Name: FOAM-PAK鈩? II
OPEN CELL BACKER ROD
FOAM-PAK鈩? II covers the basic requirements for
Type O, open cell sealant backing to be used with
cold liquid applied sealants for use in building seals.
Transforming Foam into Innovation
FEATURES Physical Property Requirements
鈥? Meets all of the requirements of the 1990 Clean Air Act
鈥? Is a 鈥淒omestic End Product鈥? as defined in the Buy American Property Value ASTM Test Methods
Act, Title 41 USC 10 lb/ft3 (kg/m3),
Density ave. 1.7 (27) D 1622
鈥? Easy to apply
Outgassing (No. of bubbles) 0 C 1253
鈥? Non Gassing
鈥? Non-exuding Compression recovery, %, min >90 D 5249
鈥? Chemically inert
25% Compression deflection force,
鈥? Virtually dust free 3 (0.2) D 5249
psi (kg/cm2), max
Tensile Strength psi (kg/cm2), min 25 (1.8) D 1623
DESCRIPTION
TYPE: O - Cylindrical flexible sealant backings composed of
predominantly open cell material per ASTM C 1330.
FORM: Round Foam Rod
TEMPERATURE LIMITS: -65掳F to +400掳F TABLE 1
Product Packaging Information and
Foam Pak鈩? II
SIZE SELECTION (Table 1) Recommended Diameter Use for Joint Width
Proper size selection is important as it controls the depth of the
Nominal Linear Ft./ Bags Lin. Weight/
sealant bead. It must be oversized (25-50%) to fit tightly into Sleeve Bale
Diameter Bale Per Ft/ Bale
the joint and function as a bondbreaker to prevent back-side Color Dimension
in. - mm lft. - m Bale Bag lbs. - kg
adhesion of the sealant.
5/8鈥? 16 Red 12000 3658 24 500 18鈥漻18鈥漻32鈥? 45 20
BENEFITS 7/8鈥? 22 Orange 6300 1920 18 350 18鈥漻18鈥漻32鈥? 45 20
Limits the amount and depth of sealant applied into the joint.
1 1/8鈥? 29 Green 3600 1097 12 300 18鈥漻18鈥漻32鈥? 45 20
Provides a form to assist the sealant in developing the proper
shape. Acts as a barrier to the flow of sealant through the joint. 1 1/2鈥? 38 Yellow 2100 640 6 350 18鈥漻18鈥漻32鈥? 45 20
2鈥? 51 Blue 1200 366 6 200 18鈥漻18鈥漻32鈥? 45 20
APPLICATION
Expansion and contraction joints, window glazing, curtain wall
construction partitions, parking decks and bridge constructions.
JOINT PREPARATION
New joints must be cleaned thoroughly, removing any concrete form release agents, curing compound residue, laitance, or any foreign
materials. To ensure a good sealant bond, joints must be clean and dry when the new sealant is installed. In repairing old joints, all old sealant
or filler must be removed. This can be done by cutting or blowing out the old material or using any other procedure found to be effective.
Wire brushing and air blasting are very effective in removing old caulk residues.
INSTALLATION & SEALANT PLACEMENT
Just prior to placing the backer rod, clean all joints with high-pressure compressed air. Air compressors used for this purpose must be equipped
with traps for removal of oil and moisture. Install the backer rod at the depth recommended by the sealant manufacturer with a blunt tool or roller.
Refer to sealant manufacturer鈥檚 recommendations.
PRECAUTIONS
Sealant compatibility should be confirmed by the sealant manufacturer. Compatibility characteristics of sealants in contact with open cell sealant
backings can be determined by Test Method C 1087.
Although every effort has been made to assure the accuracy of this information and the safety and suitability of its products, Nomaco Inc. accepts no responsibility for results obtained by
the application of this information or for the safety and suitability of its products, either alone or in combination with other products. Users are advised to make their own tests to determine
the safety and suitability of each such product or product or product combination for their own purposes. In view of the various conditions under which this information and our products or
the products of other manufacturers in combination with our products may be used, Nomaco sells its products without warranty, and buyers and users assume all responsibility and liability
for loss or damage from handling and use of these products, whether used alone or in combination with other products.
Nomaco Inc 鈥? 501 NMC Drive, Zebulon, North Carolina 27597 鈥hone: 919.269.6500 or 800.345.7279 鈥? Fax: 919.269.7936 鈥? www.nomaco.com
December 2007
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