Vinyl and polypropylene siding products provide exceptional rain screening performance—helping moisture drain out of the exterior wall assembly and dramatically reducing water accumulation. The EPS material used in insulated vinyl siding also allows the wall system to breathe and drain efficiently and will not absorb moisture. That’s important because climate change is producing heavier, more frequent rainfall in many regions.
Vinyl Siding vs. Moisture
Unlike fiber cement, brick, and wood, vinyl siding does not absorb, hold or accumulate moisture, which helps prevent rot, mold and poor indoor air quality.