CertainTeed's Vinyl Carpentry Soffits are designed to provide a beautiful finishing touch for porch ceilings and soffit areas, or add a distinctive touch with vertical siding applications. The solid style is appropriate for both vertical sidewall and eaves installation. Ironmax soffit and vertical siding is appropriate for use in new construction for single family homes, multi-housing projects and light commercial developments. Ironmax is also an ideal product for remodeling.