This blog post only applies to houses that are being built. If the house is already there, you aren’t going to change it. Most houses are called stick built, meaning everything is done right there. All the materials are delivered and put together on site.
There is a growing industry of prefab houses. This does not mean double wides and trailer park homes. These are whole houses that are made in a factory and shipped to the site. The walls and other parts come in sections and then they are attached together on site. That will be the subject of another blog post.
Pre Made Roof Trusses
There are other possibilities between stick built and prefab. In this case we are talking roof trusses. These are the structures on top of the house that support the roof. In stick built the joists and rafters are all assembled on site. They always depend on the exterior walls for support and may also depend on interior walls.
Trusses are prebuilt off-site and delivered to the construction site, ready for installation. They are designed and engineered for the needs of the house but also to withstand the typical weather where the house is being built. That may include a lot of snow, or lots of wind and rain.
They are built indoors so they are not affected by weather and moisture conditions when they are put together and they are cut by computer controlled saws so the fit is better than with stick built. They are labeled and bundled and shipped to the site to be installed. They will fit perfectly every time even though they are custom for each job. Unless of course, you are building a development with just a few models of homes. That can help reduce the price a bit as well.
They are environmentally friendly because they use 2x4s to a large extent rather than larger boards which means you don’t need to cut down larger old growth trees to make them.
Because they are designed to rest on the exterior walls, this means that you can move interior walls around at a later date without having to worry about whether they are a supporting wall or not.
Another major benefit of a truss versus stick built is that you can do interesting designs for about the same price. Instead of a simple flat ceiling, you can put in vaults and arches or other features and make the house look like a much more expensive house.
There are several places where you will save money. Because they are prebuilt, there is little if any waste so you don’t have to worry about cleanup and dumpster costs. Also, they install much more quickly than if it was stick built, so there is time savings which means cost savings. This leads to savings in borrowing as well since construction loans tend to be at a higher interest rate and you won’t need the loan as long.