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Thermasheath

-3: Insulation for the Building Envelope

Attic and Crawl Space Applications

www.rmax.com (800) 527-0890

Application Rmax Thermasheath

-3

Thermasheath

-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 Thermasheath

-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.

Thermasheath

-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 Thermasheath

-3 data sheet for additional application/installation, compliances, thermal and physical

properties, limitations and warnings.

Warranty: See Rmax “Sales Policy” and “Fifteen Year Limited Thermal Warranty” 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.

2017-11

THERMASHEATH

-3

IGNITION BARRIER

Required if Thermasheath

-3

is greater than 4.5”

Notes:

1. Refer to local building codes for requirements on proper ventilation and bracing.

Summary of content (12 pages)

PAGE 1
Application Rmax Thermasheath®-3 Thermasheath®-3: Insulation for the Building Envelope Attic and Crawl Space Applications Thermasheath®-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 Thermasheath®-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.
PAGE 2
Application Rmax Thermasheath®-3 Thermasheath®-3: Insulation for the Building Envelope Cavity Wall (Brick Veneer) Application Thermasheath®-3 is an excellent cavity insulation product fitting between the masonry block and finished brick veneer of any residential or commercial project. It may be secured to the dry face of the masonry block wall with a quality grade construction adhesive.
PAGE 3
Rainscreen Application Utilizing Rmax Thermasheath®-3 and Cedar Siding Choose the Best Side with Rmax Thermasheath®-3 Cedar siding has been a popular siding choice for years as it offers an attractive yet durable finish - providing a premiere sustainable option. Utilizing Rmax Thermasheath®-3 and R-SEAL Construction Tape provides continuous insulation for a more energy-efficient home, adding a full air barrier to the walls of the structure as well as a drainage plane for rainscreen applications.
PAGE 4
Rmax Thermasheath®-3 Cedar Siding Rainscreen Applicaion INSTALLATION: Step by step construction tips for basic rainscreen construction utilizing Rmax Thermasheath-3 under cedar siding (check with local building codes for specific requirements).
PAGE 5
Application Rmax Thermasheath®-3 Thermasheath®-3: Insulation for the Building Envelope Concrete Foundations Thermasheath®-3 may be installed horizontally under foundations and vertically inside of the footings. A separate vapor retarder sheet should be installed over or under the insulation against the crushed stone base and well tamped backfill or undisturbed earth. Simply lay in the insulation with tightly butted joints.
PAGE 6
Application Rmax Thermasheath®-3 Thermasheath®-3: Insulation for the Building Envelope Exterior Stucco Application Thermasheath®-3 may be used as the insulated sheathing under hard coat stucco finishes. It may be secured to the studs with bugle-head screws, galvanized roofing nails or common-nails driven through cap washers. Cover the Thermasheath®-3 with a suitable separation layer such as an organic or inorganic felt.
PAGE 7
Application Rmax Thermasheath®-3 Thermasheath®-3: Insulation for the Building Envelope Exterior Ductwork Application Rmax Thermasheath®-3 is suitable for use on the exterior side of existing ductwork. When the ductwork is solely on the exterior of the building, the insulation need only be protected from the outside weather conditions. As an example, this can be done with a waterproofing membrane installed per the manufacturer’s recommendations.
PAGE 8
Application Rmax Thermasheath®-3 Thermasheath®-3: Insulation for the Building Envelope Masonry Wall Application Thermasheath®-3 is applied to the interior face of concrete or concrete masonry walls to provide a layer of continuous insulation (ci) over the entire surface. It may be secured over or under furring strips, followed by a minimum 1/2” gypsum wallboard interior finish.
PAGE 9
Application Rmax Thermasheath®-3 Thermasheath®-3: Insulation for the Building Envelope Re-Siding Application Thermasheath®-3 may be used in retrofit construction provided the existing siding is sound and solidly attached. It is secured with galvanized nails of sufficient length to penetrate the old sidings, sheathings below and at least one inch into the existing wall studs. Then, cover the Thermasheath®-3 with a suitable new siding of aluminum, vinyl, fiber cement, wood or wood fiber based products.
PAGE 10
Application Rmax Thermasheath®-3 Thermasheath®-3: Insulation for the Building Envelope Roofing Application Thermasheath®-3 is laid over a suitable roof deck such as tongue-and-groove timber, plywood or metal deck and covered with a suitable layer of plywood, wafer board or OSB. Asphalt or wood shingles, concrete or clay tiles or a standing seam metal roof may be installed over the insulated roof deck according to the roofing system instructions.
PAGE 11
Application Rmax Thermasheath®-3 Thermasheath®-3: Insulation for the Building Envelope Stud Wall Application Thermasheath®-3 applied to the exterior or interior face of studs, to cover all studs, sills, plates and header constructions, provides a layer of continuous insulation (ci) over details not normally covered by insulation products. It may be secured to the framing or structural sheathing with bugle-head screws, galvanized roofing nails or common nails driven through cap washers.
PAGE 12
Application Rmax Thermasheath®-3 Thermasheath®-3: Insulation for the Building Envelope Vaulted Ceiling Application Thermasheath®-3 may be applied to the inside face of the roof rafters in vaulted ceiling construction to provide a layer of continuous insulation (ci) and increase the R-value of the roof. Simply nail the Thermasheath®-3 to the face of the rafter, cover with a minimum 1/2” gypsum wallboard and finish.