Cooling and Finishing--The cooling process for both asphalt felt and coated sheets is completed
in the next processing station, known as the finish looper. In the finish looper, sheets are allowed
to cool and dry gradually. Secondly, the finish looper provides line storage to match the
continuous operation of the line to the intermittent operation of the roll winder. It also allows
time for quick repairs or adjustments to the shingle cutter and stacker during continuous line
operation or, conversely, allows cutting and packaging to continue when the line is down for
repair. Usually, this part of the process is enclosed to keep the final cooling process from
progressing too rapidly. In cold weather, heated air is sometimes used to retard cooling.