It does not allow surfaces that are subject to movement to separate. Copyright 2022 White Cap Supply Holdings, LLC. In addition, it helps to avoid cracks in some applications such as tilt wall panels. Concrete and Chemicals. The sealer's purpose is to prevent water, ice, and dirt from getting into the joint (and into the subgrade) and to prevent intrusion from below the slabincluding of radon. The bond breaker shall be applied at the manufacturing facility. A bond breaker is applied to the surface of the formwork before pouring concrete into the precast concrete. This installation featured our new AIR-SHIELD ALUMINUM SHEET MEMBRANE product. Legal Terms, Terms of Sale, and Privacy. Wherever, CERAMAR is a flexible foam expansion joint filler composed of a unique synthetic foam of isomeric polymers in a very, SPONGE RUBBER EXPANSION JOINT is produced to a uniform thickness and density from gray-colored, top-quality, blown sponge rubber. FIBRE EXPANSION JOINT is ideal for use on highways, streets, airport runways, sidewalks, driveways, flatwork, and scores of commercial and industrial applications. Resistant to sunlight induced oxidation damage when panel concrete placement is delayed multiple days. Precast products like concrete pipe, and u-shape drain are loaded into the truck using equipment like a crane. "}},{"@type":"Question","name":"Concrete Bond-Breaker","acceptedAnswer":{"@type":"Answer","text":"Bond breaker concrete is a water based bond breaker. Window and door applications. This article will help you dispel some myths about the proper use of bond-breaking products. It is a material the same as cement grout. It is used in special formwork in precast products such as cement pipes, concrete blocks, U-shaped drains, etc. Description: Brickform #LR-5 Liquid Release Bond Breaker forms a colorless barrier that virtually eliminates concrete build-up on mat-type, texturing tools and thereby keeping them flexible and minimizing wear. | Types of Beam Bridges | Advantage & Disadvantage of Beam Bridge, What Is Cinder Block? Non-membrane bond breakers can be either reactive or non-reactive. KEYWAY resists impact and will not whip or warp. Any areas accepting penetration of the water must be recoated until a positive seal is achieved. So that the surfaces of the concrete work independently. Many D.O.T.s have developed their own bond breaker specifications. Guide to Tilt-Up Bond Breakers A bond breaker is a "material used to prevent adhesion of the newly placed concrete to the substrate". The product and aqueous emulsion reacts with calcium hydroxide (Ca (OH) 2 ) in the concrete and forms a gel which seals concrete surface pores, restricting moisture entry and exit. Also available FIBRE EXPANSION JOINT is composed of cellular fibers securely bonded together and uniformly saturated with asphalt to assure longevity. After the TILT-CRETE film is dry, normal rain should not affect the surface. TILT-CRETE should be protected from all contaminates while drying. Joint type and spacing will vary with each project according to the kind of structure, climatic conditions, and anticipated stresses in the concrete. Types of Foundation for Buildings and their Uses [PDF], Compressive Strength of Concrete -Cube Test [PDF], Procedure, Results, 16 Types of Heavy Equipment Used in Construction, Calculate Quantities of Materials for Concrete -Cement, Sand, Aggregates, Methods of Rainwater Harvesting [PDF]: Components, Transportation, and Storage, Exploring the Impact of Construction Robots on the Industry, How to Maintain a Brick Chimney for Maximum Efficiency, A Shining Future: The Benefits of Solar Energy, What You Should Know Before Installing Mud Flooring. This article can help you follow the good production and construction process. b. It avoids compression cracks on tilt-up walls. Also, Read:What Is Structural Settlement | Causes For Structural Settlement | What Is Soil Settlement & Foundation Structural Settlement, In the modern construction industry, as the technology upgraded, a wide variety of bond breaker materials have been introduced. DESCRIPTION In this scenario, TILT-CRETEs resistance to rain is highly reduced. So that a joint can be provided in concrete. TILT-CRETE is used as a cure and bond-breaker in tilt-up, lift-slab, and precast concrete construction. Excellent stability; does not require continuous mixing throughout the application; the material must be mixed only prior to application. A non-reactive bond breaker bonds with a concrete surface to create a waterproof surface. Some bond breakers would do neither, and may be perfectly acceptable. Most bond breakers are designed to provide curing compounds to the