The True Purpose Of Underlayment

Provides an extra layer of protection between your roofing shingles and roof deck
  • Prevents wind-driven rain...

    (or water from other sources) from infiltrating under your shingles and causing damage to your roof structure or the inside of your home

  • Provides an extra layer of protection...

    Between your shingles and your roof deck

  • Lays flatter...

    And will not buckle when installed

  • Helps reduce blow-off...

    By allowing your shingles to lay flatter and more uniformly

Metal Valley
Traditional #15 Felt Underlayment
Synthetic Underlayment
Ice Guard