Greater London · England
Gutter, fascia & soffit sealing in Southborough, Greater London
We cover Southborough for sealing leaking gutter joints, end caps, fascias, soffits and roofline trims. Old sealant removed completely, joints prepared properly and a one-year guarantee.
- Damp patches inside below a leaking gutter
- Open joints in fascias and soffits
- Quick sealant fixes on gutters that didn’t last
Why it’s worth doing now in Southborough
Sealant will not clear a blocked downpipe. We look at what’s really happening and point you to the right trade if needed. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and once it shows in Southborough, the repair is bigger than a sealant job.
Some things make a job bigger or smaller: the old material and how easily it comes out, whether mould needs treating, and whether the work is at height. We take all of that into account in your quote.
Why Southborough clients choose us
- Arbo and Everbuild products
- Over 20 years’ experience
- Anti-fungal silicone where joints get wet
- Tidy, careful work
Read our cost guide and customer reviews.
Gutter sealing for homes and businesses in Southborough
For gutter sealant to hold, the joint has to be clean and dry. That is why we take out the old sealant and dirt first, then dry the joint before sealing. We work on garage door frames, gutter end caps and gutter joints, and people most often call us about trim joints where the sealant has failed and water dripping where gutter sections meet.
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 Southborough, it’s worth checking who is responsible for the outside before booking.
All of our work is guaranteed for twelve months.
- Where
- Southborough (BR2, BR1)
- Wider area
- Greater London
- Guarantee
- One year on every job
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Should I try it myself first?
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
Gutter sealing in Southborough: local notes
Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. London terraces and converted houses often share gutters, downpipes and walls, so check who is responsible for the outside before booking.
If you let a flat or house near Bickley station, leaking gutter joints on a rental are best caught before they stain the walls. Southborough is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
Southborough is about 2 miles south-east of Bromley, in Greater London. Every kind of property in Southborough can book us for gutter sealing. The work is guaranteed for a year. Southborough is one of 764 places in Greater London where we work. London is on our list too, around 10 miles away.
Work in BR2 and BR1 is quoted and booked the same way as anywhere else. You’ll find streets such as Pope Road, Crown Lane and Union Road, all of which we cover. Nearby, we also carry out gutter sealing in Bromley Common (1 mile south-west), Petts Wood (1 mile east), Locksbottom (2 miles south-east), Shortlands (2 miles west) and Crofton (2 miles south-east). We also work in nearby towns such as London (10 miles north-west), City of Westminster (12 miles north-west), Marylebone (12 miles north-west), Kensington (13 miles north-west), St Pancras (12 miles north-west) and Shoreditch (11 miles north-west).
Around Southborough
Typical jobs here are in homes near Bishop Justus CofE School, Jubilee Country Park and The Chequers Public House and the streets around them. Southborough’s nearest station is Bickley station, roughly 0.7 miles north. Well-known places in the area include Bethlem Museum of the Mind (0.9 miles south-west) and Bridgeways Day Hospital (less than half a mile south). Not far away are Summer Hill and Downham Woodland Walk.
Towns and villages near Southborough
What else we do in Southborough
Southborough: your questions answered
Is parking a problem for a job in Southborough?
In much of London, parking needs planning: a visitor permit or a bay close to the door helps a lot.
Is Southborough in your area for gutter sealing?
Yes, Southborough is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or drop us an email and tell us what needs doing, and we’ll send you a clear quote.
Can you fit new guttering?
No, we reseal joints, end caps and trims. Replacement needs a gutter installer or roofer.
Where is Mr Mastic based?
We work from Crawley. We cover Southborough and the rest of Greater London.
Can you match the sealant colour?
In most cases you can choose. We’ll tell you which colours the right product comes in and agree one before work begins.
Do you seal gaps in fascias and soffits?
Yes, it’s a common job. Each joint is cleaned and sealed.
How long does gutter sealing take?
A typical job takes anything from an hour or two to a few hours, including preparation and clearing up. Your quote will say how long we expect yours to take.
Is the work guaranteed?
You get our one-year guarantee to all our work.
What we do, step by step
There is not much for you to do on the day. Show us the job and we’ll take it from there. The work itself takes a few hours, depending on the number of joints and the access from start to finish. In Southborough, flats, stairs and shared entrances are part of the routine. If the building has a concierge, managing agent or access rules, tell us when you book.
- First we agree which joints need sealing.
- We clean out each joint.
- We make sure everything is dry.
- The sealant is applied and finished.
- We check our work before we leave.
Preparing for the visit
- Clear items away from the joints we are working on
- For business premises, tell us about site rules or sign-in
- Tell us about any water getting in
How to get a quote
For a quote, ring 0345 464 0079 or send us an email with the location and a short description of the problem. You will have a clear quote before work begins.
Related advice
How to look after the new joints
So the new joints stay in good condition:
- Sort out a dripping joint early
- Clear leaves and moss from the gutters
- Watch for drips in a downpour
- Keep downpipes clear
Make sure downpipes are not blocked so the gutter can drain. A blocked pipe backs water up to the joints.
A drip from a gutter joint will not stop on its own. The same spot gets soaked every time it rains, which can lead to staining and damp.
Different surfaces, different methods
Soffit joints
Open soffit joints let draughts in. We close them with a suitable sealant.
Roofline trims
We reseal trim joints with an exterior sealant.
Landlords, agents and businesses in Southborough
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. Several properties can go on one quote.
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we’ll give you a quote.
When to call us in Southborough
Gutter joints depend on seals that wear out. Temperature changes make gutters move and that movement opens up tired joints.
If you can see any of these, it’s time to have the joints looked at:
- Failed sealant on a garage door frame
- Wet patches on the wall under a gutter joint
- End caps that drip every time it rains
- Leaking gutter joints and stop ends
If you look after a building such as Southborough Primary School, larger buildings have long runs of movement joint that eventually need resealing.
Questions to ask before booking
- Who does the work, and how experienced they are
- How the colour is chosen
- Which sealant they’ll use, and why
- Whether they’re fully insured