Category Archives: Quality Assurance Observations

The Stucco Wall Repairs Looked Great, Until We Water Tested Them… And They Failed

  • Stucco Repairs Are Not Easy to Do
  • Lapping New Building Paper Correctly Under Existing Building Paper is Critical To Keeping The Building Dry
  • Hiring an Independent Quality Assurance Inspector Protects Everyone
  • William Leys Waterproofing Consultants LLC Offers Affordable Quality Assurance Inspections

Our last blog post talked about an owner who hired us to perform an inspection on their condo unit at a well known West Hollywood property. The condo had experienced water intrusion while the owner was away and they came home to find water on their bedroom floor.

Remediation began with removal of flooring and drywall where mold was found. The only problem before fixing everything was to find out where the water was coming from. One clue was the fact that recent stucco and deck work had been done. Couple that with the fact that several rain storms had occurred and the answer seemed to point to the wall being the culprit.

The view from the interior of the wall shows an odd repair of the stucco and building paper using spray foam.

We started with a visual inspection of the area, and made some odd discoveries. New building envelope paper was integrated into existing paper using spray foam. Flashing was assembled using sheet metal tapping screws where it overlapped the next piece of flashing. We could see several areas where stucco was visible as it had pushed the paper out, creating a path for water to follow into the building.

Stucco Visible Behind Open Building Paper

Returning the following morning we set up an informal water test. Using a lawn sprinkler we sprayed the wall where the drywall was open on the interior. Within 20 minutes we observed water on the interior of the building, indicating defective repairs to the building paper.

Water can be seen running down the interior of the wall in this photo. We found two other leaks during the test as well.
A lawn sprinkler imitates rain soaking the building.

So now we can clearly see that the repairs are defective in this one limited area. However our question then becomes if this one limited area has three different areas that are leaking, and the contractor has replaced hundreds of lineal feet of stucco, building paper  and flashing, how many other areas might be leaking as well? Given the data we already have, we’d have to guess that there’s more leaks that remain unknown.

Conclusion- despite the optimism that your contractor is making repairs correctly, the realty is somewhere in between. Attention to detail is critical. Even then mistakes can be made. By having a quality assurance inspector observing and checking your contractor’s work, you can expect that the quality of the work will be much higher. That’s because when people know they are being watched and checked they spend more time doing the job right the first time rather than having to redo the work.

Give us a call today to discuss your condo rehab work and we will discuss how QA inspections improve your job by holding the contractor accountable.

Bill Leys has been performing quality assurance inspections all over California for many years and his diligence in inspecting contractors work has helped ensure that hundreds of leak free homes and condos are restored correctly. Call Bill at 805-801-2380 today.

After 1 minute of water testing, the door leaked.

Private Client Hires William Leys Waterproofing Consultants LLC to Observe, Document and Report on HOA Experts Water Intrusion Investigation Related to Dispute on The Cause of the Intrusion

Water Intrusion Can Cause Considerable Hidden Damages if Left To its Own Devices

It started with a leak into the condominium owners unit, and after 4 months, the cause of the leak still remains unknown. With their home upended by drywall being removed, dehumidifiers running constantly, and continued water intrusion occurring, the home owner has hired William Leys Waterproofing Consultants LLC to represent them as their advocate and expert in determining where why and how water Intrusion continues to occur.

We will be attending and documenting the investigation by the HOAs experts and examine their findings after another in-depth intrusive moisture inspection. With potential legal liability on the line, the owner needs expertise working for their best interest. Our history of performing water intrusion investigations and expertise in documenting provides our client with comfort and security in having us on their side.

With some HOAs it’s up to the owner to prove that the HOA is negligent in protecting the building, and unfortunately this HOA is proving to be difficult to work with and get them to accept responsibility. Our task is to provide the expertise and the proof that the responsibility lies with the HOA, or show the client why it’s not the HOAs responsibility.

When your HOA is not doing its job and remediating water intrusion and you believe it’s their responsibility, by hiring the experts at William Leys Waterproofing Consultants LLC may help sway their opinions to be favorable to your claims.

Reach out today for a free conversation about how we can help you! 805-801-2380.

