Mechanically remove all traces of old adhesives, paint, or other debris by scraping, sanding, or scarifying the substrate. The surface should be flat to the equivalent of 3/16" (4-mm) in 10-feet (3.0-meters), as described in ACI 117R, or as recommended by the flooring manufacturerĦ. Subfloor should be smooth to prevent irregularities, roughness, or other defects from telegraphing through the material. It should be free of dust, solvent, paint, wax, oil, grease, asphalt, sealers, curing and hardening compounds, alkaline salts, old adhesive residue, and other extraneous materials, according to ASTM F710ĥ. Subfloor shall be dry, clean, smooth, level, and structurally sound. Concrete floors must be fully cured and permanently dry. Installation Suggestion: To ensure adequate stiffness and reduce squeaking, wood subfloors should be double construction with a minimum thickness of one-inch (1")Ĥ. NOTE: For ceramic tile and stone, follow TCNA Guidelines NOTE: Particleboard, often called “chipboard,” Masonite, and Lauan are not suitable underlayments. Wood subfloors (especially when installed with use of grouted floor coverings like tile) must be prepared according to ANSI L/360 standards, as required by the floor covering manufacturer. Install ISOLayment QT-F over concrete, approved self-leveling materials, and woodģ. All subfloors/substrates must be inspected prior to installationĢ. Use the following subfloor requirements and preparation guidelines only when no such recommendations exist for the floor finishing product.ġ. NOTE: Please follow the subfloor requirements and preparation recommendations determined by the flooring manufacturer. II JOB SITE CONDITIONSĪreas to receive ISOLayment QT-F should be weather tight and maintained at a minimum constant room temperature of 65☏ (10☌) for 48 hours before, during, and after installation. All floor covering assemblies shall have prior approval before installation. It can be installed under most types of grouted, glued, and floating floors including ceramic tile, stone, marble, brick, pavers, hardwood, engineered wood, laminate, parquet, sheet vinyl and LVT, and carpet. Made from at least 92% resilient recycled rubber and backed by over 400 independent laboratory and field tests, ISOLayment QT-F has been selected and used in some of the best hotels and condominiums in the world. The ISOLayment QT-F line of products for impact sound insulation is engineered to provide better performance than any other continuous sound control product of similar thickness it has been rigorously tested to achieve proven results. Custom thicknesses are available upon request. ISOLayment QT-F is available in 48" wide rolls, and in four (4) standard thicknesses – 2mm to 15mm. The improved noise control can be substantial, especially for noise resulting from footfall. ISOLayment QT-F installs easily over concrete and wood framed construction. Do not use under VCT, vinyl composite tile, unless approved by the manufacturer of the VCT product. Manufactured in Pennsylvania from 92-percent resilient recycled rubber and backed by more than 400 independent laboratory and field tests, QT has been repeatedly tested, proven, selected, and used in some of the best hotels and multi-family developments in the world.ISOLayment QT-F sound control underlayment is a flat, resilient underlayment used directly under a variety of floor finishes including ceramic tile, sheet vinyl and LVT, wood, laminate, and stone for impact noise control. Can be installed under most types of grouted, glued, and floating floors, including hard tile, hardwood, engineered wood, laminate, LVT and carpet. QT is available in 48-inch-wide rolls and a variety of thicknesses, ranging from 2 millimeter (mm) to 15 mm. It’s engineered for use directly under most floor finishes, yielding exceptional impact sound insulation results, even under hard surface flooring for concrete or wood-framed construction. Created in 2000, QT is the original and leading recycled rubber underlayment.
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