PEX Piping (Cross-Linked Polyethylene)

PEX tubing has revolutionized residential plumbing with its flexibility, durability, and ease of installation. The cross-linking process creates molecular bonds that give PEX superior strength, temperature resistance, and the ability to expand and contract without cracking. PEX comes in three types—PEX-A, PEX-B, and PEX-C—with PEX-A offering the most flexibility. Color-coding (red for hot, blue for cold, white for either) simplifies installation. PEX connects using crimp, clamp, or push-fit fittings without soldering.

Why It Matters for Denver Homes

PEX's freeze resistance is invaluable in Denver's climate. Unlike copper pipes that burst when water freezes, PEX expands to accommodate ice formation and returns to its original shape when thawed. This flexibility reduces freeze-related failures in exterior walls and unheated spaces. PEX installation costs 40-50% less than copper due to faster installation—fewer fittings required and no torch work. The material resists corrosion and scale buildup, maintaining flow rates and water quality for decades. PEX also reduces water hammer noise compared to rigid piping.

Common Applications

• Hot and cold water supply lines throughout the home
• Manifold systems with individual lines to each fixture (easier shutoff)
• Radiant floor heating systems with PEX loops in concrete or under flooring
• Outdoor shower and irrigation lines (with proper winterization)
• Retrofit applications where running new pipes through existing walls is challenging