The Big Beautiful Reflecting Pool Debacle Continues

Watch company president Bill Leys discuss the reflecting pool debacle that is the talk of the waterproofing industry.

Rhino Linings really stepped in it when their contractor Atlantic Coatings took on the job that Sika Corporation declined to be involved in.

What’s your thoughts? Watch the video at our Leys Waterproofing Consultants Official TikTok Account

Nearly 8,000 views so far!

Large Medical Facility Tenant Improvement Contractor Retains William Leys Waterproofing Consultants to Perform Quality Assurance Inspections in Santa Maria

We’re pleased to announce that we’ve been retained to perform quality assurance inspections for a medical facility that will be waterproofed with crystalline waterproofing on a building that has suffered from water intrusion.

The facility is an ob/gyn office that needs to be kept sterile and moisture and mold free. Angelus Waterproofing of Huntington Beach will be applying Koster Systems crystalline waterproofing to the interior of the block walls as the exterior has a stucco system that would be costly to remove. With our assistance the owners of the building selected crystalline waterproofing as the best choice given the conditions and restrictions.

With our years of experience conducting quality assurance inspections and having a highly qualified waterproofing contractor perform the work, the building will be protected from water intrusion for many years as crystalline waterproofing is a permanent system that is impervious to degradation unlike many typical liquid or membrane applied systems.

If you are in need of ensuring your building is being waterproofed properly, please contact us to discuss our quality assurance inspections and how they benefit you, ensure that the waterproofing is being installed correctly and meets all requirements for the manufacturers warranty.

Bill Leys performing quality assurance inspections at Stanford Hospital in Palo Alto on waterproofing over the surgical ward.

Pesky Leak to Be Investigated By William Leys Waterproofing Consultants LLC’s Leak Investigation Sleuths

Where’s the leak? That’s why we were hired, to find a pesky leak that has evaded detection of its source for several years.

William Leys Waterproofing Consultants LLC has been retained to provide leak investigation services by a large builder of medical buildings in California. The pesky leak has caused several offices in the building to be vacated during the rainy season due to concerns over potential mold hazards, never a good thing for patients visiting the building.

We will be using a spray rack to water test the facade of the building in San Luis Obispo county this week. The facade features store front windows and a stone finish on the 4 year old building. Leaks can often hide in such situations and the building’s owners and its construction team that built the building hired us to assist in the leak investigation due to our history of expertise in leak investigations and building enclosure experience.

If your building is experiencing leaks, reach out to us to have a discussion on how we may be able to assist in determining the source and make recommendations for repairs. Our leak investigation experts are ready to assist! Call today 805-801-2380

While we were inspecting the roof, we found the roof drain sump pit clogged up with debris. We also found that the TPO roof has reverse laps that buck water flowing towards the drain.

“Structural Issues” Cause Bay Area Condo Building to Be Evacuated Until Temporary Shoring is Installed

UPDATE AS OF 3/19/26

We spoke with reporter Kevin Nguyen at the SF Standard regarding this property after he reached out to us asking about this property. We were the source that alerted Kevin to the fact that the picture below by  Anna Nevskaya showed failed post tension cables poking out from the building.

Turns out that post tension cables that support the podium deck slab have failed. I saw a review on Google by an owner at the property and knew instantly this building is F’d.

I’ll now predict that the slab can’t be fixed and the building will have to be demolished. What engineer in their right mind would believe that the other cables that aren’t broken are ok and just recommend repairs to the failed cables? No one in their right mind would in my opinion.

Post tension cables have broken in numerous places in one area as seen in this photo taken by Anna Nevskaya (and republished here for public knowledge.) The cause is unknown but is likely related to either damage caused by a massive fire that occurred during the construction, water damage or both.
Continue reading “Structural Issues” Cause Bay Area Condo Building to Be Evacuated Until Temporary Shoring is Installed

Bill Leys of William Leys Waterproofing Consultants LLC Completes Steep Slope Roofing Systems For The WUI Training

President Bill Leys of William Leys Waterproofing Consultants LLC recently attended a webinar presented by SGH on “Steep Slope Roofs in the WUI”.

