If this is true you ve got bigger problems to worry about than letting warm air escape from your home.
Attic bedroom too hot.
Within the attic insulation is a must.
And it can cause your air conditioner to work harder than it needs to and send your energy bills soaring with the temperature.
The attic is a huge determinant in keeping your entire home cool so the first place to start cooling your home should be the attic.
Low cfm similar to a bathroom vent 300cfm and only in the hot spots basically by adding an inline ducting fan to the return ducts for the hotspot rooms.
Usually much hotter up there when sun is out.
Fixing such issues first will help a lot to get the best benefits of any steps you take to cool down the room later.
It also blocks 98 of uv rays 99 of exterior light and 40 of outside noise.
Combine this with the hot air rising from the lower floors and you re looking at a perfect recipe for uncomfortable upstairs environments.
Locate such gaps and cracks and seal them pretty well.
Too many people believe that because heat rises ventilating an attic space during the winter means you re releasing warm air and creating a drag on your heating efficiency.
Overcome the hot attic effect with the right home improvements even if your attic is too cold in the winter it s likely that the temperature inside your attic will still be higher than the temperature outside during summer months.
You can go forward with caulking or weather stripping.
My idea is to vent the build up of hot air that has risen to the ceiling in the hotspot rooms into the attic so that air from cooler parts of the house can move in.
That s the simplest and easiest way to cool an attic bedroom with no insulation.
This is a very good day.
In addition hot air in your attic could increase moisture levels which could result in wood rot and mold growth.
Another reason your attic is so hot is because of insulation.
If hot air is allowed to sit in your attic it could overheat the shingles on your roof and cause damage.
An unventilated attic can reach 150 degrees in the heat of summer 50 degrees higher than it should be.
An overheated attic can bake asphalt shingles on the roof and cause them to deteriorate.
When the attic and attic access are not properly sealed and insulated the hot air coming in through the roof can leak into the lower floors of the home.
Having a properly vented attic is the best way to keep attic cool because it allows the hot air to escape during the summer.
But such gaps and cracks let outside hot air inside the attic room.
Roof shingles absorb a great deal of the sun s heat especially if they re dark in color.
Darker colors are more effective at blocking heat and light.
Not the overabundance but the lack of insulation in the attic.
The house is at 74f and the attic bedroom was at close to 80f.