RSS
TwitterFacebookGoogle+YouTubeLinkedIn

Case Study: Mason Finds Win-Win Solution for CVS Store

facebooktwittergoogle_plusredditpinterestlinkedinmail

Block

Joe Montalvo, who owns Montalvo’s Masonry, in Ft. Worth, Texas, was understandably pleased when he won the masonry bid for a new CVS Pharmacy in Midwest City, Okla. By some measures, CVS is the nation’s largest chain of retail pharmacies.

The architects, Carter & Burgess of Ft. Worth (later acquired by Jacobs Engineering Group Inc.), had specified a reddish-colored, split-face, eight-inch CMU for much of the new store’s single-wythe exterior walls.

The specified flashing method was to be “step-flashing.” In step-flashing, the flashed course requires two wythes of half-width block, allowing the flashing membrane to be installed between them in a “Z” configuration.

Step-flashing often is used for flashing single-wythe CMU. But Montalvo knew it would eat up massive amounts of time and labor.

Eager to save time, Montalvo discussed alternatives with the architect. What if he solid-grouted the first course of eight-inch block, he asked, and inserted cotton rope for drainage? The architect nixed that idea. Flashing had to be installed for more reliable moisture control and greater wall longevity.

Resigned to using the tedious step-flashing, Montalvo got ready to order the two sizes of architectural block.

single-wythe step flashing

But first, he attended a product demonstration, held at Builders Equipment & Supply in Ft. Worth. A representative from Mortar Net USA in Burns Harbor, Ind., gave demos of two of the company’s products. One of them was its newly redesigned CMU-flashing system, Blok-Flash.

A CMU-flashing system? Montalvo’s ears perked up.

The Blok-Flash system, he learned, featured lightweight, high-density polyethylene pans that simply could be dropped onto each block of the first above-grade course, and then mortared in place. The pans would intercept moisture that flowed down through the vertical cores, and then expel it to the building’s exterior through built-in Weep Spouts.

He was especially happy, though, to hear that Blok-Flash eliminated the need for multiple sizes of architectural block. This would not only help him save time, but also it would avoid the problem of getting a bad color match between the two lots. Moreover, the product could be used wherever flashing was required — above windows, doorways, bond beams, etc. Its built-in Weep Spout also made a separate drip-edge unnecessary.

It made pea-gravel unnecessary, too. The system included feather-light rectangles of tough, polyester-mesh fabric (Drainage Mattes) that could be slipped quickly into cores of the next course of block above the Blok-Flash, to direct moisture to the built-in weeps and protect them from falling mortar.

The manufacturer’s rep asserted that using Blok-Flash not only would save in set-up and material costs, but also could save 50 percent or more in labor costs versus step-flashing.

After the demonstration, Montalvo knew this was the answer he’d been looking for. But would it fly with the architect?

Another lucky break awaited him. “I submitted a substitution request to the general contractor and the architect,” he says, “and it was immediately approved.” Apparently, the CVS architects were already familiar with Blok-Flash, and may have been moving toward it for future stores.

On the job site, Montalvo’s workers needed little training to pick up the new system. The Blok-Flash went in swiftly, and the men found that tucking Drainage Mattes into the next course of block was far faster than hauling and pouring heavy pea-gravel.

As promised, the savings added up at equal speed. “There’s no question it saved time and money,” Montalvo said. “It was the best thing since sliced bread!”


Related Posts

  • 33
    May 2009 Block New Masonry Block Systems Photo courtesy of Oldcastle Architectural Inc. Same classic look in less time offers opportunities for masonry contractors By Brett Martin Using new masonry products and techniques can make mason contractors understandably apprehensive, especially with their reputations on the line. But new block systems can help contractors gain new…
    Tags: block, masonry
  • 33
    June 2010 Flashing & Drainage The Role of Flashing in Masonry Somerset House, circa 1755 By Jeremy Douglas We tend to think of bricks, blocks and mortar as some of the most durable building materials ever known to man. Throughout history, monuments, public facilities, and even our homes have been made with one form of…
    Tags: flashing, moisture, masonry
  • 32
    October 2014 Brick Cladding: Helping to Keep the Moisture Out Every year, the summer solstice marks the beginning of summer in the Northern Hemisphere. The season brings with it longer days, festivals and time at the pool, but also humidity interchanged with dryness. In many parts of the country, periods of intermittent rain showers followed…
    Tags: moisture

MASONRY MAGAZINE VIDEO NEWS

Zachary Zuldema 1st Place (2nd Year) Winner Interview at the World of Concrete

Zachary Zuldema 1st Place (2nd Year) Winner Interview at the World of Concrete

Bill Dentinger 2015 Inductee MCAA Hall of Fame

Bill Dentinger 2015 Inductee MCAA Hall of Fame

John Smith, Jr.

John Smith, Jr. receives the 2015 MCAA C. DeWitt Brown Leadman Award

2015 MCAA Fastest Trowel On The Block Winner

2015 MCAA Fastest Trowel On The Block Winner

Daniel Furr 1st Place Winner

Daniel Furr 1st Place Winner (First Year), Masonry Skills Challenge

Synpro Products

Masonry Magazine Video News Interview: Michael Goyne

Hydro Mobile Inc

Interview with Kevin O'Shea of Hydro Mobile, Inc.

Interview with Mark Kemp – Chairman, MCAA

Interview with Masonry Contractors Association of America Chairman, Mark Kemp

Mortar Net Solutions

Interview with Steve Fechino from Mortar Net Solutions

Pullman Ermator

Interview with Lyndon Kelsey of Pullman Ermator

Keene Building Products

Interview with Jim O'Neill of Keene Building Products