T-Lok Barkwood

T-lok Barkwood has been revolutionizing home exteriors for 30 years with its signature beauty and durability. The bottom line is that it's straight, tough, high performing and long lasting.

Its .048" thickness delivers a panel that goes on straight and stays that way. It offers damage control in a big way with resistance to bumps and bruises over the long haul. Plus, it's tight, secure and weathers sun, rain and nature's other little surprises with ease.

Exclusive T-Lok System
Mastic's T-lok technology sets the standard for performance for locking siding. Its proven track record has earned a 30-year reputation as the most recommended siding among contractors. It delivers a positive locking action that assures panels hang straight, join tightly, and resist blow off, even in high winds.