Bond Breaker or Backer Rod Installation: Install bond breaker or backer rod as specified to regulate depth of sealant. No bond or adverse reaction shall occur between the bond breaker and the sealant. Indoor Air Quality For Interior Floor Joint Sealants; S Indoor Air Quality For Interior Acoustical Sealants; S Indoor Air Quality For Interior Caulking; S SECTION 07 92 00. in deep joints, the sealant depth must be controlled by closed cell backer rod or soft backer rod. Bond breaker tape: primarily a self-adhesive polyethylene or Teflon material; Not Recommended Materials A rigid joint filler or sealant backing in joints that will. e. This clear, tough plastic tape with a clear polyethylene adhesive backing is eight mils (. As we11 as the backup material having been either poorly positioned for depth, or inadequately held so that it moved when the sealant was applied. Bond breaker tapes are available in following width:15mm, 20mm, 25mm, 50mm. This clear, tough plastic tape with a clear polyethylene adhesive backing is eight mils (. Bastion 300ml Bond Breaker Joint Sealant (0) $9. Primary use shall be with new joint construction and remedial joint. - 1 - Types of bond breakers Bond breakers can be flexible sealants like silicone or polyurethane, bond breaker tapes, fabric mesh or foam rods. CHARACTERISTICS / ADVANTAGES Esay to use Closed cell Asists with joint design Assists with sealant profile Provides bond breaker Compatible with cold applied sealants (polyurethane, silicone)joint movement can be accommodated in a thin bead of sealant than in a thick bead. Bond Breaker Tape: Polymer tape compatible with joint sealant materials and recommended by sealant manufacturer. Terminal joint, type HMA, shall consist of a sleeper slab, concrete lug, polyethylene bond breaker, and pre-compressed foam joint. Floor tiling with a 3mm joint size may include silicone filling to full depth, as long as a bond breaker is installed to the backing substrate to maintain two-wall adhesion. Available in a 300ml cartridge and as a 600ml sausage. Sikaflex-1a can be used in green and damp concrete applications. 421. • Sanitary grade for interior and exterior use. 1. The polyethylene bond breaker shall be an approved polyethylene sheeting having a thickness of 6 mils or greater. Allow for proper sealant wetting of the joint surfaces. Bolt down the collar to the drain flange. 3. Davco K5 Bond Breaker is a neutral cure silicone designed to be used as a bond breaker in the installation of Class II & III waterproofing membranes. 020 8524 1931. Flashing at lintels and sills (shown in Figures 2 and 3, respectively) is very similar. For good adhesion, the joint interface must be sound, clean and dry. 000. 4. essential that bond breaker tape or polyethylene closed cell backer rod be used to regulate joint depth and prevent three sided adhesion. Use a sealant backing or bond breaker tape to eliminate "three-sided adhesion. Do not prime or puncture the backer rod. G. (800) 421-6144. Backer Rod is an i ntegr al component of sealant joints, it provides three main functions that allow the sealant joint to perform. This ensures the correct and uniform sealant depth along the whole length of the joint. 7. joint sealant and no bond or reaction shall occur between the rod and the sealant. 3 BOND BREAKERS 2. Use CRL Bond Breaker Tape to create proper two-way sealant bonds. The ability of a sealant installation to remain weathertight is critically depen-dent on proper preparation, continuity, durability of the sub-strates to which the sealant will adhere, and compatibility ofSealant placement is critical. When cured it forms a tough, flexible seal and bond, capable of cyclic expansion and compression movement. 3 The primer and sealant should be compatible measured at any point coinciding with the top level with the bond breaker tape or joint filler material of the sealant should be not less than the minimum used. It is important for sealant to bond to joints in two places so it can expand properly. from adhering to the back of a raked joint or to the backup), allowing the sealant to freely deform in response to building movements (see Figure 1c). Figure 1. 1 "Min. Remove all dirt, laitance, loose material, mould release and curing agents, and foreign matter. The cured. (See data sheet for the type of sealant to be used). THESE ARE SPECIAL PROVISIONS AND THEY SHALL PREVAIL. Inside Corner Joint: Where substrates are abutting and no-to-minimal joint movement is anticipated , provide bond breaker tape in the corner extending no less than ” (6 mm) out from the corner in BOTH 1/4 directions (see Image 2). Recess Joint Sealant Polyethylene Bond Breaker Tape Polyethylene Bond Breaker Tape Recess Joint Sealant Joint filler board In a typical joint the sealant should adhere to both opposite surfaces of the sealant slot but not to its base, leading to two sided adhesion; not three sided. 