Author: Rob Brennan

September 22, 2017

I think I’ve mentioned before that it has been a once-in-a-lifetime opportunity to work with an amazing artist and sculptor on their net zero, passive house.  We took the day to visit the site in New Jersey and it was thrilling to walk through these spaces that as complicated as they were in 2D, I was able to create the 3D visualization in my head to successfully build a set of construction drawings.  But there is nothing like walking through the actual spaces that now physically exist.
So many great things happening with this project – foam-free and net zero; perlite under slab; pre-manufactured wall trusses as the insulation cavity; low-cost, DIY construction techniques; and creative use of color and material.
I can’t forget to add the experience of exceptional lunches from the garden with every visit!

May 18, 2017

We are excited to begin construction on this Net Zero, Deep Energy Retrofit of a 1900’s bungalow set on an amazingly gorgeous, perfectly oriented site on the Severn River in Annapolis.  We are fortunate to have a client dedicated to efficiency, beauty and quality.  The result will be an extraordinary retrofit of a completely inefficient, moldy, run-down house into a foam-free, healthy, zero-energy home.  We are wrapping the existing exterior framing – wall and roof – in 5″ of mineral wool,  replacing and relocating windows with high-performance, triple-glazed windows and completely air sealing to create a Passive House level shell.  We are employing fixed and operable shading devices to provide necessary shading. Materials and design inside and out are natural, durable and environmentally friendly.  This project is another in collaboration with Michael Hindle of Passive to Positive.

May 5, 2017

One of the cool things about collaborating with a sculptor on the design of his house, is that you are privileged to be part of amazing, individual moments that punctuate the experience of the house.  One of these occurs at the house’s central stair going from basement to the second floor.  This stair was a collaboration between artist’s sketches overlaid with architect’s responsibility to meet building codes and be structurally sound.  The result being the ultimate definition of architecture – form and function are interdependent.

March 20, 2017


4. Swap old counter tops with eco-friendly ones
If you plan to install an island or replace the old counter tops, try and go green. Green materials not only reduce the carbon footprint, they also give a distinct look to the kitchen. Recycled paper (refer picture), recycled steel, concrete, engineered stone etc. are interesting and distinct materials you could consider. 

January 6, 2017

Our Net Zero, Passive House, Foam-Free home in New Jersey is taking shape!  The 2×6 framing has been completed and the plywood air barrier installed and taped.  Taping and air sealing the various overhangs and angles has been a challenge, but thanks to the diligence of the owner and Michael Hindle of Passive to Positive, the initial blower door test is set up to be a success!
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January 2, 2017

We are thrilled at the success and completion of our first Foam-Free, (near) Net Zero, Passive House in Western Maryland.  The home is currently in the final stages of testing, certification and interior finishing. Most of the progress can be followed on their website, it’s nicely detailed and as such might offer good inspiration to those DIY types. It has been an educational process with material usage, system selection and install, air sealing and insulation, window install and team collaboration.
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The views and placement of the house are extraordinary and achieve the homeowner’s goal of a comfortable, accessible, high performance home designed to view the meadow, marsh and forest.
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For more photos of the final walk-thru, visit the project page.

August 3, 2016

Thank you to all of our clients, colleagues and friends for your support after the Ellicott City floods. It is so sad to see the devastation of this beautiful historic town. Our building seems to have faired well but we are not able to go back in for the foreseeable future. We are setting up temporary operations in Rob’s Catonsville home and will continue to service our clients in full capacity. Please email, message or call our cell phones for contact!
Rob, Carri, Lili and Kathryn

May 26, 2016

We are helping to realize a sculptor’s design of the Honeycomb House.  The project is designed to meet Passive House Standards, be Net Zero Ready and will be completely FOAM-FREE. It is a pleasure and a challenge to be part of this creative venture with Michael Hindle of Passive to Positive and Daniel Gantebein, sculptor!
We are thrilled that this project is now under construction.  The owner is serving as general contractor and has overseen the successful initial pour of the basement wall!

As well as the install of our foam-free foundation using perlite under the slab.

The StegoWrap vapor barrier was used and the slab was poured.

Given that this was our foundation plan, I’d say so far, so good!
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March 2, 2016

Carri and Michael’s home renovation is being featured as a Guest Blog on Green Building Advisor!
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