Kent · England
Maidstone Window Mastic
Window mastic for Maidstone, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Cracked sealant at the sill ends
- Black, perished sealant on frames
- Hard, cracked sealant around windows
Landlord and commercial work in Maidstone
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. Several properties can go on one quote.
We also work for property managers and facilities teams in Maidstone and across Kent. We can quote a run of properties together, and we’re fully insured for the work.
Window mastic in Maidstone
Most frames have an outside joint and an inside one. The external joint is the weather seal; inside, the joint between frame and plaster stops draughts and tidies the reveal. Either or both can be done. We work on window sills, timber windows & doors and patio & French doors, and common reasons people get in touch are rain getting in at the frame or under the sill and mastic that’s falling out in pieces.
In Maidstone, windows range from older timber frames to modern uPVC and aluminium. Each needs the right sealant, and each joint wears out eventually.
All of our work is guaranteed for twelve months.
Why act early in Maidstone
Failed mastic is not a reason to replace sound windows. If the frames and glass are in good order, resealing the joints is often all that’s needed. If we find failed glass units or worn seals, we will tell you. For businesses in Maidstone, a room closed because of a leak or mould costs more than the sealant, so it pays to replace failing joints before they get that far.
Doing several joints on one visit is usually more efficient than separate visits, so tell us about everything that needs sealing. We’ll send you a clear quote for the lot.
Why Maidstone clients choose us
- You choose the colour before work begins
- ARBOMaster approved applicator
- Anti-fungal sanitary silicone in wet areas
- Quality sealants from Arbo and Everbuild
Take a look at what affects the cost and customer reviews.
DIY versus a professional finish
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Towns and villages near Maidstone
More services for Maidstone
Aftercare tips
So the new joints stay in good condition:
- Clear any debris from frame drain holes
- Wash the frames with mild soapy water
- Wipe condensation off the frames
- Avoid blasting the frames with a pressure washer
Keep sill grooves and drainage slots clear, so rain drains out rather than building up at the sealant.
A small gap around a frame only grows. As old mastic keeps shrinking, the gap widens, and heat escapes around the frame. Resealing closes it.
Common problems we fix in Maidstone
Older frames were often sealed with products that set hard. Once it’s rigid, every bit of frame movement pulls at it, and a gap opens along one edge.
Signs it’s time to call us include:
- Cracked or shrunken mastic around the frame
- Gaps where the sill meets the wall
- A bead that doesn’t match the frame
- Old mastic that has gone black or come away
Managing a site like South Borough Primary School? Then its window and door frames need their mastic kept sound, just like a home’s.
Questions to ask before booking
- What preparation is included
- How the colour is chosen
- What the quote includes, VAT included or not
- Whether all the old sealant comes out first
What happens on the day
We work through the job in order: protection first, then preparation, sealing and a tidy-up. Typically it takes a morning for a couple of windows and a door, and the area is left clean. Commercial jobs in Maidstone can be planned out of hours where a building can’t close, while home visits are arranged within our normal working hours, Monday to Saturday.
- First, we confirm safe access to each frame.
- All the failed sealant is cut away, along with any loose debris.
- The surfaces are cleaned and left dry, and primed where the sealant calls for it.
- Deep voids are backed, then the sealant is gunned in.
- We tool the joint so water runs off, then clear up.
Getting ready for the visit
- For indoor joints, keep the area dry beforehand if you can
- Mention if the joints have been sealed before
- Let us know if you’ve seen damp or leaks
Getting a quote
We quote each job on its own, so the first step is telling us about yours. Just phone 0345 464 0079 or send us an email with the details and send photos if you have them.
Read more
When something else is needed
Before you book, it’s worth knowing the limits too:
- Condensation trapped between the panes
- A frame that has rotted at the joint
- A sash or casement that will not close properly
If you are not sure, just call 0345 464 0079 or drop us an email and we will give you a straight answer before you book.
Joints and surfaces we work on
- Window sills
- Aluminium frames
- Timber windows & doors
- Patio & French doors
- Composite doors
- uPVC windows
Common questions in Maidstone
Do you work for landlords with property near Maidstone West station?
Yes, rental work is part of what we do. You can call 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before we start.
Is window mastic in Maidstone guaranteed?
Every job comes with our 12-month guarantee, wherever it is. We are also fully insured and ARBOMaster approved.
Can new window sealant be painted?
Not generally, if it’s silicone. We choose the product with your decorating in mind, so mention it when you book.
Do the sealants smell?
Possibly a little. It fades as the sealant cures.
When is the sealant fully cured?
That depends on the sealant used, so follow the cure time we give you when we finish.
What information do you need?
Let us know what needs doing and where, plus photos if you have them. If we need more, we will ask.
Can I add another job to the visit?
Yes, and it often makes sense. Doing several areas at once is normally more efficient.
Will new mastic stop draughts?
Often, yes. The gap between frame and wall is a common source of draughts, and sealing the inside and outside joints closes that path.
Window mastic in Maidstone: local notes
With historic houses such as Stoneacre (about 2.4 miles south-east) nearby, there’s older building stock in the area around Maidstone as well as newer homes. 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. London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For landlords with property near Maidstone West station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first. Homes close to St Philip's Church include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Maidstone is about 31 miles south-east of London, in Kent. Whether you are in the middle of Maidstone or further out, we cover window mastic for every kind of property. We cover 922 towns and villages across Kent, large and small. London is on our list too, around 31 miles away.
Postcode districts we cover here for window mastic: ME15, ME16, ME14 and ME17. If you need window mastic at a property on Square Hill Road, Arundel Square and Square Hill or a nearby road, we can help. Maidstone is on the A20 and A26, so it’s easy for us to get to with everything needed for window mastic. Nearby, we also carry out window mastic in Tovil (1 mile west), Foley Park (1 mile north), Shepway (1 mile south-east), Penenden Heath (1 mile north) and Weavering (1 mile east). We also work in nearby towns such as Sittingbourne (10 miles north-east), Sevenoaks (15 miles west), Royal Tunbridge Wells (14 miles south-west), Gravesend (13 miles north-west), Tonbridge (12 miles south-west) and Northfleet (14 miles north-west). Maidstone is one of the larger places we cover in Kent.
Landmarks near Maidstone
Typical jobs here are in homes near St Augustine Academy, River Len LNR and Maidstone Grammar School, among other places. The closest station to Maidstone is Maidstone West station, roughly 0.6 miles north-west of the centre. A little further out are Maidstone Carriage Museum (within half a mile north-west) and Oakwood Hospital (1.8 miles west). The countryside around Maidstone includes Burham Down and Boxley Hills.