421. The use of a bond breaker is not required in expansion joints containing cellular polyethylene joint filler, backing rod (Vetoflex PBR). Besides shape and size, an important attribute to consider is the. • For a joint size larger than 1 inch, the depth should be kept to between . Easy Seal Bond Breaker is a waterproof sealing band that is used at. 2. Bastion 100mm x 50m Waterproof Reinforcing Fabric (0) $19. For window perimeter joints, such as fillet beads or angle beads around windows and doors, the minimum. When used as a "backing" in expansion joints or cracks to help control the amount of sealant used or the depth of the sealant in the gap, the backer rod serves two primary functions. Uncategorized 1 Oct, 2022. The use of a bond breaker prevents undesirable three-sided adhesion. Clean and dry the joint or crack and install a new bond breaker before placing the sealant. PRIMING3. Soft backer rod should be approximately 25% larger in diameter than the joint width. 1-11). g. Joint not properly tooled. Mastic is a form of sealant or adhesive used to fill the joints or as a bond for different materials and gaps. Finish Coat F. Emer-Proof Joint Seal Tape performs as the waterproofing system bond breaker, avoiding the use of sealant beads and backing rod bond breaker methods. Install shower angles and door angle, glue into position with sealant. Remove loose particles remaining after cleaning operations above by vacuuming or blowing out joints with oil. Click here to access Bastion 300ml Bond Breaker Joint Sealant – User Guide When you’re in need, we’re here to help ! We offer a range of services including plumbing ,. When cured it forms a tough, flexible seal and bond, capable of cyclic expansion and compression movement. The Work in this Section covers all sealant and caulking materials and. A bond breaker must be installed at areas subject to movement, wall/wall junction, wall/floor junction, sheet joints and seams, penetrations and. c. therefore, sealant wastage is reduced. 3 mm). sticking to the bottom of the joint and then tearing when the joint opens. 3. Backer rods should be closed-cell polyethylene foam. from adhering to the back of a raked joint or to the backup), allowing the sealant to freely deform in response to building movements (see Figure 1c). Contact CRL Customer Service. For oil-based paints undercoat with water-based primer. SKU: EUCO7002G. To properly install sealant, you need to provide a joint between two materials. Always use bond breaker tape or closed cell backer rod for support on horizontal joints. • is impacted by sealant joint MOC (including the substrate Adhesion: Sealant joint failures in the biomedical facility environment are frequently due to. 1. backer rod or foam bond breaker tape is applied over it, and the sealant installed and tooled. Bond-Breaker Tape: Polyethylene tape or other plastic tape recommended by sealant manufacturer for preventing sealant from adhering to rigid, inflexible joint-filler materials or joint surfaces at back of joint where such adhesion would result in sealant failure. Material shall act as a bond breaker and shall be circular in cross section. 2 cm) thick. Gripset BRW Fillet: A preformed butyl rubber profile designed for use at wall/floor junctions as an integral part of the Gripset BRW Sheet waterproofing system. Bond breaker tapes are obtainable in the mentioned width:15 mm,. If the sealant bonds in the wrong areas, it may tear or stretch to the point of failure. Figure 4 shows a section of sealant removed from a failed joint. The bond breaker may be incorporated in the backup material. Thioflex 600 multi-component joint sealant is based on a liquid polysulphide polymer, which when mixed and applied, cures to form a tough, rubber-like seal. horizontal hourglass shape). it into the joint channel without stretching it lengthwise. Working joint depths should never exceed 1/2" (12 mm) or be thinner than 1/8" (3 mm). Suitable as a back-up filler for most liquid sealants Ideal for stopping contaminants such as soil entering into expansion slots and joints. bead. Where the joint configuration will not permit a backer rod, CHEM LINK recommends that an alternative bond breaker be used. 01 WORK INCLUDED A. • Use backer rod or bond breaker tape to eliminate a situation of "three‐sided adhesion" • Use 2:1 width to depth ratio to accommodate more movement than a thick joint (i. For use with all Bastion Waterproofing Membranes. Joint Filler, Backer Rod and Breaker Tape a. Compare. 