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Hi everyone, New to the forum and these posts are so old I may not get a response, but I can hope.  My wife and I live in SC and are designing a timber frame home. We are a fan of the outdoor exposed posts and beams.  We will be using posts and beam large enough to accommodate the visual effects of the indoor beams, with a 2X6 wall with an inch of exterior beam exposed.  I have read a book "The Craft of Modular Post & Beam" by James Mitchell.  He has a chapter on infill techniques that utilize a expandable polystyrene panel that can be fitted to the stud spacing from the outside of the house on 2x3 studs are recommended and affords a R20 value. I'm assuming I can get a panel 3" and then add 2 inch fiberglass to the 2X6.   Anyone familiar with these EPS panels.  Any new techniques I'm not aware exist?  The timber is southern pine from our land and I have a resource in NC that can provide timbers up to 20 x 20in x 24 ft.  I found a supplier in Washington that can provide kiln dried timbers, but I prefer to cut and sawmill our select cut trees to build this home.  Thanks for you help.

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Hey Doug. I do have half in half out infill. My one story in this publication "Small Wonder" used that technique. It locks the timberframe and insulation systems together better than anything I'm aware of. Ordering timbers from Washington to SC? You can do better than that with your material and I bet we could find some reclaimed. It would make a beautiful mix. I have included logs found on folks property and included them in more frames than I have not. I would love a visit to SC. I am heading to Illinois tomorrow for similar work there. Hope all is well and the new year finds you in a new frame.

Cheers!

Derek

Hi Derek,

 

Thanks for the response.  Found the article in which you were mentioned.  I didn't see any mention of infill system.    I Would like to learn more about the technique that locks the timber frame to the insulation system. 

 

I do have access to reclaimed timbers.  I live in textile country and many mills are being torn down and the brick, wood flooring, posts and beams are being sold. 

 

Respectfully,

 

Doug

Sorry I've come late to the party. Just joined the forums. 

We've recently completed a timber frame home with infill 2X4 walls here in coastal BC. Walls were spray foamed to meet insulation requirements.

We used "Hanno Band" gasket between framing and timbers. This foam gasket comes in a roll and expands 200% once placed. It's a bit tricky to work with, and it's helpful to keep it refrigerated (retards expansion) but it sure does the trick. Any timbers that penetrated the envelope were rabbeted to receive Hanno during joint assembly as well. 

I would however very highly recommend NOT showing unseasoned timbers to both sides, even with gasket. There's just too much shrinkage to keep a good seal no matter the species. We used KD timbers (we also had many direct set windows and wanted to be doubly sure there would be minimal movement). I would not consider using timber above 18% and would prefer 12%.

Hope that helps. 

Hi Chris,

 

Thank you for answering my question.  I appreciate your advice. 

 

Respectfully,

 

Doug

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