Gaps – Abnormal
What You Need to Know
Abnormal gaps, are gaps that are prominent spaces between boards, non-seasonal (they do not close at any point during the year), and occur at a regular frequency.
Wood is a hygroscopic natural material. It shrinks and swells as it loses or gains moisture in response to moisture changes in its surrounding environment.
Industry Standards
The N.W.F.A. Technical Publication No. A100 “Water and Wood” Page 4 states “Wood is hygroscopic – meaning, when exposed to air, wood will lose or gain moisture until it is in equilibrium with the humidity and temperature of the air.”
Seasonal/Normal Gaps
DEFINITION: Gaps that appear between individual boards, opening and closing with…..
