DIY Home Improvement, Remodeling & Repair Forum > General Discussion > Introductions > Insulating floor for a house on stilts




Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old 08-24-2008, 05:33 AM  
Charles Theriault
Junior Member
 
Join Date: Aug 2008
Posts: 1
Default Insulating floor for a house on stilts

Hello all

Do any of you have suggestions on how to insulate my floor. I am building a one story stawbale home ¨Post and beam To be built on stilts 3 feet off the ground.

Not sure how to insulate floor. Floor to be built with 9x9 beam construction at every 6 ft square covered with 8x10 tamarack planks 2 inch thick. Would like to build as green as possible.

Thank you

Charles Theriault

Kedgwick New Brunswick Canada



__________________
Charles Theriault is offline  
 
Reply With Quote Quick reply to this message
Old 08-24-2008, 11:55 AM  
mudmixer
Contractor
 
mudmixer's Avatar
 
Join Date: Sep 2006
Posts: 594
Liked 44 Times on 36 Posts
Likes Given: 36

Default

You are attempting to adapt a very old construction method to a new climate. It should be a challenge.

Since you are no stilts, you may be losing some of the advantages of strawbakes including mass and thermal moderation from the earth.

If you are open underneath, you may be forced to go the simplistic, advertising driven "R-value" route since you can expect will probably have cold air under your home floors during the winter.

The use of materials to block cold from pentrating under a living space has been proven in dry cold climates. In our climate (lows of -20F to -40F) uncoated strae bales were commonly used toprevent the intrusion of cold air under a home and to retain the heat from the earth.

You could follow the same process by enclosing the stilt area with straw coated in the same manner as traditional straw bales. You will have to be able to provide some vents that can be closed in the winter.

This has been proven but you may have much more moisture and humidity, which is the enemy of straw bale construction.

__________________
mudmixer is offline  
 
Reply With Quote Quick reply to this message
Old 08-25-2008, 06:38 AM  
inspectorD
Housebroken
HRT_MODERATOR.png
 
inspectorD's Avatar
 
Join Date: Dec 2005
Location: Litchfield, CT
Posts: 4,077
Liked 124 Times on 104 Posts
Likes Given: 304

Default Tough question.

As Mudmixer suggested, this is a tough question to answer. The dynamics of a straw bale home work differently than any other.
You will need to seal the entire underneath with a vapor barrier so the moist air does not migrate into the structure from underneath. I would also have an air exchange system in place to create positive pressure inside the building.
Even telling you this may not be good advice because we cannot see the home, or the conditions of where you live. If you live in a wet part of the country it will not matter what you do.
Closed cell organic and green spray foam is also available. This would be my first choice.
Someone to contact would be www.buildingscience.com for their suggestions on your particular house. You can even get them out for a paid consultation. I would suggest you do this and pay the money now for the right advice. Because it will absolutely cost more to repair it, and get their advice after the fact about how it should have been done. I have been a builder for 25 years, and used them more than once with excellent results.
Please tell us what you decide, and If you contact them as to what they say.

__________________

Just My
Made in the

inspectorD is offline  
 
Reply With Quote Quick reply to this message
Reply


Quick Reply
Message:
Options

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter DIY Home Repair Forum Replies Last Post
Patio roof to house attachment question mobilemike Roofing and Siding 2 09-23-2008 07:31 AM
New foundation, old house Begreen Framing and Foundation 46 08-05-2007 12:19 PM
House On Slab Leaks NIGHTMARE Extrinsicdin Bricks, Masonry and Concrete 2 03-16-2007 04:07 PM
Leaking house on slab NIGHTMARE Extrinsicdin Framing and Foundation 2 03-16-2007 12:04 AM
Cedar shakes and an old spooky house Will Carpentry and Woodworking 1 09-21-2006 08:29 AM