Kent · England
Window Mastic in High Brooms
Problem with your window and door frames in High Brooms? We remove the old material, prepare the joints and seal them properly, with a 12-month guarantee.
- Water coming in at the bottom corners of a door
- Cracked sealant at the sill ends
- Gaps left after new windows were fitted
What the job involves on each surface
Aluminium frames
Aluminium needs a sealant that bonds to coated metal and we avoid acetoxy silicones, which can react with some metals. Neutral-cure sealant is the safe choice.
Patio & French doors
Patio and French doors have the longest joints on most houses. Most leaks start at the bottom corners, so they get particular care.
How we handle window mastic in High Brooms
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. Our applicators cut it out and replace it with a flexible, weatherproof sealant. Typical jobs include cracked internal joints between frame and plaster and sealant in the wrong colour for the frame, across uPVC windows, timber windows & doors and window sills.
Around High Brooms, conservatories, garden rooms and patio doors are often part of the house. Their glazing joints and frame seals are as much a part of the job as the windows, and any older timber or sash windows need a sealant that suits them.
All our work is covered by a 12-month guarantee.
- Where
- High Brooms (TN2, TN4, TN1)
- Region
- Kent
- Cover
- 12 months on all our work
- Quotes
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
What we do, step by step
When we get to you, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. Most jobs then take most of a day for a typical house, less for a few frames. In a smaller place like High Brooms, parking is seldom the issue; lanes, gates and long drives are worth mentioning. For outside work, side access and the height of the joints help us plan.
- First, we confirm safe access to each frame.
- All the failed sealant is cut away.
- 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.
Before we arrive
- Move anything stored near the joints
- Tell us about access, such as stairs, a lift or high-level joints
- On commercial sites, let us know about site rules
Ask for a quote
For a quote, phone 0345 464 0079 or email us with the location and a short description of the problem. We will send you a clear quote before any work starts.
Read more
How to look after the new joints
Aftercare is simple, and it makes a real difference:
- Ventilate rooms so frames do not stay wet inside
- Look round the frames every year or so
- Make sure the drainage slots aren’t blocked
- Do not aim a pressure washer at the joints
Check the drainage slots in the frames are not blocked, so rain drains out rather than building up at the sealant.
Signs to watch for: split or missing mastic, gaps, damp patches inside or black mould on the reveal. Any of these is worth a call.
For landlords and businesses
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance that we can handle for you.
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements.
Also near High Brooms
Other services in High Brooms
What window mastic looks like in High Brooms
London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. With historic houses such as Groombridge Place (about 4.4 miles south-west) nearby, there’s older building stock in the area around High Brooms as well as newer homes. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.
In the older streets around St Matthew's Church, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. For landlords with property near High Brooms station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets. Schools such as St John's Church of England Primary School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.
High Brooms is about 1 mile north-east of Royal Tunbridge Wells, in Kent. From the centre of High Brooms to the outskirts, window mastic is available for homes and businesses alike. 922 places in Kent are on our list. Our Crawley page covers work nearby, about 20 miles away.
Here we cover the TN2, TN4 and TN1 postcode area for window mastic. Streets in the area include Oak Road, Brook Road and Caley Road. If you’re just outside High Brooms, we cover Southborough (1 mile north-west), Royal Tunbridge Wells (1 mile south-west), Hawkenbury (2 miles south), Stockland Green (2 miles west) and Bidborough (2 miles north-west). Larger places within reach include Maidstone (14 miles north-east), Sevenoaks (10 miles north-west), Tonbridge (3 miles north), Kings Hill (10 miles north-east), Foley Park (14 miles north-east) and Paddock Wood (5 miles east).
Near you in High Brooms
Around High Brooms, our work takes us to homes and buildings near St Gregory's Catholic School, Hilbert Woods and Longbow Court pub, among other places. There’s a railway station in High Brooms itself: High Brooms station. Nearby you will also find Kent and Sussex Hospital (1.2 miles south-west) and Tunbridge Wells Museum and Art Gallery (1.2 miles south-west). Green spaces nearby include Tudeley Woods RSPB reserve and Barden Lake.
Common questions in High Brooms
Do you cover smaller places like High Brooms?
Yes, smaller places are covered as well as towns. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Can you do window mastic in High Brooms?
Yes, High Brooms is within the area we cover. Our work covers London and the South East. Just call 0345 464 0079 or drop us an email with a few details of the job.
Is it worth trying it myself?
That depends on the joint. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
Where do you work from?
Mr Mastic is based in Crawley. Our applicators cover High Brooms.
Can you seal the gap between the frame and the plaster indoors?
Yes. Plenty of draughts come through the inside joint as well as the outside, so sealing both is often worthwhile.
Do you have insurance?
Yes. We’re fully insured.
Can you reach windows above the ground floor?
Yes, if safe access is possible. For high or awkward windows, we’ll tell you what access is needed.
How long does it take to reseal the windows on a house?
The work takes a morning for a couple of windows and a door. Access and how stubborn the old mastic is affect the time most.
Should I try it myself first?
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. All the old material has to come out first.
Why it’s worth doing now in High Brooms
Once mastic fails, rain can get between the frame and the wall. Left long enough, it can stain inside walls, spoil plaster and rot wooden frames. Resealing now is a small job by comparison. Around High Brooms, 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.
What you pay reflects the work, not guesswork. That is why we ask about the job first.
Why choose Mr Mastic in High Brooms
- 4.9 on Google from 180+ five-star reviews
- More than 20 years in sealant work
- Neat joints and a tidy finish
- A sealant colour to suit the surroundings
Read how sealant jobs are priced and our reviews.
Quotes for window mastic in High Brooms
For a quick quote, just ask. The main things that affect it are:
- Working hours on commercial sites
- How easy the joints are to reach
- How many rooms, windows or areas are involved
- The number and length of the joints
The cost depends on the amount of work, how much old material has to come out and access to the work. You’ll have a clear quote before any work starts, so you know where you stand.
Helping us quote
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- Where the property is
- Access, such as stairs, a lift or height
- Photos by email, if that is easy
- The rough size of the job
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 photos by email if you can.