Greater London · England
Gutter, fascia & soffit sealing in Forest Hill, Greater London
Gutter sealing for Forest Hill and the surrounding area: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Garage door frames letting rain in
- Water dripping where gutter sections meet
- Cracked sealant along roofline trims
Different surfaces, different methods
Garage door frames
The joint between frame and brickwork moves and weathers. An exterior sealant suits them.
uPVC fascias
Fascia board joints can open up. We seal them neatly with a matching sealant where possible.
How we handle gutter sealing in Forest Hill
Garage door frames let rain in when the sealant around them fails. We cut out the old sealant and reseal the frame with an exterior sealant. If you are dealing with old sealant on roofline trims that has split and open joints in fascias and soffits, we can help.
Working on the outside of a London home means planning access: shared paths, upper floors and parking. For a home in Forest Hill, tell us how high the joints are and how to reach the back of the building.
A 12-month guarantee comes with the work, just as it does everywhere we cover.
- Where
- Forest Hill (SE23, SE22, SE26)
- Wider area
- Greater London
- Cover
- One year on every job
- Price
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
DIY sealant or a professional job?
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
Work for landlords, hotels and businesses
In hotels, rooms out of use cost money, so we plan the work room by room. We’ve worked in hotels as well as homes and businesses.
Whether it’s one flat or a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a one-year guarantee.
Gutter sealing in Forest Hill: local notes
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. 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 Honor Oak Christian Fellowship Centre, older walls, gutters and the joints where extensions meet them need a flexible sealant. Forest Hill is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
Forest Hill is about 2 miles south-east of East Dulwich, in Greater London. Homes, rented property, offices and hotels in Forest Hill can book us for gutter sealing. The work is guaranteed for a year. Across Greater London, we cover 764 places, Forest Hill among them.
Here we cover the SE23, SE22 and SE26 postcode area for gutter sealing. Whether your property is on Ewart Road, London Road and Rojack Road or a nearby road, we can help. We also cover the places around Forest Hill: Honor Oak (1 mile north), Perry Vale (1 mile south-east), Brockley (1 mile north-east), Crofton Park (1 mile north-east) and Dulwich (1 mile west). Within a short drive, we also cover London (4 miles north-west), City of Westminster (6 miles north-west), Marylebone (6 miles north-west), Kensington (7 miles north-west), St Pancras (6 miles north-west) and Shoreditch (6 miles north).
Near you in Forest Hill
We work in homes and buildings around Allenby Tutorial Trust, Capitol Cinema pub and Harris Girls' Academy East Dulwich and the streets around them. Forest Hill’s nearest station is Honor Oak Park station, about 0.5 miles north-east. A little further out are Greenwich Castle (3.1 miles north-east) and Horniman Museum and Gardens (0.5 miles south-west). Open spaces near Forest Hill include One Tree Hill and Knight's Hill.
What we can’t put right
We’d rather tell you now than do work that won’t last, so these are the limits:
- Problems with the roof covering
- Water backing up from a blocked pipe
- Guttering that needs replacing
Not sure which it is? You can phone 0345 464 0079 or email us and we will tell you honestly.
Surfaces we seal
- Soffit joints
- Roofline trims
- Garage door frames
- Gutter joints
- uPVC fascias
- Gutter end caps
Also near Forest Hill
Other services in Forest Hill
Forest Hill: your questions answered
Can you help a landlord with a rental near Honor Oak Park station?
Yes, we work for landlords and agents. You can phone 0345 464 0079 or email us with the address and a few details, and we will give you a fixed price before work begins.
Do you cover Forest Hill for gutter sealing?
Yes, Forest Hill is within the area we cover. Our work covers London and the South East. You can ring 0345 464 0079 or send us an email and let us know what needs doing.
How long does the job take?
It depends on the size of the job, but as a guide it takes a few hours, depending on the number of joints and the access. We will tell you when we quote.
How much does gutter sealing cost in Forest Hill?
Every job is different, so each one gets its own quote. To get one, phone 0345 464 0079 or email us with a short description of the job.
Do you take out the old sealant first?
Always. Sealing over old sealant is the main reason resealing fails early, so we never do it.
Do you have insurance?
Yes. We are fully insured, and we can confirm the details when we quote.
Do you seal gaps in fascias and soffits?
Yes. We seal open joints along fascias and soffits in a matching colour.
How long should I leave it?
It depends on the product and the temperature. We tell you how long to leave it before we go.
How the visit works
We bring everything the job needs with us. Once we have agreed what’s being done, we protect the area and start. It normally takes anything from an hour or two to a few hours. For a job in Forest Hill, parking and access are the things to plan: tell us about permits, visitor bays or off-street space, which floor we’re working on and whether there’s a lift.
- We find where the water is coming from and check the gutter is sound.
- We remove the old sealant and clean the joint.
- We dry the joint so the new sealant can bond.
- A gutter sealant is applied to the joint.
- The gutter is checked and debris around the joints cleared.
Before we arrive
- Tell us about any water getting in
- Try not to wet indoor joints just before the visit
- Clear items away from the joints we’re working on
How to get a quote
Call for a quick quote, or email us if that is easier. Describe what needs sealing and we will explain what’s involved.
Related advice
Common problems we fix in Forest Hill
Gutter joints depend on seals that wear out. Temperature changes make gutters move, and old seals crack or slip.
People normally contact us after spotting something like this:
- Streaks down the brickwork from a leaking joint
- Stop ends leaking at the end of a run
- Trim joints where the sealant has failed
- Failed sealant on a garage door frame
If you look after a building such as Fairlawn Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Questions to ask before you book
- What the cure time is
- Whether all the old sealant comes out first
- Are they insured?
- What preparation is included
Why act early in Forest Hill
New gutters cost far more than a few resealed joints. Where the gutter is in good order and only a joint leaks, resealing is the sensible fix. If it’s broken or sagging, a gutter installer needs to look. Damp from a failed joint spreads quietly in older London brickwork and timber, and by the time it shows on a wall or ceiling in Forest Hill, the repair is bigger than the sealant job would have been.
Some things make a job bigger or smaller: the old material and how easily it comes out, any mould to treat, and whether we need extra access for height. We take all of that into account in your quote.
Why book with us
- We never seal over old sealant
- Every job guaranteed for a year
- Quality sealants from Arbo and Everbuild
- 20+ years of sealant experience
See what affects the cost or our reviews.