Use and Care Guide

Henry
®
Company, 999 N. Sepulveda Blvd., Ste. 800 El Segundo, CA 90245
Tel: [phone] Email: [e-mail]
www.henry.com
Revision Date: 6/28/2017
TECHNICAL DATA SHEET
Henry
®
204
®
Plastic Roof Cement
Physical Property
Typical Value
Test Method
Appearance
Black thick paste
-
Base
Refined asphalt
-
Behavior @ 140 °F (60 °C)
No blistering, sagging or sliding
ASTM D4586
Consistency @ 77 °F (25 °C)
Trowel grade
ASTM D217
Freeze Resistance
Does not freeze
-
VOC
300 g/l maximum
EPA Method 24
Flash Point
105 °F (40.6 °C)
ASTM D3278
Pliability @ 32 °F (0 °C)
No cracking or separation
ASTM D4586
Water by Weight
3% maximum
ASTM D4586
Weight per Gallon
8.5-9.5 lbs.
ASTM D1475
Approvals and Certifications
 Miami-Dade County Approved
 Meets or exceeds ASTM D4586, Standard Specification for Asphalt Roof Cement
Description
Henry® 204® Plastic Roof Cement is a premium, trowel-grade sealant for dry surfaces. It is made from high quality refined asphalt
and spreads easily. It forms a tough film that won’t become brittle and crack in the coldest weather, or run and sag in the hottest.
Features
 Watertight seal
 Flexible and durable
 For most roof surfaces
 Trowel grade
Product Size
1 quart, 1 gallon, 3.5 gallon and 5 gallon
Usage
 Repair holes, cracks and splits on composition, mineral surface cap sheet, asphalt coated, SBS modified and metal roofs.
 Seal leaks and openings around flashings, chimneys, vents, skylights, joints in metal edging, gutters, etc.