After the tar paper was installed on the exterior of the Hansen House, the next step was to install the venting network for the siding. Venting behind siding is necessary to prevent the major problems that could arise from trapped moisture. The venting material is cor-a-vent sturdi-strip which runs vertically and cor-a-vent SV-3 which runs horizontally along the exterior of the walls. The sturdi-strips and SV-3 are crush resistant extruded polypropylene core with fluted airways that provide maximum airflow. The SV-3 has an enhanced insect screen to prevent insects from getting in behind the siding. The siding is the HZ5 product line of HardiPlank. The HZ5 products are a special substrate composition designed to perform in climates with freezing temperatures, seasonal temperature variations, snow and ice. Timber bark is the color of the siding with arctic white trim and soffits. The Hansen House has 3 variations to the exterior which give it a unique look. As you approach the house you encounter the stone wall which is a continuation of the original and existing architecture of the farm. When you walk around the to the front the stone fades away to classic siding. This continues along to the side porch. Once you get to the back and side of the garage, the siding makes the final transformation into vertical board and batten. The soffit and trim are HZ5 product line in arctic white. The cupola, where the whole-house fan will be installed to exhaust hot air from the house and for air circulation, has the same siding, soffit and trim as the rest of the house. The main roof of the Hansen House is shingled while the porches and overhangs have standing seam metal roofs.