1 DESCRIPTION: A. )Sika® Tite Undertile is a membrane with high extensibility and is designed for use with a 12mm Bond Breaker, a bead of Sika® Neutral Cure silicone must be tooled off to form a 12mm wide bond breaker. In a typical joint the sealant should adhere to both opposite surfaces of the sealant slot but not to its base, leading to two sided adhesion; not three sided adhesion. Sealants will fail in cohesion (split) if bonded on. highest paying part-time jobs in germany for international students 2022 / 10 / 02Expansion Joints - - All expansion joints must be isolated from the membrane by a minimum 12mm wide bond breaker tape that covers the entire width & length of the joint. 5”. 0-6. It is important for the sealant to bond to joints in. It shall be compatible with the joint sealant and no bond or reaction shall occur between the rod and the sealant. Click here to access Bastion 600mL Bond Breaker and MS Joint Sealant – User Guide. It is widely utilised as a gap filler and/or bond breaker for wall joints and floor, as a filling. 1. Contact CRL Customer Service. 1 litre can, average coverage 10m2Bond breaker and closed cell back-up material for use with joint sealants. 2 Non-porous substrates 8 4. )it into the joint channel without stretching it lengthwise. Soft backer rod should be approximately 25% larger in diameter than the joint width. The ratio of joint width of sealant to depth should be 2:1, however, in all cases, the sealant must be no wider than 30mm or deeper than 5mm. Bond Breaker. In instances where the joint configuration will not permit a backer rod it is recommended that the use of an alternative bond breaker be used. Cut spout or tip to desired bead size. In addition, many backup materials also serve as bond breakers. They can be flexible sealants in the form of liquid, spray, rods, or tapes. The ratio of joint width of sealant to depth should be 2:1. Typical expansion joint Thioflex 600 Pouring Grade Bond Breaker Tape Recess Hydrocorr Typical construction joint Thioflex 600 Pouring Grade Bond Breaker Tape. SECTION 07920 – JOINT SEALANTS PART 1 GENERAL 1. 3 Hot rolled acc. Consult mm) and width is 1/4 in. stress at the sealant bond line, they are more susceptible to chemical damage, while high modulus sealants (Class 1225) -. Use bond breaker tape over the backer material. To facilitate free movement, it can be achieved by adding bond breaker tape in between the joint sealant and joint. An approximate rule of thumb for joints in pre-cast concrete joint height (in metres) up to 2. When a bond breaker is needed at a construction joint, a curing compound, form release agent and the like can act as a bond breaker. 08 APPLICABLE PUBLICATIONS: A. in deep joints, the sealant depth must be1/2 inch (13 mm). Rp435. Dimension C must be at least 6 mm (1/4”). Compatible with Davco K10. It seems insignificant, but some sort of bond breaker — backer rod or grip strip or clear packing tape — is the difference between a long-lasting, durable caulking and chinking job and redoing the work year after year. USE TYPE 2A SEALANT FOR JOINTS AND CRACKS 3/16" OR LESS IN WIDTH (LIMITED COLOR CHOICE). The bond breaker tape stops the sealant from adhering to the surfaces and prevents three-sided adhesion. Compare. Add to Cart. Compressible Joint Sealant : Install compressible sealant in joint to depth recommended by manufacturer. Note: Not recommended for fire applications. Hybrid MS Polyurethane Sealant. The mortar in a rigid control joint must be raked out to the proper depth while it is still plastic. Acting as the required system "bond breaker", the B50 Joint Band will accommodate movement in longitudinal, lateral and transverse directions enabling high elongation, rupture resistance and up to 100% elastic. It’s important to match the sealant contact depth to the type of joints. PRIMINGbond breaker tape sealantaudi r8 coil pack sr20detaudi r8 coil pack sr20detA bond breaker tape is an essential component in cases where the sealant can adhere to its base surface. High elasticity – cures to a durable, flexible consistency with exceptional cut and tear-resistance. Types of bond breakers. When the joints are not deep enough to accept a backer rod, a polyethylene bond breaker tape should be installed. PART 3 - EXECUTION 3. Pre-Installation Conference—Many specifications re-quire that a pre-installation conference be held among the parties involved in the joint sealant construction, includinggetter. Ableflex Expansion Jointing is made from Polythylene Foam and is utilised as an expansion joint or space filler stip as they are also known. cord must be inserted into the joint to a depth that will accommodate the depth of sealant specified i. Place bond breaker tape in the bottom of the saw cut joint after it is cleaned and dried. That bond breaker creates the ideal joint design to keep your caulking and chinking stretching properly over time. 5-8. Yield proper bond breaker between the backup material and sealant. When the joints have been filled with fibre filled board, this must be raked back to the required depth. In this case, the use of SNAP-CAP, KOOL-ROD, or a bond-breaker tape is not necessary. When you’re in need, we’re here to help! Features. The number of joints and the joint width should be designed for a maximum of ± 35% joint movement from the initial joint width. 