Blonde Girl Shows Off Her Body At The Window

Wood - very good - variable - high - high - low - shrinks and swells with humidity changes
vinyl or PVC - very good - good(1) - low - low - very low
Aluminum - bad(2) - good - very low - low - typically >95% - used in most large structures
Steel - medium - superior - very low - high - >98% - typically welded at corner joints