“Only assemblies are tested prior to installation to help assure that complaints are minimized. Jim Keene, president and owner of Keene Building Products, noted that his company’s QUIET QURL brand has undergone more than 600 tests. “End users want the guarantee that the product will meet strict building codes, as well as provide a quiet, noise-free environment to satisfy the occupants.” Tony Wert, business unit manager for ECORE International’s QT sound isolation underlayments, said the sound control ratings for his company’s products are backed by more than 200 independent tests. Make sure the lab test matches your floor/ceiling assembly, or you will not get the same IIC result.” Most quality underlayment companies will have more than one lab test. “There are many companies that are selling thin 2-3mm foam-based underlayment products claiming IIC ratings of 72, but contractors and installers must first ask if the company has a background in acoustics, and then ask for the lab IIC test. for Sound Seal’s Impacta Flooring division, said to be wary of high IIC ratings that serve mostly as a marketing tool. Bill Devin, national sales & technical mgr. Think of impact sound as the neighbors downstairs hearing footfalls in the apartment above them, and sound transmission as catching bits of talk and music from a loud radio in the other room. STC, on the other hand, measures the transmission of sound through a building. IIC is the rating of impact sound as it moves through a floor/ceiling assembly. First, it is important to understand the differences between IIC and STC. Here are some tips for choosing the proper product. However, choosing the proper noise control system is about more than just looking at numbers on a product spec sheet. ft.When it comes to sound control, most installers and contractors know that the finished installation will need to meet certain minimum IIC (Impact Isolation Class) and STC (Sound Transmission Class) requirements, and that’s usually where their knowledge ends. SAM® 3 is available in 3'x50' rolls (150 sq. Ideal for use with radiant heated floors and low voltage tile warming systems. Thin & medium-bed mortar installations (ANSI A118.4) of ceramic, porcelain, stone, marble, slate, granite tile, pavers, brick, hardwood, manufactured wood, commercial grade vinyl and other finished floors are also acceptable check with flooring manufacturer. Other Substrates: Ceramic and porcelain tile, stone, terrazzo, VCT/VAT, metal, painted and sealed floors and floors damaged by dry shrinkage and structural movement. Wood: Exterior or exposure 1 plywood, APA-rated sheathing, Sturd-I-Floor, hardwood, tongue and groove and OSB with standard face. SAM® 3 provides protection from in-plane, structural movement up to 3/8" for floors requiring crack isolation protection,įor protection against Moisture Vapor Transmission (MVT), use SAM® 3 and the appropriate NAC primer to provide protection of 10#/1000SF/24HRS when used with NAC TAC or NS97 Primer or 7#/1000SF/24HRS when usedĬoncrete: Poured, pre-stressed and pre-cast concrete, concrete backerboard, mud beds, gypsum, lightweight concrete and patching compounds. ![]() SAM® 3 has been tested and certified for sound reduction on hard surface substrates. NAC TAC, NAC TAC II or NS97 Primers are necessary components of NAC sheet membrane systems. SAM® 3 is composed of modified elastomers, sound deadening resins and reinforced woven fibers and is designed for use in applications with and without a sound rated ceiling assembly. SAM® 3 is a 90 mil thick (< 1/8"), self-adhering, sound deadening sheet membrane chemically formulated to reduce airborne (STC) and impact (IIC) sound transmission when used under hard surface flooring such as, stone, ceramic and porcelain tile, wood, commercial grade vinyl tile and more. SAM® 3 is a high quality sound control sheet membrane for surfaces that require impact and audible sound reduction, in applications with and without a sound rated ceiling assembly (SRCA).
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