Kent · England
Window & door mastic in Chalk, Kent
Window mastic in Chalk from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Damp patches on the reveal after heavy rain
- Whistling draughts around closed windows
- Leaking joints at the ends of sills
Window mastic in Chalk
From a single sill to a whole house of windows, the work is priced before anything is done. To get one, ring 0345 464 0079 or email us with the number of frames and any access details. We work on timber windows & doors, window sills and composite doors, and the jobs we see most are gaps left after new windows were fitted and white mastic on grey or black frames.
Around Chalk, many homes face open ground, so their windows and doors take the full weather. That exposure dries out and cracks the mastic around frames and sills faster.
Your job is guaranteed for a year, as with all our work.
- Location
- Chalk (DA12)
- Wider area
- Kent
- Cover
- 12 months on all our work
- Quote
- A clear price before work begins
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
What we’re called out for in Chalk
Frames are never completely still. A plastic or aluminium frame lengthens in sunshine and shortens as it cools, while the brick or render around it hardly moves. A sealant that cannot keep up eventually tears.
Keep an eye out for any of the following:
- Sealant in the wrong colour for the frame
- Cracked sealant at the sill ends
- Rushed sealant from a window installation
- Draughty joints inside around the window
Rented homes near Gravesend station change hands often, and cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
What your quote should include
- Whether they’re fully insured
- How long the guarantee is
- How the surfaces are prepared before sealing
- Which colour the sealant will be
Nearby places to Chalk
What else we do in Chalk
Chalk homes and the weather
Chalk is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on the mastic around window and door frames, which can dry out and crack sooner where a building faces the weather. Historic houses like Cobham College (about 2.8 miles south) are a reminder that the area around Chalk has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
If you look after a building such as Thamesview School, the mastic around its windows and doors needs looking after like any other building’s. In the older streets around Church of St Mary, the joint between an old wall and a newer frame is normally the first place rain gets in.
Chalk is about 1 mile east of Gravesend, in Kent. For window mastic in and around Chalk, it’s easy to get a quote: please phone 0345 464 0079 or email us. We cover Kent from our Crawley base, Chalk included. Our area takes in 922 places across Kent. Our Chelmsford page covers work nearby, about 21 miles away.
Every address in DA12 is within our area for window mastic. You’ll find streets such as Chalk Road, Castle Lane and Orlick Road, all of which we cover. Close by, we work in Upper Ifield (1 mile south), Thong (1 mile south), Shorne (1 mile south-east), Shorne Ridgeway (2 miles south-east) and Higham (2 miles south-east). We also work in nearby towns such as Maidstone (12 miles south-east), Sittingbourne (15 miles south-east), Dartford (8 miles west), Sevenoaks (14 miles south-west), Northfleet (3 miles west) and Swanley (10 miles west).
Near you in Chalk
Locally, jobs take us to homes and businesses close to Shorne Woods Country Park, Westcourt Primary School and St John's Catholic Comprehensive and the streets around them. The closest station to Chalk is Gravesend station, roughly 2 miles west of the centre. A little further out are Rochester Castle (4.8 miles south-east) and Gravesham Museum (1.9 miles north-west). Open spaces near Chalk include Gad's Hill and Rede Common.
What we do, step by step
Most of a good job is in the preparation, so that is where we spend the time. Joints are cleaned back and dried before anything new goes in. In total, it normally takes a morning for a couple of windows and a door. Somewhere as small as Chalk, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We check how each frame can be reached safely.
- Old, cracked mastic is removed completely, along with any loose debris.
- Frame and wall are cleaned and must be dry before sealing.
- Backing rod fills deep voids and the sealant goes in on top.
- We tool the joint so water runs off, then clear up.
Getting ready for the visit
- Mention if the joints have been sealed before
- Keep pets and children clear of the area while we work
- Mention any tricky access
Getting a quote
Getting a quote is simple: let us know the job and the location and its rough size. A few photos by email make the job easier to understand, and we’ll come back to you with a quote.
Related advice
How to look after the new joints
After the cure time, these simple habits help:
- Keep timber frames painted
- Check the mastic once a year
- Paint up to the joint, not over it
- Avoid harsh chemicals near the mastic
Try not to touch the new joint while it cures, following the cure time we give you. Keep jet washers away from the frames.
Water trapped behind a failed joint can start rot in timber frames and sills. Rotten timber needs a joiner, not a sealant, so early resealing is worth it.
Quotes for window mastic in Chalk
Jobs vary more than people expect. What affects the quote:
- Which sealant suits the joint
- Whether there’s mould to deal with
- How many rooms, windows or areas are involved
- The old material and how stubborn it is
What it costs depends on how much there is to do, how hard the old material is to remove and how easy the joints are to reach. You’ll have a clear quote before any work starts, so you know where you stand.
What to tell us for a quote
What to tell us when you ask for a quote:
- Any access issues, like height or stairs
- The type of property
- What the problem is, such as mould, gaps, leaks or cracking
- Where the property is
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we will talk you through what we’d do. Whenever you are ready, ring 0345 464 0079 or send us an email.
Work for landlords, hotels and businesses
We also work for property managers and facilities teams in Chalk and across Kent. Several sites can go on one quote, and we’re fully insured.
We work for landlords and agents as well as householders. Sealant work between tenants keeps a property looking cared for before the next move-in.
What the job involves on each surface
Aluminium frames
Coated aluminium needs a compatible sealant. We use a neutral-cure product.
Patio & French doors
The joints around patio doors run a long way, top, sides and threshold. The threshold and the bottom corners take the most water, so we pay close attention there.
What we can’t put right
To be straight with you, there are a few things sealant won’t fix:
- Broken hinges, locks or handles
- Worn gaskets, brush seals or a door that has dropped
- A failed sealed unit that has misted up
If in doubt, phone 0345 464 0079 or email us and we’ll say what we think before booking.
Where we work in Chalk
- Timber windows & doors
- Window sills
- uPVC windows
- Patio & French doors
- Composite doors
- Aluminium frames
FAQs for Chalk
Do you cover smaller places like Chalk?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Do you work for landlords with property near Gravesend station?
Yes. We work for landlords and agents as well as homeowners. You can call 0345 464 0079 or drop us an email with the details for a clear quote.
Can new window sealant be painted?
That depends on the product. Some hybrid sealants can be painted; silicone cannot. Mention any painting plans before we start.
Do you work on first-floor windows?
Yes, where they can be reached safely. Tell us about access when you get in touch so we can plan the job.
Is it OK to seal over old sealant?
No. We remove every bit of old sealant first.
Does the work come with a guarantee?
Yes, for 12 months. A yearly look at the joints helps them last.
How long does it take to reseal the windows on a house?
It depends on access, the old mastic and the size of the frames. You’ll know the timing when we quote.
Can I add another job to the visit?
Yes. Just list everything you need.