Warm wall

Warm Wall refers to a type of construction that is used to improve energy efficiency and reduce heat loss through the building envelope. This method of construction is achieved by placing the insulation on the exterior side of the wall or roof assembly, creating a continuous layer of insulation that eliminates thermal bridging.

In traditional construction, insulation is typically installed between the framing members of a wall or roof assembly, with the exterior sheathing or roofing material attached directly to the framing members. This construction method can create thermal bridging, which is the transfer of heat through the framing members, resulting in increased energy loss and decreased energy efficiency.

In contrast, Warm Wall construction places the insulation on the exterior side of the wall or roof assembly, creating a continuous layer of insulation that eliminates thermal bridging. This method of construction is achieved by installing a layer of insulation board or batts over the exterior sheathing or roofing material, followed by a layer of protective membrane, and then the finish material. The insulation is then covered with a layer of protective membrane to prevent moisture infiltration.

One of the main benefits of Warm Wall construction is improved energy efficiency. By eliminating thermal bridging, Warm Wall construction can significantly reduce heat loss through the building envelope, resulting in lower energy costs and improved comfort. This is especially important in regions with extreme temperatures, where energy costs can be a significant portion of a building’s operating expenses.

Another benefit of Warm Wall construction is improved durability. By placing the insulation on the exterior side of the wall or roof assembly, Warm Wall construction can protect the framing members from moisture and other environmental factors that can cause decay and deterioration over time. This can result in longer-lasting building envelopes and reduced maintenance costs.

Warm Wall construction can also provide additional benefits, such as improved acoustics and fire resistance. By providing a continuous layer of insulation, Warm Wall construction can reduce noise transmission through the building envelope, resulting in a quieter indoor environment. Additionally, some types of insulation used in Warm Wall construction, such as mineral wool, can provide fire resistance, adding an additional layer of protection to the building envelope.

While Warm Wall construction offers many benefits, there are some considerations to keep in mind. One potential issue with Warm Wall construction is the potential for moisture infiltration. If the protective membrane is not installed properly or becomes damaged over time, moisture can penetrate the insulation layer, leading to decay and other problems. It is important to choose a high-quality protective membrane and ensure that it is installed correctly to prevent moisture infiltration.

Another consideration with Warm Wall construction is the potential for reduced air circulation. Because the insulation is placed on the exterior side of the wall or roof assembly, there is less air circulation between the insulation and the finish material. This can lead to increased moisture buildup and potential mold growth if the ventilation is not properly managed.

In conclusion, Warm Wall construction is a roofing term used to describe a construction method that places insulation on the exterior side of the wall or roof assembly. This method of construction can significantly improve energy efficiency, durability, acoustics, and fire resistance. However, it is important to choose a high-quality protective membrane and ensure proper ventilation to prevent moisture infiltration and other potential issues. By using Warm Wall construction, roofing professionals can help create buildings that are more energy-efficient, durable, and comfortable for their occupants.