Winter Ready
Insulation & Ventilation
Michigan winters find every weak spot in your attic. Take the 30-second check and see if you have enough insulation.
Is your attic losing heat?
Low concern
Your attic sounds in decent shape. A quick check before winter keeps it that way.
Free Inspection →Medium concern
A few warning signs. You may be low on insulation or short on ventilation.
Free Inspection →High concern
Your attic is likely losing heat and risking ice dams. Let's take a look before the snow hits.
Book a Free Inspection →How much insulation should a Michigan attic have?
How deep is your insulation now?
Pick your depth. The dashed band is where Michigan attics should be.
Below recommended. You're likely well under R49. Adding insulation could cut heat loss and ice dams.
Close. You may be around R38–R49 depending on the material. Topping up to R60 is worth checking.
Looking good. You're near the recommended range. Make sure your ventilation is balanced too.
| Target | Blown fiberglass | Cellulose |
|---|---|---|
| R49 | ~18–22″ | ~13–15″ |
| R60 | ~22–27″ | ~16–19″ |
ENERGY STAR (2021 IECC) for Michigan's zones 5–7: R60 for an uninsulated attic, R49 if you already have 3–4″. Depths are approximate. Source
Recent Attic Jobs
Before We Got There
Don't forget ventilation: balanced intake at the soffits and exhaust at the ridge keeps the attic cold and dry, which prevents ice dams and moisture damage.