Kent · England
Densole Window Mastic
Mastic around window and door frames, sills and patio doors for Densole, backed by a 12-month guarantee. Ask us for a quote.
- Sealant in the wrong colour for the frame
- Old mastic that has gone black or come away
- Damp patches on the reveal after heavy rain
What sealant work cannot fix
New sealant cannot fix everything, and we’ll tell you before we start. It won’t solve:
- A sash or casement that won’t close properly
- Misting between the panes of a double-glazed unit (that needs a new unit)
- Worn gaskets, brush seals or a door that has dropped
If in doubt, phone 0345 464 0079 or send us an email and we’ll say what we think.
Surfaces we seal
- Timber windows & doors
- Patio & French doors
- uPVC windows
- Aluminium frames
- Window sills
- Composite doors
About our window mastic in Densole
Colour matters on a frame. White, brown, anthracite grey, black and clear sealants are all available, so the line suits the frame instead of standing out. If you have cracked or shrunken mastic around the frame and draughty joints inside around the window, we can put it right.
Somewhere as small as Densole, 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.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we’ll sort it.
- Place
- Densole (CT18)
- Region
- Kent
- Guarantee
- A year, on every job
- Quotes
- A clear price before we start
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Why it’s worth doing now in Densole
Getting a straight, even bead on an outside frame takes practice, especially on upper floors. A professional job is cut out properly, backed where needed and finished neatly, using a product chosen for the frame and wall. In a small place like Densole, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
Doing several joints on one visit is generally more efficient than separate visits, so it’s worth mentioning everything you’d like done. You’ll get one clear quote for the whole job.
Why book with us
- Over 20 years’ experience
- Domestic, commercial and hotel work
- We agree the colour with you first
- An ARBOMaster approved applicator
Read how sealant jobs are priced and our reviews.
Landlord and commercial work in Densole
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
We also work for property managers and facilities teams in Densole and across Kent. Several sites can go on one quote, and we are fully insured for the work.
DIY sealant or a professional job?
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.
Questions from Densole
Do you cover Densole for window mastic?
Yes. Our work covers London and the South East, and Densole is part of that. Just call 0345 464 0079 or drop us an email with a few details of the job.
Do you cover smaller places like Densole?
Yes, Densole is covered. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Will new mastic stop draughts?
Often, yes. Air often gets in between the frame and the wall, and sealing the inside and outside joints closes that path.
How long should I leave it?
Different products cure at different speeds, so please follow the time we give you.
How much does window mastic cost in Densole?
Size, access and the old material all affect the cost. Call for a quick quote.
Where do you work from?
Our base is Crawley, with over 20 years’ experience. We work across South East England, London and Scotland.
Do you seal inside as well as outside?
Yes. Plenty of draughts come through the inside joint as well as the outside, so it can be worth sealing both.
Do you have sealant for grey or black windows?
Yes. White, brown, anthracite grey, black and clear sealants are all available.
What happens on the day
Good joint work is mostly preparation, and we don’t rush it. Every joint is cleaned and dried before new material goes in. In total, it generally takes most of a day for a typical house, less for a few frames. Somewhere like Densole needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- First, we go round the frames with you and agree the list.
- 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.
Before we arrive
- Try not to wet indoor joints just before the visit
- On commercial sites, let us know about site rules
- Mention any tricky access
How to get a quote
Asking for a quote is easy: let us know what needs doing and where. Photos by email help us understand the job.
Related advice
Densole homes and the weather
Historic houses like Acrise Place (about 1.2 miles north-west) are a reminder that the area around Densole has older buildings as well as new. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic. 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.
Letting a property close to Folkestone West station? Then cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets. Managing a site like Hawkinge Primary School? Then the mastic around its windows and doors needs looking after like any other building’s. For an older house near a landmark such as St Luke's, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Densole is about 3 miles north of Folkestone, in Kent. For window mastic in and around Densole, please ring 0345 464 0079 or drop us an email for a quick quote. We’re based in Crawley and cover Kent, Densole included. Densole is one of 922 towns and villages in Kent we cover for window mastic. Chelmsford is on our list too, about 51 miles from Densole.
We work across the CT18 postcode area for window mastic. You’ll find streets such as St John's Close, St John's Way and Canterbury Road, and we cover them all. We also cover Hawkinge (1 mile south), Swingfield Minnis (1 mile north), Old Hawkinge (2 miles south-east), Arpinge (2 miles south-west) and Selsted (2 miles north). We also work in nearby towns such as Ashford (13 miles west), Canterbury (11 miles north), Dover (6 miles east), Folkestone (3 miles south), Deal (12 miles north-east) and Hythe (5 miles south-west).
Local landmarks in Densole
For rail, the closest station is Folkestone West station, about 3.1 miles south of the centre. Nearby you’ll also find Elham Valley Countryside Centre And Railway Museum (2.7 miles south-west) and Folkestone Castle (2.1 miles south). For a walk, there’s Cheriton Hill.
What affects the cost of window mastic
There’s no set price list, because jobs vary so much. What we look at:
- Access and height
- Mould in or behind the old joints
- How many rooms, windows or areas are involved
- Which sealant suits the joint
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you’re unsure, phone 0345 464 0079 or drop us an email for an honest opinion and a quote.
Helping us quote
Photos by email are helpful but not essential. Try to tell us:
- The rough size of the job
- If it’s domestic, commercial or a hotel
- Whether it has been sealed before
- The address or postcode of the job
To get a quote, ring 0345 464 0079 or drop us an email with the location and a short description of the problem. You’ll have a clear quote before any work starts.
Surface by surface
Aluminium frames
Aluminium moves with heat, and the frames are often slimmer than uPVC. A neat, narrow bead in a colour to match suits the frame.
Patio & French doors
Heavy door frames can move more than windows. The sealant must cope with it, where a rigid one would crack.