for all other joints. Provide bond breaker (tape or rod). Bond Breaker: When required, pressure-sensitive polyethylene tape, teflon tape, or other plastic tape as recommended by the sealant manufacturer for the location, to prevent bond of sealant in heel of joint. Recommended for all sealant applications with the exception of applications requiring rapid curing from backside. If depth exceeds 1/2", use backer rod. This ensures the correct and uniform sealant depth along the whole length of the joint. org Bi-cellular sealant backing: composed of both open and closed cell polyethylene or polyolefin foam with a surface skin. in deep joints, the sealant depth must be controlled by closed cell backer rod or soft backer rod. 3 mm). Three-sided adhesion can be eliminated by the addition of a bond breaker tape or backer rod. 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. Where hydrostatic pressures are present, compression should be to approximately 40% of its original size. Bond Breaker Tape stops joint sealants from adhering to surfaces and preventing “3-sided adhesion” which limits the ability of the sealant to accommodate movement. Aquaband Bond Breaker. Product Downloads. Read More. Ableflex Expansion Jointing is made from Polythylene Foam and is utilised as an expansion joint or space filler stip as they are also known. 4 Neoprene SECTION 07 92 00 Page 1. 6. Therefore, sealing joints must be considered maintenance parts which require a periodical inspection. Joint dimension of 4X anticipated movement allows proper function of high performance sealants even if applied at temperature extremes. 1. To facilitate free movement, it can be achieved by adding bond breaker tape in between the joint sealant and joint. - Low moisture absorption. Jakarta Barat Karya inti jaya. There are many different types of backer . 5m / 6. Polyethylene tape is commonly used as bond breaker tape. 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. As a bond breaker/joint profile former to support elastomeric sealants in expansion joints between all common building materials Roads, bridges, roof joints Expandafoam Closed Cell is used as a backing strip for non traffic-bearing expansion joints. In joints up to 0. When cured it forms a tough, flexible seal and bond, capable of cyclic expansion and compression movement. Closed cell backer rod should be about 1⁄ 8" (3 mm) larger in diameter than the width of the joint to allow for compression. Without bond breakers, the joint sealer tears apart from. The use of a bond breaker is not required in expansion joints containing Fosroc Hydrocell or Expancell cellular polyethylene expansion joint fillers. 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. 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. 68 (150) Surface and ambient temperature minimum 40-100 maximum 14 days ChemMasters Aquanil Plus 100 (P)(1) Clean, free from dirt, dust, laitance, oil, grease, paints, curing or sealing compounds, tilt up bond breakers or other contaminants 1 Application: 9. the sealant during joint tooling, inherently directing the tooling force laterally to the sides of the joint to cause the sealant to wet the substrates, which promotes an adhesive bond. Essential to any sealant application is a backer rod or bond breaker tape. Prior to any full-scale application of a subsequent paint, coating, sealer, adhesives sealant, grout, etc. Back-up Rod: A type of sealant backing. This is when the sealant improperly adhereds to the bottom and sides of the joint, restricting movement. 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. Innovative detailing system designed for waterproofing and sealing all types of joints, junctions and general areas subject to movement. Because many backup materials act as bond breakers, a separate bond breaker material is not always required. Sika® Foam Backer Rod Closed Cell has excellent cpmression and recovery properties, is available and various sizes and lengths. 1. polyethylene bond breaker tape to prevent three-sided adhesion. No bond breaker material; therefore the joint will not. 1. Where hydrostatic pressure exists, only bond breaking tapes must be used, not foamed back-upNeutral cure silicone used as a bond breaker. C. Bostik’s recommended sealants • Bond breaker is to be installed over the coat where a bond breaker joint is required, e. D. A further 2 full coats, at 900of the sealant to maintain minimum or maximum depth of sealant. 