Building Envelope
From insulation and flashing to exterior sheathing, it’s essential that the building envelope of any home be tight, strong, and efficient. Find the latest technology for sturdy, dry, and energy-efficient homes here.

Tysvaer and Kulp chose prefinished white fiber-cement siding from Allura, which gives the home a modern farmhouse look but eliminates the need for painting. They also wanted to add an organic feel to the exterior, so they used Lignia, a fast-growing softwood that is modified to have the properties of a hardwood. “The durability, stability, and environmental credentials of Lignia wood make it a perfect choice for the SYMBI Duplex One project,” says Lisa Ayala, Lignia sales manager for North America. Lignia wood is used on the bay window, front porch and stairs, and rear deck. | Photos: J. Loren Photography

Tysvaer and Kulp chose prefinished white fiber-cement siding from Allura, which gives the home a modern farmhouse look but eliminates the need for painting. They also wanted to add an organic feel to the exterior, so they used Lignia, a fast-growing softwood that is modified to have the properties of a hardwood. “The durability, stability, and environmental credentials of Lignia wood make it a perfect choice for the SYMBI Duplex One project,” says Lisa Ayala, Lignia sales manager for North America. Lignia wood is used on the bay window, front porch and stairs, and rear deck. | Photos: J. Loren Photography