Greater London · England
Gutter, fascia & soffit sealing in Wennington, Greater London
Sealing leaking gutter joints, end caps, fascias, soffits and roofline trims in Wennington, with a 12-month guarantee on every job. Ask us for a quote.
- Old sealant on roofline trims that has split
- Open joints in fascias and soffits
- Internal damp traced to a gutter joint
What happens if it’s left?
Sealant won’t clear a blocked downpipe. We look at what’s really happening and tell you if something else is needed. In a London flat, a failed joint rarely stays your problem alone: water can reach the neighbours below, and gaps in fire-rated joints affect the whole building.
Leaving a failed joint normally makes the job bigger, not smaller. If you are unsure, ring 0345 464 0079 or drop us an email for an honest opinion and a quote.
Why choose Mr Mastic in Wennington
- Trusted Arbo and Everbuild sealants
- A 12-month guarantee on all work
- Sanitary silicone with an anti-fungal additive in wet areas
- A choice of colours where the product allows
How we handle gutter sealing in Wennington
For gutter sealant to hold, the joint has to be clean and dry. So the old sealant and grime come out first and the joint is dried before the new sealant goes in. Common call-outs are for open joints in fascias and soffits and streaks down the brickwork from a leaking joint, on gutter joints, roofline trims and gutter end caps.
Working on the outside of a London home means planning access: shared paths, upper floors and parking. In Wennington, 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 send us an email.
- Place
- Wennington (RM13)
- Region
- Greater London
- Guarantee
- A year, on every job
- Price
- A clear price before work begins
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Common problems we fix in Wennington
Sagging sections pull joints apart. Sealing won’t hold if the gutter keeps dropping so the brackets need attention first.
Common reasons people contact us include:
- End caps that drip every time it rains
- Drips from gutter joints and end caps
- Fascia boards with gaps between them
- Internal damp traced to a gutter joint
For an older house near a landmark such as St Mary and St Peter's Church, old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Before you book anyone
- Whether all the old sealant comes out first
- How long the guarantee is
- What preparation is included
- Whether VAT is included
Also near Wennington
What else we do in Wennington
How the visit works
On the day, there’s very little for you to do. Point us to the joints and we will get on with it. The work itself takes a few hours, depending on the number of joints and the access from start to finish. Many London jobs are in flats, so we come ready for stairs, narrow hallways and shared entrances. Mention any building rules, key holders or managing agents when you book.
- We start by tracing the leak and checking the gutter itself is sound.
- The joint or trim is cleaned out and old sealant removed.
- The joint is dried, because sealant won’t bond to a wet surface.
- An exterior or gutter sealant is applied to the joint.
- We check the run and clear any debris we find while we’re there.
Preparing for the visit
- On commercial sites, let us know about site rules
- Keep pets and children clear of the area while we work
- Mention any tricky access
How to get a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and email pictures if that is easy.
Read more
Quotes for gutter sealing in Wennington
We quote each job individually. These are the things that affect it:
- Whether old sealant or filler has to be cut out
- How easy the joints are to reach
- Mould in or behind the old joints
- How many areas need sealing
Combining jobs into one visit is usually more efficient than separate visits, so tell us about everything that needs sealing. We’ll send you a clear quote for the lot.
Helping us quote
Photos by email are helpful but not essential. Try to tell us:
- The rough size of the job
- If someone has resealed it before
- Any access issues, like height or stairs
- What the problem is, such as mould, gaps, leaks or cracking
Getting a quote is simple: let us know what needs doing and where and its rough size. A few photos by email make the job easier to understand, and we’ll take it from there.
Should I try it myself first?
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is.
How to look after the new joints
A little care helps the new joints last. Our advice:
- Don’t lean ladders against the gutter itself
- Keep an eye out for wet patches below a joint
- Get leaks sealed before the wet months
- Look at the gutters while it’s raining
Leave the new sealant to cure as we advise before poking or cleaning near it.
Early sealing limits how much water hits the wall. We will let you know if the gutter needs more than sealant.
Gutter sealing in Wennington: local notes
Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. In terraces and conversions, gutters and walls are often shared with the neighbours, so it’s worth agreeing who is responsible before work starts.
For landlords with property near Rainham (Essex) station, leaking gutter joints on a rental are best caught before they stain the walls. As a London address, Wennington can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
Wennington is about 4 miles south of Hornchurch, in Greater London. Homes, rented property, offices and hotels in Wennington is covered for gutter sealing, old or new, large or small. The work is guaranteed for a year. Across Greater London, we cover 764 places, and Wennington is one of them. For nearby work, see our London page.
Work in RM13 is quoted and booked the same way as anywhere else. If you’re just outside Wennington, we cover Aveley (1 mile east), Hacton (2 miles north), South Ockendon (3 miles east), Upminster Bridge (4 miles north) and Hornchurch (4 miles north). Further out, we also cover London (14 miles west), St Pancras (15 miles west), Shoreditch (13 miles west), Walthamstow (12 miles north-west), Hoxton (13 miles west) and Whitechapel (12 miles west).
Around Wennington
Around Wennington, our work takes us to homes and buildings near Lennard Arms Inn, Wildspace Conservation Park and Harris Academy Rainham and the streets around them. The closest station to Wennington is Rainham (Essex) station, roughly 1.4 miles north-west of the centre. A little further out are St George's Hospital (2.8 miles north) and Erith Museum (2.5 miles south-west). Green spaces nearby include Rainham Marshes Nature Reserve.
Questions from Wennington
Is parking an issue for gutter sealing in Wennington?
London parking needs a little planning, so let us know about permits, bays or a driveway when you book. That way the visit can be planned around it.
Can you help a landlord with a rental near Rainham (Essex) station?
Yes. We work for letting agents and landlords as well as householders, and several properties can be quoted together. You can call 0345 464 0079 or drop us an email with the details for a clear quote.
Will there be a smell?
That depends on the sealant. Some products have a noticeable smell, others very little, and any smell fades as they cure.
Can a leaking gutter joint be sealed?
Usually, if the gutter is sound. We clean and dry the joint before sealing so the seal holds.
Can I do it myself?
Some simple jobs can be done by a careful DIYer. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
Are you fully insured?
Yes. We’re fully insured.
Are you an approved applicator?
Yes. We’re approved under the ARBOMaster scheme, which is run for the Arbo sealant brand.
What should I tell you?
Tell us what needs doing and where, plus pictures if you have them. If we need more, we’ll ask.
When something else is needed
In fairness, there are a few things sealant won’t fix:
- Downpipes that are blocked or broken
- Fascias that need replacing
- Gutters that have dropped or pulled away
Not sure which it is? You can call 0345 464 0079 or send us an email and we’ll tell you honestly.
What we seal
- Garage door frames
- Gutter joints
- uPVC fascias
- Soffit joints
- Gutter end caps
- Roofline trims