Make the first mark 12.
Installing of metal ice guard roofing.
By creating a barrier at the most vulnerable areas of your asphalt shingle or metal roof at the eaves and rakes in valleys around chimneys etc stormguard film surfaced leak barrier helps prevent leaks due to water backing up in your gutters wind driven rain and in the north damaging ice dams.
High temperature hot roof construction ice shield metal roof underlayments water shield categories.
When installing snow guards always refer to the manufacturer s instructions.
How to install snow guards on metal roofing.
Continue to make marks 6 inches up.
Because of the strength of the adhesive installing an ice guard is a two person job.
Photo courtesy of dynamic fastener.
The ice guard needs to lie flat on the roof decking to be effective or else water will get under it and cause damage to the roof.
Make a second row of marks 12 inches from the lower edge of the roof.
Mca s technical bulletin metal roof design for cold climates can be used as a reference guide for snow retention calculations and placement.
Secure with roofing nails centered on the top flange at 8 to 10 on center or per adopted local building code.
As well this may be a building code requirement in some jurisdictions.
Most commonly roofing professionals install ice and water protector on eaves rake edges overhangs and valleys as they are most vulnerable to ice dams and wind driven rain.
Drip edge applications should have dimensions large enough to both position the top flange of the metal 2 back from the edge of the roof deck and extend outward down over the edge.
Place a mark with a pencil 6 inches up from the lower edge of the roof and 6 inches in from one side.
One person can install long lengths of ice and water shield to the roof however it is easier for two people to install especially with some new installatio.
Install the roofing screws vertically along each rib in the panel.