Closed Cell Backer Rod
The closed cell backer rod is best in horizontal or flat joints as its closed cell structure keeps moisture from wicking through it. Armacell s hot rod xl is an ideal material for hot pour sealants.
Crl Ef14c 1 4 Closed Cell Backer Rod 100 Roll
Hbr is a closed cell polyethylene foam backer rod used in concrete construction.
Closed cell backer rod. Crl closed cell backer rod is a round flexible closed cell polyethylene foam with an exterior skin used as a backing and thickness control device for elastomeric and other cold applied sealants. It is much more robust which can make installation more challenging when compressing the backer rod into joints. Decks patios and walkways that sit outdoors more commonly use closed cell rods as a way to add insulation and waterproofing.
They can often be used interchangeably though open versions tend to be better for indoor environments where there isn t a lot of moisture. It helps prevent 3 sided adhesion while allowing you to control the depth of the sealant. It is commonly used in applications such as expansion and contraction joints curtain walls construction partitions parking decks and bridge construction.
Closed cell backer rod is commonly used in expansion and contraction joints where cold applied sealants are used such as curtain walls construction partitions precast assemblies and copings parking decks bridge construction building rehabilitations and more. Available in 3 4 in 20 ft. There are typically two types of backer rod open cell and closed cell.
Hbr acts as a barrier limits the depth of cold applied sealant required and prevents excessive sealant use. Closed cell backer rod spray foam mutual industries backer rods 1 5 in. Closed cell backer rod will not absorb water or wick water to joint walls which could cause adhesive failure.
Some closed cell backer rods are crosslinked pe creating a product that not only resists moisture but also can withstand sealant temperatures up to 400 f. Sika backer rod is used to partially fill deep expansion joints and cracks before application of your sealant. Closed cell backer rod is a domestic end product as defined in the buy american act title 41 usc 10.
A closed cell polyethylene flexible rope like foam joint backing material the material is virtually non absorbent and chemically inert to most solvents. A backer rod for cold applied sealants for cold application processes choose kool rod backer rod produced by w. Backer rods backer rod polyethylene slab expansion joints.
Hbr helps cold applied sealants assume the optimum hour glass shape to prolong the sealant service life. It is compatible with cold applied sealants and its round shape promotes the preferred hour glass shape for joint sealants. Size selection proper size selection is important as it controls the depth.
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