Grace Vycor Plus Self-Adhering Flashing - 4" x 75' Roll - 18 Count

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Quick ID: Q814
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  • 4" x 75' Rolls of rubberized asphalt based flashing
  • Protects vulnerable details from moisture penetration
  • Limits air leakage around windows and doors
  • Forms a water and air seal with building materials
  • Protects against mold, mildew, and rot
  • Ripcord and Measurement Markings enable fast and easy installation
  • Accommodates settlement and shrinkage movement
  • Uses the same technology as Grace Ice & Water Shield
  • Bulk Pack of 18 rolls


Vycor Plus 4" x 75' Roll - Bulk Pack of 18 is a high performance self-adhered flashing for windows, doors, and details by GCP Technologies (formerly Grace). It is designed to provide premium protection against water and air infiltration in all critical non-roof detail areas. Properly installed Vycor Plus reduces the risk of rot or mold development and contributes to energy efficiency.

Vycor Plus is composed of durable, cross-laminated, high-density polyethylene sheet that is backed by an aggressive, pressure-sensitive rubberized asphalt adhesive. This roll has a width of 4”, but Vycor Plus is also available in the widths 6“, 9”, 12” and 18” to fit a large variety of job requirements.

Vycor Plus is great for use on window and door openings (headers, sills, jambs, thresholds, nailing flanges), deck-to-wall intersections, inside and outside corners of sheathing, wall-to-wall tie-ins, foundation sill plates, sheathing panel seams, under stucco finishes, masonry walls and other non-roof detail areas.

This specially formulated rubberized asphalt adhesive will seal around fasteners to allow no water penetration. Vycor Plus flashing has superior adhesion properties that ensure strong laps, even in seams in the flashing. The membrane surface is clearly marked at 6” and 12” intervals to facilitate the installation procedure.

The Vycor Plus flashing has the same proven technology as Grace Ice & Water Shield. Its polyethylene film and specially-formulated rubberized asphalt components create a water and moisture barrier that does not weaken from environmental elements. The GCP Vycor Plus features a Ripcord split release that allows for an easy installation where half the membrane is applied before other building envelope components are installed (house wrap or felt) and the other half can be applied after.


Manufacturer Part Number28902
Sub BrandGCP Applied Technologies
AdhesiveRubberized Asphalt
Installation MethodSelf-Adhering; Press into place with heavy hand pressure; Ensure all laps shed water - top membrane layer should go over bottom layer; Always work from the low point to the high point.
Installation Temperature25 degrees Fahrenheit or higher
Length - Feet75
Package Quantity1
Thickness - Inches25 mil
Width - Inches4
Ships to HI/AKNo


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