Marvin Windows & Doors, War-road, Mn., is expanding into exterior siding, incorporating the same material it uses in its fiberglass windows.

Marvin will produce the new Apex Siding System at its Tecton Products subsidiary in Fargo, N.D., which Marvin co-founded in 1990 to supply fiberglass components to its window plants in Fargo and Roanoke, Va. 

Hanson Building Products, Ramsey, Mn., was selected as the first Apex distributor and will market the product to area builders, remodelers, and architects. 

The siding will be marketed as an alternative to wood or vinyl siding, reportedly with a finish four times thicker than paint and offering resistance to rot, mold, fading and warping.