Kent · England
Window Mastic in Hook Green
Mastic around window and door frames, sills and patio doors in Hook Green, with a 12-month guarantee on every job. Ask us for a quote.
- Water coming in at the bottom corners of a door
- Gaps between the frame and the inside reveal
- Cold air getting in at the frame edge
How we quote for window mastic
Some jobs are bigger than they look, and some smaller. What affects the quote:
- Any mould that needs treating
- How many areas need sealing
- Whether the work is at height
- The number and length of the joints
Every job is a little different, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all play a part.
What we need to know
Before you ask for a quote, have a think about:
- What the problem is, such as mould, gaps, leaks or cracking
- Any access issues, like height or stairs
- Any previous sealing or DIY work
- The rough size of the job
Getting a quote is simple: tell us what needs doing and where, and roughly how big it is. Photos by email help us understand the job, and we’ll come back to you with a quote.
Window mastic for homes and businesses in Hook Green
A cold draught around a closed window often comes from the frame edge. Resealing that joint can make a room feel noticeably less draughty and quietens the whistle on windy days. If the draught is through the window seals instead, we’ll tell you. We work on aluminium frames, patio & French doors and window sills, and the jobs we see most are black, perished sealant on frames and hard, cracked sealant around windows.
Mastic can only go onto a dry, clean joint, so window work in Hook Green is booked around the forecast. Tell us about access to every side of the house, including upper-floor windows.
A one-year guarantee comes as standard, so you’re not left on your own once the job is done.
- Place
- Hook Green (DA13)
- Region
- Kent
- Cover
- A year, on every job
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Can I do it myself?
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and getting the depth right matters as much as the look.
Places near Hook Green
Other services in Hook Green
What happens if it’s left?
Resealing frames is a short job: the visit takes anything from an hour or two to a full day, depending on how many frames there are. Wait for damp to appear and there may be plaster and decorating to sort out too. Around Hook Green, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
Rather than a set price list, we price the job in front of us: how many joints, what’s in them now and how we reach them. You’ll know the price before we begin.
Why book with us
- Fully insured
- We agree the colour with you first
- 4.9 on Google from 180+ five-star reviews
- A choice of colours where the product allows
Take a look at how sealant jobs are priced or customer reviews.
Keeping the joints in good condition
No joint lasts for ever, but care makes a real difference. A few tips:
- Wash the frames with mild soapy water
- Repaint timber before it’s bare
- Clear any debris from frame drain holes
- Don’t paint over the silicone
Keep the new mastic undisturbed while it cures, for as long as we advise. Do not 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.
How it works
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. For most jobs that takes a morning for a couple of windows and a door and we leave things clean and tidy. Somewhere as small as Hook Green, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- First, we confirm safe access to each frame.
- Old, cracked mastic is removed completely.
- 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.
Preparing for the visit
- Clear items away from the joints we’re working on
- Let us know if you’ve seen damp or leaks
- Try not to wet indoor joints just before the visit
Get a quote
Want a quote for window mastic? Please phone 0345 464 0079 or email us with a few details. We will explain what we’d do and give you a clear quote before any work starts.
Advice
Window mastic in Hook Green: local notes
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. With historic houses such as Cobham College (about 3.9 miles south-east) nearby, there’s older building stock in the area around Hook Green as well as newer homes. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
Managing a site like Sedley's Church of England Voluntary Aided Primary School? Then its window and door frames need their mastic kept sound, just like a home’s. If you live in an older home near Church of St Nicholas, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. Rented homes near Longfield station change hands often, and sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Hook Green is about 2 miles south-west of Northfleet, in Kent. Every kind of property in Hook Green can book us for window mastic, old or new, large or small. Every job comes with our one-year guarantee. Our area takes in 922 places across Kent, from the larger towns to small villages. For nearby work, see our London page.
Work in DA13 is quoted and booked the same way as anywhere else. Window mastic is available to properties on Fred Mead, Barker Fields and Lambert Mews and the roads around them. Other places close to Hook Green include Southfleet (1 mile north-east), Betsham (1 mile north-west), Northfleet Green (1 mile east), Painters Ash (1 mile north-east) and Springhead (1 mile north). Within a short drive, we also cover Maidstone (14 miles south-east), Dartford (5 miles north-west), Sevenoaks (11 miles south-west), Gravesend (3 miles north-east), Tonbridge (15 miles south) and Swanley (6 miles west).
Local landmarks in Hook Green
Typical jobs here are in homes near Longfield Chalk Bank, Black Lion pub and Longfield Academy, among other places. The nearest railway station is Longfield station, about 1.2 miles south-west of the centre. Other landmarks nearby include Bluewater (2.8 miles north-west) and Darent Valley Hospital (3 miles north-west). Not far away are Sawyers Lake.
Landlords, agents and businesses in Hook Green
Housing providers, facilities teams and property managers book us too in Hook Green and across Kent. Several sites can go on one quote, and we’re fully insured for the work.
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. Several properties can be quoted together.
Different surfaces, different methods
Composite doors
An exposed front door gets wind-driven rain. We pay most attention there.
Window sills
Stone and concrete sills have their own joints, and the joint under the frame can let rain run behind. Those are sealed with a product suited to stone or concrete.
FAQs for Hook Green
Do you cover Hook Green for window mastic?
Yes, Hook Green is within the area we cover. Our work covers London and the South East. Just call 0345 464 0079 or email us with a few details of the job, and we will give you a clear price.
I let a flat near Longfield station. Can you help?
Yes, rental work is part of what we do. Just phone 0345 464 0079 or email us and tell us about the property, and we’ll give you a clear price.
Will resealing my frames help with draughts?
Yes, where the draught is at the frame edge. We find where the air is coming from before we reseal.
Can new window sealant be painted?
It depends on the sealant. Some hybrid sealants can be painted; silicone can’t. Mention any painting plans before any work starts.
Is there any odour?
Sometimes, a little. Any smell clears as the sealant cures, and ventilation helps.
Will you leave a mess?
Tidy work is part of the job. Nearby surfaces are protected, and we clear up when we are done.
Can new sealant go over the old?
No, and we never do. It can look neat for a few weeks, but the new bead soon lifts. The old sealant has to come out completely.
Can you match the sealant to my frames?
Yes. Anthracite grey, black, brown and white cover most frames, with clear as an option.