Weather Barrier And Siding

Before the siding goes on weather protection needs to be built in.

Weather barrier and siding.

Any moisture getting behind the siding system can easily escape by draining downward. Installing siding directly against your weather barrier will greatly reduce the ability of a wall to dry. Just like siding a better weather barrier starts with better material. It s designed to be water resistant but vapor.

A high quality weather resistant barrier wrb is essential to controlling condensation and moisture infiltration in. And a common practice to avoid is installing strapping horizontally. This isn t very common anymore but it does still happen. Traditional weather barrier and flashing systems aren t well suited to the challenges that a worsening climate may present.

Wrap your home in extra security. A rain screen is constructed by fastening wooden boards vertically on top of the weather resistant barrier wrb to provide an air gap between the building and the siding creating a drainage plane. The homes i built then still look brand new today. However if you re interested a residing project offers the perfect time to examine your home s weather barrier and exterior insulation and improve it if need be.

However the product is susceptible to allowing moisture intrusion into the wall system through condensation and water infiltration. In the end the decision to install house wrap under your siding is a personal one that you should make after discussing it with your contractor. Hardiewrap weather barrier is installed over the sheathing beneath the exterior siding to reduce water and air infiltration. About hardiewrap weather barriers.

Even if a housewrap is correctly applied to the substrate a laborious and error prone process of taping and fastening installation of siding and trim will penetrate the wrap with thousands of holes. Certawrap weather resistant barrier provides an added layer of protection against air and moisture damage. Many builders have turned to huber s zip system sheathing a type of osb with a coating of resin impregnated kraft paper. Steel sided buildings require a weather resistant barrier.

It s part of the complete certawall weather deterrence system an advantage worth building into every home. The layer beneath the siding the water resistive barrier or wrb is what will protect the plywood or oriented strand board osb sheathing from any water that sneaks in. A siding rain screen is an important part of siding replacement and siding repair. Always install strapping to separate the siding from the weather barrier.

Steel siding itself is waterproof. I ve been using hardie siding in the texas heat for over 10 years. It contains a unique microtech coating that provides a better balance of water resistance and water vapor permeability reducing water intrusion while releasing moisture vapor from inside to dry.