I have a charming 1940s cottage in Tennessee that really struggles with heat during the summer months. When temperatures rise above 90°F and the nights don't cool down, the inside temperature increases by about 2 degrees each day because our AC just can't keep up. We've started replacing original doors and windows, and while working on the doors, we discovered that the walls have little to no insulation. The attic has some pink insulation on the floor but none on the roofline, plus there are gaps and no vents—just a metal-slatted grate on one wall and a big gap above the stairs to a daylight basement.
I've read that attic insulation might be more critical than wall insulation. However, we are also in the design phase of adding a master suite in the attic which will include some dormers and roofline windows. I'm unsure about the best step moving forward.
1. Is there any insulation we can add to the attic now that won't be a waste when we remodel later?
2. Could I set up a box fan on the metal grate to blow out hot air?
3. Should I focus on wall insulation now and leave the attic as is until the remodel? Any tips would be super helpful!
3 Answers
Consider using TAP insulation for your attic; it's great for energy efficiency and even helps with pest control. We installed it and it made a noticeable difference in reducing our energy bills!
Insulation and air sealing can be tricky since they can lead to moisture issues if not done right. Focus on air sealing first—it's usually more important than adding insulation. You might want to seal off the attic from the living area while it has minimal insulation. You can add insulation to the attic floor areas you aren’t remodeling. As for your remodel plans, ensure you design for good insulation between your living space and the roof deck. Overall, prioritize the attic before you handle the walls!
I really appreciate your thorough response—this is super helpful! Thanks!
First, you'll want to clarify what kind of ventilation you have, especially since that metal grate sounds like a possible vent. For proper airflow, you usually need a dedicated intake (like soffit vents) and an exhaust (like ridge vents). If you only have the one grate and put a fan there, you'll be pulling conditioned air from your living space into the attic, which is not what you want!
Thanks for the advice!
Good to know! I'll definitely look into proper ventilation options.
Thanks for the tip, I'll definitely check that out!