Everflex JS - Acrylic Tilt Panel Joint Sealant

Everflex JS is a high-performance joint sealant designed to withstand the harsh Australian climate. Its superior elasticity and weather resistance make it ideal for sealing joints in various construction materials, both indoors and outdoors. This non-toxic and paintable sealant offers excellent adhesion without the need for priming, simplifying your projects...
Vendor: Adheseal
Availability: In Stock

Physical Properties

Type of product: Hybrid acrylic
Low temp flexibility (astm c-734): No cracking or adhesion loss
Density (specific gravity): 1.06
Elongation: 1000%
Service temperature: -18°c to 80°c
Movement capability: + or – 50%
Uv accelerated weathering (astm c-732): No cracking or adhesion loss
Voc: 32gm/lt (californian south coast air quality management rule 1168)
Shelf life: Minimum of 12 months when stored between 5°c & 32°c in unopened containers
Clean up: Uncured sealant may be removed with
Colours: Grey

Shipping & Delivery

$15.95 shipping on all orders nationwide for most products

Everflex JS - Acrylic Tilt Panel Joint Sealant

Vendor: Adheseal

Everflex JS - Acrylic Tilt Panel Joint Sealant


Vendor: Adheseal

Everflex JS - Acrylic Tilt Panel Joint Sealant

Colours: Grey
Size: 10L Pail

Adheseal Everflex JS is a high-performance, low modulus elastomeric joint sealant designed for both interior and exterior applications. This hybrid acrylic sealant offers exceptional weather resistance, superior elasticity, and excellent adhesion to most building materials, making it ideal for joints subject to movement. Everflex JS is non-staining, non-toxic, and paintable, providing a professional finish for your projects.

Key Features:

  • Exceptional weather resistance for long-lasting performance.
  • Superior elasticity to accommodate joint movement.
  • Excellent adhesion to most building materials without priming.
  • Low modulus for flexibility and stress relief.
  • Non-staining and non-toxic for safe use.
  • Paintable for a seamless finish.
  • Meets TT-S-00230C Class A and ASTM Spec. 834 standards.

Suitable Substrates:

  • Most common building materials (testing recommended for suspect surfaces).


  • Sealing exterior and interior joints subject to movement.
  • Windows and doors.
  • Precast panels.
  • Tilt-up construction.
  • Blockwork, brickwork, and timber.
  • Metal and various plastics (including acrylic and polycarbonate).


  • Ensures long-lasting, weatherproof seals.
  • Accommodates joint movement without cracking or loss of adhesion.
  • Saves time and money with excellent adhesion and no priming required.
  • Reduces risk of staining and damage to substrates.
  • Provides a safe working environment with non-toxic formula.
  • Achieves a professional finish with paintable sealant.
  • Meets stringent industry standards for quality and performance.

Application Instructions for Everflex JS

Follow these instructions to achieve optimal results when applying Everflex JS:

  1. Ensure that all joints are filled to the required depth with Adhefoam backer rod or bond breaker tape before applying the sealant.
  2. Use a spatula to tool off the sealant immediately after application, ensuring a flat and non-concave finish.
  3. Prepare the joint surfaces by thoroughly cleaning them, removing any dirt, grease, laitance, loose particles, or contaminants.
  4. For most substrates, priming is not necessary. However, it is recommended to conduct adhesion testing for suspect surfaces.
  5. Consider joint design by allowing for approximately ±25% movement of the original joint width. Everflex JS can accommodate movement up to ±50%.
  6. The recommended minimum depth of sealant is 6mm, with a maximum of 10mm, regardless of the joint width.
  7. There is no maximum joint width, but testing is recommended for very wide joints to ensure sagging does not occur.
  8. Avoid placing joints deeper than a 2:1 ratio to prevent excessive sealant consumption.


  • Avoid application in imminent rain (within 90 minutes).
  • Protect backer rod from absorbing water before sealant cures.
  • Test for sagging on very wide joints.

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