GBA Logo horizontal Facebook LinkedIn Email Pinterest Twitter X 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

EIFS over lap siding

Titlepusher | Posted in Green Building Techniques on

i have a 2 story built in 1920. It has no moisture issues. I am having the exterior walls dense packed with cellulose. The exterior is horizontal lapped siding over 1×6 horizontal sheathing. After dense packing… can I apply EFIS using house wrap and 2″ foam board over the lapped siding? ..or must it be removed down to the sheathing?

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. GBA Editor
    Martin Holladay | | #1

    You can't get an EIFS warranty (or, in some locations, any kind of house insurance) unless your EIFS is installed by a certified EIFS contractor. Talk to your certified contractor to get an answer to your question.

Log in or create an account to post an answer.


Recent Questions and Replies

  • |
  • |
  • |
  • |