Kent · England
Frinsted Window Mastic
Mastic around window and door frames, sills and patio doors in Frinsted, with a one-year guarantee on every job. Ask us for a quote.
- Mastic that has split away from the wall
- Gaps between the frame and the inside reveal
- Gaps left after new windows were fitted
About our window mastic in Frinsted
Whether it’s one leaking patio door or every frame on the house, you will get a clear quote before work begins. Just ring 0345 464 0079 or send us an email and tell us how many frames there are and how they’re reached. Common call-outs are for old mastic that has gone black or come away and mastic that has split away from the wall, on window sills, aluminium frames and timber windows & doors.
Somewhere as small as Frinsted, older homes often have timber frames set in stone or brickwork. Not every older frame suits a modern silicone bead, and sometimes a traditional sand mastic is the better choice.
Big or small, it’s backed by our 12-month guarantee in Frinsted and across Kent.
- Place
- Frinsted (ME9)
- Wider area
- Kent
- Guarantee
- 12 months on all our work
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
How the visit works
Our applicators work methodically: protect, prepare, seal, tidy. For most jobs that takes most of a day for a typical house, less for a few frames. In a small place like Frinsted, access is generally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We check each frame and agree which ones need doing.
- Next the failed sealant is cut away and the joint cleaned.
- We fit backing rod in deep gaps so the sealant is the right depth.
- New exterior sealant goes on in a matching colour and is tooled smooth.
- Finally we tidy up and check each joint.
Getting ready for the visit
- Tell us if parking is tricky
- Keep children and pets away from the work area
- Move anything stored near the joints
How to get a quote
Asking for a quote is easy: let us know the job and the location. Photos by email help us understand the job, and we will come back to you with a quote.
Read more
DIY versus a professional finish
If you’ve already had a go yourself, that’s fine. We cut it out and start again.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
What we are called out for in Frinsted
Plenty of failed mastic was poorly applied in the first place. Sealant run over dust, wet brick or loose mortar never bonded as it should, and it lets go sooner than it should.
The most common problems we see are:
- Water coming in at the bottom corners of a door
- Gaps between the frame and the inside reveal
- Black, perished sealant on frames
- Gaps left after new windows were fitted
For site and facilities teams at buildings such as Milstead and Frinsted Church of England Primary School, the mastic around its windows and doors needs looking after like any other building’s.
Before booking anyone
- Whether the sealant suits the joint
- Whether VAT is included
- How much experience the applicator has
- Are they insured?
FAQs for Frinsted
Can you help a landlord with a rental near Harrietsham station?
Yes. We work for landlords and letting agents as well as householders, and several properties can go on one quote. Just call 0345 464 0079 or email us with the address and what needs doing, and we’ll send you a clear quote.
Do you cover Frinsted for window mastic?
Yes, Frinsted is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or email us with a few details of the job, and we will give you a clear quote.
Can I add another job to the visit?
Yes, and it often makes sense. Combining jobs makes good use of the visit, so mention them when you ask for a quote.
What information do you need?
The location, the problem and the rough size of the job. Photos by email help too.
Can you seal the gap between the frame and the plaster indoors?
Yes. The outside joint keeps the weather out, and the inside joint stops draughts and finishes the reveal. We do one or both.
Can you work on commercial sites?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. Working times can be discussed when we quote.
Do you work on first-floor windows?
Usually, yes. Access is planned before we start.
Where are you based?
Our base is in Crawley, West Sussex, and we work across South East England, London and Scotland.
Other services in Frinsted
Keeping the joints in good condition
Good habits help new joints last longer. A few tips:
- Repaint timber before it’s bare
- Keep solvents and bleach off the sealant
- Avoid blasting the frames with a pressure washer
- Ventilate rooms so frames don’t stay wet inside
Keep the new mastic undisturbed while it cures, following the cure time we give you. Keep jet washers away from the frames.
Signs to watch for: cracks in the mastic, gaps you can see light through, damp on the reveal or mould around the inside of the frame. Any of these is worth a call.
For landlords and businesses
Failed sealant is one of the commonest items on a check-out report. We can quote for more than one property at once.
If you manage several properties in or around Frinsted, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs, and pictures by email help.
What affects the cost of window mastic
Some jobs are bigger than they look, and some smaller. The main factors:
- Which sealant suits the joint
- Access and height
- Any working-time requirements on site
- The number of rooms or windows
What it costs depends on the size of the job, how hard the old material is to remove and access to the work. We give a clear quote before any work starts.
Helping us quote
To help us quote quickly, please include:
- If someone has resealed it before
- The address or postcode of the job
- The problem you’ve noticed
- How we’d reach the joints
We do not publish a price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To arrange one, ring 0345 464 0079 or send us an email.
Why it’s worth doing now in Frinsted
Choosing the product is half the job. Decorators’ caulk and bathroom silicone aren’t designed for outside joints that move. An exterior, low-modulus sealant stays flexible in sun and frost. In a small place like Frinsted, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
Some things make a job bigger or smaller: the old material and how easily it comes out, whether mould needs treating, and whether we need extra access for height. Your quote takes all of that into account.
What you get with us
- Any old sealant cut out fully, not covered over
- Sanitary silicone with an anti-fungal additive in wet areas
- Colour agreed with you before any work starts
- White, clear, grey or another colour, product permitting
Windows and doors in Frinsted
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. Historic houses like Leeds Castle (about 4 miles south-west) are a reminder that the area around Frinsted has older buildings as well as new. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic.
If you let a flat or house near Harrietsham station, renewing tired window mastic between tenants heads off draught and damp complaints. In the older streets around St Giles, the joint between an old wall and a newer frame is usually the first place rain gets in.
Frinsted is about 4 miles south of Sittingbourne, in Kent. Across the ME9 area, we can carry out window mastic at your property. 922 places in Kent are on our list. We also work in Chelmsford, around 33 miles away.
We cover every part of the ME9 postcode area for window mastic and the streets around it. If you need window mastic at a property on The Street, Bottom Pond Road and Dray's Field or a nearby road, our applicators can take on the job. We also cover the places around Frinsted: Milstead (1 mile north-east), Hollybushes (2 miles east), Bluetown (2 miles east), Wichling (2 miles east) and West Street (2 miles south-east). Further out, we also cover Maidstone (8 miles west), Ashford (12 miles south-east), Sittingbourne (4 miles north), Whitstable (15 miles east), Faversham (8 miles east) and Minster (10 miles north-east).
What’s near Frinsted
Around Frinsted, our work takes us to homes and buildings near The Blacksmith's Arms Public House and the streets around them. For rail, the closest station is Harrietsham station, about 3 miles south-west of the centre. Other landmarks nearby include Leeds Castle (4 miles south-west) and Laundry Museum (3.8 miles south-west).