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Frequently Asked Questions

Flashing Solutions  >  Frequently Asked Questions



  1. What is a flashing?
  2. How do flashings work?
  3. What are Grace flashings composed of?
  4. How is Grace Vycor® Plus different from Grace Vycor® V40?
  5. How long can Grace flashings be exposed?
  6. Can Grace flashings be used on roofs?
  7. Is Grace Vycor Plus compatible with Tyvek House Wrap?
  8. What size rolls does Grace Vycor Plus come in?
  9. Where can I find installation instructions for Grace Window Flashings?
  10. What caulking materials are Vycor Plus compatible with?
  11. Where can I find Grace window and door flashings?
  12. How do I become a distributor / stocking location for your products?
  13. Where can I get pricing information for your products?
  14. Do you have any sales representative in my area that I can contact?
  15. Where can I get warranty information on your products?
  16. Where can I call for technical / application questions?
  17. Where can I get Material Safety Data Sheets (MSDS)?

  1. What is a flashing?
    Flashings seal a wall where it's most susceptible to water, air and moisture leaks. Most commonly, these are found in window and door openings, corner boards, deck-to-wall intersections, under stucco finishes, masonry walls and other detail areas.

  2. How do flashings work?
    Window and door flashings are installed prior to the exterior finish covering. They work by sealing the joints, seams, holes and other unwanted openings in walls so that water and air cannot pass through the substrate and into your home. Grace window and door flashings provide superior protection against leaks that traditional building papers, felts and house wraps just can't match.

  3. What are Grace flashings composed of?
    Grace Vycor Plus and Grace Vycor V40 are composed of two excellent waterproofing materials: rubberized asphalt and cross-laminated polyethylene.

  4. How is Grace Vycor® Plus different from Grace Vycor® V40?
    Grace Vycor Plus is a 25 mil self-adhered flashing that provides premium protection against water, air and moisture leaks. It is designed to work in severe winter climates, milder climates and in coastal areas where wind-driven rain is common. It can be safely used with wood, plywood, concrete and masonry. Grace Vycor V40 Weather Barrier Strips offer this same protection in 40 mil. Grace Vycor V40 is also specifically designed to meet the federal code for weather-resistive barriers (see Federal Specification UU-B-790a, Grade A).

  5. How long can Grace flashings be exposed?
    They are not meant to be permanently exposed to the sun, but can be safely exposed for up to 30 days. Grace Vycor Deck Protector may be exposed to indirect sunlight for longer periods time. Check product literature for more information.

  6. Can Grace flashings be used on roofs?
    No! Although Grace window and door flashings use the same waterproofing technology as our roofing underlayments, they have different chemical formulations, making them inappropriate for roofing applications. They are also very slippery and come in narrower widths. For roof detailing – use Grace Roof Detail Membrane.

  7. Is Grace Vycor Plus compatible with Tyvek House Wrap?
    Yes. Grace Vycor Plus in compatible with most weather resistive barriers including Tyvek House Wrap.

  8. What size rolls does Grace Vycor Plus come in?
    Grace Vycor Plus is available in 4, 6, 9, & 12 inch rolls. 18 inch rolls may be available for special applications. All rolls are 75ft in length.

  9. Where can I find installation instructions for Grace Window Flashings?
    Please refer to the Grace Vycor Flashing installation video.

  10. What caulking materials are Vycor Plus compatible with?
    Most sealants are chemically compatible with Grace Self-Adhered Flashings provided that the sealant is applied to the high-density polyethylene film component of the flashing. Silicone, Acrylic, butyl, 1-part polyurethane, and 2-part polyurethanes are compatible with the adhesive side of Grace self-adhered flashings if the specific formulation does not contain hydrocarbon solvents.

  11. Where can I find Grace window and door flashings?
    Click here to locate a distributor near you.

  12. How do I become a distributor / stocking location for your products?
    Click here to locate a sales representative near you.

  13. Where can I get pricing information for your products?
    Click here to locate a distibutor near you.

  14. Do you have any sales representative in my area that I can contact?
    Click here to locate a sales representative near you.

  15. Where can I get warranty information on your products?
    Warranty is printed on product packaging. If you need further information, call 866-333-3726.

  16. Where can I call for technical / application questions?
    For technical support call 866-333-3726.

  17. Where can I get Material Safety Data Sheets (MSDS)?
    Click here to locate an MSDS.

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