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Shipping tolerances for Patterned Carpet Are: Widthwise Bow: Not to exceed 1-1/2 inches across the 12 foot width with no abrupt changes, hooks orre-curved pattern.Lengthwise Bow: also referred to as “Trueness of Edge” – Not to exceed 1⁄2 inch in 30 feet with not abrupt changesSkew: also referred to as Bias: not to exceed 1-1/2 inches across the 12 foot width. Pattern Elongation: also referred to as Lengthwise Pattern Repeat Variation: Not to exceed 2 inches ofvariation in 12 linear feet within one dyelot.If you are having trouble matching a pattern "stop" and call the manufacturer at once.NOTE: Pattern installation instructions and diagrams are shipped in each roll of carpet that illustrate how to properly measure the tolerances outlined above and how to deal with these variations during the installation process.Roll Sequencing:As stated above, rolls of patterned carpet must be sequenced so the longest pattern is installed first and the roll with the next longest pattern can be stretched to match the longer one. This procedure is critical in that it is impossible to shrink a longer pattern to match a shorter pattern. This will require that each roll be measured for pattern repeat prior to installation. Measuring all rolls for pattern repeat size will establish the sequence in which the carpet must be installed and will allow the installation to proceed without the necessity of dry laying the entire are which is often impossible on a project site.Equipment RecommendationsFor stretch in installation and for stretching to match pattern on glue down installation a Power Stretcher and/or a Crab Stretcher are generally required to obtain suitable matches. Knee kickers should only be used to position the carpet. The same procedures should be used for Double Glue Installations.A “dead man” is typically very helpful for obtaining suitable stretch on longer breadths.Corrective Steps for Bow and SkewIf the carpet is being installed as a stretch in over separate cushion, it is most efficient to assemble the side and end seams first being sure to seal both edges and use a premium quality hot melt tape. Bow and Skew would be dealt with as part of the stretching in process. Removing Skew and Bow requires forcing the pattern in the carpet to follow the walls where the ends of the carpet meet the walls. In cases where there is significant skew, forcing the carpet pattern to follow the end wall creates a large wrinkle in the carpet adjacent to that wall which must be worked to the opposite end of the room to cause the pattern to follow the wall on that wall. While doing this, a dry line is stretched across the carpet to allow the pattern to be pulled to a visually straight condition as the wrinkle is worked across the room.PAGE 114Designs protected by US Copyright laws shelmarccarpets.com | 888.504.3100 INSTALLATION INSTRUCTIONS