1 Porous substrates 8 4. It is important for the sealant to bond to joints in. 421. Joint Depth The joint must be deep enough to allow proper placement of the sealant and a bond breaker/backer rod. E. Bastion 100mm x. The maximum depth is ½” (13 mm) and the minimum is ¼ inch. Sika Sikaflex 1A Polyurethane Elastomeric Joint Sealant And Adhesive - 20 Ounce Sausage. 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’*. characteristic values of the joint sealant and the adjacent building materials, the exposure of the building elements, their construction and size. If ambientAsphalt Sealant. Leave no voids. Sealant backer material is available in three types: Type I, Type II, and Type III, and serves one or more of the following purposes: (1) limits the amount and depth of sealant applied to a joint, (2) acts as a barrier interface to prevent backside adhesion (bondbreaker), and (3) provides a form to assist the sealant in developing a shape factor. provides a non-stick surface to prevent sealant 3-sided adhesion. • Apply a 150mm wide x 1mm WFT strip of Vulkem NEM un-reinforced. 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. 3 BOND BREAKERS 2. WPA MS is a single component, moisture cured silane modified hybrid sealant free of solvents and isocyanates, with a very low VOC content. formed joints a polyethylene bond breaker tape must be used to prevent sealant from adhering to the back face of the joint. For use on horizontal substrates. joint sealant and no bond or reaction shall occur between the rod and the sealant. joints from 6 mm to 12 mm wide, width and depth must be equal. Silicone sealants are used to seal joints in a wide variety of construction applications. 94. Contact CRL Customer Service. Used in joint sealing applications, Bond Breaker Tape stops. 7 TRAFFIC CONTROL PART 2 PRODUCTS 2. Sealant Backing C. See table below. And fourth, it simplifies tooling. 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. 3 Synthetic Rubber 2. The depth of the sealant should be 1/2 the width of the joint. Control the depth of the sealant by using a Backer Rod that is 25% larger than the joint opening at its median temperature. Compatible with Davco K10 Plus, Davco K10 Rapid and Davco Dampfast. typically up to 25% larger) than the actual width of the joint to provide a friction fitfrom the driving surface and should show necessary joint fill-ers, sealant backing, bond breakers, and bonding surfaces. Soft backer rod should be approximately 25% larger in diameter than the joint width. 1-11 Legend A. 1 + 2+ 1 4 16 11 3 d = w = Unless Specified Otherwise In The Plans4 1 8 4 1 8 Joint Sealant Material To Be As Specified In The Plans 3 d = w = Unless Specified Otherwise In The Plans4 1 8 4 Joint Sealant Material To Be5. SYSTEM DESCRIPTION . Most substrates only require priming if testing indicates a need. Innovative detailing system designed for waterproofing and sealing all types of joints, junctions and general areas subject to movement. SKU: EUCO7002G. 03 APPLICATION A. A bond breaker must be installed at areas subject to movement, wall/wall junction, wall/floor junction, sheet joints and seams, penetrations and. )SECTION 07 9200 - JOINT SEALANTS. Add to Cart. Available in a 300ml cartridge and as a 600ml sausage. act as bond breakers, which allow the silicone sealant to move freely with the joint. The sealant must be a minimum 6mm in depth at the mid-point of the bond breaker joint and extend a minimum 6mm on either side of the joint or gap. Compatible with Davco K10. g. 3. Correct joint depth can be established by inserting closed cell polyethylene backing rod tightly into the joint. Excellent adhesion; Flexible joint sealant; Single compone; Footer Menu. JOINT DESIGN QUIKRETE Polyurethane Sealants A thin bead of sealant will accommodate more movement than a thick bead. 3 D (D=Conc. Approved bondbreaker system conforming to AS 3740; Time saving simplified installation • Eliminates need for sealant bondbreakers and tapes Crommelin Bond Breaker Bandage 100mm x 50M Bond-breaker tape made of non-woven polyester fabric called Crommelin Polyfab BB is self-adhesive and intended to be installed over joints, fissures, or other places where structural movement is anticipated. Elastic reinforcement essential for the critical movements areas. To prevent the sealant adhering to the base surface or filler board, apply Bond Breaker Tape along the whole width / length of base of the joint. 