Cool Roof Requirements: Kent vs Redmond
How do cool roof requirements rules compare between Kent, WA and Redmond, WA?
Kent and Redmond have similar restriction levels.
Kent, WA
King County
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 Kent rules →Redmond, WA
King County
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 →Key Facts Comparison
| Fact | Kent | Redmond |
|---|---|---|
| Code basis | Washington State Energy Code | Washington State Energy Code |
| Mandatory scope | Large commercial low-slope | Large commercial low-slope |
| Residential | Voluntary, incentive-based | Voluntary, incentive-based |
| County program | Green Building incentives | Green Building incentives |
Highlighted rows indicate differences between cities.
Kent 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.
Compare other topics
See how Kent and Redmond compare on other ordinance categories.
Want to add a third city?
Use our full comparison tool to compare up to three cities.
Open Comparison Tool