When laying down new carpet, experience is a must. While it costs less to purchase carpet and install it yourself, it may not be worth it in the long run. Over time a poorly installed carpet will begin to bubble in the middle of the room, making the room unsightly. A professional carpet installer can guarantee their work. The carpet will be stretched and secured correctly, and many installers will fix any problems with the carpet for a specified period of time after installation free of charge. Hiring a professional may be worth the peace of mind.