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. For sealing shallow joints Bond Breaker Tape is applied to the bottom of the joint so the sealant will bond only to the walls. - Substrate gaps at drainage outlets, flashings,. b. 94. 2. Provide backup material that is a compressible, non-shrinking, non-staining, non-absorbing material, nonreactive with the joint sealant. Bond Breakers or masking tape Bond breakers prevent three-sided adhesion of the sealant (i. Priming is not usually necessary. Add to Cart. PAGE 2. , 11 Saw Cut Or Formed Joint Compression Seal 16" Preformed Elastomeric 9 Not Required For Construction Joints. B. Tool as required, although minimum tooling is necessary. • Mould and mildew resistant. In shallow joints self-adhesive polyethylene tape can be used. Use a Sika PEF backing rod to form the joint base. Tel: +61 3 9279 9333. 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). Priming Priming is not usually necessary. WPA MS is a single component, moisture cured silane modified hybrid sealant free of solvents and isocyanates, with a very low VOC content. Not Recommended for Backing Material. Elastic reinforcement essential for the critical movement areas. Typical expansion joint Thioflex 600 Pouring Grade Bond Breaker Tape Recess Hydrocorr Typical construction joint Thioflex 600 Pouring Grade Bond Breaker Tape. Priming Fosroc Primer MS2 is required for joints that are to beNeutral cure silicone used as a bond breaker. It is an elastic and flexible material used to create a durable bond between two different surfaces or to protect a particular surface. In deeper joints, a polyethylene backer rod must be used to act as the bond breaker, and at the same time set the joint depth and support the sealant. 55. 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. D. A bond breaker is therefore employed to minimise the stresses by providing bond relief and ensuring proper functionality of the membrane. bond breaker joint can be over coated . Bandage seal (Bandage joint) The application of sealant across a joint which is not designed to accommodate a sealant (see fig. Laurence Co. 6144. Use a size that will compress at least 25% when inserted into the joint. Apply moderate pressure to break seal inside the nozzle. Use joints greater then the minimum of 1/4 inch (6 mm width), since wider joints can accommodate more movement than narrow joints and can also result in a greater joint spacing. In joints too shallow to take a backer rod, use a bond breaker tape to prevent three-sided adhesion. Apply a fillet to all wall and floor junctions, and if a timber or cement based sheet has been used apply a sealant to the joint between the sheeting. duracord is a self-releasing material, but if soft-board or cork is used as the joint filler, a plastic strip bond-breaker must be placed on the filler surface before sealant is applied. Effective Date . 01 EXAMINATIONJoint dimension should allow for 1/4” minimum and 1/2” maximum thickness for sealant. 3 Low Modulus Silicone Sealant: 932. It cures under the influence of atmospheric moisture to form an elastomeric material with adhesive properties, in some cases without the need for priming of the substrate. The maximum depth is ½” (13 mm) and the minimum is ¼ inch (6mm). Cork or rigid non-ASTM C1193 – Standard Guide for Use of Joint Sealants. 4. 6 m ~ 1. the sealant joint depth (measured at the center) should always fall between the maximum depth of ½" and the minimum depth of ¼". 10 WARRANTY SPEC WRITER NOTES: 1. Two sided adhesion allows sealant to stretch with joint movement. Visit your local store for the widest range of products. • is impacted by sealant joint MOC (including the substrate Adhesion: Sealant joint failures in the biomedical facility environment are frequently due to. 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. 8. The B50 Joint Band is easy to install and provides for considerable time saving efficiencies and durable properties over conventional bond breaking sealants and tapes. Where hydrostatic pressure exists, only If the joint or crack becomes contaminated, damp, or wet, remove the bond breaker if it has been installed. Mastic is a form of sealant or adhesive used to fill the joints or as a bond for different materials and gaps. e. June 15, 2021 . C. Bond breaker tape or backer rod must be used in bottom of joint to prevent bond. 5” use a 2:1 width to depth ratio to accommodate movement. Where joint design or depth of joint will not permit the use of backing rod, use a bond breaker tape. Consisting of a unique grade of rubber, the Bond Breaker Waterproofing Joint. Remove all dirt, laitance, loose material, mould release and curing agents, and foreign matter. 