Greater London · England
Sand mastic for sash & case windows in Pimlico, Greater London
Sand mastic in Pimlico from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Cracked mastic round a front door frame
- Draughts and rain around sash boxes
- Weathered mastic on the most exposed windows
Sand mastic for homes and businesses in Pimlico
Sand mastic suits most period window surrounds. On modern frames we’d normally use a flexible sealant, and we will talk through which suits your home. Typical jobs include gaps round a timber door in stone or brick and draughts and rain around sash boxes, across brick reveals, period & listed homes and stone surrounds.
From mansion-block windows to modern glazing in new flats, London has every kind of frame. Over the years, the sealant around them shrinks, cracks and pulls away, which is when draughts and damp patches appear in homes in Pimlico.
We guarantee the work for a year. If something isn’t right with it in that time, tell us and we’ll put it right.
- Place
- Pimlico (SW1P, SW1V, SW1W)
- Region
- Greater London
- Cover
- A year, on every job
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Signs you need sand mastic in Pimlico
Over the years, sand mastic weathers. It dries out, cracks and loses its grip from the frame or the masonry.
Keep an eye out for these signs:
- Silicone on a period window that looks wrong
- Gaps between timber frames and stone or brick
- Tired mastic found when preparing windows for paint
- Mastic worn away on windows facing the weather
For landlords with property near London Victoria station, any sash windows need sound mastic to keep draughts and rain out.
Comparing quotes
- How hidden problems are handled
- The length of the guarantee
- How much experience the applicator has
- Is VAT in the price?
What happens on the day
Before we leave, we go over the finished joints with you and explain the cure time. The work normally takes a few hours per window, depending on the condition of the joints, depending on how much there is to do. For a job in Pimlico, parking and access are the things to plan: let us know about parking, the floor we’ll be working on and any lift or shared entrance.
- First, we look at the surrounds with you and agree what needs doing.
- Old, loose mastic is raked out and the joint cleaned.
- Deep voids are packed so the mastic is the right thickness.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- The finish is dressed so it sits neatly against the stone or brick.
Getting ready for the visit
- For business premises, tell us about site rules or sign-in
- Try not to wet indoor joints just before the visit
- Plan for the work area to be out of bounds to pets and children
Get a quote
Need a quote? Please ring 0345 464 0079 or send us an email and tell us about the job. We’ll explain what we’d do and give you a clear quote before work begins.
Advice
How to look after the new joints
No joint lasts for ever, but care makes a real difference. Our tips:
- Ask a joiner to look at soft timber first
- Find out about consent before window work on a listed home
- Ask us before painting near the mastic
- Keep modern sealant off the mastic
Keep paint scrapers and sanders off the mastic when redecorating. Hard scraping can loosen it.
Crumbling mastic lets rain into the joint. That water can reach the timber frame and the wall so early renewal protects both.
Can I do it myself?
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it doesn’t work out, we can still put it right.
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Pimlico: your questions answered
Can you do sand mastic in Pimlico?
Yes, Pimlico is within the area we cover. Our work covers London and the South East. Just call 0345 464 0079 or drop us an email with a few details of the job, and we will give you a clear price.
Can parking be tricky for a visit in Pimlico?
Parking in Pimlico, as in most of London, takes a little planning: a visitor permit or a nearby bay makes the day run more smoothly, so mention what’s available when you book.
How long does sand mastic take?
It depends on the size of the job, but as a guide it takes a few hours for a single window, longer for several. We’ll tell you when we quote.
Do you work for letting agents?
Yes, often. We can quote for several properties at once.
Will you leave a mess?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.
Can you do several jobs on one visit?
Yes. More than one area can go on one quote.
Are you fully insured?
Yes. Full insurance covers our work, and we can confirm the details when we quote.
Is it possible to paint over sand mastic?
It’s traditionally left unpainted, which is what traditional guidance recommends. Talk to us before any painting near it.
How we quote for sand mastic
Jobs vary more than people expect. What affects the quote:
- The old material and how stubborn it is
- How many areas need sealing
- Mould in or behind the old joints
- Access and height
There are no prices on our website, because the cost depends so much on the job itself. Call for a quick quote.
Helping us quote
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- Whether it’s a home or a business
- Where the job is, and your postcode
- Any access issues, like height or stairs
- What the problem is, such as mould, gaps, leaks or cracking
For a quote, ring 0345 464 0079 or email us and tell us where the job is and what the problem looks like. You’ll have a clear quote before work begins.
Why it’s worth doing now in Pimlico
New sash windows are a major, costly change and on a listed home, consent may be needed. If the frames are sound, renewing the mastic deals with gaps and draughts at the surround. 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. Dealing with it early is far simpler for homes in Pimlico.
Every job is a little different, so each one gets its own quote. Size, access and the product the joint needs all make a difference.
Why us?
- Tidy, careful work
- 12-month guarantee on every job
- We’re fully insured
- Domestic, commercial and hotel work
Read what affects the cost and customer reviews.
Pimlico homes and the weather
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. Historic houses like Buckingham Palace (about 0.9 miles north) are a reminder that the area around Pimlico 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 is traditional sand mastic.
For an older house near a landmark such as St Gabriel's, frames set in older brick or stone need a sealant that suits the wall as well as the frame. As a London address, Pimlico can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
Pimlico is about 1 mile east of Brompton, in Greater London. Across the SW1P area, we can carry out sand mastic at your property. Across Greater London, we cover 764 places, and Pimlico is one of them.
We work across the SW1P, SW1V and SW1W postcode area for sand mastic and the streets around it. If you need sand mastic at a property on Ponton Road, Wilton Road and Ebury Square or anywhere close by, we can help. Pimlico is on the A202 and A3212, which makes it straightforward to reach. We also cover Victoria (1 mile north-west), Nine Elms (1 mile south-west), Westminster (1 mile north), Millbank (1 mile north) and Vauxhall (1 mile east). Within a short drive, we also cover Kensington (3 miles west), St Pancras (3 miles north), Shoreditch (4 miles north-east), Walthamstow (8 miles north-east), Hoxton (4 miles north-east) and Whitechapel (4 miles north-east).
Local landmarks in Pimlico
Locally, jobs take us to homes and businesses close to Lambeth Palace Library, Grosvenor School of Modern Art and Pimlico Gardens and the streets around them. Also close by are Denbigh Arms (under half a mile north-west) and Pimlico Academy (under half a mile south-east). The nearest railway station is London Victoria station, about 0.5 miles north-west of the centre. Nearby you’ll also find Baynard's Castle (2.3 miles north-east) and Harrods (1.3 miles north-west). For a walk, there’s Bellenden Road Nature Garden and Ludgate Hill.
How the job changes by surface
Tenement and terrace windows
Rows of sash windows on tenements and terraces often need renewing together. We work on single windows or whole elevations.
Period and listed homes
Many older homes were built with sand mastic round the windows. If your home is listed, ask your local planning authority about consent.