Designing Simple and Effective Passive Solar Greenhouses with Rob Avis (PVP088)

Rob Avis Permaculture Voices

Key Takeaways:

  • Orientation.  In Northern hemisphere orient it South or within 45 degrees of South.
  • Higher the glazing transmisivity is, the better it is for the plants.
  • Don’t underestimate the value of good insulation in the walls of the greenhouse.  Rob uses R-20 in Calgary.  Keep in mind insulation doesn’t stop heat loss, it just slows it down.
  • In lower light conditions look to plants that are adapted to growing in lower light conditions.
  • A hoop house may be a viable alternative in lower light conditions.
  • It is very important to have thermal mass in the greenhouse.  Thermal mass absorbs the surplus heat during the date and radiates it back out at night.
  • Know what your goals are for the greenhouse.  Why are you building it?
  • You can’t over-vent a greenhouse.
  • Thermal curtains can cut heat loss drastically through the glazing.


Verge Permaculture Greenhouse

An aerial view of Rob’s greenhouse.



Rob Avis inside his passive solar greenhouse.

Rob Avis inside his passive solar greenhouse.

Verge Permaculture’s Online Passive Solar Greenhouse Course:

Learn the principles of passive solar greenhouse design at your own pace, with a video lecture you can watch over and over again. Then work through our step-by-step manual to create your own design!

The course includes a 36 minute introductory video and a 52 page e-book.

This 52-page e-volume is bursting with Rob’s practical, proven, step-by-step info for planning and building your own passive solar greenhouse. As a mechanical engineer and permaculture design consultant, he’s trained with world-famous experts in the field. He’s distilled that knowledge with his own real-world DIY experience (including mistakes to avoid!). With clear diagrams, easy terminology, and insiders’ tips, he gives all the essentials you need to get started.

You can read about the course at Verge Permaculture.

Each attendee at PV2 will get access to Rob Avis’s Design Your Own Passive Solar Greenhouse Course.



More information on Rob Avis:

Verge Permaculture

Verge Permaculture on Facebook

You can contact Rob and Verge HERE

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