As an introduction, a modular home is constructed off-site in a climate-controlled factory in about a few days and anchored on the site after completion. Call your new home flat pack, LEGO blocks, or the modular home – they are all the same with noted technical exceptions. Below are construction methods that laid the bedrocks to three prominent factory-based prefab homes.
SIP Module-Wise Construction
The SIP module construction method got originated in America of the 1950s. SIPs are a materialistic method to building a prefab house. Structured Insulation Panels consists of Styrofoam cavity sandwiched in between Oriented Strand Boards (OSB). For instance, the OSB may be of the size of 7/16 inches being the outer layer of the sandwich and 5½ inches Styrofoam being the inner layer. As you can see, the benefits of SIP module-wise construction include cavity-based insulation, thermal resistance, airtight assembly, and fast-tracked factory process.
Cross Laminated Timber Framing
Cross Laminated Timber or CLT is a form of flat pack modular home where materials may size half a foot and feel robust like the prefabricated steel. Cross Laminated Timber is used by builders prominently because they bear the load of a prefab structure to the walls, floors and the roof. The CLT panels tend to have gaps to place pre-cut windows as well as patio doors, and are assembled on the site. CLT offers flexibility in construction and alternative home designs to a homeowner, and can also be insulated with batten strips.
Modular or Volumetric Construction
Volumetric construction produces three-dimensional modules in a climate-controlled factory, and then transported to the site for final assembly. In volumetric prefabrication, 90 percent of the modules are assembled in the factory reducing with drastically reduced landfill. In fact, modules can be transported in different shapes such as a basic structure or one filled with upright interiors as well as exterior. It is said that in volumetric construction, a dwelling may be prefabricated in up to four modules and the optional roof can be constructed on-site.
The timber-frame prefabrication methods are prominently used by builders to build the three-dimensional modules. The present emphasis, however, is on Cross Laminated Timber. Further, you may hear terms such as green home, LEGO module brick construction, pod-type modular home, etc., but please note they are all derivatives to a default prefab housing.