Specification

As par t of our Ho mebrella
TM
Advanced Mois ture
Management System, Thermo-ply
®
Exterior Wall Sheathing
is a vital component as it protects the wall envelope and
preserves the integrity of what’s inside, i.e. ,cavity insulation,
studs, drywall, etc.
Thermo-ply’s core is composed of high quality,
long fibered, specially treated water and weather
resistant plies. These plies are pressure laminated
with a special water resistant adhesive. Thermo-
ply’s moisture content is measured and controlled
constantly during the manufacturing process by a
computerized system to ensure the highest quality.
Covalence conducted an in-
house study which showed that
Thermo-ply significantly outper-
formed OSB sheathing in water
resistance. A 24 hour soak test
revealed OSB gained almost
30% in moisture and swelled in
thickness by 30% while Thermo-
ply consistently gained less than
12%.
Because of Thermo-ply’s
1
/
8” thickness, a tight seal is formed to
the framing members, producing excellent protection against
water intrusion.
Foam and fiberboard sheathings tend to be spongy
because of their composition. This makes it difficult to fasten
the edges tightly to the wall frame, thus creating gaps and
cracks for water to potentially enter.
Water and Weather Resistant Plies
Protection against Water Intrusion
Outperforming the Competition
After Before
OSB - Swelling
No
Gap
Small
Gap