Greater London · England
Sand Mastic in Richmond
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homeowners, landlords and businesses in Richmond. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Mastic dropping out of the joint
- Weathered mastic on the most exposed windows
- Gaps round a timber door in stone or brick
Sand mastic for homes and businesses in Richmond
Sand mastic has long been used to fill the joint between timber frames and masonry. It’s made from sand and a linseed-oil-based binder, applied by hand. On period homes, it looks right where silicone wouldn’t. Common call-outs are for draughts and rain around sash boxes and tired mastic found when preparing windows for paint, on stone surrounds, brick reveals and tenement windows.
London has a lot of flats and conversions, where windows are often on upper floors. In a converted house or block, the lease usually says who is responsible for the windows, so it’s worth checking before booking, and access in Richmond is something to talk through when you book.
Our work is backed for twelve months, in Richmond and everywhere else we cover.
- Location
- Richmond (TW9, TW1, TW10)
- Wider area
- Greater London
- Cover
- One year on every job
- Quotes
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Should I try it myself first?
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 fails, we can still redo it.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Nearby places to Richmond
Also in Richmond
What sand mastic looks like in Richmond
In London conversions and blocks, the lease decides who is responsible for the frames, so check that before you book. With historic houses such as Pembroke Lodge (about 1 mile south) nearby, there’s older building stock in the area around Richmond 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.
Rented homes near Richmond station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about. Richmond is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book. Schools such as The Vineyard School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.
Richmond is about 5 miles south-west of Kensington, in Greater London. For sand mastic in and around Richmond, it’s easy to get a quote: please ring 0345 464 0079 or drop us an email. We cover Greater London from our Crawley base. Across Greater London, we cover 764 places, Richmond among them. There’s also a page for London, roughly 9 miles from Richmond.
Work in TW9, TW1 and TW10 works the same way as everywhere else we cover. If you need sand mastic at a property on Kew Road, Dee Road and Park Road or a nearby road, we can help. Nearby, we also carry out sand mastic in Petersham (1 mile south), St Margarets (1 mile west), Eel Pie Island (1 mile south-west), Ham (1 mile south) and Isleworth (2 miles north-west). We also work in nearby towns such as London (9 miles east), City of Westminster (8 miles north-east), Marylebone (8 miles north-east), Kensington (5 miles north-east), St Pancras (9 miles north-east) and Shoreditch (11 miles north-east).
Landmarks near Richmond
We work in homes and buildings around The Victoria pub, Christ's Church of England Comprehensive Secondary School and Terrace and Buccleuch Gardens and the streets around them. The closest station to Richmond is Richmond station, roughly 0.5 miles north of the centre. Nearby you’ll also find Eel Pie Island Museum (1.2 miles south-west) and South Middlesex Hospital (1.6 miles west). For a walk, there’s Richmond Hill and Ham Lands.
Quotes for sand mastic in Richmond
We do not publish a price list. The quote depends on:
- Mould in or behind the old joints
- The number of rooms or windows
- The old material and how stubborn it is
- When we can work, for business premises
Commercial jobs are quoted on the same basis as homes: the amount of work, how we reach it and what it needs, plus any working-time requirements on site. Call for a quick quote and we will go through it with you.
What to tell us for a quote
There’s no need for technical detail. It helps if you can tell us:
- The type of property
- Whether it has been sealed before
- Roughly how big the job is
- Access, such as stairs, a lift or height
Want a quote for sand mastic? Please ring 0345 464 0079 or email us and tell us about the job. We’ll explain what we’d do and give you a clear price before any work starts.
Common questions in Richmond
I let a flat near Richmond station. Can you help?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. You can phone 0345 464 0079 or send us an email with the details for a clear quote.
Is parking an issue for sand mastic in Richmond?
In much of London, parking needs planning: a visitor permit or a bay close to the door helps a lot.
What information do you need?
Tell us what needs doing and where, plus photos if you have them. We will ask anything else we need to know.
Do I need permission for sand mastic on a listed building?
Your local planning authority is the one to ask. They decide whether consent is needed for work to your windows.
How do I get a quote for sand mastic in Richmond?
It depends on the job, so we quote each one individually. For a quick quote, ring 0345 464 0079 or drop us an email and let us know what needs doing and where.
Do you guarantee sand mastic work?
You get our one-year guarantee on every job.
What sealant do you use?
It depends on the joint: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. We use products from Arbo and Everbuild.
Can I add another job to the visit?
Yes, and it often makes sense. Combining jobs makes good use of the visit.
How the job changes by surface
Tenement and terrace windows
Upper-floor windows need access planning. Tell us the height and we will confirm what’s needed.
Sash and case windows
Sash windows are where we do most sand mastic work. Each joint round the box is raked out and renewed.
For landlords and businesses
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
We also work for property managers and facilities teams. We can quote a run of properties together, and we’re fully insured for the work.
When it is not the sealant
To be straight with you, some problems need a different trade:
- Decisions on consent for listed homes
- Masonry that needs repairing
- Putty and glazing repairs
If in doubt, phone 0345 464 0079 or email us and we’ll say what we think.
Joints and surfaces we work on
- Brick reveals
- Period & listed homes
- Sash and case windows
- Stone surrounds
- Timber door frames
- Tenement windows
Looking after it afterwards
Simple care keeps the joints in good condition. Our advice:
- Have rotten timber repaired before new mastic goes in
- Keep modern sealant off the mastic
- Renew mastic before redecorating the windows
- Find out about consent before window work on a listed home
Leave the new mastic alone while it firms up. It forms a skin fairly soon, but takes longer to harden fully.
Once mastic starts to crumble, rain gets in. That water can reach the timber frame and the wall, so renewing it early is worth it.
What happens on the day
Once we are on site, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. Most jobs then take anything from a few hours to a full day, depending on how many windows. Many London jobs are in flats, so we come ready for stairs, narrow hallways and shared entrances. Mention any building rules, key holders or managing agents when you book.
- We start by checking each surround and agreeing the joints to renew.
- 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
- Mention any sign-in or site rules at work premises
- Tell us about access, such as stairs, a lift or high-level joints
- Let us know about parking restrictions
Ask for a quote
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 email photos if that is easy.