Epoxy Flooring repair works at HLL Biotech Limited, Chengalpattu, Tamil Nadu.

Removing and Preparation of the existing Epoxy surface of floor by dry grinding followed by cleaning with wire brushing etc., to remove all dirt, dust, oil etc. to expose clean substrate, as per manufacturer's specification and direction of Engineer In Charge and disposal of resulting debris from the site complete as per the direction of engineer in charge.

Rectification of delaminated and cracked floor areas by mechanical cutting and removal of debonded epoxy. Surfaces shall be cleaned of all debris clean with wire brush and treated with a solvent-free, two-part epoxy-polyamide primer (1:1 mix) at 150–200 microns. The repair shall be completed by laying a high-strength epoxy screed to match the existing floor elevation, ensuring a seamless and monolithic finish.

Applying epoxy primer 0.2mm for 1mm epoxy flooring system by a solvent-free, two component epoxy-polyamide based, medium viscosity primer-cum-screed,which can seal the normal porosities of the concrete. Mix Resin and Hardener in equal proportions. Solvent or thinners should not be added. A forced action mixer with a paddle fitted into a heavy duty, slow speed electric hand drill is recommended for mixing. The material is poured onto the prepared substrate and spread to the required thickness with a painting roller/ stiff brush.

Applying epoxypolyurethane 1mm self levelling floor topping for 1mm thick epoxy flooring by a four component, self-smoothing floor topping,based on epoxy resin fused with urethane linkages over entire area including side covings within 5cm radius. The EPU system is ready to mix and use, which provides a hard wearing, chemical resistant, flexible, impervious and easy to clean seamless flooring. Solvent or thinners should not be added. A forced ac on mixer with a paddle fitted into a heavy duty, slow speed electric hand drill is recommended for mixing. The material is poured onto the primed substrate and spread to the required thickness with a notched trowel. Deaerate the layer by a spike roller and allow to cure for 24 hours.

Preparation of the existing concrete surface of floor by dry grinding with diamond wheel grinder followed by cleaning with wire brushing etc., to remove all dirt, dust, oil etc. to expose clean sound base concrete substrate, The exis ng surface laitance shall be removed suitably by mechanical ac on scarification before application to provide proper bonding with the base. To ensure proper anchoring groove to be cut (6mm x 6mm) in grid pattern (3 to 3 mx 3 to 3 m grid) and disposal of resulting debris from the site, complete as per the direction of site engineer in charge.

Providing 4mm PU flooring system after necessary surface preparation including groove filling by applying a scratch coat a coverage rate of up to a nominal 1 mm thickness; actual coverage rate will depend on concrete surface texture and porosity. This scratch coat is designed to seal the floor. Mix and spread evenly by trowel followed by an application of PU top coating of 3mm over entire area including coving in 5cm radius . A forced-action rotary paddle mixer is recommended for mixing the product. Drain the contents of the liquid base and to be mixed well for homogenous mixing, followed by liquid hardener components into a large plastic container and mix briefly. Add slowly the Part C and continue mixing for at least 1 minute, until a lump-free mix is obtained Immediately discharge and spread the mix over the application area, using a notched trowel to achieve the required coverage rate, to build up minimum thickness of 3 mm topcoat. De-aerate using a spiked roller. Spike rolling should be carried out within 10 minutes of application to avoid interfering with flow and surface finish. Do not return to spike roll older applied areas as the product is fast-setting and this action will leave spoiling marks on the applied floor. Polythene should not be used. Protect the installed floor from damp, condensation and water for at least 4 days.