“Great job. Nice guys, good price, all sorted on time with no drama.”
Oliver Nutt
Google review
Five star, Google reviews
Stone cleaning · Stone sealing · Concrete restoration
Stone, concrete and masonry, cleaned, sealed and restored across Queenstown & Wanaka.Stone, concrete and masonry.
Cleaned, sealed and restored
across Queenstown & Wanaka.
Specialist stone cleaning and sealing, concrete restoration, masonry protection and anti-graffiti coatings across the Southern Lakes, using NZ-made eco-friendly products built for the climate.
Schist & Ōamaru stone·Brick & block·Concrete sealing·Concrete stain removal·Efflorescence
Drag to see the work
The result is in the difference.
Heritage schist · Queenstown
Schist boundary wall.
Salt staining and weathering across a feature schist wall, lifted with pH-balanced chemistry that doesn't damage the mortar joints. The stone's natural character returns without changing the substrate.
How we remove efflorescence
01 / 03
Client words
We don't market loudly. We let the work speak.
“Definitely would recommend using these guys. Great service from Liam, 10/10.”
Rumour Giles
Google review
“Very efficient service and excellent results.”
Callum McKenna
Google review
Selected work
Trusted on Queenstown's landmark builds.
The Mill
Concrete clean & seal, Queenstown
McKenzie & Willis
Storefront water blasting, Queenstown
ROKI Collection
Schist masonry clean & seal, Queenstown
Heritage façades, hotel exteriors, premium residential, large-scale commercial. The job changes, the standard doesn't.
View all projectsWhat we do
Stone, concrete and masonry — cleaned, restored and sealed.
Surfaces we specialise in
Stone
Schist, Ōamaru stone, heritage façades
The signature stone of Central Otago — schist boundary walls, Ōamaru stone façades, heritage masonry — cleaned and sealed without damaging the substrate.
Stone
Schist, Ōamaru stone, heritage façades
The signature stone of Central Otago — schist boundary walls, Ōamaru stone façades, heritage masonry — cleaned and sealed without damaging the substrate.
Concrete
Driveways, slabs, exposed aggregate
Driveways, patios, garage slabs, commercial forecourts and exposed aggregate, restored with chemistry — not high-pressure blasting that wrecks the surface.
Concrete
Driveways, slabs, exposed aggregate
Driveways, patios, garage slabs, commercial forecourts and exposed aggregate, restored with chemistry — not high-pressure blasting that wrecks the surface.
Masonry
Brick, block, retaining walls
Clay brick, concrete block, retaining walls and architectural masonry — cleaned, sealed and protected against frost, salt and alpine UV.
Masonry
Brick, block, retaining walls
Clay brick, concrete block, retaining walls and architectural masonry — cleaned, sealed and protected against frost, salt and alpine UV.
Tile
Travertine, slate, ceramic, limestone tile
Entryways, courtyards and interior floors, cleaned with pH-balanced chemistry chosen specifically for the substrate.
Tile
Travertine, slate, ceramic, limestone tile
Entryways, courtyards and interior floors, cleaned with pH-balanced chemistry chosen specifically for the substrate.
Treatments
Cleaning
Chemistry-led, low-pressure
Targeted chemistry chosen for the substrate. Soft wash and steam where the stone needs it, low-pressure rinsing for everything else.
Cleaning
Chemistry-led, low-pressure
Targeted chemistry chosen for the substrate. Soft wash and steam where the stone needs it, low-pressure rinsing for everything else.
Sealing & protection
Breathable, NZ-formulated
Penetrating sealers and water repellents tested specifically for Central Otago — frost cycles, alpine UV, salt. Protect the surface without changing the look.
Sealing & protection
Breathable, NZ-formulated
Penetrating sealers and water repellents tested specifically for Central Otago — frost cycles, alpine UV, salt. Protect the surface without changing the look.
Restoration
Efflorescence, graffiti, acid washing
Efflorescence and salt stain removal, same-week graffiti response with sacrificial coatings, and surface prep done correctly before sealing.
Restoration
Efflorescence, graffiti, acid washing
Efflorescence and salt stain removal, same-week graffiti response with sacrificial coatings, and surface prep done correctly before sealing.
Waterproofing & industrial coatings
Decks, balconies, below-grade masonry
Liquid-applied waterproofing systems for decks, balconies and damp block walls. Stops leaks at source and prevents efflorescence from returning.
Waterproofing & industrial coatings
Decks, balconies, below-grade masonry
Liquid-applied waterproofing systems for decks, balconies and damp block walls. Stops leaks at source and prevents efflorescence from returning.
Where we work
Servicing Queenstown, Wanaka & the Southern Lakes.
Based in Queenstown, in Wanaka every week. Whether you're on the lakefront in Wanaka, in Hāwea or Albert Town, in Arrowtown or anywhere in between, we service the whole region, same standard, no surprise travel fees.
Request a site visit
Liam Turner, founder, RTS Construction Chemicals
About RTS
Built for the Southern Lakes climate.
We're Queenstown-based, and we make our own NZ-formulated products, Water Repel, Paving Protect, Colour Enhancer and Surface Reviver, built for the frost, alpine UV and salt that destroy imported sealers.
5★
Google rated
NZ-made
Eco-friendly
Local
Queenstown
Common questions
The things people usually ask first.
Do you offer free quotes or assessments?
Yes, free, no-obligation quotes for any of our cleaning, sealing or coating work. We can give you an estimate from photos or a description, but for the most accurate pricing we'll come on-site to look at the surface properly.
Do you work in Wanaka as well as Queenstown?
Yes. We're based in Queenstown but service Wanaka, Hāwea, Cromwell, Arrowtown and the rest of Central Otago weekly. Travel is built into the quote, no surprise fees.
How long do your sealers last on schist and Ōamaru stone?
Our penetrating sealers typically last 5–10 years on stone, depending on exposure and traffic. Heritage walls in sheltered positions can go longer; driveways and paving exposed to vehicles need refreshing sooner.
Are your products eco-friendly?
Yes, our NZ-formulated product range (Water Repel, Paving Protect, Colour Enhancer and Surface Reviver) is low-VOC, non-toxic and breathable, suitable for use near native bush and waterways.
Can you remove white staining on bricks or stone?
Yes. That's efflorescence, salts being drawn through the masonry by moisture. We treat the staining and address the moisture cause so it doesn't return.
Do you do anti-graffiti coatings?
Yes, both sacrificial coatings (single-use, easy wash-off) and permanent coatings (multi-removal). We can advise which suits your building and location.
Get in touch
Tell us about your project.
Free quotes, no obligation. We'll usually come back to you within one working day, same-day if it's urgent.
Where we work
Queenstown · Wanaka · Arrowtown · Cromwell · Frankton · Hāwea · all of Central Otago