Excellent Q&A From Frank Woeste via Journal of Light Construction – Drainage Problems on Low Slope Roof Decks

I’ve had this Q & A page at JLC online on my to do list for a while now to post up here for you all…while the discussion is about drainage problems on low slope roofs, the photo they use is a deck over living space with tile on it and ponding water. And of course, decks over living space with tile or pedestrian traffic coatings on them are roofs as well, just that we walk on them too.

Frank discusses how a roof deck can pond water even when it’s “built to code” from loads placed on the deck. Recommended reading for designers, architects, builders, waterproofers and anyone interested in increasing their knowledge and skills.

Drainage Problems on Low-Slope Roofs

By Frank Woeste

Q. Can deflection of a low-slope roof cause ponding? How can this be avoided?

A. Frank Woeste, P.E., professor emeritus at Virginia Tech, responds: Historically, structural designers and builders have assumed that a design slope of 1/4 inch per foot (1:48) is sufficient to prevent ponding action, thinking that the installed roofing system will maintain at least a 1:48 slope in-service as required by some roof covering systems. However, in many cases and for different reasons, ponding on limited areas of low-slope roofs is common. That’s due to roof deflection, which over time can cause water to collect in some areas of a roof where the design slope for drainage is not adequate, and in fact changes from a “positive” drainage slope to a “negative” slope (see photo below).

  DOWNLOAD THE PDF VERSION OF THIS ARTICLE. (666.96 KB)

MY OPINION – THE SB 326 & SB 721 BALCONY BILLS NEED TO BE COMBINED & AMENDED

I am a balcony inspector the company that I work for does inspections under the two balcony bills. I speak often with other people in my industry including other balcony inspection company inspectors. We pretty much all agree that there is a lot of confusion amongst owners boards of directors and even the attorneys on interpreting the language in the balcony bills.

SB 326 regulates balcony inspections for condominiums. It requires inspections every 9 years by a structural engineer or an architect. It also requires a much higher percentage of balconies be inspected as opposed to what is required for apartment balcony inspections.

SB 721 regulates balcony inspections for apartments. Under this bill a general contractor can perform balcony inspections.

Continue reading MY OPINION – THE SB 326 & SB 721 BALCONY BILLS NEED TO BE COMBINED & AMENDED

The Future is Here For Condo’s That Don’t Maintain; and It Doesn’t Look Good From Where I Stand

In a search today for something entirely unrelated to decks, I stumbled upon the news that a Homeowners Association in Diamond Bar CA had been red-tagged and the residents ordered to leave their homes because of deferred maintenance leading to structural concerns. The order to leave has been rescinded after the first engineers report declared the property and immediate hazard and recommended evacuating units was found to be lets say “over cautious”. There are 155 condos at the property on the first and second floors. The second floor units have balconies while first floor units have a patio.

Photo credit to The Patch Diamond Bar.

 Several structural engineers reports on the conditions found at The Village at Diamond Bar came to the conclusion that “while there are substantial deferred maintenance issues that should be addressed throughout the complex property, the condition does not create a widespread and immediate danger to the life or safety of all occupants of the individual units as previously recommended via a report by Khatri International, a structural engineer hired by the Diamond Bar Village Homeowner’s Association.

Continue reading The Future is Here For Condo’s That Don’t Maintain; and It Doesn’t Look Good From Where I Stand

Duradek Introduces Mountain Quartz and Legacy Cottonwood Vinyl Decking

From a press release issued by @Duradekspert on new decking colors…

Duradek introduces two new colors of vinyl decking for 2022 – Ultra Mountain Quartz and Ultra Legacy Cottonwood. These new colors meet the latest exterior design color trends for grey color palettes in two of Duradek’s most popular patterns.

Continue reading Duradek Introduces Mountain Quartz and Legacy Cottonwood Vinyl Decking

Life Specialty Coatings Product Demo February 10th in Santa Fe Springs

Life Specialty Coatings announced their first product demo of the year at their headquarters in Santa Fe Springs CA.

Located at 12927 Sunshine Avenue in Santa Fe Springs, the demo will start at 9 am and run through till 1pm. Come for some of come for all, reps will be showing how to install their AL system the AL-flex system MC system and the FM system as well as discussing decorative overlays with stains and some of their new products that they are introducing.

Continue reading Life Specialty Coatings Product Demo February 10th in Santa Fe Springs

ATTENTION HOA CUSTOMERS OF THE COMPANY FORMERLY KNOWN AS WANKE INDUSTRIAL COMMERCIAL RESIDENTIAL, YOUR SB 326 BALCONY INSPECTION REPORT MAY BE FRAUDULENT!

Consumer Alert! Attention all Southern California HOA managers, reserve study specialists, HOA attorneys, CAI and CACM

Update, 2/18/22, Board of Professional Engineers has Opened A Complaint Against Raffi Abkarian

For immediate release !

DeckExpert.com,  after investigation and information provided by anonymous sources has formed the opinion that HOA/condominium balcony inspection reports signed off on by Deck Inspectors Inc. may be invalid and fraudulent. The company, owned by DM, who also owns the company formerly known as Wanke Industrial Commercial Residential, is performing balcony inspections for condo and apartment complexes in the Southern California area.

Continue reading ATTENTION HOA CUSTOMERS OF THE COMPANY FORMERLY KNOWN AS WANKE INDUSTRIAL COMMERCIAL RESIDENTIAL, YOUR SB 326 BALCONY INSPECTION REPORT MAY BE FRAUDULENT!

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