top sides of casting slabs or molds and precast members. Any areas accepting penetration of the water must be recoated until a positive seal is achieved. A spray nozzle that produces a flow of 0.4 GPM under 40 psi (.276 MPa) of pressure is recommended. W. R. MEADOWS technical services department, Solvent-Based Curing and Sealing Compounds, Meets the moisture retention requirements of ASTM C 309 on steel-troweled surfaces. Get Traffic & Exposure. I have searched online for a standard on what type of oil / epoxy / sleeves to use, but nothing is coming up. (800) 518-2290, Providing the most comprehensive geosynthetic lines in the industry. Our bond breakers are formulated to leave no residue, stain, or discoloration, and contain no diesel, kerosene, waxes, or silicones. ASPHALT EXPANSION JOINT, SPONGE RUBBER EXPANSION JOINT, CORK EXPANSION JOINT and SELF-EXPANDING CORK EXPANSION JOINT, 10 (3.05 m) 2009-2021 The Constructor. Bond breakers do not affect the characteristics of concrete surfaces. - Davco TTB Plus & Granito Plus, Does not interfere with concrete placements, Can be used as mould release agent as well. Waterless materials include petroleum distillation, i.e., mineral infusions, essential oils, etc. A tough, lightweight, easy-to-use, semi-rigid joint filler available in strips and shapes fabricated to most requirements. Questionable areas can also be tested by dropping water on the surface. Geotextile bond breakers reduce material cost and install faster than traditional hot mix interlayers Easier installation with minimum training and equipment. is one of the most cost-effective ways of enhancing structural capacity of . Bond breaker tapes are available in following width:15mm, 20mm, 25mm, 50mm. Bond breakers prevent three-sided adhesion of the sealant (i.e. Please enter your email address. HIGHLY FUNCTIONAL JOINTING AND SEALING SYSTEM: CERAMAR horizontal sealant from W. R. MEADOWS may be used to provide an excellent horizontal sealing system for plaza decks, sidewalks, driveways, and commercial and industrial floors. Using braided sealant backing to compensate for a joint opening that is too large for the backing material. 3m bond breaker tape is used in construction. The American Concrete Pavement Association has created aGeotextile Separation Interlayer GuideSpecification. | Tributary Area in Column | How to Calculate Tributary Areas, Light weight Concrete | Properties of Lightweight Concrete | Type of Lightweight Concrete | Uses of Lightweight Concrete, What Is Folded Plate? Using a bond breaker can extend the life of the formwork. Please enter a 5-digit US zip code. They are also applied on concrete surfaces to reduce the cracking of slabs caused due to temperature and moisture fluctuations. Always verify the presence of a uniform bond-breaker coat as indicated by a dry, soap-like feel prior to placing panel concrete. A bond breaker is a separator applied between surfaces of concrete. Evaporates and leaves no residue, making it ideal for interior applications. The strength development of this concrete type must be hence factored in the project sequencing process. Most bond breakers are designed to provide curing compounds to cure the slabs and precast members because the use of chemical curing compounds prevents the proper functioning of bond breakers. splices. Concrete expands and contracts with temperature and moisture changes. 6 months from the date of production if stored properly in undamaged, original, sealed packaging. Abond breakeris a substance applied to concrete surfaces to guarantee that there is permanentbonding between the surfaces. Various bond breakers like Nox-Crete, Crete Lease, J6 Surelift, Reid, and Dayton Superior can be used in concrete bond breakers. Learn more . It is placed to ensure that there is no adhesive molecular bond between the surfaces. Article 100 of the NEC defines ground as "the earth.". Complies with National AIM, OTC Phase I and II, LADCO, Utah R307-361, CARB SCM 2007, and SCAQMD maximum allowable VOC requirements. The efficiency of formwork can be increased. Cuts easily on the job with a razor knife no breakage or waste. For both the curing and bond-breaking applications, once TILT-CRETE is sprayed on the surface, do not track over the slab until the surface is totally dry to touch. Products Tilt-up Bond Breakers Clean Lift 20/20 Premium reactive water-based tilt-up cure/bond breaker SpecTilt 100 Premium reactive solvent-based tilt-up bond breaker "}},{"@type":"Question","name":"Why Are Bond Breakers Used in Formwork? fully compatible materials with proven adhesion, designed to meet the needs of these high movement and often irregular joints, is called