Masonry Magazine June 2012 Page. 32

Masonry Magazine June 2012 Page. 32

Masonry Magazine June 2012 Page. 32
FLASHING

gunnability of silicone and the best characteristics of polyurethanes. Polyethers do not migrate oils into porous masonry and are gunnable in temperatures down to 15 degrees Fahrenheit. With the low VOCs and the quick tack-free time, polyethers soon will replace the polyurethanes used today, because of superior joint material performance and bonding to a wide variety of membranes and substrates, and the fact that they can be installed in a wide range of weather conditions. Polyether used with a primer will seal Thermoplastic Poly-olifins with excellent results.

Flashings

FLASHINGS HAVE SEEN the biggest change in the market during the last few years, with the industry introducing products that have proved their value for many years in the roofing industry.

Copper laminate

OF COURSE the tried-and-true copper laminate material we all used for years still is on the market. However, one major manufacturer now has made their product much more durable and desirable, by laminating a mesh of polyethylene on both sides of the copper. It is durable, nearly impossible to cut with a trowel and as good a material as any that can be found on the market. This is a premium flashing material that will perform well for years to come. Many of the copper laminates of today do not contain asphalt as a binder, and making them compatible with most building products.

Compatible with many polyurethanes, polyethers and butyls, PVC is the first choice for many contractors when they need to get it right the first time.

Rubberized asphalt

RUBBERIZED ASPHALT is the most common flashing on the market today, with several companies breaking up the geography of the United States. The rubberized asphalt, or "Stickie Back," that is installed commonly is a good, stable material that performs well when installed properly. Primers are sold by some manufactures as part of every application, and other companies will omit the primer if the customer used a term bar. Installation of this membrane should be discussed with your project architect and manufacturer prior to installation. It is critical that the mason contractor read the fine print for each product as warranties can depend on the use of primers and full adherence to the substrate. Rubberized asphalt is ultra violet (UV) sensitive. Therefore, extended exposure to sunlight is not recommended. Compatibility between rubberized asphalt and PVC-molded corner boots and end dams should be investigated prior to construction as plasticizers can migrate from the PVC and reduce the plasticity of the rubberized asphalt over time. This causes the potential for a leak down the road. Metal drip edges typically are used at the face of the wall when installing rubberized asphalt as many manufacturers require that the membrane be held back from the brick face=/-inch.

Polyvinyl chloride (PVC)

TODAY'S PVCS COMBINE old and new technology to create strong, durable and flexible materials, thanks to the addition of non-migratory plasticizers. That means the material that makes it stable is going to stay within the PVC and not leach out, evaporate or allow the PVC to break down and become brittle, which would allow cracks and create leaks. PVCs are as good a membrane as any on the market. A crossover from the roofing industry, the masonry industry has allowed the roofing industry to test market roofs all around the world for many years to prove the durability, workability and economy of such a membrane. I started this article stating that masons are proud; they are smart, too.

Compatible with many polyurethanes, polyethers and butyls, PVC is the first choice for many contractors when they need to get it right the first time.

Thermoplastic polyolifin (TPO)

ΤΡΟ IS ΑΝΟΤHER PRODUCT that we inherited from the roofing industry. TPO is a flexible membrane that has a 30-year life span when installed on a roof, and an unlimited life span when placed in the cavity of a building. TPO has an advantage over all other membranes on the market, because you can seal the laps using a butyl sealant or primed polyether. You can also hot-air weld them, which is a process commonly known as heat-welding. This can provide a joint


Masonry Magazine December 2012 Page. 45
December 2012

WORLD OF CONCRETE

REGISTER NOW; RECEIVE A FREE HAT!
The first 25 people to register this month using source code MCAA will receive a free MCAA Max Hat (valued at $15.00)! The MCAA Max Hat features a 3D MCAA logo embroidered on front with a

Masonry Magazine December 2012 Page. 46
December 2012

Index to Advertisers

AIRPLACO EQUIPMENT
888.349.2950
www.airplace.com
RS #296

KRANDO METAL PRODUCTS, INC.
610.543.4311
www.krando.com
RS #191

REECHCRAFT
888.600.6060
www.reechcraft.com
RS #3

Masonry Magazine December 2012 Page. 47
December 2012

AMERIMIX
MORTARS GROUTS STUCCOS

Why Amerimix Preblended Products?

576

The choice is CLEAR:

Consistency

Labor reduction

Enhanced productivity

ASTM - pretested to ASTM specifications

Masonry Magazine December 2012 Page. 48
December 2012

MASON MIX
Type S Mortar
QUIKRETE
www.quikrete.com
800-282-5828

MASON MIX
Type 5 Mortar
COMMERCIAL GRADE
QUIKRETE

Our mortar mix on Vail's Solaris was so consistent, every bag was like the next. And the next