6-30-2012 Client on Boston St here in the city needed a streeeetch! by Carpet Repair Baltimore | Jul 1, 2012 Baltimore Carpet Repair, Cleaning, Sales & Installation A client here in the city called because they had carpet ripples. Some call them carpet waves, or carpet bubbles. We use a power stretcher that pulls the carpet to “drum tight”. A power stretcher is the only tool effective in stretching carpet. CLICK ON PICTURE FOR CLOSE UP!!!!!!!!!!!!!!!!! .