Starting on Our Rainscreen Over the Radiant Barrier

With the approval of our building wrap by the City of Monte Sereno on Friday afternoon, we started on building the rainscreen over the radiant barrier on the West side of the house today.  Dan Shurter joined the team today and will certainly increase our capacity and accelerate our progress.

Addressing the Issues Relating to Our Solar Rebate

Our rebate under the NHSP expires on September 29, 2011, which is only days away.  On Friday, September 16, 2011, the Building Official at the City of Monte Sereno, Howard Bell, noted that the installation is complete but he would not approve the permit.  Since then, we have been working with the City of Monte Sereno and Pacific Gas & Electric Company to search for ways to connect our solar photovoltaic system to the grid through our temporary electric service but have not been successful.

Bryan met with Brian Loventhal, City Manager, today and Brian requested that we submit a document outlining the situation we are facing, the alternatives, and a proposed solution.  Brian noted that he cannot address the issues relating to our project based on conversations.

So, Bryan focused on documenting the issues relating to our solar rebate and a recommended solution.  He will deliver two copies to the City of Monte Sereno on Tuesday morning.

Starting on Our Rainscreen over the Radiant Barrier

We noticed that the siding on our house was damaged by water and sunlight, and needed maintenance.  To address this, we decided to extend the roof overhang as much as possible and to use a ‘rainscreen’ to reduce damage caused by moisture.  In addition, we included a radiant barrier to reduce the cooling load in the house.

While researching radiant barriers, we learned that a radiant barrier is not effective without a 3/4 inch air gap over the radiant barrier.  This ‘fit’ well with a rain screen design as the back of the siding needs to be exposed to air.  We found a product, Cor-A-Vent, that could go at the top and bottom of the wall that would allow air, but not insects, to flow through the air space.

For siding, we worked with Robert Spaulding (Roseburg Forest Products) and Chris Tritschler (Channel Lumber) to specify and source FSC siding that would be the closest match to the original siding that Eichler used.  Note that the original siding is still on the structure, it is under the Tyvek building wrap and the radiant barrier.  As well, Chris provided the FSC furring strips for the rainscreen.

Front view of the rainscreen design. Air enters at the bottom and flows out the top. Furring strips every 16 inches on center.

Detail of bottom of rainscreen, showing how air enters through the Cor-A-Vent.

Top of rainscreen, showing how air exits.

FSC siding from Roseburg Forest Products.

Roseburg Forest Products' chain-of-custody number is stamped on each sheet of siding.

FSC furring strips, primed and ready ...

Radiant barrier at front of house.

Furring strips on 16-inch centers on West side of house.

Fresh air intake (bottom) and exhaust air (top) that supply air to, and exhaust air from, the house. These air flows go through our heat recovery unit in the Air Handler room.

Detail at top of wall, showing wooden beams above windows.

The first sheet of primed FSC siding is in place.

 

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