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rockies
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# Posted: 20 Jun 2016 08:01pm
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I had heard of the Japanese technique called "shou sugi ban" which is charring the surface of cedar boards to produce a siding that can last 80-100 years. This couple have found an alternative in an applied pine tar stain.
http://www.greenbuildingadvisor.com/blogs/dept/guest-blogs/siding-and-soffits-blue-he ron-ecohaus?&lookup=auto&V27=&V28=&V29=&V30=&V31=&V32=&V33=&V34=&V35=&V55=&V56=&Taun_ Per_Flag=True&utm_source=eletter&utm_medium=eletter&utm_content=fhb_eletter&utm_campa ign=fine-homebuilding-eletter
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beachman
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# Posted: 20 Jun 2016 08:34pm
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Our original camp was creosoted by my grand father about 70 years ago and about every 8 or 9 years, we have re-treated it. The siding was cedar shingles and they are still like new. The stuff stinks for about 4 weeks and may cause burns if you get it on your skin. You can no longer buy the product in hardware stores due to it's dangerous properties and potential to pollute if not applied properly. The color is a dark brown, almost black and turns brown after a year or two. Sounds like a similar treatment. It is the same stuff they used to soak railroad ties with.
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leonk
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# Posted: 20 Jun 2016 09:20pm
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charring foundation posts has been used in Europe as well.
In this video they use it
https://youtu.be/ErGQ0rXkn74
Don't use creosote, it's pretty bad.
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Don_P
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# Posted: 20 Jun 2016 10:49pm
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That sounds pretty much like the old Viking finishes. That is the finish on many old world timberframes.
I doubt that his flammability test was giving true results, its an accelerant as is linseed oil. I would use boiled linseed myself so there isn't the possibility of it becoming food for fungi which raw linseed can do... although that usually just turns it black 
In the 1830 census several of my ancestors listed "turpentine" as their occupation. In eastern North Carolina they were likely tapping the longleaf pine and extracting the rosin from stumps. That's where the term tarheel comes from.
I've used another light colored finish called LandArk that uses pine rosin in citrus oil, it was ok, smelled great compared to petroleum solvents, but no more long lived than any other light colored exterior finish.
I wonder if wood based creosote is any better than petroleum based creosote bad stuff wise.
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Jabberwocky
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# Posted: 21 Jun 2016 06:14pm
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Hmm... seems a little pricey, and not sure where to get it in USA. Although if it was available, the premium might be worth it if it would really last fifteen years.
How long does typical exterior stain typically hold up?
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Steve_S
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# Posted: 21 Jun 2016 08:46pm
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Linseed, Pine Tar and more available here:
solventfreepaint.ca & solventfreepaint.com for USA
Can get quite pricey and depending on product the reapplication varies...
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Don_P
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# Posted: 22 Jun 2016 11:27pm
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From Jamestown Distributors, they do stock pine tar.
•Genuine Pine Tar is also a topical antiseptic used by horsemen to combat fungicidal and bacterial infections in horse's hooves.
There are many recipes for 'boat soup' and homemade varnishes that include Pine Tar. Mix Pine Tar with Japan drier, boiled linseed oil, and turpentine in appropriate quantities and proportions for a traditional varnish. See the recipe shown below.
JD Homemade Varnish Recipe: An Old Down East Deck Coating Formula
Used on wooden decks for schooners, fishing boats, and porch decks. Makes for an amber finish. To customize the mixture, add more pine tar for a darker color or add less for a lighter color. Allow more drying time for the darker mixture.
* Covers approximately 100 square feet.
Turpentine 1 qt
Boiled Linseed Oil 1 qt
Pine Tar 1/2 pt
Japan Drier 1/2 pt
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Jabberwocky
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# Posted: 23 Jun 2016 09:57am
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If we owned a cabin, my wife would be all over this stuff. I'm seeing her wanting the new gray color (most expensive of course) with a cheerful bright yellow front door 
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