Kent · England
Window Mastic in Hockenden
Window and door frames in Hockenden need attention? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- A bead that doesn’t match the frame
- Old mastic that has gone black or come away
- Whistling draughts around closed windows
Window mastic in Hockenden, done properly
Every window and door frame has a gap around it, and mastic is what closes it. When it cracks, hardens or pulls away, draughts and rain get in. The old mastic is removed and the joint resealed with a flexible exterior sealant. If you are dealing with cracked internal joints between frame and plaster and cracked sealant at the sill ends, we can help.
Somewhere as small as Hockenden, older homes often have timber frames set in stone or brickwork. Not every older frame suits a modern silicone bead, so the sealant has to be chosen to suit the building.
There’s a 12-month guarantee on every job, large or small.
- Location
- Hockenden (BR8)
- Wider area
- Kent
- Cover
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Should I try it myself first?
If you’ve already had a go yourself, that’s fine. We remove it and do the joint properly, so tell us about it when you ask for a quote.
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.
Looking after it afterwards
Joint life depends on how it’s used and looked after. We suggest:
- Clean frames with a soft cloth and soapy water
- Walk round the house once a year and look at the joints
- Do not aim a pressure washer at the joints
- Keep solvents and bleach off the sealant
Clean the frames with mild soapy water, and keep solvents and harsh chemicals off the joint.
A small gap around a frame only grows. As the old mastic shrinks further, more air gets through, and a cold room gets colder. A new joint closes it up.
Common questions in Hockenden
Is Hockenden in your area for window mastic?
Yes, Hockenden is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or send us an email with a few details of the job.
Will you come out to Hockenden?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Can new window sealant be painted?
That depends on the product. Silicone is not paintable, but some hybrid sealants are. Mention any painting plans before work begins.
Can you do the inside joint as well?
Yes. Draughts often come through the inside gap too, so it can be worth sealing both.
What do you need from me for a quote?
Only a few details: where it is, what you’ve noticed and how we reach it. After that, simply phone 0345 464 0079 or email us.
Are you insured?
Yes. Mr Mastic is fully insured, with over 20 years’ experience in sealant work.
Is it messy?
Tidy work is part of the job. Nearby surfaces are protected, and we clear up when we are done.
Do you hold any approvals?
Yes. Mr Mastic is an ARBOMaster approved applicator, and we are fully insured.
Work for landlords, hotels and businesses
Whether it’s one flat or a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
Hotels need rooms back in use, so the work can be planned room by room. Hotel work is part of what we do, alongside homes and businesses.
Quotes for window mastic in Hockenden
Jobs vary more than people expect. What affects the quote:
- The old material and how stubborn it is
- How easy the joints are to reach
- The amount of work
- Any mould that needs treating
The cost reflects the work involved, not a rough estimate. That is why we ask about the job first and agree the price before starting.
What we need to know
To help us quote quickly, let us know:
- Any previous sealing or DIY work
- Photos by email, if that’s easy
- What the problem is, such as mould, gaps, leaks or cracking
- Roughly how big the job is
If you’re in Hockenden and need window mastic, ring 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and you’ll get a clear quote before any work starts.
What we cannot put right
In fairness, some problems need a different trade:
- Worn gaskets, brush seals or a door that has dropped
- A failed sealed unit that has misted up
- Penetrating damp from a failed cavity tray or render
If in doubt, ring 0345 464 0079 or send us an email and we will say what we think.
Joints and surfaces we work on
- Aluminium frames
- Timber windows & doors
- Window sills
- Patio & French doors
- Composite doors
- uPVC windows
The process
Good joint work is mostly preparation, and we do not rush it. Joints are cleaned back and dried before anything new goes in. All told, the work takes a few hours for a handful of frames, longer for a whole house. Somewhere like Hockenden needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- First we look at every frame and agree the list.
- Next the failed sealant is cut away and the joint cleaned.
- We fit backing rod in deep gaps so the sealant is the right depth.
- A flexible, weatherproof sealant is applied in a colour to suit the frame.
- We clear up and check every joint is fully closed.
Preparing for the visit
- Mention any tricky access
- Keep pets and children clear of the area while we work
- For indoor joints, keep the area dry beforehand if you can
Get a quote
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is, and add pictures by email if you can.
Related advice
What the job involves on each surface
Window sills
Sills catch the water running down the glass, so the sill ends and the joint under the frame are vital. Each is cleaned out and resealed.
Patio & French doors
Patio and French doors have the longest joints on most houses. The threshold and the bottom corners take the most water, so they get particular care.
Window mastic in Hockenden: local notes
Historic houses like Hall Place and Gardens (about 3.2 miles north) are a reminder that the area around Hockenden 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. Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Letting a property close to Swanley station? Then sound mastic around windows and doors keeps out the draughts and damp that tenants notice first. Schools such as Horizon Primary Academy are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages. For an older house near a landmark such as St Mary the Virgin, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Hockenden is about 2 miles north-east of Orpington, in Kent. Whether you are in the middle of Hockenden or further out, window mastic is available for homes and businesses alike. Across Kent, we cover 922 places, and Hockenden is one of them. For nearby work, see our London page (13 miles or so).
All of BR8 is covered for window mastic. Neighbouring places we cover for window mastic include Upper Ruxley (1 mile north-west), Stonehill Green (1 mile north-east), Ruxley (1 mile north-west), Puddledock (2 miles north-east) and Hextable (2 miles north-east). We also work in nearby towns such as Dartford (4 miles north-east), Sevenoaks (8 miles south), Gravesend (10 miles east), Tonbridge (15 miles south), Northfleet (9 miles east) and Kings Hill (14 miles south-east).
Landmarks near Hockenden
Around Hockenden, our work takes us to homes and buildings near Orchards Academy and Foots Cray Meadows. For rail, the closest station is Swanley station, roughly 1 mile south-east of the centre. A little further out are London Borough of Bromley Museum (2.6 miles south-west) and Eynsford Castle (3.4 miles south-east). Open spaces near Hockenden include The Warren and Summer Hill.