AhaBulbStuff Everyone Should Know
AhaBulb: Stuff Everyone Should Know · ahabulb.com/home-r-value

What does an insulation's R-value measure?

Start playing free

  1. How well it resists heat flow
  2. How much it weighs
  3. How well it blocks sound

🔒 The answer is for AhaBulb members. Members see the answer, why it's right and the official sources for every card of Stuff Every Homeowner Should Know, plus timed practice exams.

The first 50 cards of every test are free to play.

Play the free cards See membership

Like this card?
Play the game

References

  1. ENERGY STAR: Recommended R-values www.energystar.gov/saveathome/seal_insulate/identify-problems-you-want-fix/diy-checks-inspections/insulation-r-values Checked 2026-10-10.
  2. ENERGY STAR: Check your attic insulation www.energystar.gov/products/ask-the-experts/how-to-check-your-homes-attic-insulation-level Checked 2026-10-10.

Think this answer is wrong? Tap "Challenge this answer" on the card in the game and tell us why.

Test yourself in the game

Home & YardENERGY STAR says the minimum attic insulation in the northern U.S. is about what?Home & YardPea-size, flaky gray attic insulation called vermiculite may contain what?Home & YardIn the attic, what does EPA recommend you do first?

That's stuff everyone should know.