Underlayment Felt

• Home is completely dried in with felt and overlaps 4”minimum on horizontal seams
  
• No vertical seams allowed on underlayment 
  
• Felt must go up 3" on vertical walls and chimneys. 
  
• Follow the diagram for felt and drip edge application.
  
• Felt must go underneath overhanging soffit to protect from wind driven rain.
  
• Roof with a pitch of 3/12 and below has 2 layers of felt or 1 layer of Self Adhered at 50% overlap. 
  
• Sufficient enough 1in. plastic nail caps are used to hold down felt in the wind, typically spaced around 12”.
  
• No wrinkles in felt. Wrinkles in felt will cause humps in the shingles.
  
• Valley metal should be applied directly to roof Deck 
  
• Self-adhered (Ice and Water Shield) should be put directly on top of the valley metal. 
  
• When drip edge on a rake and meets center of valley, drip edge must be stripped off with self adhered.