Specification

Re-Siding Construction - 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.
Vaulted Ceiling Construction - 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inchgypsumwallboard
and finish.
Attics and Crawl Spaces - 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 inch gypsum wallboard or 1/4 inch wood
structural panel, particle board or hardboard.
Concrete Foundations - Thermasheath-3 may be installed
horizontally under foundations and vertically inside of the footings. A
separate vapor retarder sheet should be installed directly against the
crushed stone base and well tamped backfill or undisturbed earth. Then
simplylayintheinsulationwithtightlybuttedjoints.Whilenotrequired,
tapingthejointsisacceptableusingRmaxR-SEAL3000,RmaxR-SEAL
ConstructionTape,orequivalent.
Roofing Construction-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.  NOTE: It may not be necessary to cover the insulation
with a nailable surface when used under a standing seam metal roof
assembly, consult manufacturer for details.
10 Asphalt Shingle Roof Construction
Thermasheath-3 Exterior Application A1.00
UNDERLAYMENT
ASPHALT SHINGLE
ROOFING SYSTEM
NAILABLE SURFACE
THERMASHEATH - 3
VAPOR RETARDER
(if required)
STRUCTURAL
ROOF DECK
WOOD RAFTER OR
TRUSS
FASCIA
Notes:
1. Consult shingle manufacturer for above deck
roofing ventilation requirements.
LIMITATIONS
Thermasheath-3 is not recommended, nor warranted, for use as a
commercial roof insulation directly under membrane systems. Consult
RmaxSalesforsuitablecommercialroofinsulationproducts.
Thermasheath-3isnotastructuralpanel.Itmustnotbeusedasanailing
base for any other building products. Furthermore, stud walls insulated
with Thermasheath-3 must be properly braced for lateral loads according
totherequirementsoflocalBuildingCodes.
WARNING
DO NOT leave Thermasheath-3 exposed. Polyiso foam is an organic
material which will burn when exposed to an ignition source of sufficient
heat and intensity and may contribute to flames spreading.
InstallationsutilizingThermasheath-3mustbefullyprotectedontheinterior
sideofthebuildingbyathermalbarriersuchasaminimumof1/2inch
gypsumwallboard.Masonryorconcretethatisaminimumofoneinchthick,
plywoodthatisaminimumof1/2inchthickandwoodthatisaminimum
of one inch nominal thickness may also be recognized as suitable thermal
barriers.ConsultyourlocalBuildingOfficialforspecificgoverningcodes
andrequirements.
The interior and/or exterior of the building should be protected with a
suitablevaporretarderand/orawaterresistivebarrier,ifrequired,based
onlocalBuildingCodesandclimatezone.
WARRANTY
SeeRmax“SalesPolicy”forwarranty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.
07 Stud Wall & Vaulted Ceiling Construction
Thermasheath-3 Interior Application A1.00
ROOF JOIST / RAFTER
STUD WALL
1/2" GYPSUM
WALLBOARD
THERMASHEATH - 3
Notes:
1. Refer to local building codes
for requirements on proper ventilation
2. Stud walls must be properly braced for
lateral loads according to the requirements of
local Building Codes.
VAPOR RETARDER
(if required)
EXTERIOR WOOD
SHEATHING
03 Re-Siding Construction
Thermasheath-3 Exterior Application A1.00
EXISTING SHEATHING
AND SIDING SEE
NOTE #1
AIR / WATER RESISTIVE
BARRIER (if required)
EXTERIOR SIDING
FLASHING TAPE
METAL FLASHING
TREATED WOOD
FOUNDATION WALL
SUBFLOORING &
FLOOR FRAMING
VAPOR RETARDER
(if required)
FOUNDATION
THERMASHEATH - 3
Notes:
1. Existing siding must be inspected and re-nailed to provide
for solid back-up to attach new sheathing and siding
materials. Deteriorated or rotted areas of existing siding
must be removed and replaced to restore original thickness.
2. Stud walls must be properly braced for lateral loads
according to the requirements of local Building Codes.
TERMITE SHIELD
1/2" GYPSUM
WALLBOARD