These basic techniques can be used for many different areas where you will be installing faced fiber glass insulation.
INSET STAPLING (shown here):
- Place the insulation in the cavity and check to be sure it completely fills the cavity, top to bottom.
- Be sure that each sidewall batt is butted closely to the next one before fastening. Gently press the insulation at the sides into the framing cavity, until the outside edge of the stapling flange is flush with the face of the framing.
- When inset stapling insulation between framing members, start stapling at the top and work down. Use enough staples to hold the insulation firmly in place (about every 8") and avoid gaps and “fishmouths” between the flanges and framing.
- Place the insulation between framing members and check to be sure it fits the cavity at both ends. With facing material flush to the face of the framing, the flanges will overlap the framing. Staple the flanges to the face of the framing, using enough staples to hold the insulation firmly in place to avoid gaps and “fishmouths.”
- The flange of the faced insulation placed in the next cavity will overlap the previously stapled flange. When more than one batt is used, pieces must be snugly butted.
INSTALLING FACED INSULATION WITHOUT USING STAPLES
- CertainTeed’s high-performance batts (high-density R-13, R-15 and R-21) do not have to be stapled in place. The higher density of these products help hold them in place without a loss in moisture or thermal protection
- To install faced products by pressure fit, gently place the insulation into the cavity space between framing members. Make sure the insulation facing is flush with the face of the stud. The insulation must fit snugly at the sides and ends.
- Some CertainTeed products, such as DryRight, EZR and SpeedyR, which do not need to be stapled, are produced without stapling flanges.
To install unfaced insulation, gently place the insulation into the cavity space between framing members. It’s important that insulation be correctly sized for the cavity and fit snugly at the sides and ends. Wherever batts or rolls of any type are too short to fill a stud cavity, a piece should be cut to size to fill the gap. When insulation is too long, it should be cut to fit properly, not doubled over or compressed.