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If the stairway is in several parts, divided by landings, measure each section separately. Don't assume that all risers are the same height, and all treads the same width. You can get badly fooled on this assumption in old buildings, and even in a few new ones.

Add a full inch to each complete step (tread and riser) for padding take-up. Laying of padding on stairs is discussed in more detail on pages 102 and 103.

In addition to the extra inch-per-step, stair carpet should be cut a foot longer than the over-all measurements call for, with the extra length folded under against the risers at the top or bottom during the actual laying. This precaution allows the carpet to be shifted months later when it begins to show wear over the nose of the tread. The carpet can actually be shifted many times in this manner before it becomes necessary to replace it. The customer expects this kind of foresight in an experienced carpet layer—and it's one of those touches that make for a satisfying job and more customers.

In measuring, always give the exact length of the stairway and let the cutter add the allowance for shifting—but only after you clarify this point with the cutter. In some stores the measurer is expected to add this allowance, while in others it is left to the cutter. To be on the safe side, put it in writing.

SPECIAL MEASURING TECHNIQUES

To measure a stairway that is angular or spiral (either throughout its length or only partly so), measure along the outside or longest line along which the carpet is to go. Remember to add a full inch for each step for padding take-up as previously noted.

If there is a turn in the stairs and a uniform uncovered margin is to be maintained on one or both sides, then it is necessary to cut each angular or spiral tread and riser from broadloom if a narrow breadth is being used. This can be done either by making a paper template, or pattern, for each tread and riser at the turn, or by marking off the step with chalk and then cutting and sewing the carpet to fit.

If you cut a template, mark "top" on the side of the template that is "up" when it lies on the tread. If broadloom is not to be used and you have to maintain a uniform stair border, proceed as follows: measure the straight steps in the usual manner, but allow about 6 in. extra for each angular or circular tread and riser, if 27-in. carpet is being used; if a wider breadth, allow proportionately more. Cut the carpet at the first angular or spiral riser; then turn the carpet around and apply approximately 3 ft 3 in. of the length to the width of the step. Next, cut and fit each tread and riser of the turn individually, and tailor where necessary.