A hot attic is bad for several reasons.
Should my attic be hot in the summer.
Excessive heat deteriorates items.
If you re designing and building a new home keeping an unconditioned attic cooler in summer is pretty much irrelevant.
Poor insulation is usually the culprit although if you enter the attic on sunny winter day your attic space can be warmed by the sun more than your furnace.
The truth is your attic plays a major role in your home s overall energy performance and can significantly impact how much it costs to keep your living space comfortable.
Not the overabundance but the lack of insulation in the attic.
When it s hot outdoors it s hotter in your attic.
Not only will the attic heat up but if the floor of your attic isn t insulated properly that heat will come right into your home.
Your air conditioner will have to work harder to keep your home cool which means higher energy costs for you.
Attics how to other rooms home improvement insulation an unventilated attic can reach 150 degrees in the heat of summer 50 degrees higher than it should be.
For most homes the biggest concern is the effect of attic temperature on living space comfort.
If hot air is allowed to sit in your attic it could overheat the shingles on your roof and cause damage.
Having a properly vented attic is the best way to keep attic cool because it allows the hot air to escape during the summer.
Just make sure the ceiling is airtight and fully insulated and the temperature in the attic doesn t matter much.
In addition hot air in your attic could increase moisture levels which could result in wood rot and mold growth.
Unless your roofing system has insulation on the roofing deck and is designed without ventilation your furnace should not be heating your attic.
Another reason your attic is so hot is because of insulation.
During the summer heat a poorly insulated attic will allow heat into your home.
With enough exhaust vents and intake vents your attic has breathing room and is better cooled.
If your attic is too cold in the winter too hot in the summer or both it s time for some necessary home energy improvements.
High temperatures inside your attic shorten the life span of shingles.