Kent · England
Window Mastic in Yopps Green
Window mastic for Yopps Green, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Cold air getting in at the frame edge
- Hard, cracked sealant around windows
- Rushed sealant from a window installation
Window mastic in Yopps Green
Frames and walls don’t move together. Plastic and aluminium frames move with the temperature, while masonry stays fairly still. That’s why the joint needs a flexible, low-modulus sealant rather than something rigid. If you are dealing with draughts coming in around windows and doors and white mastic on grey or black frames, we can help, on timber windows & doors, uPVC windows and aluminium frames alike.
Outdoor sealant needs dry, clean surfaces, so work on frames around Yopps Green is planned for dry weather. Tell us about access to every side of the house, including upper-floor windows.
Big or small, it’s backed by our 12-month guarantee in Yopps Green and across Kent.
- Where
- Yopps Green (TN15)
- Region
- Kent
- Cover
- One year on every job
- Price
- A clear price before we start
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Should I try it myself first?
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
The biggest DIY mistake is sealing over old sealant. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
What we are called out for in Yopps Green
Every frame moves through the day. Sun on a frame makes it expand, and it contracts again overnight, while the brick or render around it hardly moves. A sealant that can’t keep up eventually tears.
Look out for any of the following:
- Cold air getting in at the frame edge
- A bead that does not match the frame
- Hard, cracked sealant around windows
- Damp patches on the reveal after heavy rain
For site and facilities teams at buildings such as Plaxtol Primary School, its window and door frames need their mastic kept sound, just like a home’s.
Before you book anyone
- How the colour is chosen
- How long the guarantee is
- Whether they’re fully insured
- Whether all the old sealant comes out first
What affects the cost of window mastic
The price is agreed before any work begins. It takes into account:
- The product the joint needs
- How many areas need sealing
- When we can work, for business premises
- Access and height
Instead of a standard rate, we price the job in front of us: the amount of work, the old material and the access. The price is agreed before we begin.
What to tell us for a quote
To make quoting easier, let us know:
- Roughly how big the job is
- Access, such as stairs, a lift or height
- If it’s domestic, commercial or a hotel
- The address or postcode of the job
For a quote, call 0345 464 0079 or drop us an email and tell us where the job is and what the problem looks like. We will give you a clear quote before any work starts.
When something else is needed
To be straight with you, some problems need a different trade:
- Soft or decayed wood in the frame
- Draughts through the window seals rather than the frame
- Faulty window hardware
If you’re not sure, just call 0345 464 0079 or email us and we will give you a straight answer.
Surfaces we seal
- uPVC windows
- Aluminium frames
- Timber windows & doors
- Composite doors
- Window sills
- Patio & French doors
Yopps Green homes and the weather
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. With historic houses such as Old Soar Manor (about 1.1 miles east) nearby, there’s older building stock in the area around Yopps Green as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.
For an older house near a landmark such as Plaxtol Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. Rented homes near Borough Green & Wrotham station change hands often, and sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Yopps Green is about 5 miles north of Tonbridge, in Kent. If you need window mastic in Yopps Green, it’s easy to get a quote: please ring 0345 464 0079 or drop us an email. We cover Kent from our Crawley base, Yopps Green included. Our area takes in 922 places across Kent, from the larger towns to small villages. We also work in London, about 23 miles from Yopps Green.
Work in TN15 works the same way as everywhere else we cover. Local streets include Sheet Hill and Yopps Green, all of which we cover. Other places close to Yopps Green include Sheet Hill (1 mile north-west), Ivy Hatch (1 mile west), Ightham (1 mile north-west), Shipbourne (1 mile south) and Oldbury (2 miles north-west). Within a short drive, we also cover Maidstone (10 miles east), Dartford (13 miles north), Sevenoaks (5 miles west), Royal Tunbridge Wells (9 miles south), Gravesend (12 miles north) and Tonbridge (5 miles south).
What’s near Yopps Green
Around Yopps Green, our work takes us to homes and buildings near Ivy Hatch Nature Reserve, Wrotham School and The Plough Public House and the streets around them. The nearest railway station is Borough Green & Wrotham station, roughly 2 miles north. Other landmarks nearby include Ightham Court (2.1 miles north) and Sevenoaks Hospital (4.6 miles west).
Your questions about window mastic in Yopps Green
Do you cover smaller places like Yopps Green?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Is Yopps Green in your area for window mastic?
Yes. Our work covers London and the South East, and Yopps Green is part of that. You can call 0345 464 0079 or email us and tell us what needs doing.
Do you remove the old sealant?
Yes, always, and completely. New sealant will not bond properly to old, so the joint is cleaned back first.
Which products do you use?
The product depends on the job: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. Brands we use include Arbo and Everbuild.
Does someone need to be in?
That depends on where the joints are. For work indoors, someone needs to let us in.
Do you have sealant for grey or black windows?
Yes. We can use white, brown, anthracite grey, black or clear, so the joint suits the frame.
Can you reach windows above the ground floor?
Normally, yes. Access is planned before any work starts.
Are you ARBOMaster approved?
Yes. We hold ARBOMaster approved applicator status and we are fully insured too.
What happens on the day
Every visit runs the same way: we check the joints, protect the area around them, carry out the job and tidy away. Most jobs take a few hours for a handful of frames, longer for a whole house. In a small place like Yopps Green, access is generally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We check how each frame can be reached safely.
- 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.
Before we arrive
- Let us know about earlier repairs to the joints
- Let us know if you’ve seen damp or leaks
- Tell us about access, such as stairs, a lift or high-level joints
Getting a quote
Every job is quoted individually. Just ring 0345 464 0079 or send us an email with the details.
Related advice
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Why deal with it now?
A quick bead over the top of old mastic looks like an easy fix, but it will not grip old, dirty sealant. It soon lifts and the leak carries on behind it. Proper resealing starts with removing the old joint. Older cottages and farmhouses around Yopps Green can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
Commercial jobs are quoted on the same basis as homes: the amount of work, how we reach it and what it needs, plus any working-time requirements on site. Ask us for a quote and we’ll go through it with you.
Why book with us
- Colour agreed with you before work begins
- 180+ five-star Google reviews
- Experience in homes, commercial sites and hotels
- An ARBOMaster approved applicator
Read our cost guide and our reviews.
What the job involves on each surface
Composite doors
Front doors take the weather head on. We pay most attention there.
Aluminium frames
Large aluminium doors have long joints down each side and across the head, and the bottom joint sees the most water. We prepare and reseal every joint, backing the deep ones.