Greater London · England
Window & door mastic in Temple, Greater London
Mastic around window and door frames, sills and patio doors for homes and businesses in Temple and across Greater London. Fully insured, ARBOMaster approved and guaranteed for a year.
- Gaps where the sill meets the wall
- Damp patches on the reveal after heavy rain
- Cold air getting in at the frame edge
Temple homes and the weather
Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. With historic houses such as Dr Johnson's House (about 0.2 miles north-east) nearby, there’s older building stock in the area around Temple as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic.
Temple is in London, so parking needs planning: let us know about parking bays, permits or a driveway. Managing a site like St Clement Danes CofE Primary School? Then the mastic around its windows and doors needs looking after like any other building’s. Homes close to Temple Church include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Temple is about 1 mile south of St Pancras, in Greater London. Wherever you are in the SE1 postcode area, we can carry out window mastic at your property. Our Greater London coverage runs to 764 places, and Temple is one of them.
Postcode districts we cover here for window mastic: SE1, WC2H and WC2B. Whether your property is on Shoe Lane, Drury Lane and New Square or anywhere close by, our applicators can take on the job. Temple is on the A4 and A40, so it’s easy for us to get to with everything needed for window mastic. Neighbouring places we cover for window mastic include Temple Bar (1 mile north), Blackfriars (1 mile east), Aldwych (1 mile west), Clare Market (1 mile north-west) and Covent Garden (1 mile west). Larger places within reach include Kensington (4 miles west), Walthamstow (6 miles north-east), Hampstead (4 miles north-west), Ruislip (14 miles west), Brompton (3 miles south-west) and Stockwell (3 miles south).
Near you in Temple
We work in homes and buildings around St Mary-at-Hill, Garden Bridge and London Nautical School, among other places. Other local landmarks include The Devereux pub (within half a mile north-west), British Library of Political and Economic Science (less than half a mile north-west) and Mercers' School (within half a mile north). There’s a railway station in Temple itself: London Blackfriars station. Other landmarks nearby include Gabriel's Wharf (less than half a mile south-east) and Montfichet's Tower (less than half a mile east). For a walk, there’s Barnsbury Wood and St. James's Park Lake.
Window mastic in Temple
A window frame and the wall around it expand and shrink at different rates. Heat and cold make frames grow and shrink against brick or render that hardly moves. That is why the joint needs a flexible, low-modulus sealant rather than something rigid. We are often asked to deal with leaking joints at the ends of sills and gaps between the frame and the inside reveal, across timber windows & doors, window sills and uPVC windows.
London’s Victorian and Edwardian terraces were built with timber sash windows, and many still have them or their replacements. Either way, the mastic between frame and brickwork is what stops draughts and rain getting in, in Temple as anywhere.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we’ll sort it.
- Place
- Temple (SE1, WC2H, WC2B)
- Wider area
- Greater London
- Guarantee
- A year, on every job
- Price
- A clear price before we start
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Landlords, agents and businesses in Temple
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. We can quote for more than one property at once.
Hotels need rooms back in use, so we plan the work room by room. Hotel work is part of what we do, alongside homes and businesses.
Aftercare tips
A little care helps the new joints last. We recommend:
- Avoid blasting the frames with a pressure washer
- Repaint timber before it’s bare
- Do not paint over the silicone
- Avoid harsh chemicals near the mastic
Keep sill grooves and drainage slots clear, so rain drains out rather than building up at the sealant.
Signs to watch for: split or missing mastic, gaps, damp patches inside or black mould on the reveal. If you notice one, it’s time to get the joint looked at.
What the job involves on each surface
Composite doors
Front doors take the weather head on. We pay most attention there.
uPVC windows
The frame is cleaned with a product that won’t harm the plastic, then the sealant goes in between frame and wall.
What else we do in Temple
What happens on the day
We keep the work tidy and contained to the area we are working on, so you can get on with your day. Expect the work to take a few hours for a few frames, or a day or more for a whole house, and we explain the cure time before we leave. In a London area like Temple, the main things to plan are parking and access: tell us about permits, visitor bays or off-street space, which floor we’re working on and whether there’s a lift.
- First, we confirm safe access to each frame.
- Old, cracked mastic is removed completely, along with any loose debris.
- The surfaces are cleaned and left dry, and primed where the sealant calls for it.
- Backing rod fills deep voids and the sealant goes in on top.
- The joint is shaped to shed water and the area tidied.
Getting ready for the visit
- Mention any parking rules near the property
- Mention any sign-in or site rules at work premises
- Keep children and pets away from the work area
How to get a quote
Asking for a quote is easy: tell us what needs doing and where and its rough size. Photos by email help us understand the job, and we will take it from there.
Related advice
Honest limits
We will always be straight with you, so here’s what new sealant will not do:
- Rotten timber, which needs a joiner first
- Draughts through the window seals rather than the frame
- A sash or casement that will not close properly
If in doubt, phone 0345 464 0079 or send us an email and we’ll say what we think.
What we seal
- Window sills
- Timber windows & doors
- Composite doors
- Patio & French doors
- Aluminium frames
- uPVC windows
Temple questions
Is Temple in your area for window mastic?
Yes, Temple is within the area we cover. We work across London and the South East. You can call 0345 464 0079 or drop us an email and tell us what needs doing, and we will give you a clear quote.
Do you work for landlords with property near London Blackfriars station?
Yes, rental work is part of what we do. Just call 0345 464 0079 or email us and tell us about the property, and we will give you a clear price.
How long will my window job take?
The work takes a morning for a couple of windows and a door. Access and the amount of old mastic make the biggest difference.
Will the old sealant be removed?
Yes. Sealing over the old bead is the commonest cause of early failure, and it’s something we never do.
Do you have sealant for grey or black windows?
Usually, yes. Mention the frame colour when you ask for a quote and we’ll match it as closely as we can.
Can you do several jobs on one visit?
Yes. Tell us about everything you’d like done.
Is it worth trying it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
Where is Mr Mastic based?
Our base is in Crawley, West Sussex, and we work across South East England, London and Scotland.
Why deal with it now?
A quick bead over the top of old mastic looks like an easy fix, but it will not grip old, dirty sealant. It peels before long, and water still gets in behind. Proper resealing starts with removing the old joint. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and by the time it shows on a wall or ceiling in Temple, the repair is bigger than the sealant job would have been.
A few things move the cost up or down: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether the work is at height. Your quote takes all of that into account.
Why us?
- 12-month guarantee on every job
- Colour agreed with you before any work starts
- Colour picked to suit the job
- Tidy, careful work
Read our cost guide and what customers say.
Quotes for window mastic in Temple
Call for a quick quote. The main things that affect it are:
- Any mould that needs treating
- Any working-time requirements on site
- The number of rooms or windows
- The old material and how stubborn it is
Rather than a set price list, we price the job in front of us: the amount of work, the old material and the access. The price is agreed before we begin.
What we need to know
When you contact us, it’s useful to know:
- Whether it’s a home or a business
- Whether it has been sealed before
- The rough size of the job
- Access, such as stairs, a lift or height
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we will talk you through what we’d do. When it suits you, phone 0345 464 0079 or email us.