Design Solutions - Spring 2013 - (Page 50)

ing of laminate is a cellular product as well. The coefficients of expansion and contraction of most horizontal and vertical grades laminates are similar to those of the medium density particleboard. An assembly of HPDL and particleboard is usually very stable. Backer Sheets - All HPDL countertops which conform to the Architectural Woodwork Standards now require a full backer sheet on the underside of deck, buildup, and back side of backsplashes. Expands in High Relative Humidity 20 3 0 Low Relative Humidity High Pressure Decorative Laminate Sheet 50 60 Contracts in Low Relative Humidity Unless the component is very well constrained, it is almost always a bad idea to put laminate of veneer core plywood as a substrate. NEMA LD3-2005 states: “Plywood . . . dimensional movement is significantly different than high-pressure laminate. This may result in potential panel warpage, stress cracking, and open seams.” For HPDL Countertops the Default Stipulation in the Standards is “Custom Grade” unless otherwise specified. This grade usually matches the casework upon which it is mounted. Core Materials - Substrates may be veneer core plywood at wet areas or sink tops only if the owner insists and is willing to accept telegraphing. Plywood core must have a Type II adhesive. A better choice is Particle Board, especially the moisture resistant variety with a 24-hour swell factor of 5% or less and 24-hour water-absorption factor of 10% or less. This core must be used for the entirety of the assembly, including splashes. Not just the leg or run that includes the sink. 50 I designsolutions spring 2013 High Relative Humidity Selection - The AWS specifies that HPDL shall be Standard or Post-forming grade with a minimum thickness of .039 inch. Vertical grade is not allowed on counters. Some plastic laminate manufacturers only offer 4x8 and 4x10 sizes This will effect yields, and limit seam or joint locations. Most laminates are available in 3, 4 and 5 foot widths and lengths up to 12 feet. The Wilson House: Ralph Wilson used his home in Texas as a proving ground for his company’s laminate products. A short, informative video, hosted by design historian Grace Jeffers, tells of the remarkable design innovations preserved in this 1959 structure. In the 1950s laminates were used primarily for counter and table tops. The Wilson House showcased laminate clad casework and wall paneling for the first time. View the video at http://www.wilsonart.com/ wilsonhouse. http://www.wilsonart.com/wilsonhouse http://www.wilsonart.com/wilsonhouse

Table of Contents for the Digital Edition of Design Solutions - Spring 2013

Design Solutions - Spring 2013
Contents
Cornerstone
High Pressure Decorative Laminate
Office of Ovangkol
Design Flies High
A Captivating Kitchen
Design Scores Big
A Century of Laminate
Product Showcase
AWI Manufacturing Members
Ad Index
AWI Supplier Members

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