3. Add to Cart. (Vetoflex PBR). Soft backer rod should be approximately 25% larger in diameter than the joint width. JOINT DESIGN QUIKRETE Polyurethane Sealants A thin bead of sealant will accommodate more movement than a thick bead. 2 mm) thick, and has high adhesion to steel or other structural metals. Elastoproof B50 / B10 - Bond Breaker Joint Band. 421. Add to Cart. Widths from 1" (25 mm) to 12" (300 mm) and custom shapes are available in a wide variety of colors and textures. In this con-Compact sealant into joint with a wet wooden spatula and smooth off to the desired finish. bridge joint in a variety of applications , including restoration of failed sealant joints. • Mould and mildew resistant. Allow the primer to dry as per the specification. 5 Replacing Existing Sealants 7 4. Bond Breaker Strips. Sika® Foam Backer Rod Closed Cell is manufactured from closed cell, low density, polyethylene foam. First, backer rod acts as a bond breaker, meaning it allows the sealant to adhere to the walls of the joint and not the bottom. The cured. Proper design is 2:1 width to depth ratio. Priming is typically not necessary. A high-performance Bond Breaker Joint Sealant to provide extra protection and flexibility in vital joints for all waterproofing applications. 4 Neoprene SECTION 07 92 00 Page 1. Joint Width E. For most effective results, dura. Tool as required, although minimum tooling is necessary. Sealants. For contraction joints a bond breaker tape or back-up strip must be used. Most substrates only require priming if testing indicates a need or where sealant will be subjected to water immersion after cure. Davco K5 Bond Breaker is a neutral cure silicone designed to be used as a bond breaker in the installation of Class II & III waterproofing membranes. Silicone sealants are able to bond to most surfaces, particularly porous substrates such as concrete and masonry. When cured it forms a tough, flexible seal and bond, capable of cyclic expansion and compression movement. 1-11 Legend A. Here, we’re going to. The cured sealant. With a. Longer drying times are necessary in these areas. 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 well as butyls, polyurethane, silicones, tri-polymers, polysulfide. A roughened surface will also enhance bond. Apply the sealant so that it is- All bond breaker joint sealant profiles must be a minimum 6mm in depth at the mid-point of the joint. Add to cart. A high-performance Bond Breaker Joint Sealant to. It is important to place the sealant in its designed location for the system to function. Install bond breaker tape or backer rod to prevent bond at base of joint. There are two major purposes of sealants in joints: (1) the sealant fills space, creating a seal, and must maintain that seal throughout the useful life of the structure. This clear, tough plastic tape with a clear polyethylene adhesive backing is eight mils (. Application: All joints should be masked to ensure a neat appearance and prevent sealant applied outside the joint confines from imparting a discoloration to the substrate. WPA MS is a single component, moisture cured silane modified hybrid sealant free of solvents and isocyanates, with a very low VOC content. This article discusses the features of mastic sealants in the construction industry. 1 Blocking Media/Backup Materials 2. 4 MAINTENANCE OF SEALING JOINTS Sealing joints fulfill an important role when it comes to protecting the bond line from environmental influences or simply prevention of moisture or water ingress. ASTM D1056 – Standard Specification for Flexible Cellular Materials Sponge or Expanded Rubber. B. To prevent three-point adhesion use a backer rod or bond breaker tape to ensure proper joint movement and a long lastingDOWSIL™ 888 Silicone Joint Sealant and DOWSIL™ 890-SL Silicone Joint Sealant are one-part silicone formulations that can be extruded from -20°F to 120°F. If the sealant bonds in the wrong areas, it may tear or stretch to the point of failure. •A thin bead of sealant (1/4" ± 1/8"Customer Service: 1. JOINT BACKING BOND BREAKER Joint backing should be used to control the recommended joint depth and prevent 3-sided adhesion. joint width to sealant depth should be about 2:1. Increasing the width (W) of the joint and decreasing the depth (D) generally reduces. - Compatible with cold-applied sealants. 