Quartstones
Mastic Sealing Specialists. Quartstones has been vetted and approved by TrustATrader. Covering London
Membership number TT33423
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Register GuaranteeAbout Quartstones, London
Quartstones provides professional mastic sealant services in London, helping homeowners and businesses achieve a clean, long-lasting silicone sealant finish across natural stone and tiled areas. With over 11 years’ experience in the mastic sealant trade, we focus on understanding your needs and delivering results that match—and exceed—your expectations.
We’re based in London and cover London and surrounding areas. Our friendly, clean and tidy approach is built around reliable communication, careful project management, and a consistent standard of workmanship for both domestic and commercial customers. We work with all types of natural stone, tiling, and timber/wood floor finishes, so you get an outcome that looks right and performs properly.
We seal and finish joints around bathrooms, kitchens and more, and our services include:
- Bathrooms
- Shower Rooms
- Sanitary
- Steam Room
- Swimming Pool
- Kitchens (sink, hob, hoods, worktop, cooker…)
- Floor, Skirting Board
- Tiled Areas
- Windows Internal External
- Doors
- Expanding joint
- Cut Out and Reseal Again
To arrange a free, no-obligation consultation and quote, please use the contact details above. Please mention TrustATrader when you get in touch.
Quartstones
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- Company address verified
- Customer references checked
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Reviews (5)
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Average rating: 5.0 out of 5
Review by Rico
on 13th August 2026
"Bradley was recommended to me by a friend. He was really respectful, friendly and easy to talk to. Bradley went above and beyond and did a really good quality job. I would be recommending him to my friends and family."
- Initial impression Initial impression: 5 out of 5.0
- Punctuality Punctuality: 5 out of 5.0
- Cleanliness Cleanliness: 5 out of 5.0
- Quality Quality: 5 out of 5.0
- Value Value: 5 out of 5.0
- Overall opinion Overall opinion: 5 out of 5.0
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Average rating: 5.0 out of 5
Review by Tanya
on 11th August 2026
"He was efficient and kept to the price."
- Initial impression Initial impression: 5 out of 5.0
- Punctuality Punctuality: 5 out of 5.0
- Cleanliness Cleanliness: 5 out of 5.0
- Quality Quality: 5 out of 5.0
- Value Value: 5 out of 5.0
- Overall opinion Overall opinion: 5 out of 5.0
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Average rating: 5.0 out of 5
Review by Mike - Theydon Bodyworks
on 4th August 2026
"Bradley we very skilled, good quality work and really professional. Great service - did a good job."
- Initial impression Initial impression: 5 out of 5.0
- Punctuality Punctuality: 5 out of 5.0
- Cleanliness Cleanliness: 5 out of 5.0
- Quality Quality: 5 out of 5.0
- Value Value: 5 out of 5.0
- Overall opinion Overall opinion: 5 out of 5.0
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Average rating: 5.0 out of 5
Review by George
on 23rd July 2026
George - Image 1 "I have used Bradley on multiple occasions for brick pointing and sealant work, he has always been realiable and the standard of work has been exceptional throughout!!"
- Initial impression Initial impression: 5 out of 5.0
- Punctuality Punctuality: 5 out of 5.0
- Cleanliness Cleanliness: 5 out of 5.0
- Quality Quality: 5 out of 5.0
- Value Value: 5 out of 5.0
- Overall opinion Overall opinion: 5 out of 5.0
