The Proven Power of Lomanco® Ventilation Systems
Grand Rising Exteriors trusts Lomanco® ventilation products for their proven quality, innovation, and performance since 1946. Lomanco’s durable, weather-tested systems enhance attic airflow and roof longevity. Our Lomanco-certified team receives hands-on training to ensure proper installation—because when we replace your roof’s ventilation, we use only Lomanco, the brand we trust most.



 




























