Do You Need Ice And Water Shield Under Metal Roofing?

Ice and water shield is a membrane laid under metal roofing to prevent water leakage. It sticks to the roof deck and seals around nails, resisting water penetration caused by ice dams or wind-driven rain that gets under shingles. Metal roofs shed water well. But ice dams and wind-driven rain happen. Leaks follow. Protect your home. Do you need ice and water shield under metal roofing? This barrier sticks to the roof. It seals nails and resists water. Safe from leaks. You likely need the shield. While metal roofing repels water, it still allows leaks. Ice dams block drainage. Wind drives rain under shingles. An ice and water barrier seals the deck, repairs flat garage roofs. It sticks around nails and flashings. Seals cracks. Prevents costly damage.

Installation Process Of Ice And Water Shield Under Metal Roofing

Installing ice and water shield under metal roofing is crucial for protection against leaks and ice dams. Begin by cleaning the roof thoroughly, removing any debris or dirt. Next, unroll the ice and water shield along the eaves of the roof, ensuring it overlaps the edge by a few inches.

Moisture Barrier Under Metal Roof

Installing a moisture barrier under a metal roof is crucial. It prevents water from seeping into your home. Without it, leaks can damage ceilings and walls. Moisture barriers are usually made of materials like felt or synthetic fabrics. They create a protective layer between the roof and the interior of your house . Proper installation ensures maximum effectiveness. It’s a vital step in maintaining the integrity of your roof. Metal roofs are durable but still vulnerable to moisture. That’s why a moisture barrier is essential.

Where To Put Ice And Water Shield On Metal Roof?

When installing a metal roof, it’s crucial to place ice and water shield along the eaves and in valleys to prevent leaks. Start by applying the shield along the eaves, extending it at least 24 inches past the inner wall. Ensure it overlaps properly. Install the metal drip edge over the shield for added protection. In valleys, place the shield along the bottom edge, extending it up the valley and overlapping sections.

Frequently Asked Questions

What Do You Put Down Under Metal Roofing? Under metal roofing, you typically lay down an underlayment to provide a barrier against moisture. This could be synthetic material or felt paper. You may use insulation to regulate temperature and reduce noise. Do Metal Roofs Need Ice Guards? Metal roofs need ice guards to prevent ice dams. These guards stop ice from forming at the roof edges, preventing potential damage. They ensure safe drainage and protect against leaks. Should You Put A Moisture Barrier Under Metal Roof? Yes, you should. Moisture barriers prevent water damage. Metal roofs can trap moisture without one. Prevent leaks by using a moisture barrier.


An ice and water shield boosts the weather protection of a metal roof. Metal sheds precipitation. But it is not impenetrable. Ice dams can impede drainage. Wind-driven rain sneaks under metal roofing. Even quality installation misses spots. The barrier seals the deck and nails. Install ice shield over the entire deck before metal roofing. Follow manufacturer guidelines carefully. Smooth out all wrinkles and bubbles. Seal around roof protrusions thoroughly. Overlap seams correctly. A well-installed barrier saves money over time.