Is metal roofing heavier than standard asphalt roofing? In some cases 41% Never 41% Not sure 16% Get Free Quotes Today! Question: Is metal roofing heavier than standard asphalt roofing? Top Answer (41% of 12 votes): Never. Answer: Never Explanation: Metal is lighter than asphalt unless a heavier under sheathing or 2" purlins are required. JPS-WNC llc Answer: Never Explanation: Metal is much lighter than asphalt. Cape Fear Exteriors Get Free Quotes Today! Find Local Pros Free Metal Roof Installation Cost Estimates Related Questions How Much Does Metal Roof Replacement Cost? How Much Does It Cost to Install a Metal Roof? Do Metal Roofs Attract Lightning?Top answer: No Can I Install a Standing Seam Roof Over Asphalt Shingles?Top answer: In most cases Are metal roofs more fire resistant than asphalt roofs?Top answer: Always