Question 1

How much does polyiso insulation cost per square foot?

Accepted Answer

National baseline, before Washington adjustments: Polyisocyanurate Insulation typically costs $2.00-$4.50 per sq ft. Your final price depends on project size, site conditions, and finish level.

Question 2

What are the labor costs for installing polyiso insulation?

Accepted Answer

National baseline, before Washington adjustments: Labor for Polyisocyanurate Insulation usually runs $0.69-$1.57 per sq ft. Access, prep work, and installation complexity drive the labor range.

Question 3

How do supplies affect the price of polyiso insulation?

Accepted Answer

National baseline, before Washington adjustments: Additional costs for Polyisocyanurate Insulation usually come from supplies at $0.24-$0.54 per sq ft; equipment at $0.16-$0.36 per sq ft. These items vary with prep, cleanup, and site conditions.

Question 4

What's the price of removing old insulation, including equipment and disposal?

Accepted Answer

National baseline, before Washington adjustments: For Polyisocyanurate Insulation, expect equipment at $0.16-$0.36 per sq ft. The exact amount depends on tools, hauling, and cleanup requirements.

Question 5

How much does polyiso insulation cost for a whole house?

Accepted Answer

National baseline, before Washington adjustments: Polyisocyanurate Insulation runs $2.00-$4.50 per sq ft. Materials ($0.91-$2.03) and labor ($0.69-$1.57) make up most of it; product grade, layout complexity, and prep work such as removal or repairs move a job within that range.

Question 6

Is polyiso insulation a good value compared to other insulation types?

Accepted Answer

National baseline, before Washington adjustments: Polyisocyanurate Insulation runs $2.00-$4.50 per sq ft. Standard products and easy access keep a job near $2.00; premium materials, tear-out, or hard-to-reach work push it toward $4.50. Compare at least three itemized quotes against that range.

How Much Does Polyisocyanurate Insulation Cost in Washington, District of Columbia?

$2.09 – $4.71

What you get at each price level

Basic

Standard

Premium

Cost Breakdown in Washington

Polyisocyanurate Insulation photo examples

Cost Factors in Washington, District of Columbia

What Affects Pricing

Local Price Adjustments

Frequently Asked Questions

References

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Component	Category	Price Range	Unit
Materials	material	$0.96 – $2.13	sq ft
Labor	labor	$0.72 – $1.63	sq ft
Supplies & Other	supplies	$0.25 – $0.57	sq ft
Equipment & Disposal	equipment	$0.17 – $0.38	sq ft