We recently moved to this house and I am noticing things about it that must be addressed. For one thing, the house gets extremely hot during the summer months. Since we arrived in the winter this wasn’t a known issue until now. I was in a home improvement store when I overheard another lady complaining about the same thing. The clerk told her about radiant barrier. I didn’t want to seem like I was eavesdropping on the conversation but I needed to know how this product would help the situation. He told her that it blocks the rays from the sun and thus the house doesn’t heat up.