Backer rod sizes, Select proper rod diameter and cut to length or use directly from spool. It will absorb water, so it sho. With a blunt instrument or roller, uniformly install rod at the level recommended by the sealant manufacturer, specifier or architect involved. During installation avoid excessive longitudinal stretching of the rod. Our backer rod (backstop / bond breaker), is designed to work with all popular sealants including NP1 Polyurethane, a Novalink Polyether, M1, Duralink, glazing sealants and self leveling sealants like Novalink SL or SL1 and SL2, as Open-Cell backer rod is flexible and very compressible fabricated shape (usually cylindrical), without a surface skin, that is composed of open-cell material. Choose from our selection of backer rods in a wide range of styles and sizes. When installing Sika® backing rods, be careful not to cut or puncture the surface skin. Shop foam backer rod and sealant at TruSupply. Select a Backer Rod diameter that is about 30% larger than the nominal width of the joint (but not less than 10% of the largest gap). Ideal for joint filling, caulking prep, and expansion joint support in construction and home improvement projects. Get free shipping on qualified Backer Rods products or Buy Online Pick Up in Store today in the Building Materials Department. For best results, diameter of the backer rod should be 1/8” larger than the width of the joint. The different types of backer rods available (open-cell vs. Generally the depth of the joint after the Backer Rod is installed is one half the width. Nov 26, 2025 · Choose the exact backer rod size needed to ensure maximum sealant flexibility and durability in any joint. For Hot-Poured-Sealants consult our Technical Depart-ment for heat-resistant quality. This table draws on the published material data sheets from several manufacturers. How to correctly size a backer rod for various joint dimensions to ensure optimal sealant performance. Sika<sup>®</sup> Backer Rod PH is closed-cell, extruded polyethelene foam backing rod, available in diferent diameter. We also provide all type of joint sealants. It’s available in spools in ¼” to 1 ¼” diameters or 6’ lengths for sizes over 1 ½” diameter. Jan 14, 2025 · The backer rod sizes chart below gives the appropriate backer rod sizes for various building joint widths. Open-cell foam allows air to pass through the backer rod, which allow the sealant to cure faster. Do not use as a backer, where sealant is heated and applied at a temperature above +70°C. If necessary, use the blunt tool or roller to secure backer rod in the joint. closed-cell) and when to choose each for specific applications. See table at the bottom of this page. Joint width to depth ratio should be 2 to 1 with a minimum depth of ¼” or a maximum depth of ½”. Standard backer rod is recommended for glazing installations, window and door applications, expansion joints, log construction, pavement joints or repairs, and precast concrete joints and copings. quire polyurethane sealants. Same and Next Day Delivery. Need it by the foot? Click here to see our variety of backer rod. Overview We stock Backer Rod in all types and sizes.
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