This method is dearer due to additional labor and products, but peeling from the outdated roof down to the sheathing is your only option if you have already got two layers. Starter shingles: These are definitely a narrow row of asphalt roofing nailed for the perimeter with the roof. A https://sergiowfmt62962.scrappingwiki.com/1044475/roofing_contractor_why_hiring_the_right_professional_matters