Installation Instructions for #11 Retrofit Snowguards

ALPINE SNOWGUARDS A Division of Vermont Slate & Copper Services, Inc.

1. The layout is pictured below and is dictated horizontally by joints in the roofing material.
2. Slide the sleeve to the bottom of the strap.
3. Slide the snowguard up between the rows of shingles so that the snowguard strap is centered on the joint of the course of slate or shingles above. The bottom 3-1/2" of the snowguard should remain exposed below the butt end of the third course of slate or shingles. (See diagram below).
4. Fasten the snowguards by inserting the fasteners through the snowguard strap, through the slate or shingle and into the room deck. It may be useful to pry the shingles apart to have easier access to the snowguard strap below. (See diagram below).
5. Fastener heads should be as flush with the snowguard strap as possible (a nail set or flat head screw may need to be used) and covered with an acceptable sealant.
6. Slide the counterflashing sleeve up into place over the fastener heads so that the top of the sleeve is under the third course of shingles. The sleeve is held in place by friction and the sealant used on the fastener heads. This will counterflash the fastener holes and preserve the roof's integrity.

Legend:

Top of Course 1
Top of Course 2
Snowguard
Sleeve

Snowguard Specifications for Slate and Shingle Roofing Left is the recommended layout pattern. Vertical spacing between each row is 12" to 18" depending on the exposure (i.e. 7 1/2" exposure would yield 15" vertical spacing). Horizontal spacing between each snowguard is 24" maximum. The first row of snowguards is placed on top of the third course of roofing. The three row layout pattern should be repeated every 15' up the roof slope (i.e. Rafter length greater than 15' but less than 30' needs two 3 row courses of snowguards).