3814 W MUKILTEO BLVD 2021-09-07 - Laserfiche WebLink

• • Code Compliance Research Report CCRR-1043 Page 3 of 8 insulation may be applied to the maximum thickness in a Option 4: single pass. Maximum thickness ! Minimum application rate Vertical wall surfaces— j 0.9 gallon/100 ft2 No-Burn® 4.3 Thermal Barrier: 6-1/2 inches Plus ThB Intumescent Underside of roof decks, ' Coating 4.3.1 Application with a Prescriptive Thermal Barrier:Gaco ceilings, or the underside (14 mils WFT;9 mils DFT) F1850 insulation must be separated from the interior living of floors-9-1/2 inches space of the building by an approved thermal barrier of 1/2 inch thick gypsum board or an equivalent 15-minute thermal The coating must be applied over the insulation in barrier complying with,and installed in accordance with,IBC accordance with the coating manufacturer's instructions and Section 2603.4 or IRC Section R316.4. Exceptions are this report. Surfaces to be coated must be dry, clean, and provided in Sections 4.3.2 and 4.4. free of dirt, loose debris, and other substances that could interfere with the adhesion of the coating. The coating is When the insulation is separated from the interior living applied with low-pressure airless spray equipment. space of the building with minimum 1/2-inch-thick gypsum board,the maximum thickness is not limited. 4.4 Attics and Crawl Spaces: 4.3.2 Application without a Prescriptive Thermal Barrier: The insulation may be applied in attics and crawl spaces as Gaco F1850 insulation may be installed without the 15- described in either Section 4.4.1 or 4.4.2. When foam minute thermal barrier prescribed in IBC Section 2603.4 and insulation is installed in an attic or crawl space in accordance IRC Section R316.4, when installed as described in this with this section, a thermal barrier, as described in Section section. The insulation must be covered on all exposed 4.3.1,is not required between the foam plastic insulation and surfaces with intumescent coating as described in Option 1, the attic or crawl space but is required between the 2,3,or 4 below: insulation and the interior living space. Option 1: 4.4.1 Application with a Prescriptive Ignition Barrier: Maximum thickness Minimum application rate When Gaco F1850 insulation is installed within attics and Vertical wall surfaces—7- 1.1 gallon / 100 ft2 of IFTI ! crawl spaces where entry is made only for service of utilities, 1/2 inches DC315 Intumescent Coating the ignition barrier must be installed in accordance with IBC , Underside of roof decks, (18 mils WFT;12 mils DFT) Section 2603.4.1.6 or IRC Section R316.5.3 or R316.5.4, as ceilings, or the underside applicable. The ignition barrier must be consistent with the of floors—9-1/2 inches requirements for the type of construction required by the applicable Code and must be installed in a manner, so the Option 2: foam plastic insulation is not exposed. Gaco F1850 insulation Maximum thickness Minimum application rate as described in this section may be installed in unvented Vertical wall surfaces—5- 0.9 gallon/ 100 ft2 of IFTI attics in accordance with IBC Section 1202.3 or IRC Section 1/2 inches DC315 Intumescent Coating R806.5 at a minimum thickness of 1 inch. Underside of roof decks, ! (14 mils WFT;9 mils DFT) ceilings, or the underside 4.4.2 Application without a Prescriptive Ignition Barrier: of floors—9-11/2 inches 4.4.2.1 General:Gaco F1850 insulation may be installed in Option 3: attics and crawl spaces, without the ignition barrier Maximum thickness Minimum application rate prescribed in IBC Section 2603.4.1.6 and IRC Sections z" R316.5.3 and R316.5.4,subject to the following conditions: Vertical wall surfaces 7- 1.1 gallon/100 ft2TPR 1/2 inches Fireshell F10E Intumescent a. Entry to the attic or crawl space is only to service utilities, Underside of roof decks, Coating and no storage is permitted. ceilings, or the underside (18 mils WFT;12 mils DFT) b. There are no interconnected attic or crawl space areas. of floors—11 1/4 inches c. Air in the attic or crawl space is not circulated to other parts of the building. 545 E.Algonquin Road •Arlington Heights• Illinois• 60005 intertek.com/buildingMee Intertek PCA-101 Version:21 December 2017 SFT-CCRR-OP-40b