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Round Base Flashing - Red Silicone

  • simple solution to flashing a penetration through a metal roof
  • has clearly marked diameters on each flashing
  • marked dimensions also allow for easy sizing to fit each individual application
  • the aluminum base on the upper lip is corrosion resistant and allows the flashing to conform to any panel configuration and/or roof pitch
  • available in EPDM or orange silicone, both flexible materials, and both resistant to ultraviolet rays, cracking & weathering

*view sizing chart


    Item # Description/Size Availability Qty Break Price Quantity
    RD101RG
    #1 Round Base Flashing, Red Silicone | Fits Pipe Sizes ¼" to 2½"
    In Stock 1 $8.15
    RD201RG
    #2 Round Base Flashing, Red Silicone | Fits Pipe Sizes 1¾" to 3"
    In Stock 1 $9.62
    RD301RG
    #3 Round Base Flashing, Red Silicone | Fits Pipe Sizes ¼" to 5"
    In Stock 1 $9.90
    RD401RG
    #4 Round Base Flashing, Red Silicone | Fits Pipe Sizes 3" to 6¼"
    In Stock 1 $23.75
    RD501RG
    #5 Round Base Flashing, Red Silicone | Fits Pipe Sizes 4¼" to 7¾"
    In Stock 1 $21.59
    RD601RG
    #6 Round Base Flashing, Red Silicone | Fits Pipe Sizes 5" to 9"
    In Stock 1 $38.25
    RD701RG
    #7 Round Base Flashing, Red Silicone | Fits Pipe Sizes 6" to 11"
    In Stock 1 $35.55
    RD801RG
    #8 Round Base Flashing, Red Silicone | Fits Pipe Sizes 7" to 13"
    In Stock 1 $47.55
    RD902RG
    #9 Round Base Flashing, Red Silicone | Fits Pipe Sizes 9" to 19"
    In Stock 1 $116.75

    Size Pipe Size Base Size Opening Diameter Overall Height Material
    1 ¼" to 2½" 4¾" Closed 2¾" Red Silicone
    2 1¾" to 3" 6¼" 1½" 3½" Red Silicone
    3 ¼" to 5" 7¾" Closed 3¾" Red Silicone
    4 3" to 6¼" 9¼" 2½" 5" Red Silicone
    5 4¼" to 7¾" 10¾" 3½" 4½" Red Silicone
    6 5" to 9" 12½" 4¼" 5½" Red Silicone
    7 6" to 11" 14½" 5" 5¾" Red Silicone
    8 7" to 13" 16½" 5¾" 7½" Red Silicone
    9 9" to 19" 25¼" 7½" 8" Red Silicone
    Test Type EPDM Silicone
    Advance ozone resistance test @ 500 pphm 70 Hours 70 Hours
    High Temperature: Intermittent - Continuous- +275ºF+212ºF +500ºF+437ºF
    Low Temperature: Resistance tested to - Tensile strength - -65ºF1,450 psi -100ºF700 psi


    1. Cut to pipe diameter marked on flashing (this is approximately 20% smaller than the diameter of the pipe).
    2. Slide the flashing down the pipe, using water to lubricate if necessary.
    3. Form & bend the aluminum base of the flashing to fit the surface of the roof.
    4. Seal the flashing by applying urethane/silicone sealant between the flashing & the roof. Use a large slot screwdriver to press the base down tightly.
    5. Fasten the flashing with weather-resistant fasteners to complete the seal.