Greater London · England
Gutter Sealing in Penge
Sealing leaking gutter joints, end caps, fascias, soffits and roofline trims for Penge, backed by a 12-month guarantee. Call for a quick quote.
- End caps that drip every time it rains
- Damp patches inside below a leaking gutter
- Earlier gutter repairs that have peeled off
Penge: your questions answered
Can you do gutter sealing in Penge?
Yes. We work across London and the South East, and Penge is part of that. Just ring 0345 464 0079 or send us an email with a few details of the job, and we’ll send you a clear quote.
Do you work for landlords with property near Penge West station?
Yes, landlords and agents are among the people we work for. Just call 0345 464 0079 or send us an email with the address and what needs doing, and we will give you a clear price.
Can I choose the sealant colour?
In most cases you can choose. We’ll explain which colours are available and agree one before any work starts.
Are you insured?
Yes, we are fully insured.
Where do you work from?
Mr Mastic is based in Crawley. We cover Penge and the rest of Greater London, along with the rest of our area.
Can I add another job to the visit?
Yes. Just list everything you need and we will quote it together.
How much does gutter sealing cost in Penge?
It depends on the job, so we quote each one individually. For a quick quote, call 0345 464 0079 or email us with a short description of the job.
Will you clear out my gutters?
We clear debris around the joints we’re sealing. Full gutter cleaning is a separate job.
Gutter sealing in Penge
Across Penge, 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 will confirm what access is needed. Typical jobs include drips from gutter joints and end caps and damp patches inside below a leaking gutter, on garage door frames, uPVC fascias and roofline trims.
Working on the outside of a London home means planning access: shared paths, upper floors and parking. In Penge, joints up high may need ladders or other access, which is worth talking through when you book.
Every job is covered by our one-year guarantee.
- Location
- Penge (SE20, SE19, SE26)
- Wider area
- Greater London
- Cover
- One year on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Towns and villages near Penge
What else we do in Penge
For landlords and businesses
For anyone letting property in or around Penge, jobs at different addresses can go on one quote. Send us the addresses and the work at each, and pictures by email help.
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
What gutter sealing looks like in Penge
London and the South East are among 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 Kingswood House (about 1.4 miles north-west) nearby, there’s older building stock in the area around Penge as well as newer homes. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth.
As a London address, Penge can be tricky for parking: tell us about permits, visitor bays or off-street space when you book. Rented homes near Penge West station change hands often, and a gutter joint that drips onto the wall can turn into a damp complaint, so it’s worth checking. If you look after a building such as Harris Primary Academy Crystal Palace, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Penge is about 1 mile west of Beckenham, in Greater London. Wherever you are in the SE20 postcode area, our applicators can take on gutter sealing. Across Greater London, we cover 764 places, Penge among them. London is on our list too, around 6 miles away.
Jobs for gutter sealing in SE20, SE19 and SE26 works the same way as everywhere else we cover. If you need gutter sealing at a property on High Street, Anerley Station Road and Station Road or anywhere close by, we can help. Penge is on the A234, so it’s easy for us to get to. We also cover the places around Penge: Anerley (1 mile west), Crystal Palace (1 mile north-west), Sydenham (1 mile north), Gipsy Hill (1 mile north-west) and Upper Norwood (1 mile west). Further out, we also cover London (6 miles north), City of Westminster (8 miles north-west), Marylebone (8 miles north-west), Kensington (8 miles north-west), St Pancras (8 miles north) and Shoreditch (8 miles north).
Near you in Penge
Around Penge, our work takes us to homes and buildings near Crystal Palace School, Crooked Billet pub and Crystal Palace Dinosaurs. Penge has its own railway station: Penge West station. Well-known places in the area include St Christopher's Hospice (0.5 miles north) and Crystal Palace Museum (0.8 miles north-west). For a walk, there’s Dulwich Upper Wood and Knight's Hill.
How to look after the new joints
Aftercare is simple:
- Have sagging gutters refixed early
- Don’t lean ladders against the gutter itself
- Glance at the soffit joints now and then
- Keep downpipes clear
While checking gutters, glance at the fascia joints too. A small split is quicker to put right.
A leaking garage frame lets water reach stored items. Resealing the frame is a quick job while the frame is sound.
Why it’s worth doing now in Penge
If the problem is a blocked downpipe, sealing will not help. We check the cause first and tell you if something else is needed. 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.
What you pay reflects the work, not guesswork. That’s why we ask a few questions first and send you a clear quote before any work starts.
Why book with us
- Every job guaranteed for a year
- Tidy, careful work
- Arbo and Everbuild products
- A sealant colour to suit the surroundings
Take a look at what affects the cost and our reviews.
Different surfaces, different methods
uPVC fascias
Joints between fascia boards can open over time. We seal them neatly in a suitable colour.
Soffit joints
Soffits sit under the eaves, where joints can open up. They’re sealed to tidy the line.
Quotes for gutter sealing in Penge
You’ll get a clear quote before any work starts. It’s based on:
- The old material and how stubborn it is
- Any mould that needs treating
- How easy the joints are to reach
- Working hours on commercial sites
What it costs depends on the size of the job, how hard the old material is to remove and how easy the joints are to reach. We give a clear quote before we start, so you know where you stand.
What we need to know
There’s no need for technical detail. Just tell us:
- Any previous sealing or DIY work
- Pictures of the joints, sent by email
- Any access issues, like height or stairs
- The type of property
If you are in Penge and need gutter sealing, ring 0345 464 0079 or email us. Tell us what the problem is and where, and you’ll get a clear quote before any work starts.
What we do, step by step
There’s no need to move everything out before we come, only the area right around the joints. Everything nearby is protected, and the work takes a few hours, depending on the number of joints and the access for a typical job. In Penge, as in most of London, parking needs a little planning. It helps if you can point us to a visitor permit or a bay close to the door.
- We start by tracing the leak and checking the gutter itself is sound.
- The joint or trim is cleaned out and old sealant removed.
- We make sure the joint is dry before sealing.
- An exterior or gutter sealant is applied to the joint.
- We look along the gutter and clear debris around the joints.
Before we arrive
- For business premises, tell us about site rules or sign-in
- Where the joints are inside, avoid wetting them before we arrive
- Tell us about any previous sealing or DIY attempts
Getting a quote
Getting a quote is simple: let us know the job and the location, and roughly how big it is. A few photos by email make the job easier to understand.
Related advice
DIY sealant or a professional job?
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
If you’ve already had a go yourself, that’s fine. We remove it and do the joint properly.