Carpet can stretch in high heat or humid conditions and may lift along a room perimeter if the tack strip holding the carpet fails. In most cases, the carpet can be re-stretched and re-attached. A ripple in Filtration soiling may appear as dark or grayish lines on carpet adjacent to walls or stairways, around vents and under doors. It’s caused by airflow over and through the carpet that allows fine, airborne particles to settle on the carpet surface. This type of soiling, while sometimes permanent, requires special treatments for effective removal. Contact a carpet cleaning professional for assistance. the middle of the carpet can occur after heavy furniture has been moved across a carpet that’s still wet from carpet cleaning. A professional carpet installer can correct both of these issues. Frequent candle lighting, smoking, fireplace smoke or vehicle emissions from an attached garage add considerable particles to the air. These dark particles can stain as they settle on the carpet surface. Because these particles move through a home’s heating system, staining is commonly found around heating registers. Can my loose/stretched carpet be repaired? Why are there dark stains around my heating registers and the perimeter of my room? 72 ANHWP.COM • ALBERTA NEW HOME WARRANTY PROGRAM