for. If less than the recommended amount is applied, the film may not be continuous or of sufficient thickness to inhibit inter-slab moisture penetration which may result in panels sticking to the casting slab. Bond Breakers Sec 2 2-3 Guide to Tilt-Up Bondbreakers A bond breaker is a 'material used to prevent adhesion of the newly placed concrete to the substrate'*. ","acceptedAnswer":{"@type":"Answer","text":"Bond breakers are used to extend the life of formwork. However, W. R. MEADOWS always recommends to inspect the slab to make sure of proper coverage. | Types of Well Point System | Advantages & Disadvantages of Well Point System. It is used in precast units to remove precast from the formwork. Abond breakeris a substance applied to concrete surfaces to guarantee that there is permanentbondingbetween the surfaces. The contractor and/or applicator is also responsible to ensure that application conditions are acceptable as noted on this data sheet and to ensure that the correct coverage rate is used. This is done to prevent its surface from sticking or bonding together. BOND BREAKER -- Dowels shall be entirely coated with a bond breaking compound such as white pigmented curing compound or other approved bond breaker material. : 038 109 500 SELF-EXPANDING CORK EXPANSION JOINT is formed and compressed under heat and pressure to permit expansion up to 140% of original thickness after installation, which allows the filler to compensate for concrete shrinkage. Provides both curing and bond breaking eliminates need for double inventory and handling. Whenever a casting of the slab is done, it requires an adequate quantity of water, so that the chemical reaction between cement and water can progress uninterruptedly. Atlas Easy-Lift FD is a high-performance, chemically reactive, water-based, fast drying cure and bondbreaker for tilt-up and precast construction. Bond breakers are applied to the surface of the formwork so that the concrete precast can be easily separated from the formwork. a water repellent, wax based bond breaker material. SPONGE RUBBER EXPANSION JOINT is produced to a uniform thickness and density from gray-colored, top-quality, blown sponge rubber. PVC Expansion Joint They are also used to resists shrinkage cracks, which may appear on the concrete during casting, due to the unexpected evaporation of water from the concrete surface. So that cracks in concrete can be minimized. In simple language, one is called water-based, and the other is called non-water-based. Flexible, lightweight, and can be formed around curved objects. It also provides enough strength to lift and move pieces of precast. In addition, they enable the precast unit to lift and move after it has been created to the desired shape. Bond breaker concrete forms a sheet-like structure between two surfaces of concrete. Sealants, caulking or other chinking materials will stick more easily to closed cell backer rods which have a better bonding surface area than an open cell product. bond breaker material delivered. | Method of Joint | Zero Force Member, What Is Plaster? PACKAGING Wax is also a popular bond breaker material which is being used by many countries. Demolition or Refurbishment: What are the Factors Controlling Decision-Making? I started this site to spread knowledge about Civil Engineering. The use of X-FOAM expansion joint combined with proper sealing and joint design per American Concrete Institute guidelines can help reduce unwanted cracking and early joint edge deterioration. Bond breakers allow for differential movement between the precast concrete backer and the stone veneer, helping prevent staining and cracking of the veneer. Bond breakers are similar to anti-stick material, applied on adjacent metallic and nonmetallic substrates such as concrete and steel, used in construction projects. During concrete construction, form oil, bond breaker, concrete splatter and other types of contaminants often contaminate reinforcement. As the dynamic loads are substantially decreased, it takes less time as well as less effort to carry a heavy load from one point to another. Water-Based Concrete Bond Breaker DESCRIPTION TILT-CRETE concrete cure and bond-breaker is a new, innovative, unique formula of proprietary, reactive organic materials in an aqueous dispersion. Expansion Joint Cap document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); You can find him on Facebook,Twitter, Tumblr, Instagram, and Google News, Twitch.tv, YouTube, Linkdin, Pinterest , Telegram. The use of X-FOAM expansion joint combined with proper sealing and joint design per American Concrete Institute guidelines can help reduce unwanted cracking and early