Greater London · England
Gutter Sealing in Kingston upon Thames
Sealing leaking gutter joints, end caps, fascias, soffits and roofline trims in Kingston upon Thames, with a 12-month guarantee on every job. Call for a quick quote.
- Trim joints where the sealant has failed
- Internal damp traced to a gutter joint
- Garage door frames letting rain in
Gutter sealing in Kingston upon Thames, done properly
Sealant only bonds to a clean, dry joint. So the old sealant and grime come out first and the joint is dried before the new sealant goes in. We work on gutter end caps, garage door frames and roofline trims, and common reasons people get in touch are rain getting in around a garage door and earlier gutter repairs that have peeled off.
London’s terraces and conversions often share walls, gutters and downpipes with their neighbours, so a leaking gutter joint or failed wall joint can affect more than one home. For a flat in Kingston upon Thames, check the lease for who looks after the outside.
A 12-month guarantee comes with the work, just as it does everywhere we cover.
- Location
- Kingston upon Thames (KT2, KT1, TW10)
- Wider area
- Greater London
- Cover
- A year, on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
How to look after the new joints
Joint life depends on how it’s used and looked after. We suggest:
- Glance at the soffit joints now and then
- Keep ladders off the guttering
- Check the gutters during heavy rain
- Sort out a dripping joint early
Have a look at the gutter during a downpour now and then. Drips are easiest to spot while it’s raining.
Split sealant on fascias and trims lets water in behind. Sealing it early keeps the boards behind dry and the wall below.
When it isn’t the sealant
Sealant isn’t the answer to every problem, and we’ll tell you before we start. Sealant will not put right:
- Gutters that have dropped or pulled away
- Cracked, split or warped gutter sections
- Blocked downpipes
Not sure which it is? You can call 0345 464 0079 or drop us an email and we’ll tell you honestly before booking.
What we seal
- Garage door frames
- uPVC fascias
- Roofline trims
- Gutter joints
- Soffit joints
- Gutter end caps
Surface by surface
Roofline trims
We reseal trim joints with an exterior sealant.
Gutter joints
A gutter joint has to cope with movement and standing water. A gutter sealant made for the job holds best.
Should I try it myself first?
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and getting the depth right matters as much as the look.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
How the visit works
At the end, we look at the finished work together. The visit itself normally takes anything from an hour or two to a few hours, depending on the amount of work. For a job in Kingston upon Thames, parking and access are the things to plan: tell us about permits, visitor bays or off-street space, which floor we are working on and whether there’s a lift.
- We look at where the water is coming from and check the gutter isn’t broken or sagging.
- We clean out the joint and take out the old sealant.
- The joint is dried, because sealant won’t bond to a wet surface.
- An exterior or gutter sealant is applied to the joint.
- The run is checked and any debris near the joints is cleared.
Before we arrive
- On commercial sites, let us know about site rules
- Let us know about earlier repairs to the joints
- Let us know if you’ve seen damp or leaks
How to get a quote
We don’t publish a price list, because every job is different. Instead, we give you a clear quote for your job. To get started, call 0345 464 0079 or drop us an email.
Advice
Places near Kingston upon Thames
More services for Kingston upon Thames
Walls and rooflines in Kingston upon Thames
Historic houses like Hampton Court Palace (about 1.8 miles south-west) are a reminder that the area around Kingston upon Thames has older buildings as well as new. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material. In terraces and conversions, gutters and walls are often shared with the neighbours, so it’s worth agreeing who is responsible before work starts.
Homes close to Church of St Luke include some older properties, and an extension built onto an older house moves differently, and the joint between them takes the strain. As a London address, Kingston upon Thames can be tricky for parking: tell us about permits, visitor bays or off-street space when you book. Letting a property close to Kingston station? Then a gutter joint that drips onto the wall can turn into a damp complaint, so it’s worth checking.
Kingston upon Thames is about 7 miles south-west of Kensington, in Greater London. Across the KT2 area, our applicators can take on gutter sealing. Our Greater London coverage runs to 764 places, Kingston upon Thames among them. London is on our list too, about 11 miles from Kingston upon Thames.
Jobs for gutter sealing in KT2, KT1 and TW10 works the same way as everywhere else we cover. You will find streets such as Sigrist Square, Old London Road and London Road, and we cover them all. You will find Kingston upon Thames on the B3365, so it’s easy for us to get to with everything needed for gutter sealing. We also cover Norbiton (1 mile east), Coombe (2 miles east), New Malden (2 miles south-east), Coombe Hill (2 miles north-east) and Motspur Park (2 miles east). Further out, we also cover London (11 miles north-east), City of Westminster (9 miles north-east), Marylebone (10 miles north-east), Kensington (7 miles north-east), St Pancras (11 miles north-east) and Shoreditch (12 miles north-east).
Landmarks near Kingston upon Thames
Typical jobs here are in homes near Canbury Gardens, The Grey Horse pub and Kingston Grammar School and the streets around them. Kingston upon Thames has its own railway station: Kingston station. Well-known places in the area include Eel Pie Island Museum (2.6 miles north-west) and Kingston Hospital (0.7 miles east). Not far away are Rose Walk and Kingston Hill Road area.
What happens if it’s left?
A bead squeezed onto a wet joint might hold for a while but it tends to peel off. Cleaning out and drying the joint first is what makes it last. In a flat in Kingston upon Thames, failed sealant seldom stays inside your own four walls: water can reach the neighbours below, and gaps in fire-rated joints affect the whole building.
There are no prices on our website, because the cost depends so much on the job itself. For a quick quote, please ring 0345 464 0079 or drop us an email and we will talk you through it.
Why choose Mr Mastic in Kingston upon Thames
- Neat joints and a tidy finish
- Fully insured
- A sealant colour to suit the surroundings
- We agree the colour with you first
Take a look at what affects the cost and what customers say.
What affects the cost of gutter sealing
Your quote is based on your job. We look at:
- Any mould that needs treating
- Working hours on commercial sites
- Whether the work is at height
- Whether old sealant or filler has to be cut out
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you’re unsure, phone 0345 464 0079 or send us an email for an honest opinion and a quote.
Asking for a quote
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- Where the job is, and your postcode
- Roughly how big the job is
- How we’d reach the joints
- Whether it’s a home or a business
For a quote, phone 0345 464 0079 or email us and tell us where the job is and what the problem looks like. We will give you a clear quote before any work starts.
FAQs for Kingston upon Thames
Do you work for landlords with property near Kingston station?
Yes. We work for landlords and letting agents as well as homeowners, and several properties can be quoted together. Just ring 0345 464 0079 or drop us an email with the address and what needs doing, and we will give you a clear price.
Do you cover Kingston upon Thames for gutter sealing?
Yes. Our work covers London and the South East, and Kingston upon Thames is part of that. Just call 0345 464 0079 or send us an email with a few details of the job.
Do you do commercial work?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. Working times can be discussed when we quote.
Do you have insurance?
Yes, we’re fully insured for domestic and commercial work.
Is the work guaranteed?
Every job comes with our 12-month guarantee.
Do you offer different sealant colours?
Usually, yes. Sealants come in white, clear, grey and other colours for many products, and we agree the colour with you before any work starts.
Can you reach high gutters?
That depends on the building. Let us know the height and the ground below when you ring 0345 464 0079 or email us.
How long does the job take?
A typical job takes an hour or two for a few joints, longer for a full run, including the preparation. Your quote will say how long we expect yours to take.