UGL® NuDECK® Roof Cement

UGL® NuDECK® Roof Cement

UGL® NuDECK® Roof Cement is a tough, flexible sealant formulated for cementing and waterproofing chimneys, dormer flashings, valley joints, and all types of roof seams. Its elastomeric and adhesive properties enable it to resist variations in temperature and weather, and remain pliable and resilient for years to come. Use with confidence on wet and dry surfaces.

UGL® NuDECK® Roof Cement Application

Quick Overview

Product Features:

  • Latex base
  • Low odor
  • Complies with all current VOC requirements
  • Ready-to-use caulk
  • Sizes: 10.1 ounce cartridge
  • Coverage: 25 linear feet with a .25 inch bead
  • Cure time: 12 hours


  • Asphalt
  • Metal
  • Cement
  • Slate

Ready-Mixed Colors

Black Black

Please note, colors are RGB web approximations of the actual shades.



All surfaces to be caulked should be clean and free from oil, grease, rust, dirt, mud, slag, paint, and loose particles* (such as stones, gravel or pebbles) before applying UGL® NuDECK® Roof Cement.


UGL® NuDECK® Roof Cement may be applied to wet or dry surfaces when air and surface temperatures are above 50°F. If applied to a wet surface, all puddles of water must be removed. UGL® NuDECK® Roof Cement normally cures in 12 hours. Application under conditions of extreme dampness or high humidity prolongs drying, making the sealant vulnerable to driving rain.

Cut the end of the plastic spout at a 45-degree angle to yield your desired bead size. UGL® NuDECK® Roof Cement should be applied directly over the crack, using a standard caulking gun. Use a trowel to smooth the caulk onto the surface. An application rate of .25” bead of caulk will yield approximately 25 linear feet per each 10.1 ounce caulking cartridge. The coverage rate may vary depending on your desired thickness and the surface to be caulked. UGL® NuDECK® Roof Cement must be dry before it is exposed to water.


Dispose of contaminated absorbent, container and unused contents in accordance with local, state and federal regulations.

USAGE STATEMENT: Prior to use, carefully read the product label and follow the directions. For technical information, warnings, cautions, notices, and additional information, download and read the documentation available on this website.

* WARNING: If you scrape, sand or remove old paint, you may release lead dust. LEAD IS TOXIC. EXPOSURE TO LEAD DUST CAN CAUSE SERIOUS ILLNESS, SUCH AS BRAIN DAMAGE, ESPECIALLY IN CHILDREN. PREGNANT WOMEN SHOULD ALSO AVOID EXPOSURE. Wear a NIOSH-approved respirator to control lead exposure. Clean up carefully with a HEPA vacuum and a wet mop. Before you start, find out how to protect yourself and your family by contacting the National Lead Information Hotline at 1-800-424-LEAD or visit