joint edge deterioration. MINIMIZE STRESS DAMAGE AND ENHANCE THE PERFORMANCE CAPABILITIES OF CONCRETE WITH PROPER JOINTING TECHNIQUES TO ACCOMMODATE EXPANSION-CONTRACTION CYCLES. Bond breakers are used to extend the life of formwork. Many a time, rods with a coating of certain chemical compounds, wife mesh, have been used as a bond breaker. Often a time, the importance of bond breaker as an inseparable part of the waterproofing system is being overlooked. Provides effective bond breaker between casting slab and tilt-up or lift-slab panel. The top section pulls free once the joint has been placed correctly in the wet concrete. The reactive bond breaker will react with the concrete and produce crude soap. Legal Notices / Imprint Bond Breaker Geotextile Bond Breaker Geotextile A geotextile bond breaker is a nonwoven, needle punched fabric used between new concrete and an existing cementitious pavement layer. The coefficient of thermal expansion in concrete is 0.0000055 per linear inch of concrete per degree Fahrenheit of temperature change, yielding approximately .66 inch of movement per 100 feet with a 100 F (38 C) temperature range. 101 through 150. Questionable areas can also be tested by dropping water on the surface. DESCRIPTION It is ideally suited for joints in sidewalks, driveways, streets, and single- and multi-level floor slabs. It is composed of a blend of asphalts and mineral fillers, FIBRE EXPANSION JOINT is composed of cellular fibers securely bonded together and uniformly saturated with asphalt to assure longevity. SPONGE RUBBER EXPANSION JOINT is frequently used on bridge structures and sewage treatment plants that undergo rapid changes in temperature. Any dull spots must be recoated. CONCRETE CUTTING EQUIPMENT. 7.1 Introduction. Basically, it consists of a pressure-sensitive adhesive on one side, and a bond-inhibiting material on the other side. Bond breakers are used more in precast units. Country Bond breakers are normally used on tilt-up walls and precast segments to ensure the right pieces are cast together. | Types of Well Point System | Advantages & Disadvantages of Well Point System, What Is a Beam Bridge? Also, Read:Difference Between One Way Slab and Two Way Slab | What is Slab. Worldwide: 847.214.2100. Bond breakers are used on concrete surfaces to reduce the cracking of slabs due to fluctuations in temperature and humidity. Please see our Privacy Policy for details. TILT-CRETE TILT-CRETE is not recommended to be used with any other manufacturers bond-breakers. Sealers can also improve the appearance of floors and slabs. Partitions. same temperature conditions as allowed for pouring of concrete, typically above 40 degrees Fahrenheit. They also create a shear plane to help prevent reflective cracking and facilitate movement of water out of the pavement system. Type 3 bond breakers are effective where membrane application occurs either below, or on top of the screed. May help contribute to LEED credits: #164 is a time-proven, hot-applied polymeric sealant which combines a tenacious adhesive power with high resiliency. It is highly resilient, will, Building A Standout Education Facility (Case Study). Free of asbestos, Del Zotto's high-density, polymer-based Sure Seal seals most solid surfaces against moisture, dust and air and is often used on pre-cast concrete joints. Thank you! Some common materials used to create a bond breaker are: 6 to 10 millimeters polyethylene sheet This article explores the features and benefits of bond breakers in construction. Spray at right angles to the cure coat spraying pattern. Save my name, email, and website in this browser for the next time I comment. 2.11 BOND BREAKER TAPE Bond breaker tape shall be an adhesive-backed glazed butyl or polyethylene tape which will adhere to the premolded joint material or concrete surface. The material serves to prevent the concrete from bonding to the dowel bars, thus preserving the joint as a working one. A bond breaker like a wax-based curing compound helps to prevent bonding. What must be the maximum dry density of Granular Sub Base & Wet Mix Macadam used What is the Safe Bearing Capacity values for Different Soils? Like this post? Curtain wall joints. A light hose down keeps it bright and clean. TILT-CRETE cures the concrete floor or casting slab and top sides of panels once poured. What are the different types of handrails used in bridges? This allows membrane release from the bond breaker, into a compressible medium. Bond breakers are applied to surfaces to which concrete is poured by the monolithic slab method. Bond-breaker is applied to dowel bars to be placed in contraction joints in rigid pavement before