NX Seal® is a 40 mil, prefabricated self adhering sheet-type waterproofing membrane. It is composed of a tough multi-layer, high-strength polymer film that is coated with a layer of specially formulated rubberized asphalt adhesive. A release liner protects the asphalt and is removed as the membrane is installed. 

NX Seal® is engineered to be a multi-purpose waterproofing sheet suitable for use under siding and exterior plaster. It adheres aggressively to most clean, dry substrates including metal, wood, vinyl and masonry. This advanced system will self-seal around punctures and fasteners to prevent damage caused by water penetration.


  • Uniform thickness for dependable protection

  • Compatible with most construction sealants and primers

  • Eliminates leaks - multiple layers of protection seal out water

  • Adhesive system will not crack or dry-out

  • Aggressive adheres to eliminate movement of water under the membrane

NX Seal® carries a 2-Year Warranty

NX Seal®

ProductProduct IDSizeUnits/CartonCarton Wt.
NX Seal®5143636” x 75’159 lbs
5141818” x 75’259 lbs
5141212” x 75’359 lbs
514099” x 75’459 lbs
514066” x 75’659 lbs

NX Seal® 6" and 9" sizes are a one pallet minimum order product.