Feeling a chilly draft blowing in from your attic? It could freeze your home in the winter. There could be cracks or unsealed crevices up there that need to be sealed and insulated. Cold, damp, musty attics also attract mould and mildew that is harmful to your health. You can turn up the heating to keep warm, but that means higher energy bills.
If your attic is unfinished, it’s time to consider insulating it. This can save you as much as 20 to 50% on your energy bills, stabilize room temperature, keep your home warm in the winter and cool in the summers. Old attic insulation needs to be cleaned out and replaced with fresh new insulation too or it can attract rats and rodents to snuggle in as it wears out. If you notice temperature fluctuations in your home heating, it’s time to consider replacing attic insulation.
How Attic Insulation Works
Insulation is measured by its R-Value or thermal resistance. The higher the R-value, the better your home will be insulated. On average, your attic needs a minimum of R-49 insulation to keep it warm in cold climates, while R-38 is good for warmer regions.
Insulation is of several types:
- Roll-on is the simplest and cheapest to install. It fits snugly between studs and rafters, effectively keeping the air in.
- Blown-in is moisture resistant, keeps mould and odour away. It allows loose-fill to flow into smaller crevices to stop air from leaking out.
- Spray foam expands to tightly seal any crevices from where air could escape so it is considered the most energy-efficient. It also works more effectively than the others and outperforms them all.
Types of Attic Insulation
The air in your home leaves through the attic so your HVAC system has to work harder to keep your home sufficiently warm. When extra heating is required, your energy bills go up. A smart thermostat works well to regulate the temperature and bring down energy costs but by insulating your attic with extra layers of fire and insect resistant material, you can save money, lessen the strain on your heating and cooling system, while adding comfort.
Loose Fill: The easiest way to insulate your attic is to add extra material to the floor by pulling out the planks to add loose fill or blanket insulation over the floor. The loose fill fibres are stuffed in bags and installed with special machinery to the depth and density required. The fill can be blown in place. Loose fill can be made of fibreglass, recycled glass, sand that’s melted and spun into fibres, cellulose, recycled consumer paper and several other options. There are fibres made of rock or recycled blast furnaces too but there are costlier than loose-fill materials.
Polar Energy Systems, London, Ontario
Ideally, your home insulation can last for a hundred years or more but insulation ages and goes through changes. Your roof may need repairs that affect attic insulation too. Check out our services at Polar Energy System. We offer high standards of workmanship that save you in energy costs, leading the industry in residential and commercial insulation. Call us to find out more.