Instructions / Assembly

Installation Instructions
Large 12-inch Retro-Split Storm Collar Flashings
2 of 3
Now, open the pre-cut 12-inch diameter top plug and fold it around the roof
penetration making sure that the twenty (20) tab slots are facing downward.
Loosely close the plug and insert each of the twenty (20) skirt tabs into
downward facing the tab slots. Because of the size of the parts, the process of
assembling a large Retro-Split storm collar may be easier to accomplish if two
persons work together to hold the pieces in place. Wetting the tabs with a little
water can make the assembly slippery and a little easier to insert into the tab
slots. Slide the plug and skirt assembly down the roof penetration to a height
necessary to create a proper counter-flashing umbrella cover.
Arrange the plug and skirt so that the connection joints are not vertically aligned
compared to the top plug cut or skirt connections. This makes the finished
assembly stronger.
Finally, fully open the stainless-steel hose clamp using a screw or nut driver. The
Retro-Split Plug includes a pre-molded channel that will accept the width of the
hose clamp. Position the clamp, and by using the worm drive action of the clamp,
place it onto the assembled Retro-Split Storm Collar skirt and plug. Loosely
tighten the clamp.
Before fully finish tightening the clamp, position the assembled Retro-Split Collar
downward and double check that the elevation is proper to cover the roof
penetration jack flashing. The overlap provides a weatherproof counter-flashing
umbrella. Do not force the collar too tightly onto the flashing. This could cause
the skirt to deform or open.
After positioning the Collar, complete the tightening process of the stainless-steel
clamp using a screw or nut driver. This compresses the tabs held within the plug
slots by pressing the assembly onto the roof penetration. Be careful not to over
tighten, since this can distort the new storm collar.
Due to shrinkage of the EPDM rubber, and differences in temperature at
each job site, the plug cut may not visually completely close, and a small
gap observed. Use finger pressure to push the plug cut together while
simultaneously tightening the clamp.