GBA Logo horizontal Facebook LinkedIn Email Pinterest Twitter Instagram YouTube Icon Navigation Search Icon Main Search Icon Video Play Icon Plus Icon Minus Icon Picture icon Hamburger Icon Close Icon Sorted

Community and Q&A

Impact of self adhered WRB on window/door replacement

KYLE WINSTON BENTLEY | Posted in Energy Efficiency and Durability on

Hi All,

I’ve been mulling over the impacts of self adhered WRB (Blueskin VP100, Grace Vycor and the like) on the repairability and replacement of ‘wear items’ in the future.  Since window flashings are often integrated into the WRB, taped, or otherwise sealed, will it be relatively more difficult to replace windows in say, 30 years, if one of those is used?

With traditional WRB’s, flashing can be tucked in/around/under, and for the most part flashed in the same way as the original.  I’ve been reading articles on how windows are typically replaced, and it seems that this will create somewhat more work than would otherwise be required.

Has anyone with experience replacing both found there to be a difference, and is the quality of the replacement window up to par with the original, assuming it was installed correctly in the beginning?



GBA Prime

Join the leading community of building science experts

Become a GBA Prime member and get instant access to the latest developments in green building, research, and reports from the field.


  1. Expert Member


    The only place it might be a problem is at the head. If you wanted you could keep the self-adhered WRB up a few inches above the head-flashing and use a short strip of conventional WRB below that.

    The two things that probably make the most difference in the ease of replacement are having the siding butt up to the trim, not extend under it, and having a rain-screen.

  2. Expert Member

    Thanks for the thoughts Malcom. I hadn't considered the trim as part of the replacement, but it makes perfect sense.

Log in or create an account to post an answer.


Recent Questions and Replies

  • |
  • |
  • |
  • |