CoatingsPro Magazine

NOV 2015

CoatingsPro offers an in-depth look at coatings based on case studies, successful business operation, new products, industry news, and the safe and profitable use of coatings and equipment.

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Page 34 of 83

COATINGSPRO NOVEMBER 2015 35 During the installation process, condensation was kept at bay by reinsulating the interior ceiling within 24 hours of the existing insulation being dropped. But although no existing condensation was found, the crew had to be prepared to discover moisture at any point during the process. As stated by Nutting, if condensation was found, the crew would have had to bring in temporary heaters and really crank up the heat in the facility. Harsh Winter Conditions A lthough the weather outside was defnitely frightful, the Standard Waterproofng crew caught quite a break with this job. Te entire warehouse was heated at all times, and all spray foam and coating material was delivered to the project directly. "Both the temperature inside the warehouse and the fact that the materials were delivered directly to the site and stored indoors meant that the cold temperatures outside did not afect the application process of either the spray foam or the intumescent coating," said Tompson. Mother Nature did not completely cooperate during the entire fve-week duration of the project, though. "Our main weather concern was travelling in snow storms. Being a fast-track project, every work day was important. In snow storms, we had to decide if we would send our crew out to the jobsite or not. We only had to take two snow days, but those days were pretty brutal. It was blizzard conditions with 14–16 inches [35.6–40.6 cm] of snow within the period of the day. A ll the equipment was onsite, and since all work was done inside a heated building, in theory we could have pushed through. However, it was just too dangerous to have our guys out on the road," revealed Nutting. Luckily, the crew had a couple of snow days built into the schedule and, thanks to the lack of condensa- tion on the substrate, the team only had to work a few weekends to ensure that the job stayed on schedule. Insulation and Fire Prevention As stated by Tompson, choosing the Demilec spray foam and intumescent coating came down to the proven performance of The SPF was spray-applied at an approximate thickness of 6.5 inches (16.5 cm) using Graco HV 2035 and Graco E-30 rigs. The crew used Demilec's Heatlok Soy 200 Plus and wore full-face fresh air respirators. JOB AT A GLANCE PROJECT: Remove the existing batt insulation from the interior roof area of a build- ing and install spray polyurethane foam (SPF) and intumescent paint COATINGS CONTRACTOR: Standard Waterproofing Inc. 55 Grove St. Waterville, ME 04901 (207) 872-5552 SIZE OF CONTRACTOR: 40 employees SIZE OF CREW: 6 crew members PRIME CLIENT: Athena Health 3 Hatley Rd. Belfast, ME 04915 (207) 323-7100 SUBSTRATE: Metal CONDITION OF SUBSTRATE: Good SIZE OF JOB: 30,000 sq. ft. (2,788.1 m²) DURATION: 5 weeks UNUSUAL FACTORS/CHALLENGES: » Work was done during harsh winter conditions; they had two "snow days." » There was a possibility of condensation between the existing batt insulation and the metal roofing substrate. » The crew worked with a very tight timeframe. MATERIALS/PROCESSES: » Removed the existing batt insulation » Spray-applied Demilec's Heatlok Soy 200 Plus at an approximate thick- ness of 6.5 inches (16.5 cm) using Graco HV 2035 and Graco E-30 rigs » Spray-applied Demilec's Blazelok TBX intumescent coating at an approximate wet mil thickness of 17 mils (431.8 microns) and dry film thickness of 14 mils (355.6 microns) using a Graco Texspray Mark IV Pro electric airless sprayer SAFETY CONSIDERATIONS: » Wore full-face fresh air respirators when spraying SPF » Wore Tyvek protective suits, steel-toed boots, gloves, hard hats, face shields, and spray socks » Worked on scissor lifts; each team member is trained on the proper use of aerial lifts, and these lifts had a railing system that made tying off unnecessary

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