Keys to Improving Moisture Management with Building Wraps

RainDrop Building Wrap on House

While tar paper was once the preferred covering for homes, today, synthetic materials known as building wraps is the material of choice.

Building wraps offer a lot of advantages for today’s houses and buildings, which tar paper just can’t match.

From making exterior cladding easier, to install, to improving insulation, building wraps are now an important and integral part of most exterior installations. And one of the most important jobs that they have is moisture control.

Tighter Building Envelopes

As energy costs continue to rise, builders and business owners have been looking for ways to help reduce costs and increase sustainability. This means that new homes and buildings are being constructed with a tighter building envelope than ever before, reducing the amount of air transfer between the indoors and outdoors, and minimizing the amount of energy loss.

Unfortunately, this tighter building envelope can lead to a build up of condensation inside the walls of the home. Moisture that is naturally generated indoors can’t escape the home as easily as it can in a building with less rigid insulating properties. As a result, moisture can enter the walls where it frequently becomes stopped: this leads to the growth of mold and mildew inside the walls, as well as an increase in wood rot beneath the exterior cladding.

One of the roles of newer types of building wrap is to help facilitate the movement of moisture from the interior of the home to the exterior, without allowing air infiltration. In other words, any moisture generated from inside the home or building needs to be able to evaporate through the building wrap, rather than becoming trapped inside the walls.

This helps make the home or building more comfortable, healthier and less prone to moisture problems (like wood rot) over time. Combined with properties that help stop air infiltration, the right building wrap can be an excellent solution for preventing condensation build-up in homes and buildings with a tight envelope.

Exterior Moisture Control

RainDrop on House

Moisture doesn’t just come from the interior of a building; it can also be found outdoors in the form of rain, snow and ice. From an exterior standpoint, building wrap can also be used to help create a drainage plane that will stop moisture from collecting beneath the siding, particularly in wood-framed houses, which are more sensitive to moisture build up.

Control or prevention of moisture entry is a real concern for many buildings, especially those in regions that see a lot of rainy or wet weather. Paired with a drainage plane, building wrap can help reduce the amount of moisture entry to a building beneath the exterior cladding.

In areas that see more moderate amounts of rainfall, building wrap can still be used to prevent some amount of moisture entry even without a weather barrier present. This can help prevent problems with some types of cladding, including newer stone veneers, which are highly susceptible to moisture accumulation.

Control Moisture in Buildings with Building Wrap

The three goals of moisture control in buildings are to prevent moisture entry, prevent moisture buildup, and to allow any accumulated moisture to drain and escape. Kingspan’s building wrap options can help you achieve all three of these goals, while still allowing the structure to retain the tight building envelope that is so necessary in today’s world of rising energy costs.

Invest in a high-quality building wrap for any job requiring better moisture control for installation beneath the exterior cladding, and start seeing better performance from the building across the board.

To learn more about wall system moisture management and to see the various building wrap solutions available from Kingspan including product brochures, specification documents and more, visit our building wrap resource page on our site.  

Kingspan Insulation North America

Head Office & Sales Office – North America

Kingspan Insulation LLC

2100 Riveredge Parkway, Suite 175

Atlanta, Georgia



Call: +1(800) 241 4402