In order to install zinc strips you must either nail them in over the asphalt shingles or break the seal and install them under a strip of shingles.
Installing zinc strips on roof.
This way the next course hides the nails holding down the previous one.
It works with any wood or composition roof.
Do this the full length of the roof.
Using the 3 5 wide zincshield install so that 3 4 to 1 is under the ridge vent roof cap or the top most row of shingles.
Use a putty knife to break the shingle seal slip the strips under the shingles about 2 of the strip should show nail the strip with a galvanized nail under the shingle every two feet so they don t slip out caulk the nail heads with clear silicone caulk press the shingle down.
Patrick has a lot to say about you using zinc strips on your roof.
Put on your protective eyewear work boots and work gloves before you begin.
How to install a zinc strip to prevent moss on your roof.
Apply z stop zinc strip 50 foot roll by butting it up against the ridge cap against both sides of all roof peaks see graphic.
That is you nail down a course of shingles then lay down the new course above the last course working up the roof.
Use a standard caulking gun for adhesive application.
The premade ones are much quicker and probably neater looking.
Z stop a zinc strip 50 foot roll that s easily installed on your roof acts as a barrier to roof moss algae and fungus growth protecting the roof its appearance and value.
Install under the ridge cap shingle on both sides of the ridge.
Step 3 installing the zinc strips.
On roofs with moss algae mildew or fungus the existing growth must first be removed by pressure washing or brushing then the root systems must be chemically treated and destroyed see magazine articles for bleach solution.
Use corrosion resistant roofing nails with neoprene washers spaced 12 305 mm apart.
Step 2 preparing the roof.
Step 1 safety.
Z stop is a zinc roof moss algae and fungus inhibitor that is applied in strips to old or new roofs.
Install zinc strip on both sides of the ridge.
Installing zinc strips to prevent moss growth is a leak liability says the asphalt roofing manufacturers association.
At the ridge before a ridge cap goes on you also nail down the zinc strips placed so they will protrude beyond the ridge cap.
Be careful moving up and down the ladder.
Do not insert more than 1 25 4 mm under the shingles.
Install z stop zinc strips 50 foot roll to keep it from growing back.