One of the best ways to increase the value of a home is to add a room. It’s also a good way to adapt the home to the realities of a growing family that needs more space. To do this, there are several possibilities: dig the foundations, add a brand new structure, or winterize a large veranda so you can use it year round.
Remember that what goes into the walls matters as much as the walls themselves. Good insulation is essential to ensure comfort and energy efficiency. Indeed, Hydro-Québec estimates that an average house can lose up to 40% of its heat due to poor insulation of the walls, empty spaces between the roof and the ceiling as well as foundations. An important part of the thermal envelope of a house, insulation is the barrier between the raw air from the outside and the treated air from the inside. It is important, and this, throughout the year. While it is very expensive to heat a house in the winter, do not forget that the insulation helps keep the house cool during the summer.
Insulators come in many forms: semi-rigid insulation panels that are laid between wall studs, insulation blankets, rigid wall panels, particulate stuffing materials for small irregular spaces, insulating foam.
The insulation must be chosen according to the needs and taking into account the thermal resistance value of the product. The “R” value (or RSI value) is the thermal resistance to heat loss by conduction and per inch of thickness. The higher this “R” value, the more effective the insulation. To save energy, it is important that the insulation level of the areas of the house meet minimum R-values. We usually recommend:
• Basement floor: R5
• Basement walls: R17
• Walls above the ground: R20
• Attic and roof: R40
For example, if a person wants to insulate walls above grade level with rigid R7 panels, they will need to install 3-inch thick panels to obtain adequate insulation. Rigid panels are probably the easiest insulation to handle for DIYers. They can be covered with plasterboard or paneling. However, it is sometimes preferable to use a combination of rigid and semi-rigid insulation boards.
While you should not skimp on insulation, you can save money by choosing the right products and the right retailer. Employees of the Low Cost Materials Store in your area can help you choose quality insulation, while advising you to make your job easier.