How to Guide

R-Matte
®
Plus-3: Insulation for the Building Envelope
Attic and Crawl Space Applications
www.rmax.com (800) 527-0890
Application Rmax R-Matte
®
Plus-3
R-Matte
®
Plus-3 may be applied to the interior face of stud walls or roof rafters within attics and crawl spaces to
provide a layer of continuous insulation (ci). Simply nail the R-Matte
®
Plus-3 to the framing members and cover
with an approved ignition barrier such as 3/8” gypsum wallboard or 1/4 wood structural panel, particle board
or hardboard, as required.
R-Matte
®
Plus-3 has been tested to be left exposed in attics and crawl spaces without the code prescribed ignition
barrier, provided the space is limited to servicing utilities. The maximum thickness is 1” in walls and ceilings or up
to 4.5” in walls only.
Refer to R-Matte
®
Plus-3 data sheet for additional application/installation, compliances, thermal and physical
properties, limitations and warnings.
Warranty: See Rmax “Sales Policy” and applicable warranties for terms and conditions. Rmax does not assume any responsibility or liability for the
performance of any products other than those manufactured by Rmax. NOTE: All Rmax products must be tarped, placed on skids and kept dry
before and throughout construction.
2017-12
R-MATTE PLUS
®
-3
IGNITION BARRIER
Required if R-Matte Plus
®
-3
is greater than 4.5”
Notes:
1. Refer to local building codes for requirements on proper ventilation and bracing.
2. Either the white matte or reflective surface can be facing out. Additional thermal value
achieved if reflective surface faces an existing air space.

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