WHY IS FULL ELEVATION REPAIR NECESSARY INSTEAD OF PATCH REPAIR?

  

Inspection reports often show high levels of moisture in just a few areas of a wall or elevation, usually under one or more windows. 


In the past, patch repairs were performed in an attempt to save money, versus removal of all stucco, corner to corner. However, it is not possible to integrate a functioning drainage plane with a patch repair so future moisture problems are eminent.  


Drainage planes are water repellent materials (building paper, house wrap, sheet membranes, etc) that are located behind the cladding and are designed and constructed to drain water that passes through the cladding. They are interconnected with flashings, window and door openings, and other penetrations of the building enclosure to provide drainage of water to the exterior of the building. 


The materials that form the drainage plane overlap each other shingle fashion or are sealed so that water drains down and out of the elevation wall. 

THE OVERLAPPING LAYERS OF A STUCCO DRAINAGE PLANE

House Wrap

image1

Vapor barrier should be installed with cap staples over dry undamaged sheathing. Windows should be removed.

Sill pans and Flex Wrap

image2

Install aluminum sill pan flashing and flex wrap. Caulk interior bottom corners of sills and reinstall window. 

Flashing

image3

Install 4" flashing tape around side then top flanges. Install head flashing

Rainscreen

image4

 Install rainscreen to allow the stucco to stand off from the moisture-resistant surface of the vapor barrier. This creates a capillary break and to allow drainage and evaporation.  

EZbead

image5

EZ Bead is designed with a built-in flexible strip for uniform spacing around window and door frames or any other point where stucco meets a dissimilar material. 

Casing bead and Weep screed

image6

Install casing bead to terminate stucco at openings and install weep screed, terminating above grade to allow for proper drainage.

Patch repair treats the symptoms, does not address the real problems

In attempting a patch repair, any existing drainage plane is damaged and made even less effective. In the short term, a patch repair will result in lower moisture readings when the damp material is removed and replaced. However, a functioning drainage plane can not be integrated with existing materials.  Further, the original construction practices will affect the entire home over time, some areas faster than others.

Contact Us

Do you have questions about Stucco Remediation?

Stucco Remediation. Stucco Repair.

Remediation Done Right

250 South Franklin Street, West Chester, Pennsylvania 19382, United States

(484) 571-7100