Floor Panels

Collective Carpentry floor panels offer a crucial component of the structure and are often required in order to complete the installation of wall and roof panels in an efficient, consecutive sequence.

We offer two primary types of floor panels:

1. Uninsulated floor panels

Most Collective Carpentry floor panels are mid-level floor panels that are platform framed and constitute part of the load path required to transition from lower level walls to upper level walls. While these floor panels may later be insulated on site to increase soundproofing between floors, these panels are typically left uninsulated such that site trades can use the cavities for duct, electrical, and plumbing runs as necessary.

9.5”, 11 ⅞”, 14”, or 16” I-joists (thickness and grade determined by engineer);
Equal-sized LVL is used at the rim around the perimeter of the building and/or at connections between groups of panels at a dropped beam or load-bearing interior wall
¾” T&G plywood sheathing, glued and screwed

2. Insulated floor panels

Floor panels are most often insulated in the shop when they constitute a part of the exterior building thermal envelope and thus are in contact with exterior conditions.

These include:

Insulated floor panel over a garage
Insulated floor panel over a deck or other exterior area

Most floor panels over crawlspaces, while these crawlspaces may not be conditioned and may essentially present close to exterior climate conditions, are not insulated in the shop due to the need to run service connections on site within this panel prior to insulating the panel.

Insulated Floor panels typically consist of (inboard to outboard, top: to bottom):

¾” T&G plywood sheathing, glued and screwed, seams taped airtight
9.5”, 11 ⅞”, 14”, or 16” I-joists (thickness and grade determined by engineer);
Equal-sized LVL is used at the rim around the perimeter of the building and/or at connections between groups of panels at a dropped beam or load-bearing interior wall
Optional – 5/8″ exterior gypsum board sheathing (for particularly fire-prone areas or buildings in close proximity to neighboring structures)
Pro Clima Mento 1000 airtight monolithic WRB (secondary airtightness, weather protection) / Pro Clima Mento Plus airtight reinforced monolithic WRB (to hold cellulose), taped airtight
3/4″ – 1 1/2″ vertical rainscreen strapping (& optional ¾” to 1 ½” horizontal rainscreen strapping)

Clients often ask if we deliver the first floor panel to go on top of foundation stem walls, and the answer is typically no, due to needs for both plumbing and electrical work in this typically insulated panel, and the need to have foundations backfilled before equipment can be brought in to install wall, additional floor, and roof panels. Therefore the majority of our floor panels are either mid-floor panels or ceiling panels under unconditioned attics.