TDS

Henry Company 999 N. Sepulveda Blvd., Ste. 800, El Segundo, CA 90245
Technical Services - Phone: [phone]
E-mail: [e-mail] www.Henry.com
Rev. Date: 04/06/2017
Henry® 887 TROPI-COOL® 100% SILICONE WHITE ROOF COATING
Product Size
1 GALLON, 5 GALLON, 55 GALLON
Shelf Life
Unopened, 24 months from date of manufacture when stored in a cool, dry, and shaded location.
Usage
Coating can be used on many different commercial or residential roof substrates to reflect the sun's heat and UV rays, as well as to help seal
and protect the surface. It works well on low slope roofs and is suitable for pitched roofs. Acceptable roof types include:
• Aged asphalt roofs – including Built-Up Roofing (BUR) and Modified Bitumen (MB)
• Aged single-ply and rubber roofs, including TPO, EPDM, PVC, and Hypalon® roofs
• Spray Polyurethane Foam (SPF) roofs
• Metal roofs
• Concrete roofs
• Recoating previously coated roofs
• RV, trailer, and mobile home roofs
Not recommended over shingles of any kind.
Application
CLEAN: Before coating the roof, use a pressure washer or high pressure nozzle and water hose to wash the roof with a non-filming detergent,
such as TSP or TSP substitute. Use appropriate pressure and take caution not to inject water into the roof substrate during washing. In areas
with stubborn dirt, grease, or other contaminants, use a stiff bristle brush or broom to scrub the areas clean with additional water and non-
filming detergent. Treat algae or moss. The most effective method of cleaning algae and moss from a roof is with a 50:50 mix of laundry
strength liquid chlorine bleach and water. Apply with a sprayer and allow the solution to dwell on the roof surface for 15 to 20 minutes, and
then rinse thoroughly with low pressure water. Extended dwell times may be necessary, however, avoid letting the solution dry completely as
this may prevent complete rinsing. Take proper precautions to protect landscaping and surrounding areas from the chlorine bleach solution.
Use appropriate personal protective equipment when working with chlorine bleach. In severe cases, it may take more than one bleach
treatment to kill all of the moss. Give the roof a final rinse to ensure it is free of all detergent or anything else that could affect adhesion.
Allow roof to dry completely before application. Using a leaf blower or broom, clear any remaining dust, dirt, debris, and foreign material that
may prevent proper adhesion. Apply a test area of coating over the existing membrane to verify absence of bleed-through and proper
adhesion to membrane prior to start of application.
PREP: Repair defects, such as splits, cracks, blisters, deteriorated flashing, cracked metal edging, and any other defects affecting the
watertightness of the roof. As a preventative measure, seal all roof penetrations, curbs, flashings, transition areas, areas where dissimilar
materials intersect, and other areas that could leak with Henry® 884 Tropi-Cool® 100% Silicone Roof Sealant or Henry® 885 Tropi-Cool® 100%
Silicone Seam & Repair Roof Sealant. Ensure all roof drains and gutters are clean and clear, and cut back any vegetation that is growing above
the roof which may cause debris to fall on the roof and clog drains and gutters in the future. On metal roofs, remove rust by wire brushing.
MIXING: Coating may settle during storage. Mix well prior to and during use with a drill and mixing paddle. For 1 and 5 gallon pails, use a
minimum 3" diameter mixing paddle or hand mix with a suitable paddle until consistent viscosity is achieved. In drums, use a minimum 6"
diameter mixing paddle.
RV, Trailer, and Mobile Home Roofs: Check the manufacturer’s recommendations for walking on the roof. Park on a level surface. Ensure
vehicle is turned off with the parking brake set. Secure keys to ensure someone else does not move the vehicle while you are on the roof.