Greater London · England
Gutter Sealing in Chelsea
Gutter and fascia joints in Chelsea need attention? We cut out the old, prepare the joints and apply the right sealant, with a one-year guarantee.
- Failed sealant on a garage door frame
- Open joints in fascias and soffits
- Dripping gutter ends
Gutter sealing for homes and businesses in Chelsea
It’s easy to live with a dripping gutter joint, but the water lands on the same spot every time it rains. Resealing it is a small job while the gutter is still sound. If you’re dealing with damp on an inside wall under a dripping gutter and failed sealant on a garage door frame, we can help, on garage door frames, gutter joints and gutter end caps alike.
In London terraces and converted houses, gutters and walls are often shared with the house next door, so one failed joint can cause damp for more than one household. In a converted house in Chelsea, it’s worth checking who is responsible for the outside before booking.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we will sort it.
- Location
- Chelsea (SW3, SW10, SW1X, SW1W)
- Wider area
- Greater London
- Guarantee
- A year, on every job
- Quote
- A clear price before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Landlord and commercial work in Chelsea
For anyone letting property in or around Chelsea, several properties can go on one quote. Just tell us the addresses and what each one needs.
From a single let to a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
Towns and villages near Chelsea
Other services in Chelsea
How the visit works
On the day, there’s very little for you to do. Show us the job and we will take it from there. The work itself takes an hour or two for a few joints, longer for a full run. In Chelsea, as in most of London, parking needs a little planning. A visitor permit or a nearby bay makes the visit run more smoothly.
- We look at where the water is coming from and check the gutter is not broken or sagging.
- Old sealant and dirt are removed from the joint.
- We make sure the joint is dry before sealing.
- An exterior or gutter sealant is applied to the joint.
- We look along the gutter and clear debris around the joints.
Before we arrive
- Mention any parking rules near the property
- For business premises, tell us about site rules or sign-in
- Let us know if you’ve seen damp or leaks
Get a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and add photos by email if you can.
Related advice
Gutter sealing in Chelsea: local notes
Historic houses like Carlyle's House (about 0.4 miles south-west) are a reminder that the area around Chelsea has older buildings as well as new. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth. In terraces and conversions, gutters and walls are often shared with the neighbours, so check who is responsible for the outside before booking.
If you look after a building such as Oratory Roman Catholic Primary School, larger buildings have long runs of movement joint that eventually need resealing. In the older streets around Former Welsh Congregational Church, an extension built onto an older house moves differently, and the joint between them takes the strain.
Chelsea is about 2 miles south-east of Kensington, in Greater London. For gutter sealing in and around Chelsea, please phone 0345 464 0079 or drop us an email for a quick quote. We’re based in Crawley and cover Greater London. Our area takes in 764 places across Greater London, from the larger towns to small villages.
Work in SW3, SW10, SW1X and SW1W works the same way as everywhere else we cover. That includes homes and businesses on Markham Square, Wellington Square and Tedworth Square and the roads around them. Being close to the B302 and B304, Chelsea is simple for us to get to. Other places close to Chelsea include Brompton (1 mile north), South Kensington (1 mile west), Little Chelsea (1 mile south-west), Belgravia (1 mile north-east) and World's End (1 mile south-west). Within a short drive, we also cover London (3 miles east), St Pancras (3 miles north-east), Shoreditch (5 miles north-east), Walthamstow (9 miles north-east), Hoxton (5 miles north-east) and Whitechapel (5 miles north-east).
Near you in Chelsea
We work in homes and buildings around Burton’s Court, St Thomas More RC Language College and Markham Arms Public House. You’ll also find Natural History Museum Library and Archives (0.7 miles north-west) and Hellenic College of London (0.5 miles north). Chelsea’s nearest station is London Victoria station, roughly 1 mile north-east. Nearby you’ll also find Baynard's Castle (3.2 miles north-east) and Harrods (0.7 miles north). For a walk, there’s Campden Hill and Battersea Park Lake.
Surface by surface
Garage door frames
Garage door frames let rain in when their sealant fails. We cut it out and reseal.
uPVC fascias
We seal fascia joints, not replace the boards. If boards are damaged, we’ll tell you.
Why it’s worth doing now in Chelsea
New gutters cost far more than a few resealed joints. If the gutter is sound and the drip is a joint a reseal is all it needs. If it has failed, we will tell you. 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. Dealing with it early is far simpler.
Doing several joints on one visit is normally more efficient than separate visits, so it’s worth mentioning everything you’d like done. You will get one clear quote for the whole job.
Why Chelsea clients choose us
- We agree the colour with you first
- 4.9 on Google from 180+ five-star reviews
- Domestic, commercial and hotel work
- Full insurance on every job
Read our cost guide or customer reviews.
Chelsea questions
Is Chelsea in your area for gutter sealing?
Yes, Chelsea is within the area we cover. Our work covers London and the South East. Just call 0345 464 0079 or email us with a few details of the job, and we’ll give you a clear price.
Can you help a landlord with a rental near London Victoria station?
Yes, we work for landlords and agents. Just ring 0345 464 0079 or send us an email and tell us about the property, and we will give you a clear price.
Can you fit new guttering?
No. We seal leaking joints and trims. Replacement needs a gutter installer or roofer.
Is it messy?
Tidy work is part of the job. Nearby surfaces are protected.
How long will you be here?
Typically it takes anything from an hour or two to a few hours. Bigger jobs take longer, and we will say how long yours will take.
Can you work on commercial sites?
Yes. Commercial and hotel work is a large part of what we do, as well as homes. Working times can be discussed when we quote.
Is sealing fascia joints something you do?
We do. Our work is the joints and we will let you know if a board has failed.
Where is Mr Mastic based?
Our base is in Crawley, and we cover South East England, London and all of Scotland.
When it is not the sealant
Sealant isn’t the answer to every problem, and we’ll tell you before work begins. Sealant won’t put right:
- Blocked downpipes
- A gutter length that has split
- Leaks from the roof rather than a joint
If in doubt, call 0345 464 0079 or send us an email and we’ll say what we think.
What we seal
- Soffit joints
- Gutter end caps
- Gutter joints
- uPVC fascias
- Roofline trims
- Garage door frames
Do you need gutter sealing in Chelsea?
Debris in the gutter keeps water sitting at the joints. Water that can’t drain works its way through a weak joint and leaks out.
It’s worth asking for a quote if you see:
- Streaks down the brickwork from a leaking joint
- Drips from gutter joints and end caps
- Old sealant on roofline trims that has split
- Stop ends leaking at the end of a run
As a London address, Chelsea can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
Before you book anyone
- What guarantee comes with the work
- Is the old sealant removed completely?
- Whether the sealant suits the joint
- How much experience the applicator has
Keeping the joints in good condition
How long the joints last depends on use and care. We suggest:
- Deal with a drip before winter
- Do not lean ladders against the gutter itself
- Keep the gutters clear of debris
- Keep downpipes clear
Leave the new sealant to cure as we advise and avoid disturbing it.
A leaking stop end is best sealed before the wet months. Water down the wall all winter can cause damp.