Say No to Moss: Tuck a strip of zinc beneath the ridge shingles at the top of every roofline on your house. You&#x27;ll need to sneak in a nail every couple of feet; make sure shingles cover the nails. A zinc strip is a long-term solution for controlling moss, algae, and fungus growth. Every time it rains, the metal strip leaches away small amounts of fungistats, which kill the fungus and keep the shingles looking their best.