Greater London · England
Window Mastic in Temple Fortune
We cover Temple Fortune for mastic around window and door frames, sills and patio doors. Old material cut out, joints cleaned and sealed neatly and a one-year guarantee.
- Water coming in at the bottom corners of a door
- Sealant in the wrong colour for the frame
- Rushed sealant from a window installation
Window mastic in Temple Fortune, done properly
A window frame and the wall around it expand and shrink at different rates. Plastic and aluminium frames move with the temperature, while masonry stays fairly still. That’s why the joint needs a flexible, low-modulus sealant rather than something rigid. We work on timber windows & doors, uPVC windows and patio & French doors, and the jobs we see most are rain getting in at the frame or under the sill and leaking joints at the ends of sills.
Many London homes are flats, with windows high above the street. Who looks after the outside of the frames can depend on the lease, so check that first, and access in Temple Fortune is something to talk through when you book.
The work is covered for a year after we finish. If there’s a problem with it, please call 0345 464 0079 or email us.
- Place
- Temple Fortune (NW11, NW4, N3)
- Wider area
- Greater London
- Guarantee
- A year, on every job
- Quotes
- A clear price before work begins
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
When it isn’t the sealant
New sealant can’t fix everything, and we will tell you before any work starts. Sealant will not put right:
- Misting between the panes of a double-glazed unit (that needs a new unit)
- Worn gaskets, brush seals or a door that has dropped
- Faulty window hardware
Not sure which it is? You can ring 0345 464 0079 or send us an email and we will tell you honestly.
Surfaces we seal
- Timber windows & doors
- Composite doors
- Aluminium frames
- uPVC windows
- Patio & French doors
- Window sills
Nearby places to Temple Fortune
Also in Temple Fortune
Windows and doors in Temple Fortune
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 Heath Hall (about 1.3 miles east) nearby, there’s older building stock in the area around Temple Fortune as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.
Schools such as Garden Suburb Infant School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s. For landlords with property near Brent Cross West station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first. If you live in an older home near Saint Mary and Archangel Michael Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Temple Fortune is about 1 mile south-west of Finchley, in Greater London. Homes, rented property, offices and hotels in Temple Fortune can book us for window mastic, old or new, large or small. The work is guaranteed for a year. Temple Fortune is one of 764 towns and villages in Greater London we cover for window mastic. We also work in London, around 7 miles away.
Our applicators cover all of the NW11, NW4 and N3 postcode area for window mastic and the streets around it. Window mastic is available to properties on Hoop Lane, Bridge Lane and Limes Avenue. Temple Fortune is on the A598, which makes it straightforward to reach. We also cover Golders Green (1 mile south), Hampstead Garden Suburb (1 mile east), East Finchley (1 mile north-east), North End (1 mile south-east) and Childs Hill (1 mile south). Within a short drive, we also cover London (7 miles south-east), City of Westminster (5 miles south-east), Marylebone (5 miles south-east), Kensington (6 miles south), St Pancras (5 miles south-east) and Shoreditch (6 miles south-east).
Near you in Temple Fortune
Typical jobs here are in homes near The Henrietta Barnett School, The King Alfred School and Princes Park, among other places. The nearest railway station is Brent Cross West station, about 1.5 miles south-west of the centre. Other landmarks nearby include Highgate Private Hospital (1.9 miles east) and Jewish Museum - Finchley (1 mile north-east). Open spaces near Temple Fortune include Darland's Lake and Parliament Hill.
Temple Fortune questions
Can parking be tricky for a visit in Temple Fortune?
In much of London, parking needs planning: a visitor permit or a nearby bay makes the day run more smoothly.
Do you cover Temple Fortune for window mastic?
Yes. We work across London and the South East, and Temple Fortune is part of that. You can phone 0345 464 0079 or drop us an email and tell us what needs doing, and we will give you a clear quote.
I’m a tenant. Can you help?
Yes. Check with your landlord; we can send the quote to them too.
Does the work come with a guarantee?
Yes. Each job is covered for 12 months, inside or out.
Do you seal inside as well as outside?
Yes. Outside is the weather seal; inside closes the gap to the plaster. We do one or both.
Do you work for hotels and businesses?
Yes. Hotels, offices and other businesses use us, and we’re fully insured.
Will new mastic stop draughts?
In many cases. Air often gets in between the frame and the wall, and resealing inside and out closes it.
Do the sealants smell?
There can be a smell while the sealant cures. Ventilation helps.
How it works
On the day, there’s very little for you to do. Point us to the joints and we will get on with it. The job generally takes a few hours for a handful of frames, longer for a whole house, including the tidy-up. In Temple Fortune, flats, stairs and shared entrances are part of the routine. Mention any building rules, key holders or managing agents when you book.
- Each frame is looked over and we agree which ones need resealing.
- The old mastic is cut out and scraped back to clean surfaces.
- Deep gaps get closed-cell backing rod to set the depth.
- The new sealant goes on in white, brown, anthracite grey, black or clear to suit.
- We tool each bead neatly and check every joint is closed.
Before we arrive
- Tell us about access, such as stairs, a lift or high-level joints
- Mention any parking rules near the property
- Mention any sign-in or site rules at work premises
Get a quote
Every job is quoted individually, so start by telling us what you need. Just call 0345 464 0079 or email us with the details and send photos if you have them.
Advice
What affects the quote in Temple Fortune
Some jobs are bigger than they look, and some smaller. What affects the quote:
- How much old sealant there is and how hard it is to remove
- Which sealant suits the joint
- Mould in or behind the old joints
- The number of rooms or windows
A few things move the cost up or down: how much old sealant there is and how stubborn it is, any mould to treat, and whether we need extra access for height. Your quote takes all of that into account.
What to tell us for a quote
When you call or email, it’s useful to know:
- The rough size of the job
- If someone has resealed it before
- Photos by email, if that’s easy
- What’s wrong with the joints now
For window mastic in Temple Fortune, call 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.
Surface by surface
Composite doors
If the door itself is draughty, the issue may be the door seals or hinges rather than the frame mastic. We’ll tell you if that is what we find.
Aluminium frames
Aluminium needs a sealant that bonds to coated metal, and acetoxy silicones are not used, as they can attack some metals. We use a neutral-cure product.
Aftercare tips
No joint lasts for ever, but care makes a real difference. A few tips:
- Clear any debris from frame drain holes
- Keep paint and stain on wooden frames in good order
- Do not paint over the silicone
- Air rooms to keep condensation down around windows
A yearly look round the frames is enough. Cracks and lifting edges are easy to spot early, and if anything looks wrong, just call 0345 464 0079 or email us.
Look out for the warning signs: cracks in the mastic, gaps you can see light through, damp on the reveal or mould around the inside of the frame. If you notice one, it’s time to get the joint looked at.
Landlords, agents and businesses in Temple Fortune
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
We regularly work with letting and managing agents. Tell us the address, the job and how access works.
Why it’s worth doing now in Temple Fortune
Draughts and leaks do not always mean new windows. If the frames and glass are in good order, resealing the joints is often all that is needed. If we find failed glass units or worn seals, we will tell you. In a flat in Temple Fortune, failed sealant seldom stays inside your own four walls: water can reach the neighbours below, and gaps in fire-rated joints affect the whole building.
There are no prices on our website, because each job is priced on what it involves. Call for a quick quote and we’ll talk you through it.
Why choose Mr Mastic in Temple Fortune
- Quality sealants from Arbo and Everbuild
- Tidy, careful work
- Homes, businesses and hotels
- White, clear, grey or another colour, product permitting
Read our cost guide and customer reviews.