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Insulation for 300 Square Feet (R-13)

Insulating 300 sq ft with R-13 fiberglass batts takes about 8 bags once you add 10% waste. R-13/R-15 suits 2×4 walls, R-30+ goes in ceilings — set yours below.

01 / YOUR MEASUREMENTSUpdate any value
Batt bags
8 bags
Area
289 sq ftR-13 batts
Insulation to buy
318 sq ftincludes 10% waste
Batt bags
8 bags~40 sq ft per bag (check label)
Cost (est.)
$175~$0.55/sq ft for R-13

Planning estimate. Adjust allowances and sample prices for your supplier; tax, delivery, and labor are not included.

BEYOND THE MATERIALS

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Other sizes

Insulation for 200 sq ft (R-13)Insulation for 200 sq ft (R-30)Insulation for 300 sq ft (R-30)Insulation for 400 sq ft (R-13)Insulation for 400 sq ft (R-30)Insulation for 500 sq ft (R-13)Insulation for 500 sq ft (R-30)Insulation for 600 sq ft (R-13)Insulation for 600 sq ft (R-30)Insulation for 800 sq ft (R-13)