Kent · England
Window & door mastic in Newbury, Kent
Window mastic across Newbury and nearby, with old sealant always removed completely and a one-year guarantee.
- Hard, cracked sealant around windows
- Gaps where the sill meets the wall
- Water coming in at the bottom corners of a door
What we’re called out for in Newbury
Older frames were often sealed with products that set hard. Once it has hardened, the frame’s movement tears it from the wall, and a gap opens along one edge.
Common reasons people contact us are:
- Untidy mastic left by window fitters
- Cracked or shrunken mastic around the frame
- Damp patches on the reveal after heavy rain
- Draughty joints inside around the window
In the older streets around Church of St Catherine, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Comparing quotes
- How the surfaces are prepared before sealing
- The length of the guarantee
- What insurance they hold
- Who turns up on the day
How we handle window mastic in Newbury
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. Where the air is getting in through the window itself, we will say so. If you’re dealing with white mastic on grey or black frames and draughty joints inside around the window, we can help, on composite doors, aluminium frames and patio & French doors alike.
Around Newbury, many homes face open ground, so their windows and doors take the full weather. That exposure dries out and cracks the mastic around frames and sills faster.
The work is covered for a year after we finish. If anything is not right with it, ring 0345 464 0079 or drop us an email.
- Location
- Newbury (ME9)
- Region
- Kent
- Guarantee
- A year, on every job
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
How we quote for window mastic
We don’t publish a price list, because jobs vary so much. The quote depends on:
- Which sealant suits the joint
- Mould in or behind the old joints
- The old material and how stubborn it is
- How easy the joints are to reach
Doing several joints on one visit is normally more efficient than separate visits. We will send you a clear quote for the lot.
What to tell us for a quote
To help us quote quickly, please include:
- The type of property
- Any access issues, like height or stairs
- A few photos by email, if you can
- The rough size of the job
Need a quote? Please ring 0345 464 0079 or send us an email with a few details. We will explain what we’d do and give you a clear quote before work begins.
Leave it or put it right?
A quick bead over the top of old mastic looks like an easy fix, but it will not grip old, dirty sealant. It peels before long, and water still gets in behind. The old mastic has to come out. In a small place like Newbury, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs, along with when we can work on site. Call for a quick quote and we’ll go through it with you.
Why us?
- White, clear, grey or coloured to suit, where the product allows
- Every job guaranteed for a year
- 20+ years of sealant experience
- An ARBOMaster approved applicator
Take a look at what affects the cost and our reviews.
What we do, step by step
Before we leave, we go over the finished joints with you and tell you how long to leave it. The visit itself generally takes anything from an hour or two to a full day, depending on how many frames there are, depending on the size of the job. In a small place like Newbury, access is generally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- First, we go round the frames with you and agree the list.
- The old mastic is cut out and scraped back to clean surfaces.
- Where the gap is deep, backing rod goes in first.
- A flexible exterior sealant is applied in a colour to suit the frame.
- We tool each bead neatly and check every joint is closed.
Before we arrive
- Tell us about any previous sealing or DIY attempts
- Keep pets and children clear of the area while we work
- Where the joints are inside, avoid wetting them before we arrive
Ask for a quote
For a quote, call 0345 464 0079 or email us with the location and a short description of the problem. We’ll give you a clear quote before any work starts.
Related advice
What the job involves on each surface
Window sills
Stone and concrete sills have their own joints, including the one between the sill and the frame above. Those are sealed with a product suited to stone or concrete.
Patio & French doors
The joints around patio doors run a long way, top, sides and threshold. The threshold and the bottom corners take the most water, so we pay close attention there.
Other services in Newbury
Newbury homes and the weather
Historic houses like Belmont House and Gardens (about 4.3 miles south-east) are a reminder that the area around Newbury has older buildings as well as new. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic. Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Schools such as Rodmersham School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s. If you let a flat or house near Teynham station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Newbury is about 3 miles south-east of Sittingbourne, in Kent. We provide window mastic to homeowners, landlords and businesses in Newbury, as part of our work across Kent. Newbury is one of 922 towns and villages in Kent where we work. Our Chelmsford page covers work nearby (32 miles or so).
Jobs for window mastic in ME9 is quoted and booked the same way as anywhere else. If you are just outside Newbury, we cover Kingsdown (1 mile south), Dungate (1 mile south-west), Bapchild (1 mile north), Erriottwood (1 mile south-east) and Rodmersham Green (1 mile north-west). We also work in nearby towns such as Maidstone (11 miles west), Ashford (12 miles south), Canterbury (14 miles east), Sittingbourne (3 miles north-west), Whitstable (12 miles east) and Faversham (5 miles east).
Near you in Newbury
In Newbury, that means homes and buildings near Cromers Wood and The Sittingbourne School and the streets around them. Newbury’s nearest station is Teynham station, roughly 2.7 miles north-east. Well-known places in the area include Sittingbourne Heritage Museum (2.4 miles north) and Newnham Castle (2.1 miles south-east).
Keeping the joints in good condition
Good habits help new joints last longer. A few tips:
- Keep drainage slots and sill grooves clear
- Avoid harsh chemicals near the mastic
- Look round the frames every year or so
- Paint up to the joint, not over it
Have a look at the joints once a year, ideally after winter. Small splits are simple to catch before they leak, and if anything looks wrong, just call 0345 464 0079 or email us.
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.
FAQs for Newbury
Will you come out to Newbury?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Do you cover Newbury for window mastic?
Yes. Our work covers London and the South East, and Newbury is part of that. You can ring 0345 464 0079 or send us an email and let us know what needs doing.
Is it messy?
No. The area is protected while we work and cleaned up afterwards.
What sealant do you use?
The product depends on the job: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. Brands we use include Arbo and Everbuild.
Should I try DIY first?
Some simple jobs can be done by a careful DIYer. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
Can you reach windows above the ground floor?
Yes, where it’s safe. For high or awkward windows, we will tell you what access is needed.
Can you get sealant to suit coloured frames?
Yes, we choose a colour to suit the frame. Grey and black frames get grey or black sealant, and wood-effect frames normally suit brown.
How do I get a quote for window mastic in Newbury?
It depends on the job, so we quote each one individually. To get one, phone 0345 464 0079 or drop us an email with a short description of the job.
For landlords and businesses
Mouldy or split sealant often shows up at the end of a tenancy. Several properties can be quoted together.
From a single let to a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a 12-month guarantee.