Wakefield, Québec · Ottawa · Gatineau · Outaouais
European Craftsmanship.
Built to Last a Lifetime.
Custom masonry heaters, Kachelöfen, stone fireplaces & fine stonework — handbuilt by a European-trained stonemason in Wakefield, Quebec.
What Udo Builds
Masonry & Stonework, by Hand
From all-day wood heat to fine architectural stone — every project designed and built by Udo Kohrmann himself.
Masonry Heaters
Burn one hot fire; radiate gentle heat for 12–24 hours. Over 90% efficient wood heating.
Learn more →Kachelöfen (Tile Stoves)
The German tile stove — a masonry heater wrapped in handmade ceramic tile. Heating as furniture and art.
Learn more →Custom Stone Fireplaces
Stone and brick fireplaces designed and built by hand for your space.
Learn more →Bake & Pizza Ovens
Wood-fired clay and masonry ovens — standalone or built into a heater.
Learn more →Stone Walls & Architectural Detail
Interior feature walls, retaining walls, garden walls, and fine architectural stonework.
Learn more →Chimney Repair & Rebuilding
Chimney rebuilding, tuck-pointing, flashing, and crown repair.
Learn more →Stone Restoration & Preservation
Restoring and preserving historic stone masonry across Ottawa–Gatineau.
Learn more →Hardscaping & Patios
Flagstone patios, walkways, steps, and outdoor living spaces.
Learn more →Pond Building
Custom stone-lined garden ponds and water features.
Learn more →
Why Keystone
A rare European craft, in the Gatineau Hills
Udo Kohrmann trained as a stonemason in Germany before settling in Wakefield, Quebec. He is one of only a handful of builders in Eastern Canada who can design and build a true Kachelofen and masonry heater — with the engineering and the artistry done by the same pair of hands.
- ✓European training in Germany — kachelöfen & traditional masonry
- ✓Every project built by Udo himself, start to finish
- ✓Custom, one-of-a-kind designs for your space
- ✓Available as a consultant and designer across Canada
Interactive
Design Your Own Fireplace Online
Choose your project, style, stone and add-ons in a few taps — then send it straight to Udo for a quote.
Recent Work
A Few Projects
Kachelofen
Masonry Heaters
Fireplaces
Stone Walls
Ponds
Bake & Pizza Ovens“A masonry heater is over 90% efficient — burn one hot fire and it radiates gentle warmth for up to 24 hours.”
How masonry heaters work →Featured Project
A Living-Room Fireplace in Chelsea, QC
A full living-room fireplace in Chelsea, Quebec — framing and stonework with a Realstone Kiamichi facing and a slate hearth, plus matching stonework on the rec-room foundation. Roughly 285 square feet of stone surface, designed and built by hand.
This is the kind of custom project Keystone takes on. Have a space in mind? Request a quote →
From the Blog
Masonry, Explained
6 min read
What Is a Masonry Heater? A Guide for Canadian Homeowners
How masonry heaters work, why they reach 90%+ efficiency, and whether one is right for your home.
5 min read
Kachelofen vs. Traditional Fireplace: Which Is Right for You?
The German tile stove and the classic fireplace solve different problems. Here is how to choose.
5 min read
How Much Does a Masonry Heater Cost in Canada?
What goes into the price of a custom masonry heater or Kachelofen, and how to budget for one.
Where We Work
Serving the Outaouais & Beyond
Based in Wakefield, Quebec, Keystone Ceramics serves Ottawa, Gatineau, Chelsea, Aylmer and the wider Outaouais — and Udo is available for design consultation and quotes across Canada.
Call: 1-819-459-8000
Studio: 58 Mahon North, Wakefield, QC
Ready to Build Something Beautiful?
Tell Udo about your space and get a free, no-obligation quote.