<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Ripples could certainly be caused by over stretching especially since the stretching is almost always done by hand which does not evenly distribute the the force evenly along the strip of floor. However, I’v never seen anyone try to stretch a floor that didn’t already have ripples in it, but others have traveled more than I. <div class=""><br class=""></div><div class="">Sam</div><div class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Feb 12, 2016, at 12:28 PM, Dan Feith via Stagecraft <<a href="mailto:stagecraft@theatrical.net" class="">stagecraft@theatrical.net</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><span style="font-family: Geneva; font-size: 14px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">Generally ripples in thinner floors are caused by overstretching when they are being installed. Thicker floors won't do that as much. I've never seen a felt backed floor with ripples.</span><br class="Apple-interchange-newline"></div></blockquote></div><br class=""></div></body></html>