Exterior grade plywoods are ideal for outdoor situations that involve high levels of moisture. We stock Marine Fir, MDO, & T1-11, all in varying thicknesses. Marine Fir is commonly used in high moisture and nautical applications. MDO is often referred to as “Signboard” due to its frequent use as signage. T1-11 plywood is most commonly used as siding on homes and sheds. Other on center spacings can be special ordered.

Marine Grade Fir

ThicknessSizeGrade
1/4″ 4 x 8AB
3/8″ 4 x 8AB
1/2″4 x 8AB
3/4″ 4 x 8AB
Marine Fir

MDO

ThicknessSizeType
3/8″4 x 8Good 1 Side, Primed
1/2″4 x 8Good 2 sides
3/4″ 4 x 8Good 2 sides
Exterior-Plywoods-MDO

T1-11 & Other Exterior Sheets

ThicknessSizeType
3/8″ (11/32)4 x 8Flush, Okoume, Cedar Appearance
3/8″ (11/32)4 x 8Beaded, Yellow Pine, 2″ O.C.
3/8″ (11/32)4 x 8T1-11, Yellow Pine, 8″ O.C.
5/8″ (19/32)4 x 8T1-11, Okoume, Cedar Appearance, 8″ O.C.
5/8″ (19/32)4 x 8T1-11, Yellow Pine, 8″ O.C.
5/8″ (19/32)4 x 8Reverse Board & Batten, Yellow Pine,
12″ O.C., 1-1/2″ channel
T1-11 siding
T1-11