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. Cut spout or tip to desired bead size. Priming is typically not necessary. An inherent bond breaker – When using sealants, no bond breaker is needed. Joint Sealant 300ml Cartridge| Exterior polyurethane joint sealant, general purpose by. 2 mm) thick, and has high adhesion to steel or other structural metals. Joint dimension of 4X anticipated movement allows proper function of high performance sealants even if applied at temperature extremes. Thick. Bastion 100mm x 10m Bond Breaker Joint Band is a waterproof reinforcing and bond breaking band that is used as wall/floor junctions to protect the most critical areas of the waterproofing application. Expansion/Contraction: 50% (±25%) as per ASTM C719. Back-up Rod: A type of sealant backing. Bond Breakers. Sikaflex® Concrete Fix is a moisture-cured, one-part, non-sag and elastomeric polyurethane sealant. Cork or rigid non-The bond breaker is applied in joints where walls meet floors or two walls meet in a corner. PU sealants are mistakenly used as a bond breaker, where a neutral cure silicone should be installed. 80 (400)ELASTOMERIC JOINT SEALANT / ADHESIVE. This question is taken from book named – A Self Learning Manual – Mastering. Elastic reinforcement at critical movement areas. As the sealant joint width becomes larger than 1", the depth should be held to approximately 3/8". Pavt. Help centre;Crommelin Reinforcing Fabric is a non-woven, rot proof polyester fabric for use in conjunction with Crommelin liquid applied waterproofing membranes. Closed cell backer rod should be 25 % larger than joint width; do not compress more than 40%. 2 mm) thick, and has high adhesion to steel or other structural metals. Click & Collect your purchase in-store or we'll deliver it to you. 3. Stress relaxation to prevent splitting at edges. Install tap flanges. ** Note: The use of a bond breaker is not required in expansion joints containing Expancell or Expandafoam cellular polyethylene joint fillers. C. The cured. Approval of the backer rod or bond breaker tape shall be made by the Engineer. The mortar in a rigid control joint must be raked out to the proper depth while it is still plastic. • Three-sided adhesion limits the amount of movement that a joint can accept before failing. Add to Cart. 3. . Economic option for Joint Sealant in Waterproofing applications. JOINT PROTECTION. Sealant Pouring Fill the sealant in the ready joint by hand or. Use only the correct backer rod size. 2:1 width to. Meets Federal Specification TT-S-00230C, Type II, Class A. However, it is important to note that most backer rods can serve as a bond. The round profile assists in providing the correct joint sealant profile allowing optimum movement. Semi-rigid joint fillers are materials that serve two main purposes. Protect surfaces with masking tape. Compare. 3. Suitable as a back-up filler for most liquid sealants Ideal for stopping contaminants such as soil entering into expansion slots and joints. ) The sealant should have a minimum bond of 1/4 inch on the side of the joint and a depth of 1/8 inch to 3/8 inch at the center. 3 mm). In joints where polystyrene or bitumen impregnated fillers have been used, Abelflex is ideal as a bond-breaker. EXAMINATION. Filler: A sealant backing used behind a back-up rod. 73. 0m To ensure that the correct joint width-to-depth ratio is achieved and to prevent the sealant from adhering to the bottom of the joint, it is highly recommended to use a tight- Sikaflex-PRO Sikaflex-PRO is a one component, thixotropic, polyurethane based joint sealant. substances such as over bond breakers or incorporating other reinforcement. The number of joints and the joint width should be designed for a maximum of ± 35% joint movement from the initial joint width. 