Protecting Your Lumber: The Science of Breathable Wraps

In the timber and wood products industry, the journey from the mill to the finished structure is fraught with environmental risks. Lumber is a hygroscopic material—it naturally absorbs and releases moisture to stay in equilibrium with its surroundings.

To protect this investment, there are two distinct stages of protection: lumber wrap for the journey (transport and storage) and housewrap for the destination (the building site). Using the wrong material at the wrong stage is a recipe for mold, mildew, and costly structural damage.

The Danger of the “Greenhouse Effect” in Transport

When lumber is wrapped for transport on flatbed tractor-trailers or railcars, it must be protected from rain and road grime while still managing internal moisture.

Standard plastic films or non-breathable covers can create a high-humidity “greenhouse” environment beneath the wrap. As temperatures fluctuate during transit, moisture evaporates from the wood and becomes trapped against its surface. This can lead to:

• Sapstain and mold, which can devalue premium lumber in a matter of days
• Dimensional instability, as trapped condensation causes warping or cupping
• Customer rejection, since builders expect mill-bright lumber free from staining
  
  

Stage 1: Protection for the Journey (IPG® Lumber Wrap)

For the physical rigors of shipping and yard storage, IPG offers a line of all-weather-resistant lumber protection solutions. These materials are the industry standard for protecting dimensional lumber and engineered wood products during transport and storage.

Premium & Supreme Polypropylene (PP) Series

The Premium and Supreme lumber wrap lines utilize polypropylene scrims to deliver an optimal balance of strength, durability, and moisture management:

• Supreme I, II, & III: Industry-standard wraps made with high-strength, lightweight polypropylene scrims coated on both sides to withstand demanding transport conditions 
• Premium II (110 GSM) and Premium I (120 GSM): Mid-weight solutions offering enhanced durability for longer hauls
• Premium (126 GSM): The heaviest polypropylene option, designed for maximum protection against the elements in the most demanding applications

Key Benefits of All IPG Lumber Wrap Products

• Exceptional durability: High-strength scrims resist punctures from sharp wood corners, heavy strapping, and forklift handling
• Weather and UV resistance: Engineered to prevent material breakdown during extended outdoor storage
• Brand visibility: Custom logos can be printed in up to three colors, turning every load into a mobile billboard

IPG Lumber Wrap Offerings

• Rolled goods
• Customized sewn covers
  
  

Stage 2:  Protection for the Build (Tuck NovaWrap™ Housewrap) 

Once lumber arrives at the job site and is used to frame a structure, protection requirements change. This is where Tuck NovaWrap™ Housewrap is applied.

Unlike lumber wrap, which is designed for shipping bundled wood products, Tuck NovaWrap™ is a specialized building wrap engineered specifically for the building envelope:

• Breathable weather barrier: Protects the structure while remaining stable in ambient temperatures ranging from -18°C to 38°C
• Moisture management: Allows internal moisture vapor to escape the wall cavity, helping prevent long-term rot and structural degradation
  
  

The Right Protection at Every Stage

Protecting wood is about using the right material in the right environment. IPG provides specialized engineered fabrics for every step of the process—from heavy-duty protection on flatbeds and railcars to breathable performance on the job site.

Don’t let trapped moisture compromise your product—or your reputation. Contact our ECP specialists today for a consultation.