Greater London · England
Gutter, fascia & soffit sealing in Brentford, Greater London
Gutter sealing for Brentford 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
- Gaps along fascia and soffit joints
- Earlier gutter repairs that have peeled off
Gutter sealing for homes and businesses in Brentford
We work across Brentford on leaking gutter joints and roofline trims. Single-storey and low gutters are simple to reach and if it’s higher up, let us know and we’ll confirm what access is needed. If you have drips from gutter joints and end caps and old gutter sealant that has let go, we can help, whatever the surface.
Modern London flats rely on sealed movement joints and cladding joints. Period houses have different weak points, such as gutter joints, trims and the line where an extension meets the old wall.
All our work is covered by a one-year guarantee.
- Location
- Brentford (TW8, W3, W4, W5)
- Wider area
- Greater London
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
How to look after the new joints
A little care helps the new joints last. Our advice:
- Check fascia and soffit joints for gaps
- Watch for drips in a downpour
- Keep the gutters clear of debris
- Make sure downpipes aren’t blocked
Clear the gutters once or twice a year, so water drains away past the joints. Water left in a gutter tests every joint.
A drip from a gutter joint won’t stop on its own. Water keeps hitting the same part of the wall and that can cause damp inside.
Towns and villages near Brentford
Also in Brentford
When it isn’t the sealant
We’d rather tell you now than do work that won’t last, so here’s what sealant cannot put right:
- Problems with the roof covering
- Sagging gutters or broken brackets
- A gutter length that has split
If you are not sure, just ring 0345 464 0079 or send us an email and we will give you a straight answer.
Joints and surfaces we work on
- Garage door frames
- uPVC fascias
- Gutter end caps
- Roofline trims
- Soffit joints
- Gutter joints
Leave it or put it right?
If the problem is a blocked downpipe, sealing won’t help. We check the cause first and point you to the right trade if needed. In a flat in Brentford, failed sealant seldom stays inside your own four walls: water from a shower or window joint can reach the flat below, and gaps in fire-stopping matter to everyone in the building.
Combining jobs into one visit is generally more efficient than separate visits, so tell us about everything that needs sealing. We’ll give you a clear price for the lot.
Why choose Mr Mastic in Brentford
- ARBOMaster approved applicator
- Full insurance on every job
- Colour agreed with you before work begins
- A 12-month guarantee on all work
FAQs for Brentford
Can you do gutter sealing in Brentford?
Yes, Brentford is within the area we cover. We work across London and the South East. Just call 0345 464 0079 or drop us an email with a few details of the job.
Can parking be tricky for a visit in Brentford?
Parking in Brentford, as in most of London, takes a little planning: a visitor permit or a bay close to the door helps a lot, so mention what’s available when you book.
Do you replace gutters or fascias?
We do not replace gutters or fascias. If a gutter is broken or sagging, we will tell you so you can call the right trade.
Can landlords and businesses book you?
Yes, we do. Domestic, commercial and hotel work are all part of what we do, and we’re fully insured.
Can you do several jobs on one visit?
Yes, we can. Several rooms, windows or areas can go on one quote.
Do you clean gutters?
Only around the joints we seal because the joint must be clean. Cleaning the whole run is a separate job.
Is the work guaranteed?
Our 12-month guarantee covers every job, gutter and fascia work included.
I’m a tenant. Can you help?
We’re happy to deal with the tenant, landlord or agent. Get your landlord’s agreement first.
Can I do it myself?
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
A DIY attempt does not rule out a professional job. We remove it and do the joint properly, so just mention it when you contact us.
Surface by surface
Gutter end caps
End caps take the pressure of water running along the gutter. A failed seal makes them leak.
Soffit joints
We choose a sealant colour that suits the soffit.
Outside joints around Brentford
London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. With historic houses such as Kew Palace (about 0.5 miles south-east) nearby, there’s older building stock in the area around Brentford 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.
In the older streets around Congregational Church, older walls, gutters and the joints where extensions meet them need a flexible sealant. Managing a site like St Paul's CofE Primary School? Then its movement joints, gutters and trims need looking after like any other building’s.
Brentford is about 2 miles south of Ealing, in Greater London. Homes, rented property, offices and hotels in Brentford is covered for gutter sealing. The work is guaranteed for a year. Our area takes in 764 places across Greater London. For nearby work, see our London page.
Work in TW8, W3, W4 and W5 is quoted and booked the same way as anywhere else. Local streets include High Street, Market Place and New Road, all of which we cover. You will find Brentford on the A4 and A315, which makes it straightforward to reach with everything needed for gutter sealing. If you are just outside Brentford, we cover Brentford End (1 mile south-west), Northfields (1 mile north-west), Gillette Corner (1 mile west), Isleworth (2 miles south-west) and Spring Grove (2 miles west). Larger places within reach include London (9 miles east), City of Westminster (7 miles east), Marylebone (7 miles east), Kensington (4 miles east), St Pancras (8 miles east) and Shoreditch (10 miles east).
What’s near Brentford
We work in homes and buildings around Library for Iranian Studies, Brentford School for Girls and Kew College Prep, among other places. You’ll also find The Brook pub (within half a mile south-west) and Kew Green (0.7 miles south-east). There’s a railway station in Brentford itself: Brentford station. A little further out are Treaty Centre (3 miles south-west) and Musical Museum (0.5 miles east). Not far away are Kew Gardens Lake and Long Wood.
When to call us in Brentford
Stop ends take pressure from water running along the gutter. If the seal fails, water escapes at the end.
If you can see any of these, it’s time to have the joints looked at:
- Water running down the wall below the gutter
- Damp on an inside wall under a dripping gutter
- Earlier gutter repairs that have peeled off
- Dripping gutter ends
As a London address, Brentford can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
Questions to ask before booking
- What preparation is included
- What guarantee comes with the work
- What product goes in the joint
- How long to leave it before use
What happens on the day
There’s no need to move everything out, only the area right around the joints. Everything nearby is protected, and the job takes an hour or two for a few joints, longer for a full run in most cases. In Brentford, flats, stairs and shared entrances are part of the routine. If the building has a concierge, managing agent or access rules, tell us when you book.
- We look at the gutters, fascias and trims and agree the joints to seal.
- Each joint is cleaned and any old sealant removed.
- The joints are dried.
- We apply exterior or gutter sealant and finish it neatly.
- The joints are checked once sealed.
Before we arrive
- Tell us if parking is tricky
- Tell us about any water getting in
- Clear items away from the joints we are working on
Ask for a quote
There’s no standard price list. Instead, your job gets its own clear quote. To get started, phone 0345 464 0079 or email us.