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. Closed cell backer rod or bond breaker tape must be installed at the bottom or base of a dynamically working joint prior to sealant installation to prevent three sided adhesion. The round profile assists in providing the correct joint sealant profile allowing optimum movement. The maximum depth is 1/2 inch (13 mm) and the minimum is 3/8 inch (10 mm). Mechanical methods, such as wire brushes, grinders, etc. Dunlop 1L Multipurpose Water Based Primer (0) $25. Usage. Vetoflex PU780 is one part, moisture curing, low modulus elastomeric joint sealant based on polyurethane. Backer rods are excellent at controlling the amount of sealant used or the depth of the sealant in a gap. Uses: BestBond Joint Sealant permanently fills and seals cracks in concrete, stone, masonry, and most rigid surfaces. 15 (After two weeks @ 190°F)Expanded PTFE joint sealant - Super Seal PTFE 3mm x 10mm x 15 m. Tough, elastic, rubber-like seal. contraction to maximize accommodation of movement. See full list on ncma. Longer drying times are necessary in these areas. The use of a bond breaker prevents undesirable three-sided adhesion. 3. 5-8. Always use bond breaker tape or closed cell backer rod for support on horizontal joints. $9. Compare. Find out more. Follow these guidelines when placing the sealant: a. 4. - Substrate gaps at drainage outlets, flashings,. Master Wall® System Latex Sealant as Bondthe joint shall be mechanically cleaned by water or sand blasting. • Three-sided adhesion limits the amount of movement that a joint can accept before failing. - An extra 900-micron (0. Tool as required to properly fill joints and force sealant against joint interfaces, maximizing bond. Widths from 1" (25 mm) to 12" (300 mm) and custom shapes are available in a wide variety of colors and textures. Wrapped Mesh Embedded in Base Coat. • Sanitary grade for interior and exterior use. is a cus tom extrusion or mold made of higher durometer silicone rubber used in custom applications. 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. Easy Seal Bond Breaker is a waterproof sealing band that is used at. C. It is important for the sealant to bond to joints in. 000. If joint depth does not allow for backer rod installation, use polyethylene bond breaker tape. In acoustical applications, apply 1/4" (6 mm) minimum. Customer Service: 1. 94. 5 DELIVERY, STORAGE, AND HANDLING 1. Ableflex will assist with reducing environmental elements such as sand and soil penetrating the expansion slot or joint. Consult mm) and width is 1/4 in. Bastion 100mm x 50m Waterproof Reinforcing Fabric (0) $19. They are also used over movement joints. Customer Service: 1. • Excessive sealant depth will result in. Priming is typically not necessary. Allow the primer to dry as per the specification. It is suitable for movement and connection joints for indoor and outdoor applications. ASTM D1056 – Standard Specification for Flexible Cellular Materials Sponge or Expanded Rubber. Apply sealant using consistent, positive pressure to force sealant into the joint. bridge joint in a variety of applications , including restoration of failed sealant joints. Customer Service. The cured. Closed cell backer rod should be 25 % larger than joint width; do not compress more than 40 %. Bond Breaker for extra protection. When cured it forms a tough, flexible seal and bond, capable of cyclic expansion and compression movement. Rod Closed Cell provides bond breaking, assists in the control of joint depths for correct joint design and re-ducing sealant consumption. Most substrates only require priming if testing indicates a need. Add to Cart. Closed cell backer rod should be 25 % larger than. Bond breakers are not required as elastomeric sealants will not bond to dura. "Min. Sikaflex® MS bonds well to: Concrete and masonry Cement plaster systems Aluminium, copper, brass and zinc Stainless, mild or galvanised steel Glass and ceramic tiles 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 experience movement; Using braided sealant backing to compensate for a joint opening that is too large for it Buy products online from our wide range. Flexible Joint Sealant. Bond breaker tapes are obtainable in the mentioned width:15 mm,. To facilitate free movement, it can be achieved by adding bond breaker tape in between the joint sealant and joint filler. It is applied to the casting slab to function as a bond breaker between the casting slab and the tilt-up or lift-slab panel. Bastion 100mm x 10m Bond Breaker Waterproofing Joint Band (1) $25. 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. Pavt. 