Washington WSDOT - 9-11.1 - Waterproof Membrane - 12" x 108' - PT4591-12 driveway these mats are built to

these mats are built to last with a lifespan of 5-10+ years

***For use on flat surfaces only***

synthetic thread

The Pyramat 25 is used on moderate slopes and the Pyramat 75 can be used on steep slopes

which simplifies the installation process

Washington WSDOT - 9-11.1 - Waterproof Membrane - 12" x 108' - PT4591-12 driveway these mats are built toWashington WSDOT 9 11. 1 Waterproof Membrane 12" x 108' PT4591 12 Petrotac is a self adhesive paving membrane geotextile designed to protect pavements from moisture damage by providing a stress absorbing interlayer to decrease the development of cracking over time. It is used to treat local pavement distress, including joints and cracks, and can also be used as a moisture barrier on bridge decks. Washington WSDOT Note: This fabric meets the