SecureGrip Synthetic Underlayment

Every Great Project Needs a Great Start

Highly Engineered

Providing an affordable secondary water-shedding barrier for your shingle roof system.

Improves Project Outcome

Rolls out flat, will not wrinkle causing customer callbacks.

Superior Performance

Designed to perform under extreme weather conditions.


We continue to improve our SecureGrip™ products by including an even better U.V. resistance package and additional non-slip technologies to the full line of CMI synthetic underlayments improving on an already well accepted product offering that will continue to differentiate CMI products in a very crowded marketplace. Our new enhanced SecureGrip™ 25 will now be called “SecureGrip30™” with a new and improved 30 year limited warranty. Our new SecureGrip™ PRO, 15 pound felt replacement, comes with its own industry leading 20 year limited warranty. SecureGrip™ MAX continues to be a leader in performance on tough projects and comes with a limited LIFETIME warranty.

Inorganic Construction

100% synthetic construction offers long term moisture protection - doesn’t absorb water and is inert to mold growth.

Easier Installation

33% more coverage per pass across the roof (vs 36” wide rolls).


Synthetic construction resists tearing during roof installation - UV stabilized to resist UV degradation up to 3 months.

Continental Materials