Home External Wall Rock Wool Board Insulation

If your attic has adequate insulation and proper air sealing, and your home still feels drafty and cold in winter or too hot in summer, then you may need to add insulation to the external walls. Especially if you live in a very cold climate. If you replace the external wall panels of your home, consider adding insulation material at the same time.

In existing homes, consider using blown-in insulation material, which when installed using dense packing technology will provide a higher R-value. It can be added to external walls without causing too much disturbance to the finished areas of your home. If you are renovating and your wall cavities will be opened, look at two-part spray foam or wet spray cellulose insulation. If your wall cavities will not be opened, you can consider injection spray foam insulation. If you are doing this work yourself, rock wool board, extruded board, blanket insulation, although they cannot provide air sealing like two-part spray foam, may be an affordable option.

In new homes, first look at our new home insulation information, which will help you choose among the many insulation types on the market. If you are in the design stage of planning a new home, consider structural insulation panels, insulated concrete forms and insulated concrete blocks. These materials actually have insulation built in, and homes built using these products usually have excellent insulation quality and minimal thermal bridges. If you are building a traditional framed house, consider using advanced wall framing techniques. These techniques improve the whole-wall R-value by reducing thermal bridges and maximizing insulated wall area. You can also consider using insulation foam wall sheathing instead of wood board products, because they provide superior R-values. Foam sheathing: provides a continuous insulation layer, reduces thermal bridges through wood studs, saves energy and improves comfort. Heavier sheathing products are easier to cut and install. Prevents condensation on internal walls by keeping the interior of the wall closer to internal conditions. Usually costs less than plywood or oriented strand board. If you replace plywood with foam sheathing, your walls will need bracing or other structural reinforcement.