|
WEATHER-RESISTIVE
BARRIERS
How to select and install housewrap and other types of weather-resistive
barriers
INTRODUCTION
Weather-resistive barriers are a part of exterior wall systems
that protect building materials from exterior water penetration.
They perform like a shell for buildings—liquid water that
has penetrated the exterior finish does not pass through, yet
water vapor can escape. By keeping building materials dry, a weather-resistive
barrier improves building durability, decreases maintenance costs,
and reduces the risk of moisture-related problems such as bugs,
mold, mildew, and rot. Some weather-resistive barriers also reduce
air infiltration, cutting utility costs and increasing comfort.
TYPES AND COSTS OF WEATHER RESISTIVE BARRIERS
Building paper is a traditional paper sheet or felt material that
is asphalt coated or impregnated to increase its strength and
resistance to water penetration. It is primarily employed to protect
against moisture as a drainage layer. Housewrap refers to spun-plastic
sheet materials that are wrapped around a house to protect against
moisture penetration. If properly sealed, housewrap can also serve
as an air retarder to reduce infiltration. In some wall systems,
sealed waterresistive sheathing such as rigid foam board can serve
as the weather-resistive barrier, eliminating any need for building
paper or housewrap. Building paper typically costs about $300,
material and labor, to cover a 2,500-square-foot home. It usually
comes in a 3-foot roll that one person can install. Housewrap
costs about $450, materials and labor, for the same size house.
While it is available in 3-foot rolls, rolls are usually 9-feet
wide and require two people for installation.
Next:
WHEN AND HOW TO USE WEATHER RESISTIVE BARRIERS
Energy
Efficiency Articles
Hardwood
vs Laminate
The difference is more than you think, or maybe not!
Good
Carpet is best!
There is nothing like walking barefoot on great carpet
Caring
for Hardwood is easier than you think.
Just vacuum and you are done.
More
Articles...
|
