Greater London · England
Goodmayes Window Mastic
Window and door frames in Goodmayes need attention? We remove the old material, prepare the joints and seal them properly, with a one-year guarantee.
- Leaking joints at the ends of sills
- Rain getting in at the frame or under the sill
- Gaps left after new windows were fitted
Different surfaces, different methods
uPVC windows
Some uPVC windows were sealed at fitting with a quick bead that never bonded. It comes out, deep gaps get backing rod and the joint is resealed.
Aluminium frames
Aluminium moves with heat, and the frames are often slimmer than uPVC. A neat, narrow bead in a colour to match keeps the clean look.
Window mastic in Goodmayes
Frames and walls do not move together. Plastic and aluminium frames move with the temperature, while masonry stays fairly still. That is why the joint needs a flexible, low-modulus sealant rather than something rigid. If you’re dealing with gaps between the frame and the inside reveal and untidy mastic left by window fitters, we can help, on window sills, aluminium frames and patio & French doors alike.
London homes have every kind of window, from timber sashes in period terraces to aluminium and uPVC in newer blocks. The mastic around them dries out and cracks with age, letting in draughts and water.
All our work comes with a one-year guarantee, wherever you are in Greater London.
- Place
- Goodmayes (IG3, RM8, RM6)
- Wider area
- Greater London
- Guarantee
- A year, on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
How we quote for window mastic
Your quote is based on your job. We take into account:
- Whether the work is at height
- The amount of work
- Any working-time requirements on site
- The old material and how stubborn it is
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you are not sure whether it needs doing, phone 0345 464 0079 or send us an email and we’ll give you an honest view and a quote.
What we need to know
To make quoting easier, let us know:
- How we’d reach the joints
- The problem you’ve noticed
- Whether it has been sealed before
- Whether it’s a home or a business
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is, and email photos if that is easy.
Goodmayes: your questions answered
Can you do window mastic in Goodmayes?
Yes. We work across London and the South East, and Goodmayes is part of that. 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 Goodmayes?
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.
Does someone need to be in?
That depends on where the joints are. For work indoors, someone needs to let us in.
Do you hold any approvals?
Yes. We are ARBOMaster approved, the scheme for applicators of Arbo sealants.
Can new window sealant be painted?
It depends on the sealant. Silicone is not paintable, but some hybrid sealants are. Mention any painting plans before we start.
What does window mastic cost?
It depends on the job, so we quote each one individually. To get one, phone 0345 464 0079 or send us an email with a short description of the job.
Can you reach windows above the ground floor?
Yes, where it’s safe. For high or awkward windows, we will tell you what access is needed.
Is it messy?
No. The area is protected while we work and cleaned up afterwards.
Can I do it myself?
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly, so just mention it when you contact us.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
Places near Goodmayes
Also in Goodmayes
Signs you need window mastic in Goodmayes
Every frame moves through the day. Sun on a frame makes it expand, and it contracts again overnight, while the brick or render around it hardly moves. If the sealant can’t stretch, it splits.
Most people get in touch after spotting something like this:
- Gaps between the frame and the inside reveal
- Draughts coming in around windows and doors
- A bead that doesn’t match the frame
- Gaps where the sill meets the wall
As a London address, Goodmayes can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
What your quote should include
- Whether they’re fully insured
- What happens if the job turns out different
- How the surfaces are prepared before sealing
- What guarantee comes with the work
How the visit works
We work through the job in order: protection first, then preparation, sealing and a tidy-up. For most jobs that takes anything from an hour or two to a full day, depending on how many frames there are. In Goodmayes, 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.
- First, we go round the frames with you and agree the list.
- We remove the old mastic and clean the frame edge and wall.
- Where the gap is deep, backing rod goes in first.
- A flexible exterior sealant is applied in a colour to suit the frame.
- We tool each bead neatly and check every joint is closed.
Getting ready for the visit
- Let us know if you’ve seen damp or leaks
- Mention any tricky access
- Mention if the joints have been sealed before
Ask for a quote
For window mastic in Goodmayes, phone 0345 464 0079 or send us an email. Tell us what the problem is and where, and you will get a clear quote before work begins.
Advice
Goodmayes homes and the weather
Historic houses like Eastbury Manor House (about 2.1 miles south) are a reminder that the area around Goodmayes has older buildings as well as new. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic. 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.
Rented homes near Goodmayes station change hands often, and sound mastic around windows and doors keeps out the draughts and damp that tenants notice first. For site and facilities teams at buildings such as Goodmayes Primary School, the mastic around its windows and doors needs looking after like any other building’s.
Goodmayes is about 2 miles north of Barking, in Greater London. Jobs in Goodmayes get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Goodmayes is one of 764 towns and villages in Greater London where we work. We also work in London, around 10 miles away.
Jobs for window mastic in IG3, RM8 and RM6 works the same way as everywhere else we cover. Whether your property is on High Road, Green Lane and Essex Road or a nearby road, our applicators can take on the job. You’ll find Goodmayes on the A1083, so it’s easy for us to get to with everything needed for window mastic. We also cover Little Heath (1 mile north), Aldborough Hatch (1 mile north), Chadwell Heath (2 miles north-east), Becontree (2 miles south-east) and Becontree Heath (2 miles east). Further out, we also cover London (10 miles south-west), City of Westminster (12 miles west), Marylebone (12 miles west), Kensington (14 miles west), St Pancras (10 miles west) and Shoreditch (9 miles west).
Around Goodmayes
Around Goodmayes, our work takes us to homes and buildings near The Eva Hart pub, South Park and Mayfield School and the streets around them. There’s a railway station in Goodmayes itself: Goodmayes station. A little further out are Redbridge Museum (1.7 miles west) and Goodmayes Hospital (0.9 miles north). Open spaces near Goodmayes include Hollow Pond and Scrattons Eco Park.
Landlord and commercial work in Goodmayes
Letting agents and landlords in Goodmayes can book us as well as householders. Resealing between tenancies keeps a property looking cared for.
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
Leave it or put it right?
Once mastic fails, rain can get between the frame and the wall. Over time that can mean damp patches, damaged plaster and rotting timber. A reseal is a much smaller job. Converted houses in London often have a bathroom above someone else’s living room, and a slow leak from a failed seal can end up in the flat below. Putting it right early is much less trouble.
What you pay reflects the work, not a rough estimate. That is why we ask about the job first and give you a clear quote before we start.
Why us?
- More than 20 years in sealant work
- Anti-fungal sanitary silicone in wet areas
- Tidy, careful work
- Old sealant always removed completely