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🌍 Environmental Rules/Cool Roof Requirements

Cool Roof Requirements: Kirkland vs Redmond

How do cool roof requirements rules compare between Kirkland, WA and Redmond, WA?

Kirkland and Redmond have similar restriction levels.

Kirkland, WA

King County

Few Restrictions

King County encourages cool roofs and reflective surfaces through the Washington State Energy Code and green building incentives, especially for large commercial reroofs in unincorporated areas and Metro facilities.

View full Kirkland rules β†’

Redmond, WA

King County

Few Restrictions

King County encourages cool roofs and reflective surfaces through the Washington State Energy Code and green building incentives, especially for large commercial reroofs in unincorporated areas and Metro facilities.

View full Redmond rules β†’

Key Facts Comparison

FactKirklandRedmond
Code basisWashington State Energy CodeWashington State Energy Code
Mandatory scopeLarge commercial low-slopeLarge commercial low-slope
ResidentialVoluntary, incentive-basedVoluntary, incentive-based
County programGreen Building incentivesGreen Building incentives

Highlighted rows indicate differences between cities.

Kirkland FAQ

Do I need a cool roof on my home?

No. Residential roofs in unincorporated King County do not need to meet cool-roof reflectance, though the program offers green building points if you choose one.

Is a green or vegetated roof allowed?

Yes, with proper structural review. Vegetated roofs can satisfy stormwater and cool-roof goals simultaneously and qualify for green building incentives.

Redmond FAQ

Do I need a cool roof on my home?

No. Residential roofs in unincorporated King County do not need to meet cool-roof reflectance, though the program offers green building points if you choose one.

Is a green or vegetated roof allowed?

Yes, with proper structural review. Vegetated roofs can satisfy stormwater and cool-roof goals simultaneously and qualify for green building incentives.

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