Greater London · England
Gutter Sealing in North Greenwich
Professional gutter sealing in and around North Greenwich, with every bit of old sealant taken out first.
- End caps that drip every time it rains
- Open joints in fascias and soffits
- Rain getting in around a garage door
Gutter sealing in North Greenwich
We work across North Greenwich on leaking gutter joints and roofline trims. Single-storey and low gutters are simple to reach and if it’s higher up, let us know and we will confirm what access is needed. If you have fascia boards with gaps between them and internal damp traced to a gutter joint, we can put it right, whatever the surface.
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. In a converted house in North Greenwich, it’s worth checking who is responsible for the outside before booking.
Our work is backed for twelve months.
- Location
- North Greenwich (E14, SE8, SE10)
- Wider area
- Greater London
- Cover
- 12 months on all our work
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Your questions about gutter sealing in North Greenwich
Do you cover North Greenwich for gutter sealing?
Yes, North Greenwich is within the area we cover. Our work covers London and the South East. You can call 0345 464 0079 or send us an email and let us know what needs doing, and we will give you a clear price.
Do you work for landlords with property near Greenwich station?
Yes. We work for landlords and letting agents as well as householders, and several properties can go on one quote. Just phone 0345 464 0079 or email us with the address and what needs doing, and we will give you a clear quote.
Is gutter cleaning part of the job?
We clear debris near the joints because the joint must be clean. A full gutter clean is a separate job.
Is sealant enough for a gutter that has dropped?
No. A sagging gutter pulls its joints apart so it needs refixing before sealing.
Should I try DIY first?
You can, for simple jobs. Preparation is everything: all the old sealant out, and a clean, dry joint. If it doesn’t work out, we can redo it.
Is it OK to seal over old sealant?
No, because it fails. We remove every bit of old sealant first.
Is the work guaranteed?
Our one-year guarantee covers every job, gutter and fascia work included.
What does gutter sealing cost?
Every job is different, so each one gets its own quote. To get one, phone 0345 464 0079 or send us an email with a short description of the job.
DIY versus a professional finish
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions.
Surface by surface
Roofline trims
We seal the trims, not the roof. A roofer deals with the roof itself.
Gutter joints
Joints between gutter lengths are the most common leak point. We clean, dry and reseal them.
Places near North Greenwich
Also in North Greenwich
Why deal with it now?
Sealing over a dirty, wet joint is a quick fix that rarely lasts, but it soon lets go. Proper preparation is the difference. 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 for homes in North Greenwich.
What you pay reflects the work, not a rough estimate. That’s why we ask a few questions first and agree the price before starting.
Why choose Mr Mastic in North Greenwich
- One-year guarantee on every job
- Old sealant always removed completely
- Sanitary silicone with an anti-fungal additive in wet areas
- White, clear, grey or another colour, product permitting
Read how sealant jobs are priced and our reviews.
What affects the cost of gutter sealing
The quote reflects the job in front of us. We look at:
- The old material and how stubborn it is
- Any working-time requirements on site
- The number and length of the joints
- Whether there’s mould to deal with
Combining jobs into one visit is generally 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.
Helping us quote
Before you ask for a quote, have a think about:
- Roughly how big the job is
- Access, such as stairs, a lift or height
- If someone has resealed it before
- Where the job is, and your postcode
Need a quote? Please phone 0345 464 0079 or email us and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.
How it works
You don’t need to clear the whole room or building, just the space around the work. Everything nearby is protected, and the work takes a few hours, depending on the number of joints and the access in most cases. In North Greenwich, flats, stairs and shared entrances are part of the routine. Mention any building rules, key holders or managing agents when you book.
- We look at the gutters, fascias and trims and agree the joints to seal.
- We clean out each joint.
- The joints are dried.
- The sealant is applied and finished.
- We check our work before we leave.
Getting ready for the visit
- For indoor joints, keep the area dry beforehand if you can
- Let us know about stairs, lifts or work at height
- Let us know about earlier repairs to the joints
Get a quote
For a quote, phone 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.
Advice
What sealant work can’t fix
New sealant can’t fix everything, and we’ll tell you before we start. Sealant won’t put right:
- Roof leaks, slipped tiles or failed flashing (a roofer’s job)
- Cracked, split or warped gutter sections
- Boards that have decayed or split
If in doubt, call 0345 464 0079 or send us an email and we will say what we think before you book.
What we seal
- Soffit joints
- Gutter end caps
- Garage door frames
- uPVC fascias
- Roofline trims
- Gutter joints
Walls and rooflines in North Greenwich
With historic houses such as Queen's House (about 0.8 miles south-east) nearby, there’s older building stock in the area around North Greenwich as well as newer homes. 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.
In the older streets around Church of St Nicholas, old and new materials meet at the roofline and walls, which is where sealant earns its keep. Managing a site like Harbinger Primary School? Then its movement joints, gutters and trims need looking after like any other building’s. Rented homes near Greenwich station change hands often, and a gutter joint that drips onto the wall can turn into a damp complaint, so it’s worth checking.
North Greenwich is about 1 mile north-west of Greenwich, in Greater London. Every kind of property in North Greenwich can book us for gutter sealing. Every job comes with our 12-month guarantee. North Greenwich is one of 764 places in Greater London where we work for gutter sealing.
Jobs for gutter sealing in E14, SE8 and SE10 works the same way as everywhere else we cover. Gutter sealing is available to properties on Creek Road, Wynan Road and Undine Road and the roads around them. We also cover the places around North Greenwich: Isle of Dogs (1 mile south-east), Millwall (1 mile west), Cubitt Town (1 mile north-east), Deptford (1 mile south-west) and Greenwich (1 mile south-east). Larger places within reach include London (3 miles west), City of Westminster (6 miles west), Marylebone (6 miles west), Kensington (8 miles west), St Pancras (5 miles north-west) and Shoreditch (4 miles north-west).
Landmarks near North Greenwich
Typical jobs here are in homes near Laban Centre, Canary Wharf College 3 and St. Paul's, among other places. Also close by are Mudchute Park and Farm (less than half a mile north-east) and The Ferry House Public House (within half a mile south-east). The closest station to North Greenwich is Greenwich station, roughly 0.8 miles south of the centre. Other landmarks nearby include Old Royal Naval College (0.7 miles south-east) and Greenwich Castle (1.1 miles south-east). Open spaces near North Greenwich include Sue Godfrey Nature Park and Tower Hill.
Aftercare tips
How long the joints last depends on use and care. Here’s what we suggest:
- Have sagging gutters refixed early
- Look at the gutters while it’s raining
- Keep ladders off the guttering
- Keep an eye out for wet patches below a joint
Clear the gutters once or twice a year so water doesn’t sit on the joints. Water left in a gutter tests every joint.
The sooner a gutter leak is sealed, the less water reaches the wall. If we find a bigger problem, we’ll tell you.