How many UnderFloor Mats are needed for my Installation?
To obtain an accurate measurement, look under the subfloor to see where mats can be stapled. Looking carefully at each joist bay, measure: 1. The width of each bay from the center to the center of each adjoining floor joist and also verify the space between each side to side (this should be 1.5″ less than the OC measurement for modern 2-by lumber (2″x8″, 2″x10″, etc). Our UnderFloor mats are designed only for 3 different joist spacing most commonly used in North American Construction. 16″ refers to the actual dimension of the Orange Mat material while the Blue Foil is approx. 1.5 – 2″ narrower than the Orange Mat so the foil can completely fit within the bay. 2. The length of open area in that bay that can receive a mat, and select the mat from the available sizes that fits each joist space. Remember that these mats cannot be cut shorter or narrower to fit, and CANNOT be cut or modified in any way to fit multiple joist bays. Do not include in these measurements areas that contain items
