Installation Guide

Window Flashing Application - Method A
Install trim and/or exterior wall cladding around perim-
eter of window. Seal perimeter joints per the recommen-
dations of the cladding and window manufacturers (see
Figure 9).
8
St ep
Do not seal joint of
supplemental head
ashing (where occurs).
Seal joint between
window frame &
trim(where occurs).
Seal joint between
siding and trim.
Figure 9 Install cladding.
Install weather-resistant barrier (WRB) shingle fashion
from bottom of wall to top. Insert WRB under Nashua sill
ashing. Peel o remaining release liner from Nashua sill
ashing and adhere to WRB. Seal edges of WRB to Nashua
ashing along the window jamb and head (see Figure 8).
Figure 8 Install WRB and seal around perimeter.
25 Forge Parkway | Franklin, MA 02038 | 1.800.343.7875 | nashuatape.com
Precut Nashua jamb ashing tape to extend a minimum
of 6” above and below the rough opening. Peel o release
liner and adhere Nashua jamb ashing over the jamb ns
and over top of Nashua sill ashing (see Figure 6).
Figure 6 Apply Jamb Flashing
Step 5
Precut Nashua head ashing tape to extend a minimum of
6” beyond the jambs of the rough opening. Peel o release
liner and adhere Nashua head ashing over window n
and substrate. Install supplemental head ashing (where
occurs) with a strip of Nashua ashing over the top leg
(see Figure 7).
Figure 7 Apply Head Flashing
Step 6
Step 7
Step 8