Method A: Weather –Resistant Barrier (WRB) Applied after the Window Installation – Flashing

applied Over the Face of the Mounting Flange

Dimensions referenced are based on a 9" flashing. If a different width of flashing is used, these

dimensions should change to correspond to the width of that material.

Installation details are based on non-self-adhesive flashing. If self-adhesive flashing/tape is used,

some steps such as caulking in steps 4 and 6 can be eliminated. The self-adhering tape/flashing

will be installed over the nail flange detailed in steps 5 and 7. Consult self-adhesive tape manufacturer’s

installation instructions for proper installation of their product.

Step 1 – Apply and fasten the horizontal sill flashing material first, level with the top edge of

the rough opening and long enough to extend 9" beyond the jamb flashing.

Step 1 – Install a 2x wood buck into the masonry opening, using 3/16" x 2-3/4" Tapcons,

with a minimum 2" clearance to masonry edges and a minimum 2-1/4" clearance to adjacent

Tapcons. Embedment, into the masonry, shall be a minimum of 1-1/4". Anchoring shall be

located 4" from each corner, 15" maximum on center of buck jambs, mid-span and 4" on

either side of mid-span of buck head and sill. Interior and exterior wood/masonry perimeter

joints shall be sealed with silicone sealant.

Step 1A – Apply and fasten the horizontal sill flashing material first, level with the top edge of

the rough opening and long enough to extend 9" beyond the jamb flashing.

Step 2 – Apply a continuous bead of sealant to the backside of the window-mounting flange

and immediately set the window in the opening.

Step 3 – Insert shims as required to ensure the unit is plumb, level and square and fasten the

window perimeter securely into position. The fasteners shall be #10 x 2" truss head screws

through the flange and into the buck at 2" from each end and 8" on center.

Step 4 – Apply a continuous bead of sealant to the exposed mounting flange at the side jambs

of the installed windows. Continue the sealant bead at the jambs vertically 8.5" above the

rough opening at the head of the window.

(NOTE: If using a self-adhesive window tape, Step 4 and 6 may be omitted)

Step 5 – Install the jamb flashing by pressing the flashing onto the sealant beads applied in

Step 4. Extend the flashing 8.5 inches beyond the rough opening at the head and sill. Attach

flashing into position using appropriate fasteners.

Step 6 – Apply a continuous bead of sealant to the exposed mounting flange at the head of the

installed window.

(NOTE: If using a self-adhesive window tape, Step 4 and 6 may be omitted)

Step 7 – Install the head flashing by pressing the flashing into the sealant bead previously

applied across the mounting flange. Press the bottom edge of the flashing into the sealant.

Extend the head flashing 10 inches beyond the rough opening on either side, over the top

of the jamb flashing, and fasten into place using the appropriate fasteners.

Step 8 – In a water shedding fashion, install the weather resistant barrier (WRB) to the building

framing. At the sill, tuck the WRB under the sill flashing and loose ends of the flashing.

Continue to apply the WRB in a water shedding fashion over the jamb flashing and head of

the window.

3102 Horizontal Slider Installation Instructions –

Replacement, Wood

Step 1 – Insert shims as required to ensure the unit is plumb, level and square. The window

shall be secured at the frame interior perimeter into the buck with #10 x 2" truss head

screws at 5" from each end and 18" maximum on center at frame jambs and 12-1/2" maximum

on center at frame head and sill. The exterior perimeter and sill screw anchors/plugs shall be

sealed with silicone sealant.

Replacement, Masonry

Step 1 – Install a 2x wood buck into the masonry opening, using 3/16" x 2-3/4" Tapcons,

with a minimum 2" clearance to masonry edges and a minimum 2-1/4" clearance to adjacent

Tapcons. Embedment, into the masonry, shall be a minimum of 1-1/4". Anchoring shall be

located 4" from each corner, 15" maximum on center of buck jambs, mid-span and 4" on

either side of mid-span of buck head and sill. Interior and exterior wood/masonry perimeter

joints shall be sealed with silicone sealant.

Step 2 – Insert shims as required to ensure the unit is plumb, level and square. The window

shall be secured at the frame interior perimeter into the buck with #10 x 2" truss head

screws at 5" from each end and 18" maximum on center at frame jambs and 12-1/2" maximum

on center at frame head and sill. The exterior perimeter and sill screw anchors/plugs shall be

sealed with silicone sealant.