As long as the door does not have a glass insert, insulation values range from R-5 to R-6. Fiberglass and steel doors have five times more insulating value than wood doors of the same size.

That simple slab of wood (or fiberglass or steel) can convey a wealth of messages about you. In Southern California, exterior doors face a harsh environment. They’re subject to long periods of ...

Q: My house plan calls for steel beams that will support the floor joists and even parts of a brick wall. Can I substitute wood beams for ... before trying to handle long pieces of steel.