SUPERBASE (HS) ® is a one-part water-based acrylic coating that is easily applied without environmental concerns, and used as a base coat for either SUPERTHERM ® or SUNSHIELD ® . SUPERBASE (HS) ® can be used as a base coat to seal tar, asphalt, shingles, rubber, concrete, or wood roofs.


Surface must be clean from oil, rust, grease, salts, and films.
  1. Use general degreaser if needed.
  2. Clean surface using TSP (tri-sodium-phosphate) or a citrus cleaner to release dirt and degreaser residue.
  3. Pressure-wash if possible @ 3500 psi.
  4. Salt contamination on a surface can come as a result of salt water, fertilizers, and car exhaust. Use Chlor*Rid or equivalent to decontaminate surface if salts are present. Acceptable levels: Nitrates: 5-10 mcg/cm², Sulfates: 5-10 mcg/cm², Chlorides: 3-5 mcg/cm²

Surface must be completely dry before applying.
  1. SUPERBASE (HS ® must be applied during proper temperatures (below) and the prescribed overcoat window of the coating over which it will be applied.
  2. Maximum Surface Temperature when applying: 150°F (65°C)
  3. Minimum Surface Temperature when applying: 40°F (5°C)
  4. Maximum Surface Temperature after curing: 300°F (149°C)
NOTE: Use RUSTGRIP ® as a primer when needed. Refer to RUSTGRIP ® technical data sheet for overcoat window.
NOTE: If pack rust or mill scale exist, it must be removed by grit blast, power tool or needle gun. Once removed, begin with Step 1 (power wash).

Mobile Homes:
  1. Use Mastic Sealing Tape over all leaks.
  2. Apply SUPERBASE (HS) ® over the tape.
  3. Apply SUPERTHERM ® over the entire roof for insulation.


SUPERBASE (HS) ® should be mechanically mixed or mixed by hand for three minutes, then applied.

SUPERBASE (HS) ® can be applied by brush, roller or spray; however, the preferred method is by air or airless sprayer. It should never be applied directly over rust, nor should it ever be diluted or thinned.
  1. If application is by brush, use a soft bristle brush.
  2. If application is by roller, use a 1/4 inch nap roller.
  3. If application is by spray, use a standard airless sprayer (2 gallons/minute at 3,300 psi.) with a .029-.033 tip.

NOTE: The number of applications and the thickness of each should be in accordance with the job specifications.
NOTE: All filters should be removed from both the gun handle and spray machine prior to application, as they will trap the ceramics.
NOTE: Temperatures must always be a minimum of 5 degrees above the dew point during application.


  1. One hour to touch at 70°F. and bright sun.
  2. Over-coating window begins at four hours at 70°F.
  3. Fully cures in ten day


  1. Apply between 50°F. and 100°F.
  2. Store between 40°F. and 100°F.

  1. After completion, spray system should be cleaned with soap and water.
  2. After completion, brushes and rollers can be cleaned with soap and water, stored and reused.

ALL ROOFING: (used as base to fill cracks and seal) 30 sq.ft./gallon

WHEN USED IN CONJUNCTION WITH MESH: first coat applied with mesh laid into coating: 50 sq.ft./gallon, second coat applied over mesh: 100 sq.ft./gallon


Application Video

Asphalt Roof Application    Metal Roof Application

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