1. " The sealant should bond only to the substrates that will be moving. 01 EXAMINATIONSuitable back-up material, duracord, must be used to adjust sealant depth in the joint to comply with the joint geometry cited in the table. An inherent bond breaker – When using sealants, no bond breaker is needed. Backer rods are excellent at controlling the amount of sealant used or the depth of the sealant in a gap. Sealants in a rigid control joint with mortar are installed over a bond breaker tape, while sealants in an open expansion joint are installed over a sponge backer rod. SOF-SEAL® or any hot-applied sealant, such as HI-SPEC®, can be used to protect the joint. It is important for the sealant to bond to joints in. - An extra 900-micron (0. use polyethylene bond breaker tape to prevent three-sided adhesion. General purpose polyutherane exterior grade joint sealant. 94. - Bostik Dampfix Platinum waterproofing membrane can be applied as soon as the bond breaker joint can be over coated without deformation of the coved sealant profile. Sikaflex 2C EZ. They are also used over movement joints. Thick. 3 D (D=Conc. Reinforcing Fabric maximises membrane strength in vulnerable areas such as corners and construction joints and doesn't compromise the flexibility of the waterproofing system. 1 SEALANTS 2. 6. Bond The sealant should bond only to the substrates that will be moving. Maximum sealant depth is 12mm and width is 38mm. Mechanical methods, such as wire brushes, grinders, etc. Apply joint sealants in uniform, continuous ribbons without gaps or air pockets, with complete "wetting" of joint bondstructure. Closed cell backer rod should be 25 % larger than. For use in hori-zontal joints in traffic areas, the absolute minimum depth of the sealant is 1/2” and closed cell backer rod is recommended. Posted By : / hollywood beach marriott beach chairs /; Under :nars air matte blush torchnars air matte blush torchCorrect joint depth can be established by inserting polyethylene based Sika® Backer Materia,glass rod,etcl tightly into the joint. Sikaflex® Concrete Fix is a moisture-cured, one-part, non-sag and elastomeric polyurethane sealant. (6. e. FIBRE. Bond breaker tape or backer rod must be used in bottom of joint to prevent bond. Publications listed below form a part of this specification to extent referenced. The round profile assists in providing the correct joint sealant profile allowing optimum movement. Bond Breaking. Apply the right amount of sealant. Elastic reinforcement essential for the critical movements areas. B. Depth = ½ Width. A rigid joint filler or sealant backing in joints that will experience movement. com. 3 BOND BREAKERS 2. SYSTEM DESCRIPTION . Aquaband is an innovative detailing system designed for waterproofing and sealing all types of joints, junctions and general areas subject to movement. In joints where polystyrene or bitumen impregnated fillers have been used, Abelflex is ideal as a bond-breaker. 2 mm) thick, and has high adhesion to steel or other structural metals. 2. substances such as over bond breakers or incorporating other reinforcement. Recommended Backing MaterialsThe bond breaker tape shall be approximately 1/8 inch wider than the nominal width of the joint and shall not bond to the joint sealant. Acting as the required system "bond breaker", the B10 Joint Band will accommodate movement in longitudinal, lateral and transverse directions enabling high elongation, rupture resistance and up to 100% elastic. JOINT PROTECTION. Use a sealant backing or. Joints subjected to hydrostatic pressure must have a solid formed base to provide sealant support. with insufficient space in the joints to accommodate backer rod in addition to proper sealant thickness and proper sealant recess. Acts as the bond breaker for the waterproofing system eliminating need for other sealants/tapes. Hotwire 1200W 8m² Heating Mat (0) $1008. Ensure that the air temperature during placement is at least 40 ºF (4 ºC). 4. With a bond breaker tape in between the joint sealant and joint filler, free movement can be achieved. This clear, tough plastic tape with a clear polyethylene adhesive backing is eight mils (. DESCRIPTION Crommelin® Reinforcing Fabric with Bond Breaker is a 100mm wide self-adhesive non-woven polyester fabric. Lightweight – Nomaflex weighs 75%. Gripset Betta 4kg Water Plug (0) $57. The backer rod most importantly acts as a bond breaker, preventing what is commonly referred to as three sided adhesion. Install bond breaker tape between sealants and joint-fillers, compression seals or back of joints where adhesion of sealant to surfaces at back of joints would result in sealant failure. Joint Width Inches (mm) Joint Depth. Avoid brushing on the bond breaker tape. In all joints a bond breaker must be used to prevent sealant contact with the back of the joint, and hence allow optimum performance. There is no reason why the membrane can’t stick to the bond breaker, provided the bond breaker material is capable of accommodating movement. 