Theory H₂O

Established · Canada

Decorative plumbing reimagined from within

With twenty years of specialized expertise in the design and manufacturing of decorative plumbing products. We exist to serve architects, designers, and installers who refuse to separate beauty from performance.

Who We Are

Theory H₂O was founded on a singular conviction: that the sophistication of a space is only as credible as the engineering behind it. Our team brings uncompromising technical mastery to every project, from concept through installation.

What We Make

At the centre of everything Theory H₂O makes is OneRough™, a patent-pending telescopic cartridge rough-in engineered to support any handle or trim generation for the life of the building. Every product precision molded and CNC-machined to perfect tolerance. Designed and assembled in Canada, handles and trim are where brands come to life.

Where We're Going

OneRough™ is available Q4 2026, engineered to support handle collections and future trim generations from any brand. Handles and trim are the focus of Theory Studio, where existing collections are liaised and new product development is led in direct collaboration with brands. Spout and shower offerings continue through our current lineup.

Theory H₂O Studio

Design without limits

The dedicated handles and trim arm of Theory H₂O. The bridge between brands and the OneRough™ platform. From liaising existing handle collections to leading entirely new product development, in direct collaboration with brands and their design teams.

Luxury HospitalityHigh-End ResidentialCustom ColourBespoke FinishTexture & ReliefBrand IdentityArchitect SpecifiedDesigner Collaborations

CNC Precision

Every Theory H₂O product is precision-machined to tolerances that make perfectly flush trim installation possible. Designed and assembled in Canada. Built to outlast the building it serves.

"Handles and trim are where brands come to life."

Theory H₂O · Studio

Patent Pending Innovation

Patent Pending · Theory H₂O OneRough™

OneRough^™

Telescopic Cartridge System (TCS) · Available Q4 2026

Three years in development. OneRough™ is a telescopic cartridge system that allows handles and trim to land exactly as designed, perfectly flush with any finished surface, regardless of tile depth or wall variation. The era of compromised trim positioning is over.

Available Q4 2026. Engineered to support handles and trim from any brand, current or future. A specification that works once and adapts forever.

Explore OneRough™ Valve Systems →

Certifications & Compliance

North America

✓cUPC
Certified

✓ASSE
1016

✓ASME
A112.18.1

✓CSA
B125.1

✓NSF/ANSI
61

✓LEED v4
Compatible

Australia & Pacific

✓WELS
Compliant

✓AS/NZS
3718

✓AS 4020
Certified

Europe

✓EN 817
Compliant

✓EN 200
Compliant

✓WRAS
Approved

Patent

™Patent
Pending

LEED & Sustainability

Specify once. Sustain for generations.

OneRough™ reframes how architects and specifiers approach plumbing infrastructure. The conversation is no longer "which rough-in fits this wall depth?" It becomes: specify OneRough™ once, and it fits every wall depth, every renovation, and every new trim generation for the life of the building.

This is circular economy thinking embedded in the product itself. Theory H₂O's stainless steel platform supports multiple LEED v4 credit categories through material integrity, longevity, reduced replacement cycles, and elimination of chemical surface treatments that compromise indoor air and water quality.

Materials & Resources

Stainless steel is 100% recyclable with no material downgrade. Eliminates landfill contribution at end of product life.

Indoor Water Quality

No coatings, no leaching. Pure stainless steel contact surfaces with no biocides, no antimicrobials, no chemical treatments.

Innovation Credits

OneRough™'s generational trim adaptability enables a single rough-in specification to serve multiple renovations, a first in the industry.

Reduced Embodied Carbon

Products engineered to outlast the building's renovation cycles dramatically reduce replacement-driven embodied carbon over a 50-year period.

Sustainable Sites

Stainless steel's longevity and recyclability contribute to whole-building life cycle assessments, supporting MR Credit documentation for LEED v4 submittals.

Circular Economy

Aligned with Ellen MacArthur Foundation circular economy principles: designed to last, designed to be repurposed, and designed to eliminate the concept of waste entirely.

For Architects & Specifiers

OneRough™ reframes the specification conversation entirely.

Before

"Which rough-in fits this wall depth?"

With OneRough™

"Specify once. It fits every wall depth, every renovation, every new trim generation, for the life of the building."

OneRough™ is a spec-and-forget infrastructure decision. It reduces architect liability, eliminates contractor callbacks, supports LEED documentation, and delivers an owner a plumbing infrastructure asset, not a consumable.

For LEED project teams, the combination of stainless material integrity, telescopic adaptability, and generational trim compatibility creates a product narrative that touches Materials, Waste, Indoor Quality, and Innovation credits simultaneously. A rare achievement for a single product specification.

Contact our studio for specification documents, material data sheets, and LEED credit support.

Request Specification Documents →

Material Philosophy

Stainless steel. The only choice.

Exclusively stainless steel. A decision rooted in performance, longevity, and responsibility.

100% Recyclable

Fully recovered and reprocessed at end of life. No landfill. No material downgrade. A genuine circular loop.

No Coatings. No Leaching.

No zinc. No brass. No chemical surface treatments. Pure stainless contact surfaces that cannot degrade into water.

Generational Durability

Resistant to corrosion, tarnish, and degradation. Products built to outlast the building itself.

The Collection · In Front of the Wall

Precision where it's seen.
Craft where it's felt.

Handles, spouts, deck spouts, shower trims, shower heads, wall unions, and hand showers, every element in front of the wall machined to the same tolerance that defines the rough-in behind it.

Through Theory Studio, customization is not an exception. It is a core part of how we work, available at every level, from finish selection to fully bespoke product development, in direct collaboration with designers, architects, and their clients.