Greater London · England
Sand mastic for sash & case windows in Temple, Greater London
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in Temple and across Greater London. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Mastic worn away on windows facing the weather
- Draughts and rain around sash boxes
- Window mastic to renew ahead of painting
Sand mastic in Temple, done properly
Sand mastic has long been used to fill the joint between timber frames and masonry. It’s a mix of sand and a linseed-oil-based binder and built up by hand. On period homes, it looks right where silicone wouldn’t. Typical jobs include mastic round period door frames that has failed and old sand mastic that has cracked, crumbled or fallen out, on stone surrounds, sash and case windows and timber door frames.
Much of London’s older housing was built with timber sash windows, some still in place and some long since replaced. Whatever is in the opening now, the joint between frame and wall is what keeps the weather out, in Temple as anywhere.
The work is guaranteed for twelve months. If something is not right with it in that time, tell us and we’ll put it right.
- Where
- Temple (SE1, WC2H, WC2B)
- Region
- Greater London
- Cover
- A year, on every job
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Landlord and commercial work in Temple
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance.
Letting agents and landlords in Temple can book us as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order.
Why deal with it now?
Not every filler suits an old window surround. Sand mastic matches what was there and that can be important for listed homes. In London conversions, one flat’s bathroom is often above another flat’s ceiling, so a small leak from tired sealant can mean a neighbour’s ceiling and a lot of disruption. Dealing with it early is far simpler.
The cost depends on the amount of work, how much old material has to come out and how easy the joints are to reach. We give a clear quote before any work starts.
Why book with us
- Any old sealant cut out fully, not covered over
- Approved under the ARBOMaster scheme
- Anti-fungal silicone where joints get wet
- Every job guaranteed for a year
Read our cost guide and what customers say.
What the job involves on each surface
Tenement and terrace windows
Tenements and terraces often have many sash windows with ageing mastic. We can do one window or several.
Sash and case windows
On a sash window, the mastic joint shows on the outside, so a neat, even finish matters.
How we quote for sand mastic
Call for a quick quote. The main things that affect it are:
- Whether old sealant or filler has to be cut out
- Any mould that needs treating
- Any working-time requirements on site
- The product the joint needs
Instead of a standard rate, we price the job in front of us: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Helping us quote
To make quoting easier, please include:
- Whether it’s a home or a business
- Any previous sealing or DIY work
- Any access issues, like height or stairs
- What’s wrong with the joints now
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and add photos by email if you can.
DIY versus a professional finish
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Temple: your questions answered
Is Temple in your area for sand mastic?
Yes, Temple is within the area we cover. Our work covers London and the South East. You can ring 0345 464 0079 or send us an email and tell us what needs doing, and we will give you a clear price.
Do you work for landlords with property near London Blackfriars station?
Yes. We work for letting agents and landlords as well as homeowners. Just call 0345 464 0079 or email us with the address and what needs doing, and we’ll send you a clear quote.
How long does sand mastic take?
Typically it takes a few hours for a single window, longer for several. Bigger jobs take longer, and we’ll say how long yours will take.
Do I need to be at home?
For indoor joints, yes, someone needs to let us in. After that, you can carry on with your day.
What exactly is sand mastic?
A traditional pointing material made from sand and a linseed-oil-based binder for the joint between timber frames and masonry.
Do you guarantee sand mastic work?
Our one-year guarantee covers every job, sand mastic included.
Do you have insurance?
Yes, we are fully insured for every job we do.
Will the old sealant be removed?
Yes. Sealing over old sealant is the main reason resealing fails early, so we never do it.
Places near Temple
Other services in Temple
How to look after the new joints
Joint life depends on how it’s used and looked after. We suggest:
- Get any rot dealt with first
- Find out about consent before window work on a listed home
- Sort the mastic before the decorators arrive
- Inspect the joints round the windows every year or so
Leave the new mastic unpainted, which is the traditional advice. Ask us before any decorating around it.
Good mastic helps keep the frame dry. Failed mastic lets water reach the timber and timber that stays wet can rot.
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 work itself takes anything from a few hours to a full day, depending on how many windows. In Temple, 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 agree which joints need doing.
- We remove the old, loose mastic.
- Deep gaps are packed so the mastic sits at the right depth.
- The sand mastic is mixed and pressed into the joint by hand.
- The surface is finished to suit the stone or brick.
How to prepare
- Clear the area around the work
- Keep pets and children clear of the area while we work
- Let us know about earlier repairs to the joints
Getting a quote
Asking for a quote is easy: let us know the job and the location. A few pictures by email make the job easier to understand.
Advice
Sand mastic in Temple: local notes
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 timber frames in brick or stone need a different approach from a modern uPVC window. London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For landlords with property near London Blackfriars station, any sash windows need sound mastic to keep draughts and rain out. As a London address, Temple can be tricky for parking: tell us about permits, visitor bays or off-street space when you book. Schools such as St Clement Danes CofE Primary School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.
Temple is about 1 mile south of St Pancras, in Greater London. Anywhere in SE1, we cover sand mastic for homes and businesses. Temple is one of 764 towns and villages in Greater London we cover for sand mastic.
We cover every part of SE1, WC2H and WC2B for sand mastic and the streets around it. Sand mastic is available to properties on Shoe Lane, Drury Lane and New Square and the roads around them. Temple is on the A4 and A40, so it’s easy for us to get to with everything needed for sand mastic. Other places close to Temple 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).
Landmarks near Temple
Typical jobs here are in homes near St Mary-at-Hill, Garden Bridge and London Nautical School. Nearby too are 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 (less than half a mile north). There’s a railway station in Temple itself: London Blackfriars station. Nearby you’ll also find Gabriel's Wharf (less than half a mile south-east) and Montfichet's Tower (under half a mile east). Not far away are Barnsbury Wood and St. James's Park Lake.