Greater London · England
Gutter Sealing in Longlands
Professional gutter sealing in and around Longlands, with old sealant always removed completely and a 12-month guarantee.
- Damp patches inside below a leaking gutter
- End caps that drip every time it rains
- Leaking gutter joints and stop ends
Gutter sealing for homes and businesses in Longlands
Across Longlands, we reseal gutter joints, end caps and roofline trims. Low-level work is straightforward and if it’s higher up, let us know and we’ll confirm what access is needed. If you are dealing with rain getting in around a garage door and end caps that drip every time it rains, we can help.
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 Longlands, it’s worth checking who is responsible for the outside before booking.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Place
- Longlands (DA15, DA14, SE9)
- Region
- Greater London
- Guarantee
- One year on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Keeping the joints in good condition
Aftercare is simple, and it makes a real difference:
- Clean out the gutters once or twice a year
- Keep an eye out for wet patches below a joint
- Check fascia and soffit joints for gaps
- Deal with a drip before winter
Check the joints after heavy rain. It’s the easiest time to see a leak.
Once roofline sealant splits, water can get behind it. Resealing early protects the boards.
What happens if it’s left?
A new garage door is not needed for a leaking frame. Sealing the frame normally stops it. 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.
Instead of a standard rate, we price the job in front of us: the amount of work, the old material and the access. You will know the price before we begin.
Why Longlands clients choose us
- Colour agreed with you before any work starts
- Neat joints and a tidy finish
- Any old sealant cut out fully, not covered over
- Experience in homes, commercial sites and hotels
Take a look at how sealant jobs are priced or customer reviews.
Common questions in Longlands
Is Longlands in your area for gutter sealing?
Yes. Our work covers London and the South East, and Longlands is part of that. You can ring 0345 464 0079 or send us an email and tell us what needs doing, and we’ll give you a clear price.
Is parking a problem for a job in Longlands?
In much of London, parking needs planning: a visitor permit or a bay close to the door helps a lot, so mention what’s available when you book.
Can I choose the sealant colour?
In most cases you can choose. We will explain which colours are available and agree one before work begins.
What information do you need?
The location, the problem and the rough size of the job. If you can, email a few pictures.
Do you seal gaps in fascias and soffits?
Yes. Open joints along uPVC fascias and soffits can be sealed in a matching colour.
What does gutter sealing cost?
The cost depends on the size of the job, access and how much old sealant has to come out. Call for a quick quote.
Can new sealant go over the old?
No, because it fails. The old sealant always comes out first, so the new sealant bonds properly.
Can sealant stop a sagging gutter leaking?
Not on its own. If the gutter sags, the joints keep opening so it needs refixing before sealing.
What happens on the day
You do not need to clear the whole room or building, just the space around the work. Everything nearby is protected, and the job takes a few hours, depending on the number of joints and the access for a typical job. In Longlands, as in most of London, parking needs a little planning. A visitor permit or a nearby bay makes the visit run more smoothly.
- First we agree which joints need sealing.
- We clean out each joint.
- The joints are dried.
- The sealant is applied and finished.
- The joints are checked once sealed.
How to prepare
- Plan for the work area to be out of bounds to pets and children
- Mention any leaks or damp you’ve noticed
- Let us know about earlier repairs to the joints
Getting a quote
If you are in Longlands and need gutter sealing, call 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and you will get a clear quote before any work starts.
Related advice
Places near Longlands
Also in Longlands
How the job changes by surface
Soffit joints
Gaps at soffit joints can let in draughts and insects. A neat seal closes them.
Roofline trims
Trim joints are cut out and resealed suited to the material.
Walls and rooflines in Longlands
Historic houses like Eltham Palace (about 2 miles north-west) are a reminder that the area around Longlands has older buildings as well as new. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth. In terraces and conversions, gutters and walls are often shared with the neighbours, so it’s worth agreeing who is responsible before work starts.
If you look after a building such as Longlands Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. Longlands is in London, so parking needs planning: let us know about parking bays, permits or a driveway.
Longlands is about 1 mile west of Sidcup, in Greater London. Every kind of property in Longlands can book us for gutter sealing. Every job comes with our 12-month guarantee. Our Greater London coverage runs to 764 places, and Longlands is one of them. For nearby work, see our London page.
Jobs for gutter sealing in DA15, DA14 and SE9 works the same way as everywhere else we cover. If you need gutter sealing at a property on Main Road, Alder Road and Sidcup Road or a nearby road, we can help. With the A211 close by, Longlands is easy for our applicators to reach. We also cover the places around Longlands: Foxbury (1 mile south), New Eltham (1 mile north-west), Chislehurst (1 mile south-west), Coldharbour (1 mile west) and Blackfen (1 mile north). Larger places within reach include London (9 miles north-west), City of Westminster (12 miles north-west), Marylebone (12 miles north-west), Kensington (13 miles west), St Pancras (11 miles north-west) and Shoreditch (10 miles north-west).
Near you in Longlands
In Longlands, that means homes and buildings near Waring Park, Chislehurst School for Girls and Ye Olde Black Horse Inn and the streets around them. For rail, the closest station is New Eltham station, roughly 0.8 miles north-west. Other landmarks nearby include Queen Mary's Hospital (1 mile south-east) and Greenwich Castle (5 miles north-west). Not far away are Summer Hill and The Tarn.
Landlord and commercial work in Longlands
We work for landlords and agents as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order.
In hotels, rooms out of use cost money, so the work can be planned room by room around your bookings where we can. We’ve worked in hotels as well as homes and businesses.
What we’re called out for in Longlands
Sealant on fascias and trims weathers like any outdoor joint. It goes hard, cracks and pulls away after some years.
Signs it’s time to call us include:
- Wet patches on the wall under a gutter joint
- Trim joints where the sealant has failed
- End caps that drip every time it rains
- Damp patches inside below a leaking gutter
For an older house near a landmark such as Christ Church, old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Comparing quotes
- How long to leave it before use
- What insurance they hold
- Who does the work, and how experienced they are
- Whether all the old sealant comes out first
When something else is needed
Honest advice matters more to us than a booking, so here’s what new sealant won’t do:
- Blocked downpipes
- Leaks from the roof rather than a joint
- Guttering that needs replacing
If you’re not sure, just phone 0345 464 0079 or email us and we’ll give you a straight answer.
What we seal
- Garage door frames
- Roofline trims
- Soffit joints
- uPVC fascias
- Gutter joints
- Gutter end caps