Complex sentence: A major contributing factor to the crisis was the increase in the use of cladding systems such as acrylic stucco and exterior insulation finishing system (or EIFS), which are highly resistant to infiltration and exfiltration of water and moisture.
Split into simpler sentences: A major contributing factor to the crisis was the increase in the use of cladding systems such as acrylic stucco and exterior insulation finishing system (or EIFS). Such systems are highly resistant to infiltration and exfiltration of both water and moisture.