The one hour AIA approved course discussed the additional requirements for roofs on homes and buildings in California’s Wildland Urban Interface (WUI) that increase a roofs resistance to ember storms which are one of the biggest causes of wildfires running unchecked through homes in vulnerable areas.

With this new knowledge and increased awareness of the challenges that homes face in the WUI, William Leys Waterproofing Consultants LLC is better prepared to assist our clients as their building envelope consultant.

Staying up to date on new requirements, products and technologies in construction is important and we are dedicated to increasing our knowledge so our clients can benefit.

Reach out today for a free discussion on what building envelope issues you may be experiencing and how we may be able to help.

Call today 805-801-2380.

Bill Leys performing quality assurance inspections at Stanford Hospital in Palo Alto.
When it comes to waterproofing buildings, clients reach out to William Leys Waterproofing Consultants LLC to bring that dream to life! We do consulting quality assurance inspections and leak investigations.

How A Building Envelope Consultant Can Add Value to Your Residential Building Project

Long term leaks into this building has destroyed the framing behind the siding and because it is so rotted, the siding doesn’t have anything left to be attached.

As building envelope consultants we are often hired to determine where why and how a roof, siding or windows are leaking. After doing destructive testing and finding what caused the problem, it’s often an installer error that created the problem. Yes sometimes it’s defective waterproofing products, but that’s the exception, not the rule.

For architects and their home building clients, one way to ensure that the building envelope is going to perform correctly for it’s expected life span is to hire a waterproofing consultant to review the architects building envelope details, and to perform quality assurance inspections while the building is being dried in. Drying in a building entails roofs, below grade waterproofing, building paper over the plywood covered walls, window and door flashing for example. All of these need to be installed in a sequence to work together for the building to remain leak free.

Whether you are building tract homes, commercial/residential, condos or a spec home, a small add to the project budget to include a waterproofing consultant to assist in keeping your project leak free is a good investment. Consider the costs when a building does leak; there’s investigative costs, loss of use, possible mold claims, expensive repairs and everyone is aggravated.

William Leys Waterproofing Consultants LLC is here to help you with making your building project a success. Reach out today for a discussion on how we can help bring value to your project.

A Roofing Contractor Messes Up, William Leys Waterproofing Consultants LLC Helps Client Get It Fixed

A Low Slope Roof Installation Went Awry When The Contractor Deviated From The Manufacturers Installation Instructions

William Leys Waterproofing Consultants LLC Steps in to Assist The Building Owner Get the Work Corrected

A recent consult job that we had for a client who just had a new low slope roof installed on their building showed the reason that building owners should consider hiring a quality assurance inspector to ensure that the roof is installed right the first time and doesn’t have to be done over.

A client reached out to us who just had a new roof installed on their building. They had concerns about the workmanship and requested our assistance to inspect the job and document the problems with the installation. A low slope roof with a single ply TPO membrane had multiple issues with the installation.

As you can see from the photo gallery we found  numerous problems with the installation. We wrote a detailed report for the client who then was able to go to the contractor and ask them to make corrections to their work. The city building department refused to sign off on the permit for the roof because of the poor workmanship and the client threatened to complain to the Contractors State License Board if the contractor did not step up and replace and repair his poor work.

Continue reading A Roofing Contractor Messes Up, William Leys Waterproofing Consultants LLC Helps Client Get It Fixed

William Leys Waterproofing Consultants LLC To Perform Quality Assurance Inspections for an HOA in the San Francisco Bay Area

We will be performing quality assurance inspections on this project in the East Bay.

We’re excited to announce that we were awarded the contract to perform quality assurance inspections for a large HOA reconstruction project in the East Bay area of San Francisco. The 100+ units in the HOA are leaking at the decks and resulted in damage to the exterior walls.

We will be performing periodic inspections of the weather resistant barriers (WRB’s) the installation of sliding doors and the waterproofing of the decks to ensure that they are being installed in accordance with the plans and specifications. This helps the Association ensure its money is being spent well on quality work and the materials are installed correctly that will last for their expected life spend and perform as intended.

Continue reading William Leys Waterproofing Consultants LLC To Perform Quality Assurance Inspections for an HOA in the San Francisco Bay Area