Can isopropyl be used on shingles?

No, isopropyl alcohol should not be used on shingles. Isopropyl alcohol is an effective antiseptic, but it is not suitable for all surfaces. Shingles are typically made of materials such as asphalt, fiberglass, or concrete. Isopropyl alcohol can damage these materials, causing them to become brittle or cracked. Therefore, it is important not to use isopropyl alcohol directly on shingles. Instead, you should use a cleaner that is specifically formulated for shingles.