Instead of warm air entering your home rising to the top and escaping to a cooler environment the outdoor heat goes out of its way to enter your cool air conditioned house.
Does attic insulation help keep house cooler in summer.
An attic warmed by the heat of the summer sun beating down on your roof is doing both you and the planet a disservice.
They ve been well discussed here and other places but briefly they re not cost effective don t deal with the problem where it starts are using convection to solve a radiant heat problem and can even be dangerous by backdrafting combustion appliances and.
In other words use temperature controlled or timer d attic fans to keep your attic from getting too ridiculously hot.
When it s hot outside the stack effect operates in reverse.
To understand how attic insulation helps keep your home cool in the summer months you first have to be aware of the ways a poorly insulated attic can make your.
Solid wall insu la tion does exactly the same thing.
On top of that my ductwork in the attic would build up condensation and that would drip down on the plywood sheeting which.
Quality attic insulation will help your hvac system run at its peak efficiency cutting the energy costs by as much as half in some homes.
I hope this illus trates the impor tance of insu la tion not just as a win ter energy saver but also to help keep the home cool in the sum mer months.
This is the key to whether or not attic insulation can help keep your house cool in the summer.
However the utility of attic ventilation fans is actually quite a controversial topic.
How much does attic insulation truly help out with cooling cost.
When installing a foil type barrier the u s.
In fact it s just as important for staying cool in the summer as it is in the winter and here s how.
Does attic insulation actually help block the summer sun s heat.
Attack your hottest spots with low energy cooling.
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.
In hot summer months proper attic insulation will keep your cold air in and will keep warm air out.
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.
Good insulation reduces fan effectiveness.
But insulation is also there to keep you comfortable in summer.
Attic ventilation fans whether hard wired or powered by their own solar panels seem like a low cost and effective way to help keep your house cool.
So in answer to that question attic insulation is very important to keeping your house cool during a heat spell.