placement of the concrete. Wind loads which act on lifting a precast member, are an example of dynamic loads. DO NOT DILUTE. Which can be cost-effective and time-saving for large structures. Terms of Use, USA Canada Franais Espaol International. North America: 800.342.5976 5.5 mil Low-Density Polyethylene Film Tape is frequently used after installing anchor rods in concrete to prevent cracks in the concrete surface. Time tested across the United States and Canada, this, DECK-O-FOAM expansion joint filler is a flexible, lightweight, non-staining, polyethylene, closed-cell expansion joint filler. free from burrs or other deformations detrimental to free movement of the bars in the concrete. Because many backup materials act as bond breakers, a separate bond breaker material is not always required. Bond breakers are usually designed for curing compounds to slab and precast members. Concrete Interlayer Bond Breaker Fabrics Home / Concrete Interlayer Bond Breaker Fabrics Historically, German engineers have been very successfully using non-woven geotextiles as interlayer bond breakers between lean concrete bases and concrete pavement surfaces for past 25 years. To prevent the sealant from adhering to the surfaces, bond breaker tape is applied along the whole width/length of the base of the joint. The function of a geotextile bond breaker is to reduce the stresses that can occur if two cementitious pavement layers bond. German engineers have been successfully using non-woven geotextiles as bond breakers for decades. The product should be used where appearance is a prime consideration in tilt-up and lift-slab construction. Bonds easily with common cartridge adhesives. The provision to accommodate movement at predetermined locations with proper joint applications prevents the development of stresses that could rupture the concrete. LEED INFORMATION Please see our Privacy Policy for details. I am a Degree Holder in Civil Engineering. Second Bond Breaker Coat Application Wait for the first coat of TILT-CRETE to dry. to 8-in. As shown in figure-2, a bond breaker tape in-between the joint sealant and joint filler is provided to facilitate free movement. APPLICATION Bond Breakers. Bond breaker Tapeis black self adhesive polyethylenetape that has excellent conformability to irregular surfaces. TILT-CRETE is not recommended to be used on broomed or rough surface finishes. In cast in situ construction, the concrete casting is done at prefabricated shops which join together with the old concrete surface, and once the concrete is poured, they become inseparable. SPEED-E-JOINT Features of Bond Breakers Used in Construction, Types of Bond Breakers Used in Construction, Advantages of Bond Breakers in Construction, Robotic Process Automation (RPA) in the Construction Industry. Colors: Stone Gray, Desert Tan and Dura-White. USES Using a bond breaker can easily reduce the time to clean the formwork. It is, X-FOAM expansion joint filler is a flexible, lightweight, non-staining, polypropylene, closed-cell expansion joint filler. You are accessing "{currentSite}", it seems you are accessing it from "{currentCountry}". Concrete Bonding Adhesive has very strong adhesive characteristics that eliminate the need to roughen up the surface of the existing substrate before applying new material. 6.3.2. All the Basics on Concrete Anchors: Functions, Installation, and Types. Use the resulting anticipated movement to determine the correct thickness of the control joint and proper spacing for placement of the joint. It is a chemical-resistant, ultraviolet stable, non-absorbent, low density, cost-effective, compressible foam that offers an extended service life in both interior and exterior applications. Bond-Breaker Strips: Asphalt-saturated, organic roofing felt complying with ASTM D 226, Type I (No. This helps the lean concrete to prevent excessive stiffness during the placement of the PCC layer. COVERAGE Preformed Contraction Joint These strips are usually 34-inch deep, using one-inch-by boards that are tapered for easy removal. Quikrete 1 Gal. Bond breakers will allow lifting and moving of precast pieces after stripping them from the form. Bond breaker concrete is a water based bond breaker. Cleanup To remove improperly or over-applied TILT-CRETE from panels, W. R. MEADOWS recommends using a commercially available, heavy-duty, concrete degreaser/stripper. Modulus rapture is the material's own physical property. Surface Preparation The casting bed should be clean and free of dust, dirt, and foreign matter. Evaporates and leaves no residue, making it ideal for interior applications. Therefore, contractors can complete the construction work of the building structure better and faster using the precast concrete unit. Cure & Tilt WB is low-VOC formulation that does not contain wax or hydrocarbon resins. These bond breakers have the property to hold the water in the casting slab. Dust Palliatives Use & Application. Liquid bond breakers are mostly petroleum-based materials used. E-mail: [emailprotected]. $Aq(b 0```%l YC?