Greater London · England
Seven Sisters Glazing Silicone
Glazing joints in Seven Sisters need attention? We cut out the old, prepare the joints and apply the right sealant.
- Leaks where conservatory glass meets the frame
- Rooflight joints letting water in
- New silicone smeared over old sealant
Questions from Seven Sisters
I let a flat near Seven Sisters station. Can you help?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. You can phone 0345 464 0079 or send us an email with the details for a clear quote.
Is parking an issue for glazing silicone in Seven Sisters?
In much of London, parking needs planning: a visitor permit or a bay close to the door helps a lot.
Can you replace a misted double-glazed unit?
We do not replace glass. We look after the sealant joints, and we’ll tell you if a unit looks like it has failed.
Where is Mr Mastic based?
Our base is in Crawley, and we work across South East England, London and Scotland.
What sealant do you use on glazing?
We use a neutral-cure glazing silicone that suits the glass and frame. Shower screens get anti-fungal silicone.
Should I try DIY first?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional, while a short indoor joint may be within reach.
Can you do several jobs on one visit?
Yes. Just list everything you need and we’ll quote it together.
Will you leave a mess?
We keep the work tidy. Nearby surfaces are protected.
About our glazing silicone in Seven Sisters
Frameless shower screens rely on sealant to keep water in. Leaks generally come from the wall joint or the tray joint, and we reseal both. If you have new silicone smeared over old sealant and leaking glazing joints on a rooflight, we can help, on shower screens, conservatory frames and rooflights alike.
London has a lot of flats and conversions, where windows are often on upper floors. In a converted house or block, the lease generally says who is responsible for the windows, so it’s worth checking before booking, and access in Seven Sisters is something to talk through when you book.
The work is guaranteed for twelve months. If something isn’t right with it in that time, tell us and we will put it right.
- Location
- Seven Sisters (N15, N17, N16)
- Region
- Greater London
- Guarantee
- One year on every job
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Towns and villages near Seven Sisters
What else we do in Seven Sisters
Signs you need glazing silicone in Seven Sisters
Using a sealant not made for glass causes many failures. Not every silicone sticks properly to glass, and acetoxy types can attack some frame materials.
Most people get in touch when they notice something like this:
- Failed sealant around rooflight glass
- Stained, discoloured glazing silicone
- Split or lifting silicone on glass
- Water tracking down the inner face of the glass
Letting a property close to Seven Sisters station? Then a shower screen or conservatory joint that leaks is easier to reseal while the property is empty.
Questions to ask before you book
- Who turns up on the day
- Are they insured?
- What preparation is included
- What the cure time is
Frames and glazing around Seven Sisters
Historic houses like Bruce Castle (about 1.2 miles north) are a reminder that the area around Seven Sisters has older buildings as well as new. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic. In a converted house or block, who looks after the windows depends on the lease, so it’s worth checking before booking.
As a London address, Seven Sisters can be tricky for parking: let us know about parking bays, permits or a driveway. Managing a site like Earlsmead Primary School? Then the mastic around its windows and doors needs looking after like any other building’s.
Seven Sisters is about 2 miles west of Walthamstow, in Greater London. From the centre of Seven Sisters to the outskirts, glazing silicone is available for homes and businesses alike. Across Greater London, we cover 764 places, Seven Sisters among them. London is on our list too, around 6 miles away.
Every address in N15, N17 and N16 is within our area for glazing silicone, from the main roads to the quietest streets. You will find streets such as Ida Road, Elmar Road and Grove Road, all of which we cover. Neighbouring places we cover for glazing silicone include South Tottenham (1 mile north), Tottenham Green (1 mile north), St Ann's (1 mile west), Tottenham Hale (1 mile north-east) and West Green (1 mile west). We also work in nearby towns such as London (6 miles south), City of Westminster (6 miles south-west), Marylebone (5 miles south-west), Kensington (8 miles south-west), St Pancras (4 miles south-west) and Shoreditch (4 miles south).
What’s near Seven Sisters
Around Seven Sisters, our work takes us to homes and buildings near No.8 Seven Sisters pub, Ada College and Chestnuts Park. Nearby too are Gladesmore Community School (within half a mile east) and Church of St Andrew (0.8 miles south). There’s a railway station in Seven Sisters itself: Seven Sisters station. Nearby you’ll also find Montfichet's Tower (4.9 miles south) and The Mall Wood Green (1.7 miles north-west). Open spaces near Seven Sisters include Highgate Hill and Woodberry Wetlands.
What happens on the day
Once we are on site, we compare the joints with what we discussed. If anything is different, we explain it before carrying on. After that, the work takes anything from an hour or two to most of a day, depending on the size of the job. In Seven Sisters, as in most of London, parking needs a little planning. A visitor permit or a nearby bay makes the visit run more smoothly.
- We trace the leak and confirm it’s a sealant joint.
- The failed silicone is cut out without marking the glass or frame.
- We clean the glass and frame so the new silicone bonds.
- We lay the new bead and tool it smooth.
- We check the finished joints and test with water where it’s safe.
Preparing for the visit
- For indoor joints, keep the area dry beforehand if you can
- Mention any tricky access
- Mention any parking rules near the property
Get a quote
We do not publish a price list, as no two jobs are quite the same. Instead, we give you a clear price for your job. To get started, phone 0345 464 0079 or drop us an email.
Read more
Why deal with it now?
A leaking joint won’t fix itself. Water can damage frames, walls, flooring and furniture so early action saves a bigger repair. 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.
Leaving a failed joint generally makes the job bigger, not smaller. If you’re not sure whether it needs doing, ring 0345 464 0079 or drop us an email and we’ll give you an honest view and a quote.
Why Seven Sisters customers choose us
- More than 20 years in sealant work
- We’re fully insured
- Quality sealants from Arbo and Everbuild
- A 12-month guarantee on all work
Read what affects the cost or customer reviews.
DIY versus a professional finish
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
If you’ve already had a go yourself, that’s fine. We remove it and do the joint properly, so tell us about it when you ask for a quote.
When something else is needed
We will not take on work that will not last, so here’s what sealant can’t put right:
- Cracked or broken glass
- A sealed unit that has misted inside
- A frame that needs repairing or replacing
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we’ll tell you honestly.
Surfaces we seal
- Glass balustrade bases
- Conservatory frames
- Rooflights
- Glass-to-frame joints
- Glass-to-glass joints
- Shower screens
How to look after the new joints
Aftercare is simple:
- Squeegee the shower screen after each use
- Get a new leak looked at quickly
- Ventilate the conservatory to cut condensation
- Check the silicone on glass every year or so
Follow the cure time we give you before the joints get wet so the silicone can set properly. From then on, a mild glass cleaner is all it needs.
Damp patches, drips and condensation along a joint are worth checking. The cause may be sealant or another part, and we’ll tell you which.
What affects the quote in Seven Sisters
For a quick quote, just ask. What matters most is:
- How much there is to do
- When we can work, for business premises
- Access and height
- The old material and how stubborn it is
Homes and businesses are quoted the same way: how much there is to do, how we reach it and what it needs, along with when we can work on site. Call for a quick quote and we will go through it with you.
What we need to know
When you call or email, these details help:
- What the problem is, such as mould, gaps, leaks or cracking
- Roughly how big the job is
- The type of property
- How we’d reach the joints
Call for a quick quote, or email us if that is easier. Tell us about the joints that need doing and we’ll talk you through the work and send you a clear quote.