thermal mass heater – Stone House Kachelofen

June 9, 2022March 23, 2023

An Ambitious Project

This was one of the most challenging ovens that Jessica has undertaken. One of our medium sized ovens might contain 100-150 pieces. This one has 250 pieces! This striking oven was conceived of as a room divider between a kitchen and a living room in an historical “New England” style farmhouse.

A maquette was made during the visualization stage of the project.

The completed project as seen from the kitchen side.

The central portion of the kitchen side has a black pizza oven atop a bake oven. On the right hand side is the stove top. The fire chamber below is used to heat both the bake oven and the stove top. Wood is burned directly inside the pizza oven. The heat generated by this side of the kachelofen is not retained in the thermal mass. This means that it can be used year round without overheating the room. All of the features on this side share one chimney. On the left hand side is a ledge that can be used as counter space, or even a cozy sitting nook!

The living room side of the unit is used for heating.

A delicate relief pattern of a swallow accents the living room side of the unit. The inspiration for this pattern was found in a very special piece of jewelry owned by the client. We are particularly pleased by how the lines of the display alcove are mirrored by the fire chamber door. Beneath the door is a wood storage area. This side of the kachelofen is used for seasonal heating.

This sequence of photos shows the kachelofen in various stages of completion.

May 18, 2022May 18, 2022

Crown Corners

The crown corner kacheln are usually the largest pieces in one of our projects. They tend to get made toward the tail end of the production cycle, and because of this there is always a sense of excitement when it’s time to work on them. They are usually the most difficult and time-consuming parts to make. The corners are extremely heavy and unwieldy. Glazing is done by propping them up over a large container and pouring liquid over the piece.

This glaze required three poured coats to achieve the desired effect. This is the application of the final coat.

This glaze yields a beautiful matte black finish with a subtle hint of green.

This is a massive kachelofen. Its overall height is 280cm (9’2″). We are looking forward to seeing it once the bench is built around the base of the unit and the rest of the room is completed!

May 19, 2021May 19, 2021

Final Firing

It always feels great once the last few pieces of a project come out of the kiln. Our natural workflow has been interrupted by the pandemic, and it has often felt like things in the studio are taking longer to get done. Tasiana’s stove is a perfect example of this. Tasiana and Mathew signed off on this design back in September. Under normal circumstances these pieces would have been shipped out in January or February. The extra time involved however, turned into an advantage as we were able to refine the design of two parts of this stove. These refinements will make the installation process smoother!

The design includes a cat motif as part of a decorative garland around the top of the stove. We are extremely happy with how this section has turned out.

The last pieces out of the kiln were the abdeckplatten. These are the tiles that go on top of the stove.

Tiles for the top of Tasiana’s Stove. The “marquee” kacheln showing the date can also be seen here. There are parts for two other projects as well.

If all goes well we will ship this project out by the end of May!

September 10, 2020September 10, 2020

Looking Back to 2012

One of the most important projects in Jessica’s development as a designer of kachelofen was the “Chesapeake” from 2012. This was her first kachelofen that included a heated bench. It was also her first “multi-use” design. The right hand side of the unit includes a bake oven and a cooking surface:

Cecile Davis, a local filmmaker, made this informative and fun video while Jessica and Mario were doing the installation.

Mario and I installing in Easton, MD, 2012
Now that you have seen how I make Kacheln, here is a little video on what goes into installing this Kachelofen. 2012
Posted by Kachelöfen by Jessica Steinhäuser on Saturday, January 14, 2017

The inner firebrick flue system of the oven is typically built in tandem with the outer decorative bricks. In this case Mario and Jessica had to do as much work as possible on the outside of the oven due to a catastrophic shipping delay! Hurricane Sandy had shut down much of the Eastern Seabord, and delivery schedules were completely thrown out of sync. This meant that the European portion of materials had not yet arrived when work commenced.

In the end they were able to make the most of things by taking a day off in the middle of the build!

May 21, 2020May 21, 2020

Round Oven Gallery

We’ve done quite a few round ovens over the years. Here are some of our favourites:

Asta’s Kachelofen features a coat of arms, custom crown and trim, as well as a warming oven.

December 18, 2019December 18, 2019

Victorian Kachelofen Project, part 1

Earlier this year we completed the most ambitious project we’ve ever done, from both a design and logistical perspective! The project was to create a kachelofen/pizza oven/open fireplace unit in a Victorian home.

Designing the unit required a site visit to get a sense of any architectural features that we could include. Several rooms in the house have raised wooden panels with delicate beading. These seemed like the perfect pattern to base our standard kacheln on. We ended up rotating the pattern vertically to better suit the project.

Raised paneling found in other parts of the house

We also matched several other elements of our design to existing house parts.

One of our favourite elements is the doric column pattern that we used for the fireplace.

One of the stated goals of the project was to make something that felt like it belonged in a heritage building. Renovations were still ongoing when we completed our part of the project. We can’t wait to see photographs once the rest of the job is complete!