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. Joint walls must be sound, clean, dry, frost-free, and free of oil and grease and any other contaminants. 94. In this case, the use of SNAP-CAP, KOOL-ROD, or a bond-breaker tape is not necessary. Bond breaker tape is black polypropylene tape that provides an option to break the bond of the sealant between the joints between the surfaces of the concrete. JOINT SEALANTS SECTION 07 92 00 JOINT SEALANTS PART 1 - GENERAL 1. Apply sealant into joint slot in one direction and allow sealant to flow and level out as ne-cessary. ® cord. Waterproof – Nomaflex will not absorb water and will remain in place for years. 94. Latex sealant used with silicone sealant to provide bond breaker for use where minimal depth is available. 1 The primer used should be as named on the 4. Pavt. Bond Breakers. 03 APPLICATION A. For green concrete applications control joints must be cut 8 hours prior to sealant. Bond Breaker Tape is used in joint sealing applications to ensure sealant only adheres to two faces of the joint. Finish Coat F. 5 Priming 4. 7. Euco 700 Sealant Calculator. Bond Breaker Polyethelene Tape Black Roll used in shallow building joints to prevent 3 sided adhesion. Back-up Rod: A type of sealant backing. Eliminates the need for bond breaker sealants. Bond breakers prevent three-sided adhesion of the sealant (i. 800. This base surface can be an isolation or expansion joint filler material, concrete, backer rod, or any other base that can lead to a three-plane adhesion condition. , Inc. Where the joint configuration will not permit a backer rod, CHEM LINK recommends that an alternative bond breaker be used. When sealing joints and gaps, avoid three-sided adhesion by using bond breaker tape and/or backer rod. Email Us. specified. Tape Bond Breaker 1 84 1 8 to D (D=Conc. Also available in grey and white. In joints up to 0. Protect surfaces with masking tape. A further 2 full coats, at 900bond free, thereby allowing the sealant to adhere only to the sides of the joint. Compressible Joint Sealant : Install compressible sealant in joint to depth recommended by manufacturer. Warranty. Closed cell backer rod diameter should be larger (i. General purpose polyutherane exterior grade joint sealant. 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. A joint sealant can fail over time due to: any of the options are correct. Proper design is 2:1 width to depth ratio. 2. 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 recovery 💪 Clean joint surface, free from dust and other contaminants. prevent bond. SECTION 07920 – JOINT SEALANTS PART 1 GENERAL 1. The rainscreen principle attempts to: prevent wind-driven water from breaching a curtain wall by equalizing the air pressure on both sides of the wall. Minimum depthA. Anti Fungal. Do not use bond breaker that will stain or adhere to the sealant. sticking to the bottom of the joint and then tearing when the joint opens. Find Bastion 300ml Bond Breaker Joint Sealant at Bunnings. Polyethylene tape is commonly used as bond breaker tape. Install bond breaker tape or backer rod to prevent bond at base of joint. after the sealant is cured, as it is extremely difficult to apply such materials onto the surface without contaminating the joints. Compare. Minimum depth is 6 mm and width is 6 mm. For most effective results, dura. - 1 - Types of bond breakers Bond breakers can be flexible sealants like silicone or polyurethane, bond breaker tapes, fabric mesh or foam rods. construction or contraction joints polyethylene bond breaker tape or back-up strip must be used. Use CRL Bond Breaker Tape to create proper two-way sealant bonds. Economical Easy to install Readily compressible Rot proof and non-absorbent Provides bond breaker and minimum strain shape for joint sealants Provides a firm backing for sealant tooling Advantages The use of Expancell will also act as a bond breaker at the base of the joint thus preventing three sided adhesion and the accompanying additional. Proper design is 2:1 width to depth ratio for movement joints. Compressible Joint Sealant : Install compressible sealant in joint to depth recommended by manufacturer. joint movement can be accommodated in a thin bead of sealant than in a thick bead. 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. The back rod and breaker tape shall be installed in the saw-cut joint to prevent the joint sealant from. 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. MasterSeal NP 2 sealant.