Headwall Flashing
All roof-wall interfaces should be protected with two flashings. A base flashing will prevent moisture
from entering the roof-wall structure at the interface of the two. A second, counter-flashing will
prevent water that's running down the wall from getting behind the base flashing.
License
All images copyright © 2008-2026 the International Association of Certified Home Inspectors, Inc. (InterNACHI). All rights reserved. InterNACHI grants its members a non-exclusive, non-transferable worldwide license, as long as they remain a member of InterNACHI. Non-members must obtain written or email permission from InterNACHI before using these images for any purpose. If you are an InterNACHI member or have received written or email permission to use this image, you may download it in high resolution.
If you are aware of any person or entity using any InterNACHI image or intellectual property without authorization, please contact InterNACHI.
