Greater London · England
Seven Kings Window Mastic
Mastic around window and door frames, sills and patio doors for householders, landlords and businesses in Seven Kings. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Draughty joints inside around the window
- Gaps left after new windows were fitted
- Whistling draughts around closed windows
About our window mastic in Seven Kings
Behind a thin line of old mastic there’s sometimes a deep void. Packing it solid with sealant gives a joint that cannot flex, so we fit backing rod to set the right depth. The sealant then grips the two sides it should. We work on window sills, uPVC windows and aluminium frames, and the jobs we see most are leaking joints at the ends of sills and a bead that doesn’t match the frame.
London has a lot of flats and conversions, where windows are often on upper floors. In a converted house or block, the lease normally says who is responsible for the windows, so it’s worth checking before booking.
All of our work is guaranteed for twelve months.
- Place
- Seven Kings (IG3, IG2, IG1)
- Region
- Greater London
- Cover
- 12 months on all our work
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Surface by surface
Patio & French doors
Patio and French doors have the longest joints on most houses. Most leaks start at the bottom corners, so they get particular care.
uPVC windows
We clean the frame edge carefully so the plastic is not marked, then the sealant goes in between frame and wall and tooled smooth.
Questions from Seven Kings
Is Seven Kings in your area for window mastic?
Yes. Our work covers London and the South East, and Seven Kings is part of that. Just ring 0345 464 0079 or email us with a few details of the job, and we’ll give you a clear price.
Can you help a landlord with a rental near Seven Kings station?
Yes, we work for landlords and letting agents. You can phone 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before any work starts.
Do you hold any approvals?
Yes. We are approved under the ARBOMaster scheme.
Do you take out the old sealant first?
Yes, always, and completely. New silicone does not stick to old silicone, so any old material comes out before anything new goes in.
What do you need from me for a quote?
A short description and the location. If we need more, we will ask.
How long should I leave it?
Many sealants skin over quickly but take longer to cure fully. We’ll tell you how long to leave the joint before we leave.
Can you seal over the old sealant?
No, it will not last. It can look neat for a few weeks, but the new bead soon lifts. The old sealant has to come out completely.
What sealant do you use?
Each joint gets the product that suits it. Movement, water and weather all affect the choice.
Landlords, agents and businesses in Seven Kings
Whether it’s one flat or a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a 12-month guarantee.
Hotels need rooms back in use, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
Leave it or put it right?
A cracked joint around a frame lets rain into 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, so a small leak from tired sealant can mean a neighbour’s ceiling and a lot of disruption. Putting it right early is much less trouble.
Commercial jobs are quoted on the same basis as homes: the amount of work, how we reach it and what it needs, plus any working-time requirements on site. Ask us for a quote and we will go through it with you.
Why book with us
- Fully insured
- Rated 4.9 stars on Google
- Trusted Arbo and Everbuild sealants
- Domestic, commercial and hotel work
Take a look at how sealant jobs are priced or customer reviews.
When something else is needed
We won’t take on work that will not last, so here’s what sealant cannot put right:
- Rotten timber, which needs a joiner first
- A sash or casement that will not close properly
- Damp problems in the wall away from the window
Not sure which it is? You can ring 0345 464 0079 or email us and we’ll tell you honestly.
What we seal
- Patio & French doors
- Window sills
- uPVC windows
- Aluminium frames
- Timber windows & doors
- Composite doors
Nearby places to Seven Kings
Also in Seven Kings
What affects the quote in Seven Kings
For a quick quote, just ask. The main things that affect it are:
- How easy the joints are to reach
- Mould in or behind the old joints
- When we can work, for business premises
- The type of sealant required
Leaving a failed joint usually makes the job bigger, not smaller, as water and mould keep getting in. If you’re not sure whether it needs doing, ring 0345 464 0079 or send us an email for an honest opinion and a quote.
What to tell us for a quote
You do not need to know the technical terms. It helps if you can tell us:
- The problem you’ve noticed
- The type of property
- If someone has resealed it before
- The address or postcode of the job
Every job is quoted individually. Simply phone 0345 464 0079 or drop us an email and describe the job and send photos if you have them.
The process
All our tools and materials come with us in the van. Once we have agreed what’s being done, we protect the area and start. Most jobs take a few hours for a few frames, or a day or more for a whole house. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Seven Kings. A visitor permit or a nearby bay makes the visit run more smoothly.
- We start by checking each window and door with you.
- The old mastic is cut out and the surfaces cleaned back.
- Deep gaps are filled with backing rod to set the depth.
- We apply a weatherproof sealant to match the frame and tool it neatly.
- Finally we tidy up and check each joint.
How to prepare
- Tell us about access, such as stairs, a lift or high-level joints
- Mention any sign-in or site rules at work premises
- Keep pets and children clear of the area while we work
Ask for a quote
For window mastic in Seven Kings, ring 0345 464 0079 or email us. Tell us what the problem is and where, and you will get a clear quote before work begins.
Related advice
Do you need window mastic in Seven Kings?
Joints that are too thin or too deep fail early. A thin smear across a wide gap has nothing to it, while a joint packed solid can’t stretch. Backing rod sets the right depth.
Signs it’s time to call us include:
- Cold air getting in at the frame edge
- Rain getting in at the frame or under the sill
- Old mastic that has gone black or come away
- Gaps between the frame and the inside reveal
Schools such as Downshall Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s.
What to look for in a quote
- Whether VAT is included
- Whether they seal over old material or remove it
- How long the guarantee is
- What happens if they find a problem under the old sealant
What window mastic looks like in Seven Kings
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 Valentines Mansion (about 1.4 miles west) nearby, there’s older building stock in the area around Seven Kings as well as newer homes. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
If you let a flat or house near Seven Kings station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first. Seven Kings is in London, so parking needs planning: let us know about parking bays, permits or a driveway.
Seven Kings is about 2 miles north of Barking, in Greater London. Wherever you are in the IG3 postcode area, we cover window mastic for homes and businesses. Across Greater London, we cover 764 places, Seven Kings among them. There’s also a page for London, roughly 10 miles from Seven Kings.
Here we cover the IG3, IG2 and IG1 postcode area for window mastic. If you need window mastic at a property on New Road, Lynn Road and High Road or anywhere close by, our applicators can take on the job. Seven Kings is on the A118, so it’s easy for us to get to. Other places close to Seven Kings include Newbury Park (1 mile north-west), Ilford (1 mile south-west), Gants Hill (1 mile north-west), Barkingside (1 mile north-west) and Cranbrook (1 mile west). Larger places within reach include London (10 miles south-west), City of Westminster (11 miles west), Marylebone (11 miles west), Kensington (14 miles west), St Pancras (10 miles west) and Shoreditch (8 miles west).
Landmarks near Seven Kings
We work in homes and buildings around Palmer Catholic Academy and South Park. Seven Kings has its own railway station: Seven Kings station. Well-known places in the area include The Brewery (3.6 miles east) and Redbridge Museum (1.2 miles south-west). Open spaces near Seven Kings include Hainault Lodge and Hollow Pond.