Medway · England
Window & door mastic in North Street, Medway
Window and door frames in North Street need attention? We cut out the old, prepare the joints and apply the right sealant, with a one-year guarantee.
- Old mastic that has gone black or come away
- Cracked internal joints between frame and plaster
- Cold air getting in at the frame edge
How we handle window mastic in North Street
Around North Street we seal all kinds of frames: uPVC, aluminium, timber and composite, along with patio doors, French doors and sills. The sealant is chosen to suit the frame material and the wall. Typical jobs include whistling draughts around closed windows and sealant in the wrong colour for the frame, on patio & French doors, composite doors and uPVC windows.
Mastic can only go onto a dry, clean joint, so window work in North Street is booked around the forecast. Tell us about access to every side of the house, including upper-floor windows.
You get a 12-month guarantee, the same in North Street as everywhere else we work.
- Place
- North Street (ME3)
- Wider area
- Medway
- Guarantee
- One year on every job
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Work for landlords, hotels and businesses
Mouldy or split sealant often shows up at the end of a tenancy. Several properties can go on one quote.
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
Window mastic in North Street: local notes
North Street is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That is hard on the mastic around window and door frames, especially on the side facing the sea. Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
In the older streets around Church of St Peter and St Paul, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
North Street is about 5 miles north of Gillingham, in Medway. North Street gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Our Medway coverage runs to 68 places, and North Street is one of them. There’s also a page for Chelmsford, about 21 miles away.
Postcode districts we cover here for window mastic: ME3. We also cover the places around North Street: Tunbridge Hill (1 mile south-west), Kingsnorth (1 mile south), Stoke (1 mile north-east), Fenn Street (1 mile north-west) and Sharnal Street (1 mile west). Further out, we also cover Gillingham (5 miles south), Chatham (7 miles south-west), Rochester (6 miles south-west), Rainham (5 miles south), Strood (6 miles south-west) and Luton (6 miles south-west).
Near you in North Street
Around North Street, our work takes us to homes and buildings near The White Horse pub and the streets around them. The closest station to North Street is Gillingham (Kent) station, about 4.2 miles south-west. Nearby you will also find Medway Maritime Hospital (4.9 miles south-west) and Upnor Castle (4 miles south-west). For a walk, there’s Bishop Saltings.
Why deal with it now?
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. Leave it until water is coming in and you may need plastering and decorating as well. In a small place like North Street, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
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. The price is agreed before we begin.
Why us?
- White, clear, grey or coloured to suit, where the product allows
- Anti-fungal sanitary silicone in wet areas
- Approved under the ARBOMaster scheme
- Colour agreed with you before any work starts
Can I do it myself?
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
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.
Places near North Street
Also in North Street
What we can’t put right
A few problems are outside what sealant work can do:
- Damp coming through the wall itself rather than the frame joint
- Worn gaskets, brush seals or a door that has dropped
- Condensation trapped between the panes
If you are not sure, just call 0345 464 0079 or email us and we’ll give you a straight answer before you book.
Surfaces we seal
- Composite doors
- Timber windows & doors
- Window sills
- uPVC windows
- Aluminium frames
- Patio & French doors
What happens on the day
There is not much for you to do on the day. Point us to the joints and we will get on with it. The work itself takes a few hours for a handful of frames, longer for a whole house, including the tidy-up. Somewhere as small as North Street, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- We check each frame and agree which ones need doing.
- We remove the old mastic and clean the frame and the wall.
- Where gaps are deep, backing rod goes in first.
- We apply a weatherproof sealant to match the frame and tool it neatly.
- Finally we tidy up and check each joint.
How to prepare
- Move anything stored near the joints
- Where the joints are inside, avoid wetting them before we arrive
- Keep pets and children clear of the area while we work
Ask for a quote
We quote each job on its own, so start by telling us what you need. Simply ring 0345 464 0079 or email us and describe the job.
Related advice
How to look after the new joints
No joint lasts for ever, but care makes a real difference. Our tips:
- Air rooms to keep condensation down around windows
- Paint up to the joint, not over it
- Wash the frames with mild soapy water
- Avoid harsh chemicals near the mastic
Keep the new mastic undisturbed while it cures, for as long as we advise. Don’t point a pressure washer at the joints.
Leaks generally show up in wet, windy weather, but sealant goes on best when frames and walls are dry. Sorting cracked mastic early means the joint is sound before the bad weather.
Your questions about window mastic in North Street
I let a flat near Gillingham (Kent) station. Can you help?
Yes, landlords and agents are among the people we work for. You can phone 0345 464 0079 or send us an email with the details for a clear quote.
Will you come out to North Street?
Yes, we do. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Will the old sealant be removed?
Yes. All of the old material is cut out and the joint cleaned.
Which products do you use?
Each joint gets the product that suits it. Where it moves, gets wet or faces the weather makes a difference, and we’ll tell you what we’re using.
Where are you based?
Our base is in Crawley, and we work across South East England, London and Scotland.
What should I tell you?
The location, the problem and the rough size of the job. If you can, email a few photos.
Will you leave a mess?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.
How long should I leave it?
Many sealants skin over quickly but take longer to cure fully. We’ll tell you how long to leave the joint before we leave.
When to call us in North Street
Older frames were often sealed with products that set hard. Once it’s rigid, every bit of frame movement pulls at it, leaving a hairline gap down one side.
Look out for any of the following:
- Mastic that has split away from the wall
- Cracked internal joints between frame and plaster
- Sealant in the wrong colour for the frame
- Gaps where the sill meets the wall
If you let a flat or house near Gillingham (Kent) station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
What to look for in a quote
- What the quote includes, VAT included or not
- What guarantee comes with the work
- Whether you can choose the colour
- What insurance they hold