Kent · England
Window & door mastic in Broomfield, Kent
Window mastic in Broomfield from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Gaps where the sill meets the wall
- White mastic on grey or black frames
- Rushed sealant from a window installation
DIY versus a professional finish
A DIY attempt does not rule out a professional job. We cut it out and start again, so just mention it when you contact us.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
Window mastic in Broomfield
From a single sill to a whole house of windows, the work is priced before anything is done. Just ring 0345 464 0079 or send us an email and tell us how many frames there are and how they’re reached. We’re often asked to deal with cracked or shrunken mastic around the frame and old mastic that has gone black or come away, across timber windows & doors, patio & French doors and window sills.
Somewhere as small as Broomfield, older homes often have timber frames set in stone or brickwork. Older buildings like these do not always suit modern silicone, and sometimes a traditional sand mastic is the better choice.
Big or small, you get the same 12-month guarantee in Broomfield and across Kent.
- Where
- Broomfield (ME17)
- Wider area
- Kent
- Guarantee
- One year on every job
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
What affects the cost of window mastic
The price is agreed before any work begins. It’s based on:
- Working hours on commercial sites
- The number and length of the joints
- How much old sealant there is and how hard it is to remove
- Which sealant suits the joint
What it costs depends on how much there is to do, how hard the old material is to remove and access to the work. You’ll have a clear quote before any work starts.
What we need to know
To help us quote quickly, let us know:
- If someone has resealed it before
- Photos by email, if that is easy
- What the problem is, such as mould, gaps, leaks or cracking
- If it’s domestic, commercial or a hotel
Asking for a quote is easy: let us know what needs doing and where and its rough size. A few photos by email make the job easier to understand.
More services for Broomfield
Windows and doors in Broomfield
Historic houses like Leeds Castle (about 0.4 miles north-west) are a reminder that the area around Broomfield has older buildings as well as new. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic. 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.
Homes close to Church of St Margaret include some older properties, and the joint between an old wall and a newer frame is usually the first place rain gets in. Managing a site like Leeds and Broomfield Church of England Primary School? Then the mastic around its windows and doors needs looking after like any other building’s.
Broomfield is about 5 miles east of Maidstone, in Kent. Homes, rented property, offices and hotels in Broomfield can book us for window mastic, old or new, large or small. The work is guaranteed for a year. Broomfield is one of 922 towns and villages in Kent we cover. Our Chelmsford page covers work nearby (35 miles or so).
All of ME17 is covered for window mastic. Close by, we work in Chegworth (1 mile east), Ashbank (1 mile north-west), Kingswood (1 mile south), Eyhorne Street (1 mile north) and Leeds (1 mile west). Within a short drive, we also cover Maidstone (5 miles west), Ashford (12 miles south-east), Sittingbourne (8 miles north-east), Faversham (12 miles north-east), Minster (14 miles north-east) and Kings Hill (10 miles west).
Around Broomfield
Typical jobs here are in homes near The Park Gate Inn and the streets around them. The closest station to Broomfield is Hollingbourne station, roughly 1.6 miles north. Other landmarks nearby include Leeds Castle (under half a mile north-west) and KIMS hospital (4.5 miles north-west). For a walk, there’s Detling Hill.
Aftercare tips
No joint lasts for ever, but care makes a real difference. Our tips:
- Wipe condensation off the frames
- Do not paint over the silicone
- Avoid harsh chemicals near the mastic
- Don’t aim a pressure washer at the joints
Timber frames need their paint kept up, because bare, wet timber moves more and pulls at the joint. Paint up to the joint, not over the silicone.
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.
Why deal with it now?
Getting a straight, even bead on an outside frame takes practice, especially upstairs. A professional job is cut out properly, backed where needed and finished neatly, using a product chosen for the frame and wall. Older cottages and farmhouses around Broomfield can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Doing several joints on one visit generally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. You’ll get one clear quote for the whole job.
Why us?
- Every job guaranteed for a year
- A sealant colour to suit the surroundings
- We agree the colour with you first
- Domestic, commercial and hotel work
See our cost guide or our reviews.
Common questions in Broomfield
Can you help a landlord with a rental near Hollingbourne station?
Yes. We work for letting agents and landlords as well as householders, and several properties can go on one quote. You can phone 0345 464 0079 or drop us an email with the details for a clear quote.
Is Broomfield within the area you cover?
Yes, we do. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Is there any odour?
That depends on the sealant. Some smell for a while, some hardly at all, and any smell fades as they cure.
Are you fully insured?
Yes. We are fully insured.
Can you do several jobs on one visit?
Yes, we can. Several rooms, windows or areas can go on one quote.
What does window mastic cost?
There’s no set price, as it depends on the job: its size, the old material, access and the product needed. You’ll get a clear quote before work begins.
Do I have to be there?
If the work is inside, we need someone to let us in. Once we have agreed the job, you don’t need to watch us work.
Where are you based?
We work from Crawley. We cover Broomfield and the rest of Kent.
Surface by surface
Aluminium frames
Coated aluminium needs a compatible sealant. We use a neutral-cure product.
Patio & French doors
Heavy door frames can move more than windows. A flexible sealant copes with that.
How it works
The work is kept neat and contained to the area we’re working on, so you can carry on as normal. The job usually takes most of a day for a typical house, less for a few frames, and we tell you how long to leave it before we go. For a village or hamlet like Broomfield, the journey is planned in advance: 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 confirm safe access to each frame.
- All the failed sealant is cut away, 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.
- The joint is shaped to shed water and the area tidied.
Getting ready for the visit
- On commercial sites, let us know about site rules
- Tell us about access, such as stairs, a lift or high-level joints
- Mention any leaks or damp you’ve noticed
Ask for a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and email pictures if that is easy.
Read more
Signs you need window mastic in Broomfield
Joints that are too thin or too deep fail early. A skim of sealant over a wide gap soon tears, while a joint packed solid can’t stretch. That is what backing rod is for.
These are the problems we are asked about most:
- Leaking joints at the ends of sills
- Black, perished sealant on frames
- Hard, cracked sealant around windows
- Rain getting in at the frame or under the sill
Letting a property close to Hollingbourne station? Then 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
- Are they insured?
- Who turns up on the day
- Whether VAT is included
- When the joint can take water or movement