Wool

Wool carpet underlay is specifically designed for use with carpets. It is made from natural wool fibers that are densely packed and compressed to create a firm and supportive layer between the carpet and the floor.

Advantages of wool carpet underlay include:

Insulation: Wool is an excellent insulating material, providing both thermal and acoustic insulation. It helps to retain heat within the room and reduce noise transmission, creating a comfortable and quiet living environment.
Comfort and Softness: Wool underlay offers a luxurious and soft feel underfoot. It adds an extra layer of cushioning, enhancing the comfort and overall plushness of the carpet.
Durability: Wool fibers are known for their strength and resilience, making wool carpet underlay a durable option. It can withstand heavy foot traffic and maintain its supportive properties over time.
Moisture Regulation: Wool has natural moisture-wicking properties, which can help to regulate humidity levels in the room. It can absorb excess moisture and release it back into the air, preventing the growth of mold or mildew.

However, there are a few disadvantages to consider:

Vulnerability to Clothes Moths: Wool carpet underlay, like any wool product, is susceptible to damage from clothes moths. Clothes moth larvae feed on wool fibers, potentially causing unsightly holes and damage. Regular inspection and preventive measures, such as moth repellents or frequent vacuuming, are recommended to protect wool underlay from moth infestation.
Cost: Wool carpet underlay tends to be more expensive compared to synthetic alternatives like foam or rubber. The higher cost is due to the natural material and the manufacturing process. It's important to consider the budgetary implications when selecting wool underlay for a carpet installation.

Despite the potential drawbacks, wool carpet underlay is favored by many due to its natural and sustainable characteristics. It offers excellent comfort, insulation, and durability. The susceptibility to clothes moth damage can be mitigated with proper care and preventive measures. The higher cost of wool underlay relative to other materials is a consideration, but it may be worth it for those seeking the unique properties of wool and its eco-friendly aspects.