MainStream has over 10 years practice in Passive House Green Building. Passive House is the easiest path to calculating and specifying off-grid, Zero Net Energy buildings of all shapes and sizes. Passive House is the only global industry of energy builders, modelers and experts studying the accuracy of actual performance. If you want to design a building with accurate predictions of real energy usage, you’ll want to use Passive House energy models and professionals. Certified Passive House buildings are:

• Cozy long-lived buildings that hold constant indoor air temperatures.
• Ideal for pet lovers or seekers of asthma and allergy friendly environments.
• Very quiet inside blocking out many common noises encountered from outside.
• Nearly dust-free and clean by the airtightness requirement.

Replace bathroom fans with nearly silent Zehnder whole building purification systems. We design, teach and test the only precise purified air delivery systems that use Energy Recovery (ERV) and Heat Recovery (HRV) to save 90% of wasted energy. When used with our Pro Clima Air Tight Envelope System, indoor air becomes allergy and asthma friendly.

• Zehnder is recognized as the Most Efficient recovery technology.
• The only all inclusive and tested to original design system on the market.
• Easy to install designs include all the parts for Precise Fresh Air to each room.
• Removes point source humidity and dehumidifies bathrooms and kitchens.
• Reduces Heating and Cooling load loss 50% compared to Bathroom Fans.
• Dependable long lasting and easy to maintain systems ensure constant purified air.

We design, teach and test Air Barrier Systems for buildings of all sizes. These systems ensure a dust-free, longer lived, low energy loss envelope. With Pro Clima German engineered vapor open membrane system, easily achieve Passive House Airtightness with 100 year rated materials.

• Defines the airtight layers with a red line and details how to connect them.
• Seals marriage walls, window and door flanges, and all critical airtight connections.
• Quickly airtight OSB, plywood and vapor control layers.
• Vapor open tapes and membranes allows newly constructed materials a path to dryout.
• SUPER STICKY forever tape bonds to wet concrete, woods and almost anything.
• Non toxic, non plastic, acrylic pressure activated bonds within 24 hours forever.
• Acts like Gore Tex releasing vapor into ambient air while preventing bulk water intrusion.