What is the purpose of bond breaker tape?

What is the purpose of bond breaker tape?

way to break the bond of sealant between the cement joints. The tape does not allow the sealant to adhere to the tape backing allowing the sealant joint to only adhere to the two cement sides.

What is bond breaking tape?

Description: Bond Breaker Tape is used in joint sealing applications to ensure sealant only adheres to two faces of the joint. Polyethylene tape for isolating sealant and eliminating adhesion to filler boards.

What is bond breaker made of?

Nox-Crete Silcoseal Select The premium bond breaker on the Australian market today, providing unsurpassed performance in a water-based formulation. Silcoseal Select is suitable for most applications and produces superior concrete finishes with less lifting suction when compared to solvent based alternatives.

When would you use a bond breaker?

A bond breaker is a substance applied to concrete surfaces to guarantee that there is permanent bonding between the surfaces. Bond breakers are normally used on tilt-up walls and precast segments to ensure the right pieces are cast together.

What is concrete expansion joint?

Expansion joints are put in place before the concrete is poured. Expansion joints are used to allow the slab to move and not put stress on whatever it abuts. These joint are placed where a slab meets a building, where a slab meets another slab, and where a pool deck meets the coping.

What is Bond breaker waterproofing?

The principle of a bond-breaker system is to cater for building joint movement without breaching the waterproofing membrane. The Objective: is to maintain the waterproofing membrane system so that it remains an impervious barrier to liquid or water.

What is polyethylene tape?

Polyethylene tape is a type of tape which has a polyethylene backing with a rubber adhesive. This is used for many general purpose applications, including: Sealing. Color coding.

How tight should backer rod fit?

For expansion joints the backer rod should be just large enough to fit snugly into the control joint (which should be 3/8″ for CMU walls). There should be about 1/2″ of depth from the backer rod to the surface of the masonry wall. The backer rod should be snug enough to stay in place during caulking of the joint.

How does bond Breaker work?

A bond breaker literally breaks the bond between the substrate and waterproofing membrane to create an elastic ‘bridge’ that can stretch as buildings flex and move. The bond breaker is applied in joints where walls meet floors or two walls meet in a corner. They are also used over movement joints.

Where do you use a bond breaker?

The second type of sealants are used as bond breaker materials. Bond breakers are required by AS 3740-2010 Waterproofing of Domestic Wet Areas. Bonded membranes are required to have bond breakers installed at all floor/wall, hob/wall, and junctions where movement might be expected.

What kind of tape is used for bond breaker?

Polyethylene tape is commonly used as bond breaker tape. To facilitate free movement, it can be achieved by adding bond breaker tape in between the joint sealant and joint filler. Primers may be applied to the sides of joints to provide a good bond between them.

What does it mean to be a bond breaker?

A bond breaker, as stated in Australian Standard 3740 is a “System that prevents the membrane bonding to the substrate, bedding or lining” But why wouldn’t you want the membrane to bond to the surface?

What is the reason of using bond breaker for joint sealant?

What is the reason of using bond breaker for joint sealant? Joint sealant should be designed and constructed to allow free extension and compression during the opening and closure of joints.

How does a non-membrane bond breaker work?

Non-membrane bond breakers are subdivided into reactive and non-reactive. The reactive bond breaker will react, forming a crude soap. The non-reactive bond breaker will interact with the concrete surface and generate a waterproof surface.