Hychem TL2 Flash Novolac — Flash set Novolac epoxy binder for floor toppings requiring high impact and fat resistance

• Epoxy toppings can exert considerable shear forces on the underlying concrete substrate due to differential thermal movements. It is most important that the concrete surface is adequately prepared. The cement paste layer and any surface coatings already in existence need to be removed. This is best carried out using captive shot blasting, grinding or scarifying.
• The resultant surface should have a minimum tensile strength of 1.5 MPa and a minimum compressive strength of 25 MPa.
• Weaker surfaces need to be upgraded with a sub layer of a HYCHEM GP epoxy mortar.

• In a clean container, mix HYCHEM TL2 Flash liquid components (resin and hardener @ 2:1) using a helical mixer at a speed of 500 rpm until the mix becomes homogenous (1–2 minutes).
• Add HYCHEM SL aggregates at a ratio of 1:1 by volume, gradually to the mix whilst still mixing.
• Move the mixer around from side to side and top to bottom and scrape the sides of the mixing vessel to ensure thorough mixing.

Sub layer

Apply a sub layer of HYCHEM GP Epoxy epoxy mortar to achieve the desired falls to drains if time allows.

Otherwise, blend quartz aggregate and TL2 Flash at a ratio of 3-4:1 by volume and trowel out.

TL2 Flash surface topping

• Apply the resin aggregate mix to the floor using a notched trowel at a coverage rate of 2 litres/sqm.
• Into the wet TL2 Flash, broadcast antislip quartz aggregate generously into the surface until a dry beach finish is obtained without surface humps. Aggregate size should be 16/30 or 18/40.
• Once cured, sweep off and vacuum excess loose aggregate.
• Apply a sealcoat of TL2 Flash in the desired colour at a coverage rate of 2 sm/l.
• Lightly broadcast hard wearing aluminium oxide non-slip aggregate into the wet surface.
• Apply a final coat of HYCHEM SF12 Novolac epoxy coating when the base coat has cured sufficiently to be able to apply the seal coat. Coverage around 4-6 sqm/l.

Antislip rating: The above method will yield an antislip rating of a minimum R11 when tested according to the ramp method.

A rating of R12 to R13 can be gained by broadcasting small amounts of 24–36 grit alumina into the TL2 Flash seal coat.

Joints in the floor need to be reflected in the epoxy topping.

When the topping has cured, the surface needs to be sawcut and an epoxy joint sealant such as HYFLEX NS applied.

Xylene or Solvent BGE can be used for cleaning tools and equipment before the mixed compound begins to harden.

Xylene can be used for cleaning tools and equipment before the mixed compound begins to harden.

Using the correct amount of epoxy is critical to the performance of the final floor. A tendency to often overload the aggregate relative to the resin component can have dire effects on the longevity of the finished topping. A 5 mm floor will require a minimum of 2 litres of TL2 Flash per sq. metre.

1. Primer, 5–8m² per litre depending on the porosity of the substrate.
2. Scratch coat. 0.75 litre per sq metre.
3. Trowelled topping, 2 litres per sqm per 5m of topping depth.

Epoxy pigments are available from HYCHEM to provide a range of colours to flooring finishes. These pigments can be affected by chemical reagents, it is the responsibility of the user to ensure that the pigments used are suitable for the project being considered.

Pigments supplied are meant for industrial use and will not necessarily comply with architectural colour standards.

Available in 12, 30 and 60 litre kits.

Available in 4, 16, 80 and 800 litre kits.

12 months from date of manufacture, stored under shelter at 25 °C in original unopened container.

12 months from date of manufacture, stored under shelter at 25 °C in original unopened container.