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It can also be installed by the traditional full spread method using S-288 adhesive over approved substrates and underlayments. The modified loose lay method requires that the flooring be cut 1/8" to 3/16" away from all vertical surfaces such as walls, cabinets, pipes, etc. This gap must then be filled with a good quality siliconized or acrylic caulk. • Transport and store flooring rolled face out on a cardboard tube, do not kink or distort. • Always roll flooring face out until ready to install. • Do not use products containing petroleum solvents or citrus oils to prepare substrates. • Just prior to installation, lay flooring out flat to acclimate to conditions and allow the roll- up stresses to relax. • Flooring and room temperature should be a minimum of 65 degrees F (18 degrees C) for 48 hours before installation, during installation, and 48 hours after installation. Minimum 55 degrees F (13 degrees C) thereafter. • Plan layout for minimum number of seams. • Accurately measure length and width of room. Included recessed areas/doorways. • Allow an extra 1-1/2" of flooring on each end for trimming. • If more than one piece of flooring is needed, allow for correct pattern match at seam. Suitable Substrates All substrates listed below must be properly prepared and meet certain requirements. There may be exceptions and special conditions for these substrates to be suitable for StrataMax flooring installation. (Refer to the Subfloors and Underlayment section of the Armstrong Guaranteed Installation Systems manual, F5061, for more details. Or visit • Concrete (on all grade levels) • Approved suspended wood underlayments • Single-layer, fully adhered, existing resilient floors • Ceramic tile, terrazzo, marble • Polymeric poured (seamless) floors StrataMax, because of its unique structure and design, can also be installed directly over suspended single-layer wood subfloors such as plywood or oriented strand board (OSB) when using the modified loose lay method. The subfloor system must be designed to meet or exceed applicable building codes with a minimum of 18" well-ventilated air space below. The subfloor panels should have a smooth, sanded face and show no swelling of edges or surface due to exposure to weather conditions or construction traffic. The panels can not be contaminated by staining agents. Otherwise, an additional 1/4" or thicker underlayment is recommended. Single-layer wood subfloors increase the potential for staining from the panel components, coated nails, construction adhesives, spills, overspray and show-through from texture and mechanical or water damage when resilient flooring is installed directly over them. Armstrong cannot be responsible for: • joint or texture show-through • tunneling and ridging over board joints • discoloration from stain sources in the panel, regardless of the type of panel used • problems caused by local climate conditions, basement wall and subfloor construction, or improper installation Do not install over: • Particleboard, or waferboard panels • Existing resilient tile floors that are below grade • Existing cushion-backed vinyl flooring • Carpet • Hardwood flooring that has been installed directly over concrete Job Conditions • All substrates must be sound, dry, clean, smooth, and free from excessive moisture or alkali. Remove dirt, paint, varnish, wax, oils, solvents, other foreign matter and contaminates that could cause staining or interfere with a good bond. • In renovation or remodel work, remove any existing adhesive residue* so that 100% of the overall area of the original substrate is exposed. • When installing over an existing resilient floor, use S-199 One-Part Embossing Leveler or S-194 Patch, Underlayment & Embossing Leveler/S-195 Underlayment Additive to fill and smooth any embossing in the old floor. This is particularly important when fully adhering StrataMax flooring. • The area to receive resilient flooring and the flooring materials and adhesives should be maintained at a minimum of 65 degrees F (18 degrees C) for 48 hours before installation, during installation, and 48 hours after completion. Maintain a minimum temperature of 55 degrees F (13 degrees C) thereafter. • Verification must be made that subfloor moisture levels do not exceed acceptable limits when installing flooring over concrete subfloors. Conduct a Calcium Chloride Test to measure subfloor vapor transmission levels prior to installation. Armstrong recommends a maximum acceptable moisture emission level of 3lbs/1000 sq.ft/24 hrs. for StrataMax flooring. If subfloor moisture vapor transmission levels exceed the recommended limit, the concrete must be allowed to dry out prior to installing the floor. • Radiant heated substrates must not exceed a maximum surface temperature of 85 degrees F (29 degrees C) * WARNING: EXISTING IN-PLACE RESILIENT FLOOR COVERING AND ASPHALTIC ADHESIVES. DO NOT SAND, DRY SWEEP, DRY SCRAPE, DRILL, SAW, BEADBLAST, OR MECHANICALLY CHIP O...