8500 5galCODE: RS100

Crossco ® 8500 ™ is a water-base sealer 100% Acrylic elastomeric with a single component, designed with a formation film hybrid system which has the characteristics of super fast-drying, waterproof, immediately water repellent and low water absorption of oil systems with mechanical properties, security, elasticity, resistance to ultraviolet rays and durability of aqueous systems. This high performance product resists cracking and peeling, while offering tremendous durability, and long term life.

Available in: 1 US GAL, 5 US GAL


  • 100% Acrylic Elastomeric
  • Change blue to Ultra White
  • Super fast dry
  • Reflects sunlight and Reduces the internal temperature
  • Reduce energy costs.
  • Supports light rain after 15 minutes of applied

For waterproofing and to protect a various roofs, in a good condition, likes: roofs of asphalt, built-up, polyurethane foam, concrete, metal, tar and gravel or asphalt shingles. Crossco ® 8500 ™ reflects sunlight and reduces the internal temperature and reduce energy costs. Energy savings may vary based on geographic location and the individual characteristics of the structure. Contact Max Chemical, Inc. at 1-888-782-7937 for more information.

Ensure all edges are completely seal and repair including parapet, beams, columns and walls. The reflectivity of any roof product can increase or decrease depending the maintenance of the product, the age and accumulation of dirt or germs. Some materials are not compatible with this product. Apply a one coat every five years to maintain life warranty.



Cleaning: Ensure the roof is clean. Wash the ceiling to high water pressure machine with a mild detergent to remove all loose particles such as; gravel, dust, old sealer, grease, wax and oil. Remove the fungus, silt, mildew and algae with a mixture of water and Crossco ® Crosscrete ™.  Scrub the surface with a brush and rinse with water and let dry completely.

Repair cracks and joints: Repair all the cracks, joints, and all stationary objects such as; sanitary pipe, legs of antenna, anchors, glass blocks, and eaves. Repair with Crossco ES2000 Crack Filler and fiberglass mesh, apply with a spatula, over cracks, seams, joints and around every stationary objects about to 2 inches of each side.Let dry 24 hours before apply the sealer.

Areas with pounding water: Crossco ® 8500 ™ is super resistant to standing water areas but if you have this condition is must be repair. In areas where accumulates water for more than 48 hours add new drains or any other form of correction. For repair use CROSSCO CROSS-QUICK, follow the product's instruction. When the accumulate water evaporates dirt particles remain in the roof and causing excessive dirt. If this areas was not corrected you has been apply one coat of roof sealer every year.

APPLICATION METHOD: Choose a clear, warn and sunny day. Don't apply  after 3: 00 PM. or presence of  low temperatures. Apply only at temperature above 50 ° F. The sealer can withstand light drizzle after 15 minutes of apply, but be sure to protect the rain at least 6 hours after apply. Apply with a thick hair roller or a unit of pumping without air. Place product on the surface and spread evenly to be suggested rate. Make sure that all edges are completely seal. Some materials are not compatible with this product.  The 15 minutes dry time depends on the thickness, humidity and temperature. Do not walk on the sealer before 24 hours after apply and apply  in opposite directions. Do not dilute the product. Clean the equipments with soap and water.

Concrete roofs: Repair holes or any weakened area of the surface with a good quality cement. Paint over the area to be repair with Crossco ® Permabond Premium ™ and let dry. In the cement mix add one gallon of Crossco ® Acryl B-60 - A ™ for each 50 pounds of cement; apply the mixture and let dry. Repair cracks and areas with stagnant water. Apply two coats of Crossco ® 8500 ™. Let dry 24 hours between coats.

Metal: Remove the rust with Crossco ® Rust Off ™. Replace the loose screws and cover the old with Crossco ES2000 Crack Filler. Let dry and apply two coats of sealer, wait 24 hours between coats.

Polyurethane foam: Foam must be in good condition. Apply two coats of Crossco ® 8500 ™ and wait 24 hours between coats.

Built-Up: Remove all the loose gravel, clean the roof and repair cracks with Crossco ES2000 Crack Filler and fiberglass mesh. Apply two coats of Crossco ® 8500 ™. Wait 24 hours between coats.

Asphalt roofs: Clean the surface. Be sure to remove all the dirty, oil and grease. Repair the cracks. Do not use in new or fresh asphalt. About asphalt shingles, make sure all the edges are completely seal and repair. Apply two coats of Crossco ® 8500 ™. Wait 24 hours between coats.

APPLICATION RATE: Apply at a rate of 65 sq.ft. per gallon for the first hand. and 65 sq.ft. per gallon for the second. Application rate may vary depending on the porosity of the surface. Calculate the amount of necessary pails; divide the area of the roof between 325 and multiply the result by two. One pail is equal to five gallons.

To maximum the reflectance for longtime; the roof sealer must be maintenance clean, free of leaves, dirty or any stranger material. Clean your roof annually with a fine hair broom and house normal water pressure. Attentions the areas with pounding water because required additional maintenance. Apply one coat every five years for maintain the lifetime warranty.



  • Appearance: Blue liquid
  • Solids: <60%
  • Application rate: 60-65 sq.ft/gal
  • Specific gravity: 1.47
  • wt/gal: 12.28 lbs./gal
  • pH: 9-10
  • Warranty: Lifetime


For chemical emergency only, call Chemtrec 1- 800-424-9300

The manufacturer’s liability in connection with the sale of this product extends only to the replacement price.

To request information about MSDS please contact us here

Contact Us

Max Chemicals
Plant & Warehouse La Brisa No. 6
Urb. Sabana Llana, Río Piedras, 00924
Phone: (787)765-6100
Fax: (787)753-1735

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