Best Insulation for Exterior Walls [Ultimate Guide]

Written by

Dumitru Nicolaescu

Updated:

December 18, 2024

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Best Insulation Types for Exterior Walls

[Exterior Wall Insulation in Northbrook, Illinois]

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Fiberglass Batts

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Spray Foam Insulation

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Blown-In Cellulose

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Rigid Foam Board

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Mineral Wool (Rockwool)

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Best Insulation for Enclosed Existing Walls

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Optimal R-Values for Exterior Wall Insulation in Chicago

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Insulation Type	2x4 Walls (3.5" cavity)	2x6 Walls (5.5" cavity)	Best For
Fiberglass Batts	R-13 to R-15	R-19 to R-21	Budget-conscious homeowners
Blown-in Cellulose	R-13 to R-15	R-20 to R-23	Retrofits, eco-conscious homeowners
Spray Foam (Open Cell)	R-13 to R-14	R-20 to R-22	Air sealing, moisture control
Spray Foam (Closed Cell)	R-21 to R-24	R-33 to R-38	Maximum R-value, moisture barrier
Mineral Wool Batts	R-15	R-23	Sound dampening, fire resistance
Rigid Foam Board	R-13 to R-15 (3" thick)	R-22 to R-25 (5" thick)	Continuous insulation, thermal bridging reduction

DIY vs. Professional Installation: Making the Right Choice

[Walls insulation from Exterior in Jefferson Park, Chicago]

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Conclusion: Investing in the Right Insulation for Your Chicago Home

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Frequently Asked Questions

1. How much does professional mold remediation cost?

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2. Can I just paint over mold?

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3. How quickly can mold grow in a crawl space?

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4. Will homeowners insurance cover mold remediation?

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5. Is it safe to store items in a crawl space?

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Wall Insulation

Best Insulation for Exterior Walls [Ultimate Guide]

Best Insulation Types for Exterior Walls

Fiberglass Batts

Spray Foam Insulation

Blown-In Cellulose

Rigid Foam Board

Mineral Wool (Rockwool)

Best Insulation for Enclosed Existing Walls

Optimal R-Values for Exterior Wall Insulation in Chicago

DIY vs. Professional Installation: Making the Right Choice

Conclusion: Investing in the Right Insulation for Your Chicago Home

Frequently Asked Questions

1. How much does professional mold remediation cost?

2. Can I just paint over mold?

3. How quickly can mold grow in a crawl space?

4. Will homeowners insurance cover mold remediation?

5. Is it safe to store items in a crawl space?

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