Epoxy Glue Mixing Ratios & Working Time Guide

Epoxy Glue Mixing Ratios and Working Time Explained

Getting the mixing ratio and timing right is crucial for achieving a strong, reliable bond with epoxy glue. Here’s how to ensure your repair or project gets the best results possible.

Understanding Epoxy Glue Mixing Ratios

Most two-component epoxy glues are designed to be mixed in a 1:1 ratio by weight or by volume. This means you combine equal parts of resin and hardener for the adhesive to cure correctly. Always check the manufacturer’s instructions, as some specialised products may differ, but a true 1:1 mix is standard for popular products like the FixExpress Two-Component Epoxy Glue. Thorough mixing until the colour is uniform is key to a successful bond.

Working Time and Application Tips

Once you’ve mixed your epoxy, you need to act quickly. The working time—how long the glue remains usable—tends to be short, often around 3 to 5 minutes. This means you should have your surfaces prepared in advance, so you can apply the epoxy immediately after mixing. Fast-setting formulas, such as those found in Klebfix and FixExpress, allow for quick repairs, but leave little room for delays. If you are using a cartridge system, a suitable mixer nozzle ensures even and mess-free blending.

When Precision Matters Most

If the 1:1 ratio is not respected, the epoxy may not harden properly, leading to weak or incomplete bonds.
Short working times are especially important when bonding materials that require quick assembly or for repairs that are time-sensitive.
Mixer nozzles and dosing syringes can help ensure accuracy, especially on smaller or complex jobs.

Related guides

By accurately following the correct mixing ratio and working promptly within the working time, you’ll enjoy lasting and dependable results. To explore more tips and products, see our main guide on how to use epoxy glue.