Greater London · England
Sand mastic for sash & case windows in Putney, Greater London
Sand mastic in Putney from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Draughty sash windows at the surround
- Old cement repairs round a window that have failed
- A silicone bead on a sash window that spoils the look
Quotes for sand mastic in Putney
Your quote is based on your job. We take into account:
- How many areas need sealing
- Working hours on commercial sites
- Whether there’s mould to deal with
- How easy the joints are to reach
Combining jobs into one visit usually makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. We’ll send you a clear quote for the lot.
What we need to know
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- Any access issues, like height or stairs
- The rough size of the job
- Pictures of the joints, sent by email
- If someone has resealed it before
Asking for a quote is easy: let us know what needs doing and where. Photos by email help us understand the job, and we will take it from there.
Sand mastic in Putney, done properly
Sand mastic suits most period window surrounds. On modern frames we’d normally use a flexible sealant and we’ll explain which is best for yours. We’re often asked to deal with wind and rain getting in round a sash window and patchy fillers round a sash window, on period & listed homes, sash and case windows and stone surrounds.
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 Putney as anywhere.
We stand behind the work with a one-year guarantee.
- Location
- Putney (SW15, SW19, SW13)
- Region
- Greater London
- Cover
- 12 months on all our work
- Quotes
- A clear price before we start
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Keeping the joints in good condition
Looking after new joints is easy, and it makes a real difference:
- Check with your local planning authority if your home is listed
- Clear gutters so water doesn’t pour onto the windows
- Take care around the mastic when scraping paint
- Have rotten timber repaired before new mastic goes in
Do not touch or press the mastic while it hardens. It skins over quickly but needs longer to fully harden.
Fine cracks show the mastic is starting to fail. Renewing it then is simpler than waiting until it falls out.
Windows and doors in Putney
Historic houses like Fulham Palace (about 0.6 miles north-east) are a reminder that the area around Putney has older buildings as well as new. 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, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
In the older streets around Polish Church of St John the Evangelist, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. For site and facilities teams at buildings such as Our Lady of Victories Catholic Primary School, the mastic around its windows and doors needs looking after like any other building’s.
Putney is about 1 mile south-west of Fulham, in Greater London. Homes, rented property, offices and hotels in Putney is covered for sand mastic, old or new, large or small. The work is guaranteed for a year. Putney is one of 764 towns and villages in Greater London we cover for sand mastic. We also work in London, around 6 miles away.
We work across the SW15, SW19 and SW13 postcode area for sand mastic. If you need sand mastic at a property on Putney High Street, Upper Richmond Road and Spencer Walk or anywhere close by, we can help. Putney sits on or near the A3 and B306, which makes travel easy. Neighbouring places we cover for sand mastic include Roehampton (1 mile south-west), Barnes (1 mile north-west), Fulham (1 mile north-east), Mortlake (2 miles west) and Wimbledon Park (2 miles south). We also work in nearby towns such as London (6 miles north-east), City of Westminster (5 miles north-east), Marylebone (5 miles north-east), Kensington (3 miles north), St Pancras (6 miles north-east) and Shoreditch (8 miles north-east).
Near you in Putney
Around Putney, our work takes us to homes and buildings near Putney School of Art and Design, Bishops Park and The Railway pub, among other places. Putney has its own railway station: Putney station. Other landmarks nearby include Putney Exchange (under half a mile east) and Antique Breadboard Museum (within half a mile north-east). The countryside around Putney includes Henman Hill and Battersea Park Lake.
For landlords and businesses
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
In hotels, rooms out of use cost money, so we plan the work room by room. Hotel work is part of what we do, alongside homes and businesses.
The process
There’s no need to move everything out before we come, just the space around the work. Everything nearby is protected, and the job takes a few hours per window, depending on the condition of the joints for a typical job. In Putney, as in most of London, parking needs a little planning. It helps if you can point us to a visitor permit or a bay close to the door.
- We check the window surrounds and agree which joints need renewing.
- We rake out the old mastic and clean the joint.
- We pack any deep gaps so the mastic sits at the right depth.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- We dress the surface so it sits neatly against the masonry.
Getting ready for the visit
- Mention any leaks or damp you’ve noticed
- Mention any tricky access
- Tell us about any previous sealing or DIY attempts
How to get a quote
It all starts with a short chat. Describe the problem, the location and the size of the job, and we will talk you through what we’d do. When it suits you, call 0345 464 0079 or send us an email.
Read more
When to call us in Putney
Timber frames move with the seasons. The movement cracks the mastic little by little.
Look out for any of the following:
- Mastic dropping out of the joint
- Gaps between timber frames and stone or brick
- Mastic that needs renewing before redecorating
- Draughty sash windows at the surround
Putney is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
Before you book anyone
- Are they insured?
- What happens if they find a problem under the old sealant
- Whether VAT is included
- How much experience the applicator has
Surface by surface
Tenement and terrace windows
Rows of sash windows on tenements and terraces often need renewing together. We can do one window or several.
Sash and case windows
Sash windows are where we do most sand mastic work. We renew the mastic round each box.
Putney: your questions answered
Is parking a problem for a job in Putney?
In much of London, parking needs planning: a visitor permit or a nearby bay makes the day run more smoothly.
Do you cover Putney for sand mastic?
Yes. We work across London and the South East, and Putney is part of that. Just call 0345 464 0079 or send us an email with a few details of the job, and we will give you a clear price.
How much does sand mastic cost in Putney?
There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. You will get a clear quote before work begins.
Are you insured?
Yes, we’re fully insured for every job we do.
Do the sealants smell?
Sometimes, a little. It fades as the sealant cures.
Do you take out the old sealant first?
Yes. Sealing over the old bead is the commonest cause of early failure, and it’s something we never do.
Which is right for my windows, sand mastic or modern sealant?
For period timber windows in stone or brick, sand mastic is often the better fit. Modern frames normally suit a flexible sealant, and we’ll explain why.
Where is Mr Mastic based?
We work from Crawley. Our applicators cover Putney.
Why it’s worth doing now in Putney
Silicone might seem the quicker option, but on period stone or brick it often looks out of place. Sand mastic suits the building and finishes neatly against the masonry. In a flat in Putney, failed sealant seldom stays inside your own four walls: water from a shower or window joint can reach the flat below, and gaps in fire-stopping matter to everyone in the building.
What you pay reflects the work, not a rough estimate. That’s why we ask about the job first.
Why choose Mr Mastic in Putney
- Rated 4.9 stars on Google
- An ARBOMaster approved applicator
- We never seal over old sealant
- Tidy, careful work
Read how sealant jobs are priced and our reviews.