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How Much Insulation for a 12×18 Basement?

The answer

238 square foot

For a 12×18 ft basement, with 10% overage included. Estimated cost: $285 at US national average pricing.

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square foot

Area
With 10% overage
Estimated cost (US avg)

How we calculated this

  1. 1. Area: 12 × 18 = 216 sq ft
  2. 2. Convert + overage: Add 10% for waste → 238 square foot
  3. 3. Cost: 238 × $1.20 ≈ $285

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