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Brick Cladding: Helping keep moisture out

Maintaining a consistently dry wall assembly requires incorporating a proper drainage plane. Photos courtesy Boral America

by Crysta Thomas

Every year, the summer solstice marks the beginning of summer in the Northern Hemisphere, followed by humidity interchanged with dryness. Periods of intermittent rain showers followed by stretches of blistering heat are common and these climate variations can lead to an increase in wall moisture. This moisture can negatively impact the safety and structural integrity of buildings.

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Epoxy types: A guide for specifiers

Ideally, a bonded anchor should be installed into concrete of known compressive strength. Engineers who specify epoxy anchors also specify the compressive strength to ensure the epoxy can achieve its published bond strength.  If the compressive strength or overall integrity is unknown, they sometimes require field testing of the embedded anchor to determine if the concrete is good enough. Photos courtesy MiTek Builder Products

by Martin Ruch and Jim Collins, PhD, PE

Epoxy types vary widely, and specifiers need to note such attributes as nozzle time, gel time, load time, sag, cure time, and chemical resistance—each property will affect what makes the product ideal for the intended application. When searching for the proper epoxy to specify, it is important to note there are three general classes—pure epoxy, polyester resins, and epoxy acrylates—that break out in different ways with respect to properties and performance.

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The Benefits of SPF in Insulation Applications

NCFI Polyurethanes - 1

by Rick Duncan, PhD, PE

A wide range of polyurethane foam products is available in various densities and open-cell content, each exhibiting different performance characteristics such as application temperature, moisture resistance and R-value, and compressive strength. While a previous article in The Construction Specifier examined the basics of Sprayed polyurethane foam (SPF), this feature examines how foam selection affects installation characteristics, including the maximum lift thickness per pass and allowable substrate temperatures that affect final product performance.

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Benefits of SPF in insulation applications

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by Rick Duncan, PhD, PE

Use of sprayed polyurethane foam (SPF) insulation has steadily become more widespread. Used in residential and commercial structures of various types, SPF is a high-performance option for the building envelope. When applied in ceilings, walls, and floors, the material boasts numerous benefits, including ease of installation, durability, energy efficiency, and improvements in indoor air quality (IAQ).

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