Medway · England
Window & door mastic in Hempstead, Medway
Mastic around window and door frames, sills and patio doors for Hempstead, backed by a 12-month guarantee. Ask us for a quote.
- Cold air getting in at the frame edge
- Draughty joints inside around the window
- Leaking joints at the ends of sills
Surface by surface
Window sills
Masonry sills can have joints where water gets in, and the joint under the frame can let rain run behind. We seal those with a sealant suited to masonry.
uPVC windows
Plastic frames move a lot between a hot afternoon and a cold night, so the joint needs a low-modulus sealant that stays flexible. We match white, brown, anthracite grey and black frames.
Window mastic for homes and businesses in Hempstead
Whether it’s one leaking patio door or every frame on the house, you will get a clear quote before work begins. To get one, call 0345 464 0079 or drop us an email with the number of frames and any access details for window mastic in Hempstead. Typical jobs include untidy mastic left by window fitters and gaps where the sill meets the wall, across patio & French doors, aluminium frames and uPVC windows.
In a smaller place like Hempstead, some walls face open ground and catch the full force of the weather. That is hard on the mastic around frames and sills.
All our work is covered by a one-year guarantee, wherever you are in Medway.
- Where
- Hempstead (ME7, ME8)
- Wider area
- Medway
- Cover
- One year on every job
- Quotes
- A clear price before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
How it works
All our tools and materials come with us in the van, so there’s nothing for you to buy. After a quick look at the joints together, the area is protected and the work begins. It normally takes a few hours for a handful of frames, longer for a whole house. A visit to Hempstead is planned like any other: the time, the access and where to park are agreed in advance. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- We start by checking each window and door with you.
- The old mastic is cut out and the surfaces cleaned back.
- Where gaps are deep, backing rod goes in first.
- New exterior sealant goes on in a matching colour and is tooled smooth.
- Finally we tidy up and check each joint.
Preparing for the visit
- Tell us about any water getting in
- Let us know about stairs, lifts or work at height
- For business premises, tell us about site rules or sign-in
Get a quote
We don’t publish a price list, because every job is different. Instead, we give you a clear quote for your job. To arrange one, ring 0345 464 0079 or send us an email.
Read more
DIY sealant or a professional job?
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.
What we are called out for in Hempstead
Joints that are too thin or too deep fail early. 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.
Common reasons people contact us are:
- Cracked internal joints between frame and plaster
- White mastic on grey or black frames
- Gaps where the sill meets the wall
- Untidy mastic left by window fitters
Homes close to All Saints Church include some older properties, and frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Comparing quotes
- Who turns up on the day
- What insurance they hold
- What happens if the job turns out different
- Is the old sealant removed completely?
Common questions in Hempstead
Will you come out to Hempstead?
Yes, we do. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
I let a flat near Rainham (Kent) station. Can you help?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. Just call 0345 464 0079 or drop us an email with the address and what needs doing, and we will give you a clear price.
Can you work on commercial sites?
Yes. Hotels, offices and other businesses use us, and we are fully insured.
Is it worth trying it myself?
It depends on the job. High-level, external movement and fire-rated joints are professional jobs.
Do I need to be at home?
That depends on where the joints are. Inside work needs someone to give us access, while outside work can sometimes be arranged differently.
Can you do several jobs on one visit?
Yes. Tell us about everything you’d like done and you’ll get one quote.
Do you guarantee window mastic?
Yes. Each job is covered for 12 months.
Will the old sealant be removed?
Always. Sealing over the old bead is the commonest cause of early failure, so we never do it.
Why it’s worth doing now in Hempstead
A quick bead over the top of old mastic looks like an easy fix, but it won’t grip old, dirty sealant. It peels before long, and water still gets in behind. The old mastic has to come out. Around Hempstead, water from a failed joint in an older home can soak into timber and plaster, which is far harder to put right than the sealant itself.
The cost depends on the amount of work, how hard the old material is to remove and access to the work. You will have a clear quote before any work starts, so you know where you stand.
Why Hempstead customers choose us
- A 12-month guarantee on all work
- Rated 4.9 stars on Google
- Anti-fungal sanitary silicone in wet areas
- ARBOMaster approved applicator
See what affects the cost and what customers say.
Also in Hempstead
Aftercare tips
No joint lasts for ever, but care makes a real difference. A few tips:
- Keep paint and stain on wooden frames in good order
- Clean frames with a soft cloth and soapy water
- Wipe condensation off the frames
- Clear any debris from frame drain holes
Try not to touch the new joint while it cures, for as long as we advise. Don’t point a pressure washer at the joints.
A failed joint lets water into the wall a little at a time. You might not see it until plaster blows or a damp patch appears inside. Early resealing stops it reaching that point.
Window mastic in Hempstead: local notes
Hempstead is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That’s hard on the mastic around window and door frames, especially on the side facing the sea. Historic houses like Restoration House (about 3.8 miles north-west) are a reminder that the area around Hempstead has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
For site and facilities teams at buildings such as Hempstead Infant School, larger buildings have plenty of frames, and the mastic around each one ages. Letting a property close to Rainham (Kent) station? Then renewing tired window mastic between tenants heads off draught and damp complaints.
Hempstead is about 2 miles south of Gillingham, in Medway. Whether you are in the middle of Hempstead or further out, we cover window mastic for every kind of property. Across Medway, we cover 68 places, and Hempstead is one of them. You can also see our page for Chelmsford, roughly 27 miles from Hempstead.
We cover every part of ME7 and ME8 for window mastic. If you need window mastic at a property on Harrow Road, Spekes Road and Capstone Road or a nearby road, our applicators can take on the job. Hempstead is on the A278, which makes it straightforward to reach with everything needed for window mastic. Neighbouring places we cover for window mastic include Capstone (1 mile north-west), Darland (1 mile north-west), Wigmore (1 mile east), Hale (1 mile north-west) and Park Wood (1 mile east). Within a short drive, we also cover Rochester (4 miles north-west), Strood (5 miles north-west), Hoo St Werburgh (5 miles north), Chatham Waterfront (3 miles north-west), Rochester Riverside (4 miles north-west) and Peters Village (5 miles west).
Near you in Hempstead
We work in homes and buildings around Rainham School for Girls, Howard School and South Wood, among other places. For rail, the closest station is Rainham (Kent) station, roughly 2.1 miles north-east. Well-known places in the area include Pentagon Shopping Centre (3 miles north-west) and Medway megaliths (3.8 miles south-west). For a walk, there’s Burham Down and Boxley Hills.
For landlords and businesses
For anyone letting property in or around Hempstead, several properties can be quoted together. Send us the addresses and the work at each.
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. We can quote for more than one property at once.