Use only the full cut method, also known in the field as full strip method, when installing windows.
This method includes the following:
| • | The replacement of a majority of the urethane adhesive bead. Remove all but approximately 2 mm (3/64 in) of the existing bead of urethane adhesive from the pinch-weld flange. |
| • | Apply pinch-weld primer to any exposed painted areas on the pinch-weld flange. |
No mounds or loose pieces of urethane adhesive should remain on the pinch-weld flange. Do not remove all traces of urethane adhesive.
Important:
• If corrosion of the pinch-weld flange is present, or if sheet metal repairs
or replacements are required, refinish the pinch-weld flange in order to present a
clean, primer-only surface. • If paint repairs are required, mask the flange bonding area, prior to
applying the color coat, in order to provide a clean, primer-only surface. • Appropriate materials for these primer applications are typically 2 component
catalyzed products. Use materials such as BASF DE15®, DuPont 2610®,
Sherwin-Williams PSE 4600 and NP70® and Martin-Semour 5120 ,5130®
, PPG DP90LF SPIES/HECKER 3688/8590 - 3688/5150 - 4070/5090
STANDOX 11158/13320 - 14653/14980 products are approved for this application.
Follow the manufacturer's directions for the mix, the application, and the drying
times. • After repairing the opening as indicated, shake the pinch-weld primer
black #3 well. Using a new dauber, apply the primer to the primed surface of
the flange in the bonding area. Allow the primer to dry for 10 minutes.
