Greater London · England
Mottingham Gutter Sealing
Gutter sealing for Mottingham and the surrounding area: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- Rain getting in around a garage door
- Cracked sealant along roofline trims
- Damp patches inside below a leaking gutter
Gutter sealing in Mottingham
A drip at a gutter joint is easy to ignore, but each shower sends water to the same place. Resealing it is a small job if the gutter is otherwise in good order. We work on garage door frames, gutter joints and roofline trims, and people most often call us about damp on an inside wall under a dripping gutter and garage door frames letting rain in.
Working on the outside of a London home means planning access: shared paths, upper floors and parking. In Mottingham, joints up high may need ladders or other access, which is worth talking through when you book.
You are covered for a year from the day we finish. If there’s a problem with it, please call 0345 464 0079 or drop us an email.
- Where
- Mottingham (SE9, SE12, BR1)
- Wider area
- Greater London
- Cover
- 12 months on all our work
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
When something else is needed
Before you book, it’s worth knowing the limits:
- Fascias that need replacing
- Brackets that have snapped or loosened
- Problems with the roof covering
If in doubt, call 0345 464 0079 or drop us an email and we’ll say what we think before booking.
Joints and surfaces we work on
- Gutter end caps
- Roofline trims
- Gutter joints
- uPVC fascias
- Garage door frames
- Soffit joints
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, resealing is the sensible fix. If it has failed, we will tell you. In a London flat, a failed joint rarely stays your problem alone: water from a shower or window joint can reach the flat below, and gaps in fire-stopping matter to everyone in the building.
Combining jobs into one visit is usually more efficient than separate visits, so tell us about everything that needs sealing. You’ll get one clear quote for the whole job.
Why choose Mr Mastic in Mottingham
- Rated 4.9 stars on Google
- Any old sealant cut out fully, not covered over
- We are fully insured
- A choice of colours where the product allows
Read how sealant jobs are priced or our reviews.
What we do, step by step
All our tools and materials come with us in the van. Once we have agreed what’s being done, the area is protected and the work begins. It normally takes an hour or two for a few joints, longer for a full run. In a London area like Mottingham, 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 look at where the water is coming from and check the gutter is not broken or sagging.
- The joint or trim is cleaned out and old sealant removed.
- We make sure the joint is dry before sealing.
- An exterior or gutter sealant is applied to the joint.
- We check the run and clear any debris we find while we are there.
Before we arrive
- Tell us about access, such as stairs, a lift or high-level joints
- Mention if the joints have been sealed before
- Let us know if you’ve seen damp or leaks
How to get a quote
Every job is quoted individually, so the first step is telling us about yours. Just ring 0345 464 0079 or email us with the details and send pictures if you have them.
Advice
What we are called out for in Mottingham
Gutter joints rely on seals that age. Temperature changes make gutters move, and old seals crack or slip.
These are the problems we are asked about most:
- Water running down the wall below the gutter
- Rain getting in around a garage door
- Dripping gutter ends
- Water dripping where gutter sections meet
For an older house near a landmark such as Jubilee International Church, an extension built onto an older house moves differently, and the joint between them takes the strain.
Comparing quotes
- Whether all the old sealant comes out first
- What the cure time is
- How the joint is cleaned and prepared
- What guarantee comes with the work
Work for landlords, hotels and businesses
For anyone letting property in or around Mottingham, several properties can be quoted together. Send us the addresses and the work at each, and pictures by email help.
We work for landlords and agents as well as homeowners. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
Questions from Mottingham
Do you cover Mottingham for gutter sealing?
Yes, Mottingham is within the area we cover. Our work covers London and the South East. You can phone 0345 464 0079 or email us and tell us what needs doing, and we will give you a clear price.
Is parking an issue for gutter sealing in Mottingham?
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.
When is the sealant fully cured?
Most sealants are touch-dry well before they’re fully cured. We will give you the cure time for the product we used.
What do you put in the joint?
We choose the sealant for the joint, not the other way round. Where it moves, gets wet or faces the weather makes a difference, and we will tell you what we’re using.
Do you replace gutters or fascias?
No. We seal leaking joints and trims. A gutter installer or roofer deals with replacement.
Is the work guaranteed?
Our 12-month guarantee applies to all our work.
I’m a tenant. Can you help?
Yes, though it’s best to check with your landlord first. Many landlords are glad to have it sorted.
Do you work on high-level gutters?
That depends on the building. Let us know the height and the ground below and we will confirm what’s needed.
DIY sealant or a professional job?
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
If you’ve already had a go yourself, that is fine. We cut it out and start again, so tell us about it when you ask for a quote.
Places near Mottingham
Other services in Mottingham
Gutter sealing in Mottingham: local notes
In terraces and conversions, gutters and walls are often shared with the neighbours, so it’s worth agreeing who is responsible before work starts. With historic houses such as Eltham Palace (about 1.1 miles north-east) nearby, there’s older building stock in the area around Mottingham as well as newer homes. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth.
If you let a flat or house near Grove Park station, a dripping gutter joint or loose fascia trim is easy to miss until damp shows inside. Mottingham is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
Mottingham is about 1 mile south-west of Eltham, in Greater London. Jobs in Mottingham get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. Our Greater London coverage runs to 764 places, Mottingham among them. There’s also a page for London, roughly 7 miles from Mottingham.
All of SE9, SE12 and BR1 is within our area for gutter sealing, from the main roads to the quietest streets. Local streets include Horley Road, Dorset Road and Albert Road, all of which we cover. We also cover the places around Mottingham: Chinbrook (1 mile south-west), Grove Park (1 mile west), Coldharbour (1 mile east), Middle Park (1 mile north) and Horn Park (1 mile north-west). Larger places within reach include London (7 miles north-west), City of Westminster (10 miles north-west), Marylebone (10 miles north-west), Kensington (11 miles north-west), St Pancras (9 miles north-west) and Shoreditch (8 miles north-west).
What’s near Mottingham
Around Mottingham, our work takes us to homes and buildings near Colfe's School, Chinbrook Meadows and Haberdashers' Aske's Knights Academy, among other places. The nearest railway station is Grove Park station, about 0.7 miles west. Other landmarks nearby include Greenwich Castle (3.5 miles north-west) and Prefab Museum (1.7 miles west). Green spaces nearby include Summer Hill and The Tarn.
What the job involves on each surface
Gutter end caps
End caps are resealed where they meet the gutter once clean and dry.
Garage door frames
A fresh seal around the frame stops rain getting in.