Does Attic Insulation Help Keep House Cool. Department of energy recommends that you allow the material to droop between the attachment points to make at least a 1 0 inch 2 5 cm. Your house is cooler than the outdoors and the heat wants to occupy the cooler area. Affix rigid foam insulation to the attic side of the hatch or door.
Adding a radiant barrier prevents the sun from beating down onto your attic and heating it up which means this option can help keep your attic cool in the summer. However the barrier works both ways.
In fact it s just as important for staying cool in the summer as it is in the winter and here s how.
However the barrier works both ways. Attack your hottest spots with low energy cooling. Insulating your attic creates an added barrier between the roof which bears the burden of heat from the sun and your living space. In hot summer months proper attic insulation will keep your cold air in and will keep warm air out.