IB Roof Systems IB Bleed Block

• Plasticizer free
• 55% solids by volume
• Excellent adhesion to a variety of substrates
• Special bleed resistant formulation helps retard asphalticbleed through and discoloration of finish coats
• Unique formulation allows breathable film while providinga watertight membrane and permitting trapped moisture toescape
• Low VOC, less than 50 grams/liter
• Available in gray

IB Bleed Block is used as a base coat over granule surfacedasphalts, and modified bitumen to help reduce asphaltic bleedthrough and discoloration of the finish coat and over single ply
substrates to help reduce plasticizer migration and discolorationof the finish coat.

Approximate coverage rate is 1.0 – 1.5 gallons per 100 squarefeet (16-24 wet mils) per pass depending on substrate type androughness.
Yield (1 gal/100 sq. ft.) = 16 wet mils/8.8 dry mils.
See recommendations for specific applications. Yields will varydepending upon system selected and the smoothness andabsorbency of substrate.

Application Equipment
Airless Sprayer:

• Output: Minimum 30:1 fluid to air ratio / 2.5 – 3.0 gal per minute
• Pressure: 3,000 to 4,000 psi
• Filter Screen: 30 mesh or larger
• Spray Gun: Contractor rated for pressure, equipped with a ball-bearing swivel for ease of handling
• Hoses: 3/8” min ID up to 75 ft., 1/2” min ID up to 200 ft., and 3/4”min ID over 200 ft. Use largest diameter at pump. Hoses rated to2X maximum pump pressure. Hose lining should be compatible withcoating and required cleaning materials.
• Gun Hose: 3/8” ID x 6 feet high pressure rated with adequate WPSI.
• Extension: 12” gun extension is recommended
• Orifice Tip: .027” to .039” diameter, wide angled fan angle of 40 to50 degrees is recommended. A reversible self-cleaning type nozzle isalso recommended. Exact office size will vary with temperature of thematerial and ambient temperatures.
• Brush: No reduction necessary. Use synthetic filament brushes. Donot over-brush as material may start to pull.
• Roller: No reduction necessary. Use 1-1/4” nap synthetic rollers.Keep a wet edge to avoid pulling. Avoid rapid rolling which can causebubbling.
• Spraying: When spraying material should be at least 75°F (25°C).Before applying additional coat, the previous coat must be completelydry and cured.

Mixing
No thinning or reduction is necessary. Product may separate aftershipping and storage, though it may still appear mixed. When mixing isnecessary, use a 3⁄4 horsepower or larger electric or air operated mixerwith a blade capable of uniformly mixing container. Use a 3” minimumdiameter mixing blade for 5-gal pails and a minimum 6” minimumdiameter blade for drums. Never mix by hand.

Surface Preparation
The substrate must be free of areas of ponding water, ice, snow, rain or dew, dirt, dust, grease, oil, foreign contaminants or other debris that would inhibit adhesion of coating. If such conditions exist, the roof surfaces should be properly prepared and cleaned using the specified IB cleaning solution in order to receive the new coating system. Mildew must be removed by power washing and scrubbing with a bleach solution of 1 part bleach and 2 parts water. Repeat if necessary. Rinse thoroughly and allow to dry. Most substrates require a compatible primer to be applied prior to the application of the coating. Contact IBRS Technical Department at 800- 426-1626 for recommendations regarding specific applications.

Aged Mineral Cap & Granulated Modified Bitumen: To properlyprepared substrate apply a base coat of IB Bleed Block at the rate of1.0–1.5 gallons (3.78–5.67 L) per 100 square feet (16-24 wet mils). Oncecompletely dry, the IB Bleed Block may be coated with a finish coat of IBAcrylic or Silicone Coating.
Aged Thermoplastic (Hypalon/TPO/PVC): To properly preparedsubstrate apply a base coatof IB Bleed Block at the rate of 0.5 - 1.0gallons (1.89–3.78 L) per 100 square feet (8-16 wet mils). Oncecompletely dry, the IB Bleed Block may be coated with a finish coat of IBAcrylic Coating.
Adhesion Test: Adhesion of the IB Bleed Block should always bechecked. Apply 6” – 12” square of the coating and embed a piece of IBFabric into the coating, leaving a minimum 2” tail of the fabric exposed.Allow 2-3 days for the coating to cure and perform a 90° pull test of thefabric tail to test adhesion of the coating to the substrate.

• Refer to Substrate Preparation guidelines for proper preparation,cleaning and primer roof with any applicable bond enhancing primerbefore commencing with application of IB Acrylic Coatings.
• This product cures by water evaporation only. Do not attempt toapply product when weather conditions are not conducive to drying.Refer to temperature and relative humidity precautions.
• Application of materials with power spray equipment will requiringsome masking and erection of wind screens to prevent over sprayoccurrences and damage to surrounding structures, surfaces,vehicles, property or persons.

Clean up spills and spatters immediately with water. Flush all hoses,equipment, and tools with water followed by propylene glycol to preventunit from rusting.

• 5 gallon Pail
• 55 Gallon Drum
• 275 Gallon Tote