When energy codes tightened in the 2000s, "air barrier" went from a theoretical concept to a line-item code requirement. The International Energy Conservation Code (IECC) now mandates a continuous air barrier in all climate zones, and for many projects, the house wrap is expected to serve that function. But not all house wraps qualify. ASTM [...]
When spec'ing water-resistive barriers for production builds or custom projects, one of the first forks in the road is woven versus non-woven house wrap. Both formats dominate the market, but they're engineered differently and perform differently under real-world stress. This isn't a subjective debate — ASTM testing provides objective data on tear strength, water resistance, [...]
Complete guide to weather resistant barrier (WRB) requirements under IRC R703.2 and IBC. Covers ASTM testing standards, installation specs, and climate zone considerations.
Complete guide to installing house wrap under vinyl siding. Learn proper overlap, taping, and flashing techniques to prevent moisture damage behind vinyl cladding.
If you've ever shopped for house wrap or talked to a contractor about weather-resistant barriers, you've probably heard the terms "waterproof" and "water-resistant" used interchangeably. But here's the truth: house wrap is NOT waterproof - and it shouldn't be. This isn't a design flaw or cost-cutting measure. It's actually a fundamental requirement of modern building [...]
How to Calculate House Wrap for Your Project Calculating the right amount of house wrap for your construction or renovation project is essential to avoid costly delays and material waste. Whether you're a DIY homeowner or a professional contractor, knowing exactly how many rolls you need saves time and money. Too little house wrap means [...]
Tyvek HomeWrap has long been the default choice for weather-resistant barriers in residential and commercial construction. But that dominance does not mean it is the only option – or even the best one for every project. A growing number of high-performance house wrap products now compete with Tyvek on vapor permeability, water resistance, durability, and [...]
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House Wrap for Stucco: The Complete Contractor's Guide Stucco is one of the most demanding claddings for WRB performance. It's applied wet, traps water against the barrier during curing, creates alkaline exposure that degrades some synthetics, and requires extended drainage capacity to manage bulk water intrusion. The "standard house wrap" that works fine under vinyl [...]
Installing house wrap behind brick veneer is fundamentally different from applying it under vinyl siding or other cladding systems. The drainage plane requirements, installation sequence, and performance criteria are all specialized for masonry veneer applications. Understanding these distinctions is essential for preventing moisture problems and ensuring long-term wall assembly performance. Why Brick Veneer Needs a [...]
