When it comes to debating woven versus nonwoven building wraps, every contractor has an opinion, and most are backed by years of jobsite experience.
The going assumption is simple: woven is tougher, nonwoven breathes better. Case closed.
Except it isn’t. Materials have evolved, and the old rules of thumb don’t always hold up under real testing. In this post, we’re putting both wrap types head-to-head across the categories that matter most to see which one actually comes out ahead.
Woven and nonwoven building wraps are typically made of either polypropylene or polyethylene. Where they differ is their construction.
As the name suggest, woven building wraps are fabricated with long strips of polypropylene or polyethylene tapes woven tightly together, similar to a traditional woven fabric. Resin is extruded into film which is then slit into the small sections (called “tapes”). The material goes through a process of beaming and weaving before a coating is applied (optional step). The weave creates a grid structure with inherent directional strength, while a microporous coating can enhance properties like breathability.
Nonwoven building wraps are more like a web of poly fibers. These continuous fibers are thermally bonded together into a uniform, high-strength web, creating a structure with no gaps, no grid, and no reliance on perforations to function. Some nonwoven wraps consist of a web of nonwoven fibers with a microporous coating added to the front-side. This coating repels outside moisture while allow breathability for other moisture to escape.
The structural differences have a real impact for performance. So, which is better? Here’s how they stack up across key performance criteria.
Advantage: Nonwoven
This is where the two technologies diverge most significantly. A quality nonwoven wrap is engineered to allow water vapor to pass through while blocking bulk water. Many woven wraps rely on surface perforations to achieve permeability, but those same openings can also allow water in. So when it comes to judging permeability and breathability, it’s imperative to factor in the bigger picture. And when you do that, it’s clear to see: nonwoven wraps lead the charge.
Advantage: Nonwoven
As mentioned above, many woven wraps rely on micro-perforations to allow for vapor permeability, but these perforations compromise water resistance. Nonwoven wraps, on the other hand, don’t require perforations. The continuous, bonded fiber matrix of nonperforated, nonwoven wraps has intrinsic water resistance. These wraps offer the best combination of breathability and excellent water holdout.
The winner here? Nonwoven wraps offer the better moisture holdout.
Advantage: Depends
Woven wraps are often lauded as having superior strength, but this shouldn’t be taken as a universal truth. The real truth is in the numbers.
When looking at one brand that makes both woven and nonwoven wraps, its woven wrap does outperform one of its nonwoven wraps when it comes to tensile strength per ASTM D5034. The woven came in at 63 Machine Direction/51 Cross Direction lbs/in, while the nonwoven tested at 59 MD/51 CD.
But the nonwoven wrap in this example doesn’t represent all nonwovens on the market. TYPAR, for example, exceeds even the woven wrap described above. In the same ASTM test, TYPAR BuildingWrap (nonwoven) achieved 67 MD/73 CD. What’s more, TYPAR’s tear strength (ASTM D5733-99) is five times greater than leading nonwoven competition.
Additionally, while some woven wraps may be equal or stronger in machine testing or when pulled at cross directions, they tend to tear easily and crack the coating when pulled diagonally.
Advantage: Depends
It’s not uncommon for building wraps to sit uncovered for weeks or months between installation and cladding. Prolonged sun exposure can degrade a wrap’s structural integrity and performance capacity, and not all products are engineered to withstand it. Most arguments in favor of woven wraps tend to cite the material’s UV resistance as a selling point. And compared with one of the better-known nonwoven wraps on the market, woven wraps do get the upper hand (4 months versus an average of 6 months, respectively). However, just as we saw in the tear and tensile strength comparison, not all wraps are created equally. TYPAR’s nonwoven wraps, for example, offer a minimum of 6-month UV resistance, 12 months for our commercial wraps, outperforming other nonwoven wraps on the market and meeting or exceeding the UV performance of woven wraps.
Advantage: Nonwoven
Non-woven house wraps offer superior flexibility and conformability, allowing them to wrap tightly around corners, windows, and other architectural details with fewer wrinkles and gaps. This makes installation easier and helps create a more continuous weather and air barrier. In contrast, woven wraps are typically stiffer, making them more difficult to fit neatly around complex features and requiring additional effort to achieve the same level of coverage and detailing.
For years, contractors who wanted the breathability and moisture management of a nonwoven wrap had to accept trade-offs in jobsite durability, and those who prioritized strength often ended up with a wrap that underperformed where it mattered most. TYPAR changes that equation.
TYPAR is a polypropylene nonwoven breathable weather membrane engineered to reduce the risk of moisture damage in the wall cavity. That means you get everything nonwoven wraps are known for—superior water holdout and exceptional moisture vapor transmission—but where TYPAR separates itself is in the areas where nonwoven wraps are traditionally challenged. It delivers tear strength that’s five times better than the competition. And for long or unpredictable job schedules, integrated UV inhibitors allow TYPAR® BuildingWrap™ to remain uncovered for up to 6 months, and TYPAR® Commercial extends that to a full year.
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