Attic Roof Insulation Best Practices

July 18th, 2012

Attic roof insulation is extremely necessary in both hot and cold climates. When you increase the insulation levels in your attic roof, it will keep your home atmosphere comfortable and snug all round the year. Your home will stay warm during the frigid, bitterly snowy winters as the insulation will prevent heat from escaping through the attic roof. During the hot, sunny summers, your house will stay cool. This will save you more than 20 percent on your energy expenditure every month. Benefits of Attic Roof Insulation Attic roof insulation can help you save big bucks on your utility bills in the cold and frosty winters. It is easy to finance this home improvement project and it is also comparatively easier to perform. The main reason why attic insulation is vital for cold climates is because most of the heat loss during winters is caused through the attic, which results in high energy consumption. Attic Roof Insulation Best Practices
  • Before embarking on any attic insulation project, you have to prepare the attic and check for attic leaks.
  • Even before you can start the process of insulation, you have to seal every single air leak. You have to seal all the air leaks in and around the vents, sockets, window frames, door frames, holes and cracks and wherever else you can think of. You may even have to seal the knee wall and insulate the space behind the knee wall. You won’t be able to identify or locate these cracks and holes after completion of the insulation process. Hence, it’s best to seal these leaks before you insulate the attic.
  • You should also inspect the roof and see if any part is leaking.
  • If there’s any heat producing equipment like chimneys, you should block the area surrounding the equipment. However, remember to leave a 3 inch space between the lighting or electrical fixtures or motors or stove pipes and the insulation.
  • Your roof vents must be in perfect working order and meet the standards set down in the building codes.
  • You also have to ensure that air flow around the ridge vents and soft fit vents are not restricted. You can use insulation baffles to ensure that the vents remain unobstructed.
  • Before insulating your attic, check your electrical wiring around the house and fix it. If you want to take up any lighting improvement project, do it before everything is covered by insulation.
  • Ask your builder or insulation contractor to select the correct level of insulation so that it meets the R values in your area and exceeds the recommended value by a little. However, the insulation cannot be compacted.
In cold, snowy climates an R value of 49 in the attic is perfect. You can achieve the recommended R value by using 18 inches of fiberglass loose fill insulation. Many contractors use fiber glass batt insulation around the rim joints which may still result in heat loss. Stick to rigid foam boards and spray foam insulation to create air tight attic roof insulation.