Greater London · England
Gutter Sealing in New Addington
Gutter sealing for New Addington and the surrounding area: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- Streaks down the brickwork from a leaking joint
- Open joints in fascias and soffits
- Dripping gutter ends
New Addington questions
Do you cover New Addington for gutter sealing?
Yes, New Addington is within the area we cover. Our work covers London and the South East. You can phone 0345 464 0079 or drop us an email and let us know what needs doing, and we will send you a clear quote.
Can parking be tricky for a visit in New Addington?
London parking needs a little planning, so let us know about permits, bays or a driveway when you book. The visit is then planned around what’s available.
Will sealant fix a dripping gutter joint?
Yes, as long as the gutter itself is in good order. We clean and dry the joint before sealing so the sealant bonds.
Will the old sealant be removed?
Yes. All of the old material is cut out and the joint cleaned before resealing.
Where do you work from?
We work from Crawley. Our applicators cover New Addington, along with the rest of our area.
Can you quote for more than one area?
Yes. Tell us about everything you’d like done and we will quote it together.
Do you have insurance?
Yes. Mr Mastic is fully insured.
Will you leave a mess?
Tidy work is part of the job. Nearby surfaces are protected, and we clear up when we are done.
About our gutter sealing in New Addington
For gutter sealant to hold, the joint has to be clean and dry. That’s why we take out the old sealant and dirt first, then dry the joint before sealing. We’re often asked to deal with failed sealant on a garage door frame and cracked sealant along roofline trims, on roofline trims, uPVC fascias and gutter joints.
Outside work in London starts with access: side passages, upper floors and where to park. In New Addington, joints up high may need ladders or other access, which is worth talking through when you book.
Each job carries a 12-month guarantee, large or small.
- Location
- New Addington (CR0, CR9)
- Wider area
- Greater London
- Guarantee
- One year on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
When it isn’t the sealant
In fairness, there are a few things sealant won’t fix:
- Problems with the roof covering
- Fascias that need replacing
- Cracked, split or warped gutter sections
If you are not sure, just call 0345 464 0079 or email us and we’ll give you a straight answer.
What we seal
- Soffit joints
- Gutter joints
- Gutter end caps
- Roofline trims
- uPVC fascias
- Garage door frames
Leave it or put it right?
Leaving a leaking end cap can send water down the wall all winter. Resealing it is a quick job compared with treating damp later. In a London flat, a failed joint rarely stays your problem alone: water from a shower or window joint can reach the flat below, and gaps in fire-stopping matter to everyone in the building.
Instead of a standard rate, we price the job in front of us: how many joints, what’s in them now and how we reach them. You’ll know the price before we begin.
Why us?
- Anti-fungal sanitary silicone in wet areas
- Rated 4.9 stars on Google
- Quality sealants from Arbo and Everbuild
- We never seal over old sealant
Take a look at how sealant jobs are priced and customer reviews.
Towns and villages near New Addington
What else we do in New Addington
How to look after the new joints
After the cure time, these simple habits help:
- Check the gutters during heavy rain
- Clear leaves and moss from the gutters
- Glance at the soffit joints now and then
- Have sagging gutters refixed early
Keep downpipes clear so the gutter can drain. Blockages push water back along the gutter.
Split sealant on fascias and trims lets water in behind. Resealing early protects the boards and the wall below.
DIY sealant or a professional job?
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
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.
Landlords, agents and businesses in New Addington
We also work for property managers and facilities teams. Several sites can be quoted together.
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
What we are called out for in New Addington
Gutter joints rely on seals that age. Temperature changes make gutters move, and old seals crack or slip.
People normally contact us when they notice something like this:
- Open joints in fascias and soffits
- Internal damp traced to a gutter joint
- Earlier gutter repairs that have peeled off
- Trim joints where the sealant has failed
Schools such as Rowdown Primary School are buildings too, and larger buildings have long runs of movement joint that eventually need resealing.
Before booking anyone
- How long the guarantee is
- How the colour is chosen
- What the cure time is
- What insurance they hold
What happens on the day
When we arrive, we start by going over the job with you. We protect the surfaces around the joints before any work begins. Most jobs take an hour or two for a few joints, longer for a full run. For a job in New Addington, parking and access are the things to plan: let us know about parking, the floor we will be working on and any lift or shared entrance.
- First, we find the drip and check the gutter is not cracked or sagging.
- The joint or trim is cleaned out and old sealant removed.
- The joint is dried, because sealant will not bond to a wet surface.
- We seal the joint with a sealant made for gutters and outdoor use.
- We look along the gutter and clear debris around the joints.
Preparing for the visit
- Let us know about earlier repairs to the joints
- Keep children and pets away from the work area
- Move anything stored near the joints
How to get a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we’ll talk you through what we’d do. When it suits you, call 0345 464 0079 or email us.
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Walls and rooflines in New Addington
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. With historic houses such as Addington Palace (about 1.5 miles north-west) nearby, there’s older building stock in the area around New Addington as well as newer homes. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth.
As a London address, New Addington can be tricky for parking: tell us about permits, visitor bays or off-street space when you book. In the older streets around St Edward King and Confessor, an extension built onto an older house moves differently, and the joint between them takes the strain.
New Addington is about 4 miles south-east of Croydon, in Greater London. If you need gutter sealing in New Addington, please ring 0345 464 0079 or drop us an email for a quick quote. We’re based in Crawley and cover Greater London, New Addington included. New Addington is one of 764 places in Greater London we cover. We also work in London, about 11 miles from New Addington.
Work in CR0 and CR9 is quoted and booked the same way as anywhere else. That includes homes and businesses on Bothwell Road, Windham Avenue and Gascoigne Road and the roads around them. Neighbouring places we cover for gutter sealing include Forestdale (1 mile west), Fickleshole (1 mile south), Addington (1 mile north-west), Farleigh (1 mile south-west) and Selsdon (2 miles west). Within a short drive, we also cover London (11 miles north), City of Westminster (13 miles north-west), Marylebone (13 miles north-west), Kensington (14 miles north-west), St Pancras (13 miles north) and Shoreditch (13 miles north).
What’s near New Addington
Typical jobs here are in homes near Meridian High School and Addington Vale. The nearest railway station is Hayes (Kent) station, about 2.6 miles north-east of the centre. A little further out are Warlingham Park Hospital (1.8 miles south) and Bethlem Museum of the Mind (3.3 miles north-east). Not far away are Nore Hill and Hutchinson's Bank.