So I discovered this small article that details the processes that have helped keep some buildings from 12th century Scandinavia intact for almost a thousand years. It’s not Viking Age, but it does fall into the Literary Age. 🙂 And I think it’s just fascinating to see how you can prep your lumber before cutting down the tree. And that it will last so long!
For something building-related for the late Viking Age, I suggest learning more about the Viking House at the University of Wisconsin — Green Bay (on its Facebook page you can see the new paint job). I had the honor to be able to stay overnight at this house (built by Master of the Laurel, Guttorm meistari Arneson, his articles and class handouts can be found at the Guest Hall at Eithni’s Keep) thanks to Master Edwin atte Bridge, in the fall of 2012, before it was donated to the University. It is an experience I still remember and draw from. I hope to get to visit it in its new home one of these days.
Guttorm meistari has an material on the building technique Grindbygningen, as well as References on Viking Age Buildings, and Longhouse slides.