Greater London · England
Gutter Sealing in Greenwich
Sealing leaking gutter joints, end caps, fascias, soffits and roofline trims for householders, landlords and businesses in Greenwich. Fully insured, ARBOMaster approved and guaranteed for a year.
- Open joints in fascias and soffits
- Rain getting in around a garage door
- Streaks down the brickwork from a leaking joint
Gutter sealing in Greenwich, done properly
A leaking gutter joint marks the wall and wets the ground underneath. Often a reseal is enough if the gutter is not damaged. Typical jobs include water running down the wall below the gutter and quick sealant fixes on gutters that didn’t last, across soffit joints, gutter joints and roofline trims.
London’s terraces and conversions often share walls, gutters and downpipes with their neighbours, so one failed joint can cause damp for more than one household. In a converted house in Greenwich, it’s worth checking who is responsible for the outside before booking.
We stand behind the work with a 12-month guarantee, so you are covered after we’ve gone.
- Location
- Greenwich (SE10, SE3, SE8)
- Region
- Greater London
- Cover
- 12 months on all our work
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
FAQs for Greenwich
Can you help a landlord with a rental near Maze Hill station?
Yes. We work for landlords and agents as well as householders. Just call 0345 464 0079 or email us with the address and what needs doing, and we’ll send you a clear quote.
Is parking a problem for a job in Greenwich?
It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. The visit is then planned around what’s available.
What guarantee comes with the job?
Every job comes with our 12-month guarantee.
What do you put in the joint?
We choose the sealant for the joint, not the other way round. Movement, water and weather all affect the choice.
Can a leaking gutter joint be sealed?
In many cases, yes. Cleaning, drying and resealing the joint usually works. If the section is split or warped, it needs replacing.
How long does gutter sealing take?
Typically it takes an hour or two for a few joints, longer for a full run. Bigger jobs take longer, and we will tell you how long to expect.
Do you clean gutters?
We clear debris near the joints because the joint must be clean. A full gutter clean is a separate job.
Can you seal fascia and soffit joints?
Yes. Open joints along uPVC fascias and soffits can be sealed in a matching colour.
Nearby places to Greenwich
What else we do in Greenwich
Greenwich buildings and the weather
London terraces and converted houses often share gutters, downpipes and walls, so check who is responsible for the outside before booking. Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
As a London address, Greenwich can be tricky for parking: let us know about parking bays, permits or a driveway. In the older streets around St Mary's Church, the joints between older walls, newer extensions and the roofline need a sealant that can move.
Greenwich is about 4 miles east of London, in Greater London. If you need gutter sealing in Greenwich, please call 0345 464 0079 or send us an email for a quick quote. We’re based in Crawley and cover Greater London. Our Greater London coverage runs to 764 places, and Greenwich is one of them.
We work across the SE10, SE3 and SE8 postcode area for gutter sealing and the streets around it. If you need gutter sealing at a property on Cade Road, Webb Road and Creek Road or a nearby road, our applicators can take on the job. Greenwich sits on or near the A2203 and A2211, which makes travel easy. Neighbouring places we cover for gutter sealing include Maze Hill (1 mile north-east), Vanbrugh Park Estate (1 mile east), Blackheath (1 mile south-east), Westcombe Park (1 mile east) and Isle of Dogs (1 mile north-west). Further out, we also cover London (4 miles west), City of Westminster (7 miles west), Marylebone (7 miles west), Kensington (9 miles west), St Pancras (6 miles north-west) and Shoreditch (5 miles north-west).
Around Greenwich
Around Greenwich, our work takes us to homes and buildings near The Plume of Feathers pub, John Roan School and Royal School of Naval Architecture and Marine Engineering. Nearby too are Island Gardens (0.6 miles north-west) and St. Paul's (1.1 miles west). Greenwich has its own railway station: Maze Hill station. Nearby you will also find Greenwich Castle (less than half a mile south-west) and Greenwich District Hospital (0.5 miles north-east). For a walk, there’s Tower Hill and Creekside Discovery Centre.
Why deal with it now?
You don’t need new fascias just because the joints have opened. A neat seal closes the gaps as long as the boards are in good condition. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and once it shows in Greenwich, the repair is bigger than a sealant job.
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. Ask us for a quote and we will go through it with you.
Why choose Mr Mastic in Greenwich
- Experience in homes, commercial sites and hotels
- Trusted Arbo and Everbuild sealants
- 20+ years of sealant experience
- 4.9 on Google from 180+ five-star reviews
Quotes for gutter sealing in Greenwich
We quote each job individually. These are the things that affect it:
- Working hours on commercial sites
- Whether old sealant or filler has to be cut out
- The number and length of the joints
- Which sealant suits the joint
Every job is a little different, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all play a part.
What we need to know
To help us quote quickly, let us know:
- Any access issues, like height or stairs
- Where the job is, and your postcode
- Whether it has been sealed before
- Photos by email, if that’s easy
For a quote, call 0345 464 0079 or email us and tell us where the job is and what the problem looks like. We’ll send you a clear quote before any work starts.
DIY sealant or a professional job?
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Common problems we fix in Greenwich
Debris in the gutter keeps water sitting at the joints. Standing water finds the weakest joint and leaks out.
Look out for these signs:
- Open joints in fascias and soffits
- Quick sealant fixes on gutters that didn’t last
- End caps that drip every time it rains
- Rain getting in around a garage door
Rented homes near Maze Hill station change hands often, and a gutter joint that drips onto the wall can turn into a damp complaint, so it’s worth checking.
Questions to ask before you book
- How long the guarantee is
- How much experience the applicator has
- Are they insured?
- How the surfaces are prepared before sealing
Keeping the joints in good condition
No joint lasts for ever, but care makes a real difference. Our tips:
- Look along the fascias for open joints
- Do not leave a sagging gutter
- Watch for drips in a downpour
- Deal with a drip before winter
If a gutter starts to sag, get the brackets looked at. If it drops, the joints will open.
The sooner a gutter leak is sealed, the less water reaches the wall. If we find a bigger problem, we’ll tell you.
For landlords and businesses
Housing providers, facilities teams and property managers book us too. Several sites can be quoted together, and we’re fully insured.
If you manage several properties in or around Greenwich, jobs at different addresses can go on one quote. Send us the addresses and the work at each.
How it works
Good joint work is mostly preparation, and we do not rush it. Joints are cleaned back and dried before anything new goes in. All told, the work takes anything from an hour or two to a few hours. In a London area like Greenwich, 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.
- First we agree which joints need sealing.
- Each joint is cleaned and any old sealant removed.
- We make sure everything is dry.
- The sealant is applied and finished.
- The joints are checked once sealed.
Before we arrive
- For indoor joints, keep the area dry beforehand if you can
- Keep pets and children clear of the area while we work
- Let us know about parking restrictions
Getting a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints.