Prices, Promotions, styles, and availability may vary. Our local stores do not honor online pricing. Prices and availability of products and services are subject to change without notice. Errors will be corrected where discovered, and Lowe's reserves the right to revoke any stated offer and to correct any errors, inaccuracies or omissions including after an order has been submitted.

PROLinx 40-in x 300-ft 300-sq ft Synthetic Roof Underlayment

Get Pricing & Availability

  • Use for new or re-roof applications

  • Stronger than felt — it’s 25x stronger than 15 lb felt and 12x stronger than 30 lb felt

  • Safer to walk on in various conditions with its proprietary non-woven walking surface

Best Price. Guaranteed
Find a lower price on an exact item? We'll match it. Some exclusions apply.
Price Guarantee
FREE Returns
Return it in store or ship it back for free. Eligibility rules apply.
Return Policy
FREE Shipping
Delivery is on us for orders over $45. Some exclusions apply.
Shipping Details