Sauna Build - From Start to Finish by Glenn Auerbach

Sweat Equity: Build Your Own Sauna While Keeping Your Cool. 

This book provides step-by-step instructions, insider tips, and a few laughs along the way for sauna enthusiasts looking to embark on building their own sauna. Whether you're a DIY newbie or a seasoned builder, Glenn Auerbach's book walks you through the process of creating your own backyard retreat with roots to Finland.