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Maximize Insulation in Minimum Headers

Alternative code-approved header designs for better energy performance.
A Mess by Design: Intentionally Restricted Plumbing

When following the code causes a disruption or a drip, it's helping to avoid bigger problems down the road.
Rules for Rooftop Solar

Solar PV now has a solid footing in the residential market, and the building codes have caught up—here's what you need to know.
The Laundry Wall Laundry List

With the complicated arrays of wires, ducts, and plumbing pipes they conceal, laundry room walls are common places for building code violations.
The Complicated Path From Decking to Dirt

Code expert Glenn Mathewson takes a closer look at the evolving code provisions for deck boards, joists, beams, posts, and foundations.
Guardrails vs. Handrails: Where Do You Need Them?

While they're both found on typical staircases, porches, and decks, guards and handrails have different purposes and code requirements.
Top 10 Water-Heater Code Violations

Installing a tank water heater might seem easy, but some of these common mistakes could be life-threatening.
The Basics of Makeup Air

Code expert Glenn Mathewson describes how to provide makeup air for a kitchen exhaust fan to prevent backdrafting of water heaters, furnaces, and other fuel-burning appliances.
A New Old Way to Vent a Kitchen Island

The combination waste and vent system is a simpler alternative to island fixture vents and air-admittance valves, and a recent code change may make it more popular.
Changes to the Building Codes

Code expert Glenn Mathewson explains how changes are made to the International Residential Code, with a chart detailing the code-development process.