Greater London · England
Gutter Sealing in Kensington
Sealing leaking gutter joints, end caps, fascias, soffits and roofline trims for homeowners, landlords and businesses in Kensington. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Water dripping where gutter sections meet
- Old sealant on roofline trims that has split
- Water running down the wall below the gutter
How it works
There is not much for you to do on the day. Show us the job and we will take it from there. The work itself takes a few hours, depending on the number of joints and the access. In a London area like Kensington, the main things to plan are parking and access: let us know about parking, the floor we’ll be working on and any lift or shared entrance.
- We find where the water is coming from and check the gutter is sound.
- The old sealant and dirt are cleaned out of the joint.
- The joint is dried before sealing.
- A gutter sealant is applied to the joint.
- The gutter is checked and debris around the joints cleared.
Preparing for the visit
- Where the joints are inside, avoid wetting them before we arrive
- Let us know about earlier repairs to the joints
- Clear items away from the joints we’re working on
Ask for a quote
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 send you a clear quote before work begins.
Advice
Gutter sealing in Kensington, done properly
A drip at a gutter joint is easy to ignore, but the water lands on the same spot every time it rains. Resealing it is a small job if the gutter is otherwise in good order. If you have drips from gutter joints and end caps and cracked sealant along roofline trims, we can help, whatever the surface.
Outside work in London starts with access: side passages, upper floors and where to park. For a home in Kensington, tell us how high the joints are and how to reach the back of the building.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Where
- Kensington (W11, W8, W14, SW7)
- Region
- Greater London
- Guarantee
- A year, on every job
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Looking after it afterwards
Good habits help new joints last longer. Our tips:
- Glance at the soffit joints now and then
- Get leaks sealed before the wet months
- Keep an eye out for wet patches below a joint
- Watch for drips in a downpour
While checking gutters, glance at the fascia joints too. Splits are easier to seal early.
A leaking stop end is best sealed before the wet months. Water down the wall all winter can cause damp.
Kensington buildings and the weather
London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. London terraces and converted houses often share gutters, downpipes and walls, so it’s worth agreeing who is responsible before work starts.
Rented homes near Kensington Olympia station change hands often, and leaking gutter joints on a rental are best caught before they stain the walls. Kensington is in London, so parking needs planning: let us know about parking bays, permits or a driveway.
Kensington is about 5 miles west of London, in Greater London. If you need gutter sealing in Kensington, it’s easy to get a quote: please phone 0345 464 0079 or email us. We are based in Crawley and cover Greater London. Our Greater London coverage runs to 764 places, Kensington among them.
We cover every part of the W11, W8, W14 and SW7 postcode area for gutter sealing and the streets around it. Streets in the area include Kensington High Street, Edwardes Square and Somerset Square. Kensington sits on or near the A402 and B316, so getting to you is simple. We also cover the places around Kensington: Holland Park (1 mile north), Notting Hill (1 mile north), Shepherd's Bush (1 mile west), Notting Dale (1 mile north) and White City (1 mile north-west). Within a short drive, we also cover London (5 miles east), Marylebone (3 miles north-east), St Pancras (4 miles north-east), Shoreditch (6 miles east), Walthamstow (10 miles north-east) and Hoxton (6 miles north-east). Kensington is among the bigger towns we cover in Greater London.
Near you in Kensington
We work in homes and buildings around Holland Park, Scarsdale Tavern and Holland Park School and the streets around them. Nearby too are Kensington School (0.5 miles east) and Abdus Salam Library (1 mile east). Kensington has its own railway station: Kensington Olympia station. Nearby you’ll also find Kensington Arcade (under half a mile east) and London Museum (0.7 miles north-east). Open spaces near Kensington include WWT London Wetland Centre and The Long Water.
Surface by surface
uPVC fascias
Our work is the joints, not new fascias. If boards are damaged, we will tell you.
Soffit joints
Gaps at soffit joints can let in draughts and insects. A neat seal closes them.
DIY sealant or a professional job?
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
Also near Kensington
More services for Kensington
What happens if it’s left?
Replacing guttering is a much bigger job than sealing joints. Where the gutter is in good order and only a joint leaks a reseal is all it needs. If it’s broken or sagging, a gutter installer needs to look. Converted houses in London often have a bathroom above someone else’s living room, and a slow leak from a failed seal can end up in the flat below. Putting it right early is much less trouble for homes in Kensington.
Rather than a set price list, we look at what your job involves: the amount of work, the old material and the access. The price is agreed before we begin.
Why choose Mr Mastic in Kensington
- You choose the colour before work begins
- Domestic, commercial and hotel work
- Trusted Arbo and Everbuild sealants
- Old sealant always removed completely
Read our cost guide or customer reviews.
Your questions about gutter sealing in Kensington
Is parking a problem for a job in Kensington?
In much of London, parking needs planning: a visitor permit or a nearby bay makes the day run more smoothly.
Do you work for landlords with property near Kensington Olympia station?
Yes, rental work is part of what we do. You can ring 0345 464 0079 or email us with the address and a few details, and we will give you a fixed price before any work starts.
What should I tell you?
Where the job is, what the problem is and roughly how big it is. If you can, email a few photos.
Is sealant enough for a gutter that has dropped?
Sealant will not hold a sagging gutter. A gutter installer needs to refix it, and we’ll tell you if that’s what we find.
Is it OK to seal over old sealant?
No, it won’t last. It can look neat for a few weeks, but the new bead soon lifts. The old sealant has to come out completely.
Can you quote for more than one area?
Yes. More than one area can go on one quote.
Is there any odour?
There can be a smell while the sealant cures. Opening a window helps.
Is the work guaranteed?
Every job comes with our one-year guarantee.
What we’re called out for in Kensington
Gutter joints rely on seals that age. Temperature changes make gutters move and that movement opens up tired joints.
The problems people normally mention when they call include:
- Cracked sealant along roofline trims
- Stop ends leaking at the end of a run
- Fascia boards with gaps between them
- Old gutter sealant that has let go
Managing a site like St Barnabas and St Philip's CofE Primary School? Then larger buildings have long runs of movement joint that eventually need resealing.
What to look for in a quote
- How long to leave it before use
- Is the old sealant removed completely?
- Whether VAT is included
- What happens if the job turns out different
Work for landlords, hotels and businesses
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
We also work for property managers and facilities teams. Several sites can go on one quote, and we’re fully insured for the work.