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Author Topic: Building a cabin with green lumber?  (Read 15089 times)

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Offline GDinMaine

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Re: Building a cabin with green lumber?
« Reply #20 on: July 04, 2013, 05:02:06 PM »
Just account for shrinkage in the joints and siding.
YH

Thanks for the input guys.  I have been hoping to tell my friend about your responses but he is probably off fishing some place with no phone or such gizmos.

I'm by no means a builder so excuse the question.  How do you account for shrinkage in joints and siding and any other important places? 
It's the going that counts not the distance!

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Online Ianab

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Re: Building a cabin with green lumber?
« Reply #21 on: July 04, 2013, 06:40:40 PM »
Quote
How do you account for shrinkage in joints and siding and any other important places?

Main issue will be siding, where you will get noticeable shrinkage in the wide boards. Important thing here is to only nail on one place on the board. If you take a 12" green board, and nail down both sides of it, it will soon turn into a 11 & 1/2" board. Something's going to give if both sides are nailed down.

For example, if you use board and batten, you nail the boards in the middle, and nail the battens over the gap so those nails aren't holding the main boards.  Now your wide boards are free to shrink, and the gap that opens up is covered by the batten. So the boards don't split and nails aren't pulled out or any other grief like that.

It's methods like that that let you use green wood.

Ian
Weekend warrior, Peterson JP test pilot, Dolmar 7900 and Stihl MS310 saws and  the usual collection of power tools :)

Online longtime lurker

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Re: Building a cabin with green lumber?
« Reply #22 on: July 05, 2013, 03:26:51 AM »
Traditional timber building here is almost exclusively green framed... but then if you've ever tried to drive a nail into seasoned eucalypt hardwoods you'd know why.
As mentioned joints have to be built to allow for shrinkage. Wood shrinks more tangentally then radially, so you joint to allow for that... ie keep them nice and tight when green, and as much as possible try and avoid a mix of backsawn and quartersawn lumber in the same parts... you dont want some rafters shrinking by 8% with some others between them shrinking by 2% for example. If they all shrink by 8% more or less, it doesn't make a lot of difference to the roof.
Backsawn is generally better in terms of nail holding ability as it dries and shifts.
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Offline slider

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Re: Building a cabin with green lumber?
« Reply #23 on: July 05, 2013, 08:40:07 AM »
what if you put black roofing paper up first then wall paneling over it.After it shrinks a bit you would have a nice contrast between the wood and the black strip.just a thought.
al glenn

Offline WH_Conley

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Re: Building a cabin with green lumber?
« Reply #24 on: July 05, 2013, 03:36:59 PM »
Slider, you will also have another layer to block air infiltration. That boils down to being warmer in the winter.
Bill

Offline drobertson

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Re: Building a cabin with green lumber?
« Reply #25 on: July 05, 2013, 04:31:02 PM »
Slider, this is exactly how one customer does his, 16# felt then sides, it looks pretty good,  david
only have a few chain saws I'm not suppose to use, but will at times, one dog Dolly, pretty good dog, just not sure what for yet,  working on getting the gardening back in order, and kinda thinking on maybe a small bbq bizz,  thinking about it,

Offline ATLGA

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Re: Building a cabin with green lumber?
« Reply #26 on: July 10, 2013, 06:30:08 PM »
what about insects in the wood????   :-\
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Re: Building a cabin with green lumber?
« Reply #27 on: July 10, 2013, 07:17:15 PM »
The bugs that attack green wood are different from the ones that will infest dry wood.

So any bug that is in the green wood is either going to mature and fly away, looking for more green wood, or die as the wood dries out.

Now you could still get an infestation of the dry wood species, once the wood is dry. But that's exactly the same as if the wood was kiln dried first.

Ian
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Offline drobertson

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Re: Building a cabin with green lumber?
« Reply #28 on: July 10, 2013, 07:55:00 PM »
My thought on this always boils down to what did the pilgrim's do? wait for everything to be perfect?  they knew how to chink and live, green is green, and dry is dry,  techniques for both, one must know the differences and make the adjustments, just the way it is,  david
only have a few chain saws I'm not suppose to use, but will at times, one dog Dolly, pretty good dog, just not sure what for yet,  working on getting the gardening back in order, and kinda thinking on maybe a small bbq bizz,  thinking about it,


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