Installation Guide

Step 1: Inspect Unit
Before Installation:
A) Remove all shipping packaging material (blocks, pads, protectors, stretch wrap)
B) Inspect unit for any damage or defects.
C) Verify that the door unit is the correct size and configuration.
D) Contact the nearest Woodgrain Millwork distributor if there is a problem.
Step 2: Prepare Rough Opening
Note: Disregard steps B, F, G, H, and I if No Nail Fin Installation is utilized.
A) Measure and verify the size of the rough opening. The rough opening should be 3/4”
larger in width and 1/2” larger in height than the frame size.
B) For doors with clad exterior casings, additional nailer studs may be required around the
perimeter of the rough opening.
C) Verify the rough opening is flat, plumb, level, and square. (Fig. 1)
D) Take diagonal measurements to
check for square. (Fig. 1)
E) Make sure the bottom sill area of the rough opening is flat and level. Correct rough
opening if sloped towards the interior, out of level, or humped. (Fig. 1)
F) Cut the weather-resistant barrier (WRB) in a “Modified I” pattern. (Fig. 2)
G) Fold back the WRB on the sides toward the interior and staple into place. (Fig. 3)
H) From the exterior, cut the top of the WRB as shown to form a flap. (Fig. 4).
I) Temporarily tape this top flap up. (Fig. 4)
Tools Needed
• Safety Glasses
• Utility Knife
• Hammer (or nail gun)
• Caulk Gun
• Level
• Ladder / Scaffolding
 Square
• Tape Measure
• Stapler
• Screw Driver
+
Materials Needed
• Backer Rod
1/4"-1/2” diameter closed cell foam
• Insulation
Minimally expanding low pressure
polyurethane window and door foam
• Shims
Made of cedar or synthetic material
• 2 1/2" Drywall Screws
(No Nail Fin Installation)
• Roofing Nails (Nail Fin Installation)
2” Galvanized (16D)
• Silicone Sealant
100% Silicone
• Flashing (Nail Fin Installation)
Self-adhesive flexible flashing that
complies with ASTM-D779