94. •A thin bead of sealant (1/4" ± 1/8" Documents. No bond breaker material; therefore the joint will not. Visit your local store for the widest range of products. 73. If joint depth does not allow for backer rod installation, use polyethylene bond breaker tape. joint sealing or in flooring applications such as saw cuts jointing. Jakarta Barat Mulia Jaya Packing. Pour sealant into joint slot in one direction and allow sealant to flow and level out as necessary. Publications listed below form a part of this specification to extent referenced. Davco K5 Bond Breaker is a neutral cure silicone designed to be used as a bond breaker in the installation of Class II & III waterproofing membranes. 15 (After two weeks @ 190°F)Expanded PTFE joint sealant - Super Seal PTFE 3mm x 10mm x 15 m. The ratio of joint width toVetoflex PU780 is one part, moisture curing, low modulus elastomeric joint sealant based on polyurethane. 1/4” deep (6mm X 6mm). JOINT SEALANTS . Filler: A sealant backing used behind a back-up rod. For joints greater than 1 inch (25. The backer rod acts as a bond breaker, preventing what is commonly referred to as three. If this product will be used. 03 APPLICATION A. Three face adhesion can be prevented by using bond breakers. 94. Follow the manufacturer’s instructions. 4. - An extra 900-micron (0. Emer-Proof Joint Seal Tape performs as the waterproofing system bond breaker, avoiding the use of sealant beads and backing rod bond breaker methods. Tel: +61 3 9279 9333. bead of sealant to seal perimeter of partition. 2. Features & Benefits . For construction or contraction joints a bond breaker tape or back-up strip should be used. Install tap flanges. Backer rod Sealant. Note: do NOT use masking tape, electrical insulation tape or ‘Gafa’ tape as a bond breaker tape. Bond breaker tape approved by the sealant manufacturer may be used in lieu of bond breaker rod when sealing random cracks. The sealant joint shall fully embed the bond breaker tape, extending 1/4” (6 mm) to 3/8” (10 mm) beyond the endThis type of tape is made of polyolefin, or Teflon, and. Always use bond breaker tape or closed cell backer rod for support on horizontal joints. The sealant does not adhere to it, and no separate bond breaker is required. , 11 Saw Cut Or Formed Joint Compression Seal 16" Preformed Elastomeric 9 Not Required For Construction Joints. Customer Service: 1. Sealing joints must be accessible and repairable. 3. This is when the sealant is adhered to the bottom and both sides of the joint. In joints too shallow to take a backer rod, use a bond breaker tape to prevent three-sided adhesion. For construction or contraction joints a bond breaker tape or back-up strip should be used. in optimal conditions, the depth of the sealant should be ½ the width of the joint. Poor Joint Design . Find out more. In all joints a bond breaker must be used to prevent sealant contact with the back of the joint, and hence allow optimum performance. Natural bond breaker; Bitumen-free and rot-proof; POLYBOARD. Joint Design: Proper joint design for moving joints is 2:1 width to depth ratio (typical), with a recommended 1/4 inch (6 mm) minimum and 1/2 inch (13 mm) maximum depth of sealant. Where hydrostatic pressure exists, only bond breaking tapes must be used, not foamed back-up. To ensure free movement in the joint, bond breaker tape is placed between the joint sealant and joint filler. Innovative detailing system designed for waterproofing and sealing all types of joints, junctions, and general areas subject to movement. Prior to sealing, the top strip can then be pulled easily from the joint to provide an uncontaminated sealing slot ready for preparation and sealing. Cork or rigid non-ASTM C1193 – Standard Guide for Use of Joint Sealants. The. Tape shall be removed immediately after the tooling. Step 4: Membrane application. JOINT SEALANTS SECTION 07 92 00 JOINT SEALANTS PART 1 - GENERAL 1. Expansion/Contraction: 50% (±25%) as per ASTM C719. Home DIY; Trade; Waterproofing. It is important for the sealant to bond to joints in. The bond breaker shall serve to ensure that the bottom of the sealant is bond free, thereby allowing the sealant to adhere only to the sides of the joint. Depth = ½ Width. 1. contraction joints a bond breaker tape or back-up strip should be used. Sika Sikaflex 1A Polyurethane Elastomeric Joint Sealant And Adhesive - 20 Ounce Sausage. Industry standard is 5-year warranty for urethanes and horizontal silicones; 20 years for vertical silicones. 5.