Greater London · England
Gutter, fascia & soffit sealing in Addington, Greater London
Our applicators work in Addington on sealing leaking gutter joints, end caps, fascias, soffits and roofline trims. Old material cut out, joints cleaned and sealed neatly and every job guaranteed for a year.
- Stop ends leaking at the end of a run
- Gaps along fascia and soffit joints
- Trim joints where the sealant has failed
About our gutter sealing in Addington
Failed sealant round a garage door frame lets rain blow in. We cut out the old sealant and reseal the frame with an exterior sealant. We work on gutter joints, roofline trims and gutter end caps, and common reasons people get in touch are leaking gutter joints and stop ends and internal damp traced to a gutter joint.
Working on the outside of a London home means planning access: shared paths, upper floors and parking. For a home in Addington, tell us how high the joints are and how to reach the back of the building.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Location
- Addington (CR0, CR2, BR4)
- Wider area
- Greater London
- Cover
- A year, on every job
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Walls and rooflines in Addington
With historic houses such as Addington Palace (about 0.4 miles west) nearby, there’s older building stock in the area around Addington as well as newer homes. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material. 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.
For site and facilities teams at buildings such as Applegarth Academy, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. If you let a flat or house near West Wickham station, a gutter joint that drips onto the wall can turn into a damp complaint, so it’s worth checking.
Addington is about 3 miles south-east of Ashburton, in Greater London. Addington gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. Our Greater London coverage runs to 764 places, Addington among them. For nearby work, see our London page (10 miles or so).
Every address in CR0, CR2 and BR4 is covered for gutter sealing. Streets in the area include Lodge Lane, Falconwood Road and Addington Village Road, and we cover them all. We also cover the places around Addington: Coney Hall (1 mile north), Forestdale (1 mile south), Spring Park (1 mile north), New Addington (1 mile south-east) and Selsdon (1 mile south-west). Larger places within reach include London (10 miles north), City of Westminster (12 miles north-west), Marylebone (12 miles north-west), Kensington (12 miles north-west), St Pancras (12 miles north) and Shoreditch (12 miles north).
Near you in Addington
Typical jobs here are in homes near Addington Park and John Ruskin College. Addington’s nearest station is West Wickham station, roughly 1.7 miles north-east of the centre. Other landmarks nearby include National Psychosis Unit (1.6 miles north) and St George's Walk (3.1 miles west). Not far away are Bramley Bank and Duppas Hill.
Work for landlords, hotels and businesses
Whether it’s one flat or a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance.
Signs you need gutter sealing in Addington
When a gutter sags, its joints open. Sealing will not hold if the gutter keeps dropping so the brackets need attention first.
Common reasons people contact us are:
- Damp on an inside wall under a dripping gutter
- Streaks down the brickwork from a leaking joint
- Leaking gutter joints and stop ends
- Cracked sealant along roofline trims
In the older streets around Church of St Mary, older walls, gutters and the joints where extensions meet them need a flexible sealant.
Comparing quotes
- What product goes in the joint
- Is VAT in the price?
- Which colour the sealant will be
- How the surfaces are prepared before sealing
How the visit works
There’s no need to move everything out, just the space around the work. We protect the rest, and the job takes a few hours, depending on the number of joints and the access in most cases. Many London jobs are in flats, so we come ready for stairs, narrow hallways and shared entrances. If the building has a concierge, managing agent or access rules, tell us when you book.
- We find where the water is coming from and check the gutter is sound.
- We remove the old sealant and clean the joint.
- The joint is dried before sealing.
- 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
- Tell us about any previous sealing or DIY attempts
- Tell us if parking is tricky
How to get a quote
Getting a quote is simple: tell us what needs doing and where. Photos by email help us understand the job, and we’ll come back to you with a quote.
Read more
Aftercare tips
Once the sealant has cured, a few habits help it last:
- Have sagging gutters refixed early
- Keep an eye out for wet patches below a joint
- Make sure downpipes are not blocked
- Deal with a drip before winter
While checking gutters, glance at the fascia joints too. A small split is quicker to put right.
A leaking stop end is best sealed before the wet months. A winter of drips can lead to damp patches inside.
Your questions about gutter sealing in Addington
Can parking be tricky for a visit in Addington?
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 you help a landlord with a rental near West Wickham station?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. Just ring 0345 464 0079 or drop us an email with the address and what needs doing, and we will give you a clear quote.
Where do you work from?
Mr Mastic is based in Crawley. We cover Addington and the rest of Greater London.
Do I need to be at home?
That depends on where the joints are. For work indoors, someone needs to let us in, while outside work can sometimes be arranged differently.
Can you fit new guttering?
That’s not something we do. Our work is sealing joints and replacement is a job for an installer.
Will you leave a mess?
Very little: the area around the joints is protected first, and we clear up the old sealant and our materials before we leave.
Can you quote for more than one area?
Of course. Combining jobs makes good use of the visit, so mention them when you ask for a quote.
Is it possible to stop a gutter joint dripping with sealant?
Yes, as long as the gutter itself is in good order. The joint is cleaned and dried first so the sealant bonds.
Should I try it myself first?
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
When it is not the sealant
Some problems need a builder, plumber or other trade rather than us:
- Leaks from the roof rather than a joint
- Cracked, split or warped gutter sections
- Blocked downpipes
If in doubt, call 0345 464 0079 or email us and we’ll say what we think.
Where we work in Addington
- uPVC fascias
- Soffit joints
- Gutter end caps
- Roofline trims
- Gutter joints
- Garage door frames
How the job changes by surface
Gutter end caps
We seal end caps from the inside where we can reach once clean and dry.
uPVC fascias
Gaps in fascias spoil the roofline. Sealing them closes the gap.