Purpose of insulating an attic
Since the attic is the topmost floor of a house, it is essential to insulate it. In hot and sultry climate the moisture dampens the room temperature as a result it becomes uncomfortable to live inside the house.
In freezing temperatures during even the central-heating process will not be effective if the attic and other open spaces are not well-insulated. So it will act as a heater and create warmth in winters whereas it will act as a cooler and protect inhabitants of the house from the damp, moist and humid
climate in summers. Attic insulation provides a thermal envelope which helps in maintaining a comfortable livable temperature all year around. The insulation need of a home in a cooler region is different from that in a warmer region.
Spray foam insulation attic
85% of the homes are insulated by fiberglass. But, nowadays Spray Foam Insulation is gaining popularity over the traditional method of fiberglass insulation. Spray foam is a preferable option as it takes the exact shape of the open spaces and creates an air-tight seal around the vent. It also covers uneven spacing like floor joists, pipes, ducts and wires. It is a great option because the foam expands rapidly in order to take the shape of the leaks, cracks, nooks and gaps. There are two ways of insulating your
home’s attic space by utilizing Spray foam Insulation. Spray foam insulation will protect your attic from weather damages and other problems caused by moisture.
Spray Foam Insulation for vented and non-vented attics
For vented attics, this method is considered to be very useful for the architects/builders. By this method, spray foam is used in place of traditional fiberglass batts i.e. the spaces of floor joists. The remaining area of the attic is not insulated and vented through the ridges. This system, very commonly used, by the engineers in the US may not be very effective.
For non- vented spaces, it is considered to the most useful and effective method in the industry. The foam is sprayed under the roof around the rim, between the joists, on the wall ends and in the soffit areas. A vented –attic generally records a temperature of 130 degrees in summer, which gives rise to
increase in the use of air-conditioners and thereby generating moisture.
Application of spray-foam under the roof insulates the area from extreme heat thereby cooling the atmosphere. The attic becomes as comfortable as another room. In this case, the surface temperature is lowered up to the level of 40F.
The benefits of adopting spray foam insulation for the attic are as follows:
1. Reduction in leakage and heat transfer from the ducts.
2. Air trapping is easier under the roof compared to the ceiling.
3. Dust, mold, and pests will be hindered entrance to the rest of the house.
4. Lower energy costs.