Replacing a home’s exterior such as siding and window trim is a great way to improve its curb appeal and resale value. In fact, according to the 2018 Cost vs. Value Report put out by Remodeling Magazine, 76.7 percent of the cost to replace the siding is recouped upon resale.
Removing the old siding also gives homeowners the opportunity to improve the homes energy efficiency by adding a high-quality house wrap, like Barricade® Building Wrap, to the exterior of the home. When properly installed, house wrap protects a home against air and water leaks. When remodeling the exterior of a home, the correct application of house wrap around the existing windows and doors is particularly critical to preventing moisture and air intrusion and ensuring an energy-efficient, durable and healthy home.
Water- and air-tight windows and doors in homes and buildings is critical in stopping the accumulation of moisture in the wall system and achieving an energy-efficient structure. A buildup of moisture within a structures wall cavities is a serious problem because moisture can lead to wood rot (caused by fungi) and costly repairs. High moisture also leads to the growth of mold, which is unhealthy for the occupants of the building.
Unwanted air infiltration reduces the effective R-value of the wall assembly and reduces the air quality and energy-efficiency of a home or building. During an exterior remodel, correct installation of house wrap around existing windows and doors is essential to controlling unwanted air and moisture intrusion into the wall system.
House wrap is a synthetic material that goes over the wall sheathing and behind the siding (vinyl, wood, stucco, brick, or fiber cement siding). A building’s first defense against air and water infiltration is the siding. House wrap is a building’s secondary defense against air and water penetration. House wrap is also the backup barrier that keeps water off the framing and structural sheathing and prevents air movement through the wall system.
A crucial attribute of house wrap is its microscopic pores that permit water vapor to pass through; however, the pores are too small for air and bulk water. Without these microscopic pores, moisture would accumulate in the wall cavity.
Installing house wrap not only helps create a high-performing building but helps the structure meet the International Building Codes (IBC) minimum requirements for exterior walls. According to the IBC 1403.2, exterior walls shall provide the building with a weather-resistant exterior wall envelope, including a manner to stop water from accumulating within the wall assembly by providing a water-resistive barrier behind the exterior veneer.
When properly installed, house wrap protects a building against air and water intrusions. House wrapping a structure creates an energy-efficient, healthy, and comfortable building.
Properly installing new house wrap around existing windows and doors, in accordance to manufacture instruction, will reduce air and moisture intrusion and contribute towards a healthy, durable, energy-efficient home or building. Follow these steps to properly install wrap around windows:
When properly installed, house wrap around a window or door can prevent moisture intrusion; however, there are several other techniques to stop water intrusion to the wall system near windows and doors.