&(30B@lpLs36PJ/"C2 When 2 coats are necessary,apply the 2nd coat 1-2 hours after the first coat. They are not bond breakers. Bond breaker systems can be optimized by installing foam backing rod in the junctions, on top of the cured membrane, before laying the screed. PACKAGING TILT-CRETE is low-VOC formulation that does not contain wax or hydro-carbon resins. providing a bond breaker. If the water beads-up or forms a bubble and does not penetrate the concrete surface, it is sealed. SDS. To contact your local W. R. MEADOWS representative or for general correspondence, please click here. Mold configurations generally dic-tated the need for a stripping lubri-cant as well as a bond bre a k e r. Su c h Bond breakers and their effective use Guidelines to prevent stuck panels and aggravation Lift-slab . Thus bond breaker is used to prevent cracks, which may appear in concrete surfaces due to temperature fluctuations. Sika BondBreaker W is a water repellent, wax based bond breaker material. Backer rod and bond breaker tape are an integral component of a sealant joints and provide three main functions that allow the sealant joint to perform. Formulated and recommended for use with Brickform Texture . Select a countryland IslandsAfghanistanAlbaniaAlgeriaAndorraAngolaAnguillaAntarcticaAntigua and BarbudaArgentinaArmeniaArubaAustraliaAustriaAzerbaijanBahamasBahrainBangladeshBarbadosBelarusBelauBelgiumBelizeBeninBermudaBhutanBoliviaBonaire, Saint Eustatius and SabaBosnia and HerzegovinaBotswanaBouvet IslandBrazilBritish Indian Ocean TerritoryBritish Virgin IslandsBruneiBulgariaBurkina FasoBurundiCambodiaCameroonCanadaCape VerdeCayman IslandsCentral African RepublicChadChileChinaChristmas IslandCocos (Keeling) IslandsColombiaComorosCongo (Brazzaville)Congo (Kinshasa)Cook IslandsCosta RicaCroatiaCubaCuraaoCyprusCzech RepublicDenmarkDjiboutiDominicaDominican RepublicEcuadorEgyptEl SalvadorEquatorial GuineaEritreaEstoniaEthiopiaFalkland IslandsFaroe IslandsFijiFinlandFranceFrench GuianaFrench PolynesiaFrench Southern TerritoriesGabonGambiaGeorgiaGermanyGhanaGibraltarGreeceGreenlandGrenadaGuadeloupeGuatemalaGuernseyGuineaGuinea-BissauGuyanaHaitiHeard Island and McDonald IslandsHondurasHong KongHungaryIcelandIndiaIndonesiaIranIraqIsle of ManIsraelItalyIvory CoastJamaicaJapanJerseyJordanKazakhstanKenyaKiribatiKuwaitKyrgyzstanLaosLatviaLebanonLesothoLiberiaLibyaLiechtensteinLithuaniaLuxembourgMacao S.A.R., ChinaMacedoniaMadagascarMalawiMalaysiaMaldivesMaliMaltaMarshall IslandsMartiniqueMauritaniaMauritiusMayotteMexicoMicronesiaMoldovaMonacoMongoliaMontenegroMontserratMoroccoMozambiqueMyanmarNamibiaNauruNepalNetherlandsNetherlands AntillesNew CaledoniaNew ZealandNicaraguaNigerNigeriaNiueNorfolk IslandNorth KoreaNorwayOmanPakistanPalestinian TerritoryPanamaPapua New GuineaParaguayPeruPhilippinesPitcairnPolandPortugalQatarRepublic of IrelandReunionRomaniaRussiaRwandaSo Tom and PrncipeSaint BarthlemySaint HelenaSaint Kitts and NevisSaint LuciaSaint Martin (Dutch part)Saint Martin (French part)Saint Pierre and MiquelonSaint Vincent and the GrenadinesSan MarinoSaudi ArabiaSenegalSerbiaSeychellesSierra LeoneSingaporeSlovakiaSloveniaSolomon IslandsSomaliaSouth AfricaSouth Georgia/Sandwich IslandsSouth KoreaSouth SudanSpainSri LankaSudanSurinameSvalbard and Jan MayenSwazilandSwedenSwitzerlandSyriaTaiwanTajikistanTanzaniaThailandTimor-LesteTogoTokelauTongaTrinidad and TobagoTunisiaTurkeyTurkmenistanTurks and Caicos IslandsTuvaluUgandaUkraineUnited Arab EmiratesUnited Kingdom (UK)United States (US)UruguayUzbekistanVanuatuVaticanVenezuelaVietnamWallis and FutunaWestern SaharaWestern SamoaYemenZambiaZimbabwe, By registering, you agree to the Terms of Service and Privacy Policy .*. material with a surface skin - Open cell backer rod: primarily a foam material without a skin - Bicellular backer rod: sometimes called "soft" rod, this foam acts like a hybrid between open and closed cell rods - Bond Breaker Tape or Backing Tape: primarily a self-adhesive polyethylene or Teflon material - Hard rectangular . Section 250.4 (A) (1) states that grounded electrical systems "shall be connected to earth in a manner that will limit the voltage imposed by lightning, line surges, or unintentional contact with higher-voltage .

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