Kent · England
Shelvin Window Mastic
Window mastic for Shelvin and the surrounding area: careful preparation, the right product and tidy work. Call for a quick quote.
- Black, perished sealant on frames
- Damp patches on the reveal after heavy rain
- Sealant in the wrong colour for the frame
How we handle window mastic in Shelvin
A cold draught around a closed window often comes from the frame edge. A new joint stops the air getting through and quietens the whistle on windy days. If the draught is through the window seals instead, we’ll tell you. Common call-outs are for black, perished sealant on frames and mastic that has split away from the wall, on composite doors, timber windows & doors and aluminium frames.
Outdoor sealant needs dry, clean surfaces, so work on frames around Shelvin is planned for dry weather. Tell us about access to every side of the house, including upper-floor windows.
Each job carries a 12-month guarantee.
- Location
- Shelvin (CT4)
- Region
- Kent
- Cover
- One year on every job
- Quotes
- A clear price before we start
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
What the job involves on each surface
uPVC windows
Some uPVC windows were sealed at fitting with a quick bead that never bonded. We cut it out, back any deep gaps and reseal properly.
Timber windows & doors
Soft or rotten wood cannot be sealed successfully. We will point out any rot we find, as that’s a job for a joiner.
What happens on the day
The work is kept neat and contained to the area we are working on. Expect the work to take a few hours for a few frames, or a day or more for a whole house, and we explain the cure time before we leave. In a small place like Shelvin, access is normally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We start by checking each window and door with you.
- We remove the old mastic and clean the frame and the wall.
- We fit backing rod in deep gaps so the sealant is the right depth.
- A flexible, weatherproof sealant is applied in a colour to suit the frame.
- We clear up and check every joint is fully closed.
Getting ready for the visit
- Mention any sign-in or site rules at work premises
- Clear the area around the work
- Mention any parking rules near the property
Get a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and email photos if that’s easy.
Read more
Leave it or put it right?
Once mastic fails, rain can get between the frame and the wall. Over time that can mean damp patches, damaged plaster and rotting timber. A reseal is a much smaller job. Around Shelvin, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you are not sure whether it needs doing, call 0345 464 0079 or drop us an email and we will give you an honest view and a quote.
Why Shelvin clients choose us
- 4.9 on Google from 180+ five-star reviews
- Sanitary silicone with an anti-fungal additive in wet areas
- Homes, businesses and hotels
- Any old sealant cut out fully, not covered over
Read our cost guide and our reviews.
Common problems we fix in Shelvin
Joint shape matters as much as the product. A thin smear across a wide gap has nothing to it, while a joint packed solid can’t stretch. That is what backing rod is for.
The most common problems we see are:
- Rain getting in at the frame or under the sill
- A bead that does not match the frame
- Mastic that has split away from the wall
- Cold air getting in at the frame edge
Rented homes near Shepherds Well station change hands often, and sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
What your quote should include
- What preparation is included
- Who does the work, and how experienced they are
- Whether the sealant suits the joint
- The length of the guarantee
Towns and villages near Shelvin
Also in Shelvin
FAQs for Shelvin
Do you work for landlords with property near Shepherds Well station?
Yes. We work for landlords and letting agents as well as householders, and several properties can be quoted together. Just ring 0345 464 0079 or drop us an email with the address and what needs doing, and we’ll send you a clear quote.
Can you do window mastic in Shelvin?
Yes. We work across London and the South East, and Shelvin is part of that. Just ring 0345 464 0079 or drop us an email with a few details of the job.
How do I get a quote for window mastic in Shelvin?
There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. You’ll get a clear quote before any work starts.
Can you reach windows above the ground floor?
Yes, if safe access is possible. Higher or awkward frames may need extra access, and we will confirm what’s needed.
Is the new sealant paintable?
It depends on the sealant. Some hybrid sealants can be painted; silicone can’t. Mention any painting plans before any work starts.
Where are you based?
We are a Crawley-based firm, with over 20 years’ experience. We work across South East England, London and Scotland.
What sealant do you use?
We choose the sealant for the joint, not the other way round. Movement, water and weather all affect the choice, and we will tell you what we’re using.
Are you insured?
Yes. We are fully insured, and we can confirm the details when we quote.
Looking after it afterwards
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Wash the frames with mild soapy water
- Wipe condensation off the frames
- Look round the frames every year or so
- Make sure the drainage slots aren’t blocked
Check the drainage slots in the frames aren’t blocked, so water can run away instead of sitting against the joint.
Leaks normally show up in wet, windy weather, but sealant goes on best when frames and walls are dry. Dealing with it when you first notice a crack avoids chasing leaks through the wet months.
DIY sealant or a professional job?
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Windows and doors in Shelvin
Historic houses like Acrise Place (about 4 miles south-west) are a reminder that the area around Shelvin 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.
If you live in an older home near Church of St Martin, the joint between an old wall and a newer frame is normally the first place rain gets in.
Shelvin is about 6 miles north-west of Dover, in Kent. Whether you are in the middle of Shelvin or further out, we cover window mastic for every kind of property. Shelvin is one of 922 towns and villages in Kent where we work for window mastic. Chelmsford is on our list too, around 49 miles away.
Jobs for window mastic in CT4 works the same way as everywhere else we cover. If you need window mastic at a property on Clints Lane and Shelvin Lane or anywhere close by, our applicators can take on the job. We also cover Wootton (1 mile south-west), Denton (1 mile west), Lodge Lees (1 mile west), Breach (2 miles west) and Selsted (2 miles south). Within a short drive, we also cover Ashford (14 miles west), Canterbury (8 miles north-west), Dover (6 miles south-east), Folkestone (7 miles south), Ramsgate (14 miles north-east) and Whitstable (13 miles north-west).
What’s near Shelvin
Around Shelvin, our work takes us to homes and buildings near Coach House Hotel and the streets around them. Shelvin’s nearest station is Shepherds Well station, about 1.9 miles east of the centre. Nearby you’ll also find Buckland Hospital (5.9 miles south-east).
What affects the cost of window mastic
The quote reflects the job in front of us. We look at:
- Which sealant suits the joint
- Any working-time requirements on site
- The amount of work
- The old material and how stubborn it is
Every job is a little different, so each one gets its own quote. Size, access and the product the joint needs all play a part.
What to tell us for a quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- The address or postcode of the job
- The rough size of the job
- Photos by email, if that’s easy
- Whether it has been sealed before
Asking for a quote is easy: let us know the job and the location and its rough size. A few photos by email make the job easier to understand.