Berger Roof Shield Bonding Primer is an elastomeric acrylic waterborne, latex based, high resin content formula that contains no fillers or pigments. It is designed to prepare roofing surfaces for a finish coating. Berger Roof Shield Bonding Primer rejuvenates, revitalizes and strengthens the surface to which it is applied, helping to prevent cracking, efflorescence, spalling and segregation.

Surface preparation:

• Clean exterior surfaces to remove any previous coatings, dirt, grease, and other foreign materials
• Remove loose paint and powdery substances
• Patch any holes, cracks, seams, imperfections with Berger Premium Acrylic Caulk or All Purpose Sealant
• For metal surfaces remove all foreign matter before priming
• Rusted and uncoated metal must be primed with Berger Red Oxide Primer
• Use a degreaser on galvanized or coated metals which have oils or surface treatments

Application Procedure:

• Stir well before using
• Do not apply when humidity is very high or when coating will be subjected to rain or heavy dew
• Apply using brush, roller or spray
• Spread primer uniformly. Spread Rate will vary depending on substrate
• Apply a coat between 10 to 16 mils wet film thickness
• Wait at least 4 hours before applying a compatible paint or coating
• For airless sprayer application use at least a 1 gallon per minute piston type airless sprayer with a minimum tip size of .021
• Remove all line filters and gun filters before spraying

Tips: No thinning required.