SPRAYFOAM Professional - Spring 2015 - (Page 40)

RIGHT ON TIPS ON SPRAYING FOAM - ARE YOU DOING IT RIGHT? COMPILED BY SHANI CALVO Y ou've been spraying this way for years, but it is the right way? What are the best techniques for spraying foam? These long-time experts share their answers to these seven questions related to sprayfoam techniques and practices, based on their experiences, their observations and the climate. Contributors Claudio Burtin, Owner, FOAMETIX Brett Geboy, North Central Insulation Ryan Hester, Burtin Polymer Laboratories Jesus Serrano, Tri-County Insulation 1. What is the most common mistake you see? Repercussions? Claudio Burtin, Owner, FOAMETIX: Improper spraying technique. The 'cowboying' it technique, also referred to as 'blow and go,' sprays horizontally either top to bottom or bottom to top, and is the fastest way to install SPF. The foam has to stretch and, most times, is gelling before it comes in contact with the framing. Closed cell foam should never be installed in this manner as you will never achieve the racking loads this way and because you will not receive the full benefits of SPF's structural performance to the framing. A pre-spray is necessary to ensure the ambient temperature inside the hose is consistent, ensuring a thorough and correct chemical reaction takes place. 40 SPRAYFOAM PROFESSIONAL | Spring 2015 'Picture framing' - spraying vertically directly into the framing right angle as a target - structurally increases the framing racking loads and takes much longer to properly install. It is not as critical to apply half-pound density open cell foam in this manner as its low compressive strength and lack of shear strength do not contribute much to the racking loads on the framing. How the SPF was applied is easy to pinpoint, even after it has dried. It is called gusseting and it leaves a 'fingerprint' that can be identified by cutting into the foam after the application. Brett Geboy, North Central Insulation: Off-ratio foam is common. If it is not adjusted right away, you will need to re-foam it. Ryan Hester, Technical Sales and Logistics, Burtin Polymer Laboratories: With closed cell, spraying too thick per pass/lift. This increases the chances for exothermic reaction and for dimensional stability issues. With open cell, installing in high moisture areas such as crawlspaces. Open cell has a higher moisture perm rating increasing the chance for harboring water and mold. Jesus Serrano, Tri-County Insulation: The most common mistake with sprayfoam is being rushed into jobs by the customer leading to a lack of planning and preparation on the part of the insulation contractor. The ideal job is one where the Superintendent/ Owner is able to walk with the customer to create specific expectations for all parties. When jobs are rushed, those expectations become less specific or non-existent and that leads to unhappy customers, go backs, and time consuming repairs or adjustments. The more specific the expectations are for both parties involved, the better the end result.

Table of Contents for the Digital Edition of SPRAYFOAM Professional - Spring 2015

Executive Director’s Corner
President’s Post
Foam Business News
SPFA Today
Industry by Design
Legislative Update
Why I Support SPF
Safety First
Energy Codes and the Benefits of SPF
Behind the Foam
SPF Industry Prepping for Code Changes in Sweden
How to Make Money and Have Fun Doing It
What You Need to Know Before You File in 2015
Tips on Spraying Foam – Are You Doing It Right?
Choosing the Right Strategy for Complex Construction Claims
10 Ways Your Company Can Use Instagram
ABBAA News
Ask the Expert
Calendar of Events
Index of Advertisers/ Advertisers.com

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