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Davlin Coatings Capseal 800 Roofing Mastic Sealer

Davlin Coatings Capseal 800 Roofing Mastic Sealer is a specially formulated, highly flexible, acrylic modified waterborne emulsion used to seal asphalt on parapet walls, flashing, and repair details.

Product Type: Sealer, Waterborne Coating

Features: Cleanable, Cost Effective, Excellent Initial Seal Strength, Excellent Seal Properties, Good UV Protection, High Flexibility, Low Odor, Service Life Extension

Application Method: Brush, Spray

Chemical Family: Acrylics & Acrylates

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Knowde Enhanced TDS

Identification & Functionality

Chemical Family

Features & Benefits

Features & Benefits
  • Seals in the asphalt preventing it from spreading overthe sides of the building
  • Locks in the black asphalt while permitting thesolvents in the asphalt to escape slowly
  • Prolongs life of asphalt protecting it from U.V. degradation
  • Excellent waterproofing characteristics
  • Can be applied immediately while asphalt is fresh
  • Lower installation and material costs and lower lifecycle costs
  • Costs less per linear foot than metal caps
  • Easier and faster to install than metal caps
  • Eliminates risk of repainting where oxidized asphalt hass bled over the parapet onto the sides of the building
  • Water-base for easy clean-up and low odor
  • Capseal 800 is designed to be applied directly over freshly applied asphalt on parapet wall caps, sides, flashing, and repair details. It pre- vents the black asphalt from bleeding through and prolongs its life.

Applications & Uses

Application Method
Applications & Uses

Application Procedure

Do not apply Capseal 800 over oxidized asphalt. Apply only over freshly applied asphalt.

  • Brush Aplication: Apply Capseal by brush at a rate not to exceed 75 square feet per gallon. Extend Capseal at exterior edges a minimum of 1 inch beyond asphalt. Do not thin. Clean ith water.
  • Spray Application: Flush all equipment with water before use. Do not thin with water. Spray apply a wet coat in even, parallel passes. Overlap each pass 50 percent to avoid holidays, bare areas and pinholes. If re- quired, follow with a cross spray at right angles to first pass. Apply at a rate not to exceed 75 square feet per gallon. Extend Capseal at exterior edges a minimum of 1 inch beyond asphalt. On rough surfaces, back roll first coat to ensure that coating is pushed deep into surface. Clean equipment with water or water and detergent immediately after use. Drying time: dry hard in 1 hour @75°F, S0% relative humidity.

Application Equipment

 The following is a guide; suitable equipment from other manufacturers may be used. Changes in pressure and tip size may be needed for proper spray characteristics.

  • Airless: Standard equipment such as Graco Bulldog Hydra Spray 30 or 45:1 pump with a 0.025 0.031 inch fluid tip.
  • Conventional: Industrial equipment such as Binks I: I Saturn pump or equivalent with air control cut-off, a material hose 3/4 inch ID minimum and an air hose 1/2 inch ID and 50-75 p.s.i. air pressure minimum. Heavy mastic spray gun such as Binks 7E2 with 1/4 inch fluid tip or larger and slotted nozzle.
  • Brush or Roller: Suitable for waterborne coating. Multiple coats may be required to achieve specified DFT. Roller nap will vary according to texture of substrate and thick- ness of coat.

Properties

Typical Properties
ValueUnitsTest Method / Conditions
Accelerated Weathering (5000 Hrs)no chalking, no sheenloss, no degradation, no discoloration14 ASTM D822
Alkali ResistanceNo effect10 Fed. Spec TT-C-5558, GSA ex. 1
Coats1.0
Curing MechanismAir Dry
Dry Film Thickness Per Coat8 - 12.5mils
Flash point (SETA)min. 215°F
Fungus Resistanceno growth11 Fed. Std. 141 [6271], note 2
Heat Stabilityno change12 Fed. Std. 141 [6051]
Impact Resistancemin. 60in-lb8 Fed. Std. 141 [6226]
Low Temperature Tensile Elongation (0°C)600.0%3 ASTM D2370, 1 in./min.
Moisture Vapor Transmission (20 mils DFT):1.2perms4 ASTM E96, Proc. B
Peel Adhesion (Concrete)48 psi5 ASTM D413
Recommended total DFT16 - 25mils
Resistance to Ponded Waternofilm degradation
Resistance to Wind-Driven Rain (min.100 mph)No Weight Gain13 Fed. Spec TT-C-5558, 4.4.7 min. 95 mph req.
Salt-Spray Resistanceno rusting9 ASTM D1654
Solids by Volumemin. 60%7 by application
Tensile Elongation (Break)1400.0%2 ASTM D2370, 1 in./min.
Tensile Strength2400.0psi1 ASTM D2370, 1 in./min.
Viscosity120 - 135KU6 ASTM D562
VOC75.0g/L

Safety & Health

Limitations

Limitations

  • Do not apply Capseal 800 when surface tempera ture is below 45°F. When surface or air temperature exceeds 100°F.
  • Do not apply during, or 24 hours preceding, inclement weather including rain, fog, mist or freezing temperatures.
  • Do not apply directly to contaminated, damaged or powdery surfaces.
  • Do not apply to any surface previously coated with a silicone water repellent or other type of release or curing agent.
  • Do not apply when a vapor barrier is required.
  • Do not apply on exterior below-grade surfaces. Capseal 800 will freeze and become unstable at tem- peratures below 32°F.
  • Do not ship or store in any area where freezing may occur.
  • Do not apply over water-saturated surfaces.
  • Do not apply over surfaces contaminated with materials which can act as release agents.
  • Do not apply over surface which contains bacteria, mold or mildew.