2020 Boise Idaho Real Estate Blog
Plans drawn, now what? Main The Durable Green Home
So now you have a home designer that understands the home is specific to the site, climate, existing site considerations, energy efficient and durable, but also needs to accommodate your needs and desires / budget. where do you go now?

building is a very complex process that changes with technology and other factors all the time. The home in order to be durable needs to be able to control the main damaging factors of Heat Flow, Moisture Flow, and Ultra-violet radiation. So lets start at the bottom. Why do you need a foundation drain?

Industry standard is we dig a HOLE in the ground to put a home into! so we are starting out with problems already, then after the foundation is poured we backfill the foundation without compacting the fill, don't pay to much attention to the vapor barrier and then start framing wood on top of the foundation.

when the home is finished the grade will sink by the foundation and water will run back to the foundation instead of away from it. Also depending on soil types there could be other problems of water entering under the foundation. So lets be pro-active and put a foundation drain that takes water that is or might accumulate at the foundation for whatever reason and takes it away, it costs around $2000 or less now or $5000-$10,000 later to do it right! go to www.nessdrainage.com to see what happens when it is not done right. Grade should be at least 6 inches from siding, and slope away from home. Tony Zornik "A home Buyers Inspection company" always recommends a no water zone or drip irrigation within six feet of foundation. Also the elevation of the home should provide adequate drop to shed water away from home. I wish I had a nickle for every home I see setting in a hole (lower than street or sidewalk) where do these people think the water will go?? Can you say LAKE!!! there should also be swales to take the water away. erosion controls should be implemented by providing vegetable swales, plants, retaining walls, etc.  Foundations should be tall enough to allow access and code clearance on ducts, and framing form the ground. two foot tall stem wall with wood joists hung down inside the foundation will not allow enough room. Vapor barrier should be installed over interior footings, attached to stem wall above the cold joint ( or cover stem wall)  and seams should be lapped minimum 12 inches both ways or taped. I like a white visqueen because it looks cleaner and reflects light for a brighter crawl when accessing. Next week-Wall assemblies. 

Posted by Tad Duby at 7/3/2007 12:22:00 AM
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Michelle Penick, Build Idaho Client Real Estate Services

Michelle Penick

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