Wall insulation is considered to be very effective for soundproofing. If your home has unnecessary noises loudly echoing around, then it is time to get your insulation done. It simply means that your structure lacks the required insulation. Wall insulation is an excellent way of resisting external noise disturbance. Most of the modern homes come with properly insulated walls. But some old homes which need a renovation will also need a thorough check on walls. Some wall insulations like cellulose, fiberglass and foam prevent and reduce noise not only from the outside but within the home or other structure too. Generally, loose fiber acts as a sound-absorbing agent which is the determining factor for sound-proofing. Insulations like fiberglass and cellulose are ideal for walls, ceilings and floors. Loose-fill cellulose and fiberglass insulation are considered as the best types for effective sound-proofing.