Seal roof pipe penetrations without caulking using the No-Calk aluminum roof flashing. The self-sealing rubber collar slides down over the vent pipe for a watertight fit, and the rustproof stamped aluminum base shapes easily to match the roof profile.

• Fits 4" copper, cast iron, or PVC vent pipe
• 12" x 15" stamped aluminum base
• Rustproof .032" thick aluminum - hand-formable to roof profile
• Self-sealing rubber collar - no caulk required at the pipe
• Rated for 180 deg F continuous heat exposure
• Base accommodates roof pitch 0-40 deg. (up to 10/12 slope)
• Not for hot-mopped or built-up roofs

Tip: 4" flashing is used on main soil stacks in larger homes and on commercial drainage stacks. The larger base needs more roofing nails around the perimeter - keep the nail line within the upper half of the base so the lower half stays under-shingle and water continues to shed off.

Note: Do not apply petroleum-based caulk, sealant, or paint products to the flashing - they degrade the rubber collar and the aluminum's protective oxide layer.