Kent · England
Wrotham Heath Window Mastic
Window mastic across Wrotham Heath and nearby, with old sealant always removed completely and a 12-month guarantee.
- Leaking joints at the ends of sills
- Hard, cracked sealant around windows
- Water coming in at the bottom corners of a door
What affects the cost of window mastic
We quote each job individually. These are the things that affect it:
- The size of the job
- Any mould that needs treating
- The product the joint needs
- Whether the work is at height
No two jobs are quite the same, so we quote each one individually. Size, access and the product the joint needs all play a part.
Asking for a quote
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- The address or postcode of the job
- The rough size of the job
- A few pictures by email, if you can
- The problem you’ve noticed
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we will talk you through what we’d do. When it suits you, ring 0345 464 0079 or send us an email.
Window mastic in Wrotham Heath, done properly
A window frame and the wall around it expand and shrink at different rates. Heat and cold make frames grow and shrink against brick or render that hardly moves. So the sealant has to stretch and recover, which is why we use a low-modulus product. We work on aluminium frames, composite doors and window sills, and people most often call us about rain getting in at the frame or under the sill and draughty joints inside around the window.
Outdoor sealant needs dry, clean surfaces, so work on frames around Wrotham Heath is planned for dry weather. Tell us about access to every side of the house, including upper-floor windows.
Our work is backed for twelve months, in Wrotham Heath and everywhere else we cover.
- Place
- Wrotham Heath (ME19, TN15)
- Wider area
- Kent
- Guarantee
- One year on every job
- Price
- A clear price before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
What happens if it’s left?
The work is quick compared with the damage it prevents: the visit takes a morning for a couple of windows and a door. Leave it until water is coming in and you may need plastering and decorating as well. In a small place like Wrotham Heath, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
There are no prices on our website, because the cost depends so much on the job itself. For a quick quote, please phone 0345 464 0079 or email us and we’ll talk you through it.
Why choose Mr Mastic in Wrotham Heath
- ARBOMaster approved applicator
- Arbo and Everbuild products
- White, clear, grey or another colour, product permitting
- Over 20 years’ experience
Take a look at our cost guide or our reviews.
Other services in Wrotham Heath
Window mastic in Wrotham Heath: local notes
With historic houses such as Old Soar Manor (about 2.7 miles south-west) nearby, there’s older building stock in the area around Wrotham Heath as well as newer homes. 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.
Letting a property close to Borough Green & Wrotham station? Then sound mastic around windows and doors keeps out the draughts and damp that tenants notice first. If you look after a building such as Platt Church of England Voluntary Aided Primary School, larger buildings have plenty of frames, and the mastic around each one ages. For an older house near a landmark such as Church of St Margaret, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Wrotham Heath is about 7 miles east of Sevenoaks, in Kent. Whether you are in the middle of Wrotham Heath or further out, window mastic is available for homes and businesses alike, from flats and houses to offices and hotels. Wrotham Heath is one of 922 places in Kent where we work for window mastic. We also work in London, around 24 miles away.
All of ME19 and TN15 is within our area for window mastic. If you need window mastic at a property on London Road, Sandy Lane and Clearway or anywhere close by, our applicators can take on the job. We also cover the places around Wrotham Heath: Comp (1 mile south-west), Platt (1 mile south-west), Offham (1 mile east), Borough Green (2 miles west) and Crouch (2 miles south-west). Within a short drive, we also cover Maidstone (8 miles east), Dartford (11 miles north-west), Sevenoaks (7 miles west), Royal Tunbridge Wells (12 miles south), Gravesend (9 miles north) and Tonbridge (8 miles south-west).
Near you in Wrotham Heath
Around Wrotham Heath, our work takes us to homes and buildings near Wrotham School and Trosley Country Park and the streets around them. For rail, the closest station is Borough Green & Wrotham station, about 1.9 miles west. Nearby you will also find Beechin Wood Archery Museum (1.2 miles south-west) and Ightham Court (2.7 miles west).
What we do, step by step
We work through the job in order: protection first, then preparation, sealing and a tidy-up. For most jobs that takes anything from an hour or two to a full day, depending on how many frames there are, and the area is left clean. Somewhere as small as Wrotham Heath, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- We start by checking each window and door with you.
- 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.
- 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
- For indoor joints, keep the area dry beforehand if you can
- Clear the area around the work
Getting a quote
Every job is quoted individually, so start by telling us what you need. Just phone 0345 464 0079 or send us an email with the details, and pictures are welcome.
Advice
When it isn’t the sealant
A few problems are outside what sealant work can do:
- Broken hinges, locks or handles
- Damp problems in the wall away from the window
- A frame that has rotted at the joint
If in doubt, ring 0345 464 0079 or email us and we’ll say what we think before booking.
Surfaces we seal
- Composite doors
- uPVC windows
- Patio & French doors
- Aluminium frames
- Timber windows & doors
- Window sills
Common questions in Wrotham Heath
Is Wrotham Heath within the area you cover?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
I let a flat near Borough Green & Wrotham station. Can you help?
Yes, landlords and agents are among the people we work for. You can ring 0345 464 0079 or send us an email with the details for a clear quote.
Where are you based?
We work from Crawley. We cover Wrotham Heath and the rest of Kent, along with the rest of our area.
Do you seal inside as well as outside?
Yes, we do both. Inside, the joint between frame and plaster is sealed neatly, using a paintable sealant if you want to decorate.
Can I add another job to the visit?
Yes. Tell us about everything you’d like done and we’ll quote it together.
Do you have sealant for grey or black windows?
Yes. We can use white, brown, anthracite grey, black or clear.
Can resealing stop a draught around my window?
In many cases. The gap between frame and wall is a common source of draughts, and resealing inside and out closes it.
What information do you need?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
Should I try it myself first?
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.
If you are 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.
How to look after the new joints
Once the sealant has cured, a few habits help it last:
- Clean frames with a soft cloth and soapy water
- Walk round the house once a year and look at the joints
- Keep paint and stain on wooden frames in good order
- Keep paint off silicone joints
Check the drainage slots in the frames are not blocked, so rain drains out rather than building up at the sealant.
A small gap around a frame only grows. As the old mastic shrinks further, more air gets through, and heat escapes around the frame. Resealing closes it.
Surface by surface
Aluminium frames
Coated aluminium needs a compatible sealant, and acetoxy silicones are not used, as they can attack some metals. We use a neutral-cure product.
uPVC windows
Fitters’ mastic on plastic frames is sometimes thin and rushed. We cut it out, back any deep gaps and reseal properly.