holy Innocents, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. Letting a property close to Borough Green & Wrotham station? Then cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Fairseat is about 7 miles north-east of Sevenoaks, in Kent. Fairseat gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. Our area takes in 922 places across Kent, from the larger towns to small villages. For nearby work, see our London page.
Our applicators cover all of the TN15 postcode area for window mastic and the streets around it. Streets in the area include Vigo Road and Platt House Lane, and we cover them all. Other places close to Fairseat include Hodsoll Street (1 mile north), Labour-in-vain (1 mile south-west), Culverstone Green (1 mile north-east), Trottiscliffe (1 mile south-east) and Vigo Village (1 mile east). Within a short drive, we also cover Maidstone (10 miles south-east), Dartford (9 miles north-west), Sevenoaks (7 miles south-west), Royal Tunbridge Wells (14 miles south), Gravesend (7 miles north) and Tonbridge (9 miles south).
Landmarks near Fairseat
In Fairseat, that means homes and buildings near Trosley Country Park, among other places. Fairseat’s nearest station is Borough Green & Wrotham station, about 2.6 miles south. Well-known places in the area include Ightham Court (2.9 miles south-west) and Coldrum Long Barrow (2 miles east).
Why deal with it now?
Working on frames from a ladder with a sealant gun is not easy, especially on upper floors. A professional job is cut out properly, backed where needed and finished neatly, in a sealant suited to the wall. In a small place like Fairseat, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
The cost reflects the work involved, not a rough estimate. That’s why we ask about the job first and agree the price before starting.
Why choose Mr Mastic in Fairseat
- Tidy, careful work
- ARBOMaster approved applicator
- We never seal over old sealant
- A sealant colour to suit the surroundings
See what affects the cost or our reviews.
What affects the quote in Fairseat
Your quote is based on your job. We take into account:
- How many rooms, windows or areas are involved
- Whether old sealant or filler has to be cut out
- Mould in or behind the old joints
- How much there is to do
Commercial jobs are quoted on the same basis as homes: how much there is to do, how we reach it and what it needs, plus any working-time requirements on site. Call for a quick quote and we’ll explain what it covers.
What to tell us for a quote
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- Photos by email, if that’s easy
- Where the job is, and your postcode
- What the problem is, such as mould, gaps, leaks or cracking
- Any access issues, like height or stairs
To get a quote, ring 0345 464 0079 or email us and tell us where the job is and what the problem looks like. We will give you a clear price before any work starts.
The process
There’s no need to move everything out, just the space around the work. Everything nearby is protected, and the job takes a few hours for a few frames, or a day or more for a whole house for a typical job. Somewhere as small as Fairseat, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- 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.
- Every joint is tooled smooth and checked before we leave.
Before we arrive
- Tell us about access, such as stairs, a lift or high-level joints
- On commercial sites, let us know about site rules
- Tell us about any previous sealing or DIY attempts
Get a quote
It all starts with a short chat. Describe the problem, the location and the size of the job, and we’ll explain how we’d tackle it. Whenever you are ready, ring 0345 464 0079 or email us.
Advice
Questions from Fairseat
Will you come out to Fairseat?
Yes, we do. We work across London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Is Fairseat in your area for window mastic?
Yes. Our work covers London and the South East, and Fairseat is part of that. Just phone 0345 464 0079 or email us with a few details of the job.
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.
When is the sealant fully cured?
Many sealants skin over quickly but take longer to cure fully. We will tell you how long to leave the joint.
Can new window sealant be painted?
Not if it’s silicone. We choose the product with your decorating in mind, so mention it when you book.
Can I add another job to the visit?
Yes. Tell us about everything you’d like done and we will quote it together.
Where are you based?
We work from Crawley. Our applicators cover Fairseat.
What do you need from me for a quote?
Just the basics: the address or postcode, what’s wrong and any access issues. After that, simply ring 0345 464 0079 or drop us an email.
Common problems we fix in Fairseat
Mastic ages in the weather. Sunlight dries the surface out, until it loses its stretch and starts to crack.
Signs it’s time to call us include:
- Whistling draughts around closed windows
- Rain getting in at the frame or under the sill
- Rushed sealant from a window installation
- Mastic that is falling out in pieces
Schools such as Wrotham School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.
What to look for in a quote
- What the cure time is
- Are they insured?
- How the surfaces are prepared before sealing
- How hidden problems are handled
Different surfaces, different methods
Window sills
Masonry sills can have joints where water gets in, and the joint under the frame can let rain run behind. Those are sealed with a product suited to stone or concrete.
Composite doors
Composite doors are normally hung in an uPVC-type frame, and the joint around it is sealed like a window. We match the colour to the frame.
What sealant work cannot fix
New sealant can’t fix everything, and we’ll tell you before work begins. It will not solve:
- A sash or casement that won’t close properly
- A frame that has rotted at the joint
- Damp problems in the wall away from the window
Not sure which it is? You can ring 0345 464 0079 or drop us an email and we’ll tell you honestly.
What we seal
- Composite doors
- Patio & French doors
- Window sills
- Aluminium frames
- Timber windows & doors
- uPVC windows