I am looking for some suggestions on how best to achieve an air tight enclosure. Given that our scope includes sheathing the entire exterior of the structure, my plan was to have the OSB sheathing act as THE continuous air barrier. I have learned a lot at GBA, but could use some additional clarity on the following two questions:
1) Other than tape, what is an affordable and effective product for sealing the joints between OSB sheathing? Tape is great but very pricey.
2) What is the best product, or combination of products, to air seal the space between the OSB sheathing and the concrete foundation wall? I realize a gasket would have been preferable, but unfortunately that window of opportunity has passed. The only thing separating the mud sill from the concrete foundation wall is a piece of Grace Vycor with the backing still in place.
Thanks in advance for your help!
GBA Detail Library
A collection of one thousand construction details organized by climate and house part