Knob-and-Tube Rewiring
Knob & Tube Wiring in Seattle Homes: Is Your Electrical System Safe?
Knob and tube wiring was commonly installed in homes from the 1880s through the 1940s. While it served its purpose decades ago, this outdated wiring no longer meets modern safety standards and can increase the risk of electrical fires.
Many older Seattle-area homes still have knob and tube wiring hidden behind walls and ceilings—often without homeowners realizing it. It can also lead to insurance issues and limit your ability to upgrade your electrical system.
Concerned about knob and tube wiring in your home? Our licensed Seattle electricians can inspect your electrical system, explain your options, and help you upgrade safely and efficiently.
Why Knob and Tube Wiring Is a Problem in Washington State
Aging and Deterioration:
Rubber insulation dries out, cracks, and exposes live conductors
Creates significant fire and electrical shock risks
Overloaded Circuits:
Original K&T systems were designed for minimal electrical demand
Cannot safely support modern high-power appliances, including heat pumps, EV chargers, HVAC systems, and modern kitchens
Insulation Fire Risk:
Covering K&T wiring with insulation—especially spray foam—is extremely dangerous
Loose-fill insulation is only allowed under strict conditions per Washington State Code (WAC 296-46B-394)
Improper installations are common and unsafe
Unsafe Modifications:
Old splices, DIY repairs, and partial upgrades often violate Washington electrical codes
Significantly increases the risk of fire and electrical accidents
What to Do If Your Seattle Home Has Knob and Tube Wiring
Schedule a Professional Electrical Inspection
A licensed Seattle electrician can assess your knob and tube wiring for:
Safety risks
Code compliance
Insurance eligibility
A professional inspection helps you identify hidden fire and shock hazards and plan upgrades safely.
Plan for Knob & Tube Replacement or Rewiring
Full or partial knob and tube replacement is often the safest and most cost-effective solution to:
Meet Washington State electrical code
Support modern electrical loads like EV chargers, HVAC systems, and smart appliances
Satisfy home insurance requirements
Work With a Trusted Local Electrical Contractor
If you’re planning insulation, home renovations, or electrical upgrades, working with an experienced Greater Seattle electrician ensures:
Compliance with Washington State Code (WAC 296-46B-394)
No delays or failed inspections
Safe, reliable electrical work that protects your home and family
Why Choose Us?
Locally Owned & Operated
Proudly serving the Seattle community with care and commitment since 2017.
Licensed and Insured
As licensed and insured contractors, we provide peace of mind and ensure all work meets industry standards.
Comprehensive Services
From electrical work to deck building and fencing, we’re your one-stop shop for home improvement
Versatile Expertise
From small repairs to large-scale renovations, we handle projects of all sizes with equal dedication
High Quality Materials
We use premium materials to ensure durability and lasting results
Warranty Assurance
We stand by our work and offer warranties for added confidence
What Our Customers Are Saying
Schedule Your Knob-and-Tube Inspection Today
If your home is in Seattle or surrounding neighborhoods, don’t wait until an insurance issue or failed inspection forces your hand. Contact a licensed Seattle electrical contractor today to schedule a knob and tube wiring inspection or replacement estimate.