Flowdur HF A/S - Anti-Static Polyurethane Screed

Surface Preparation:

Inadequate preparation will lead to loss of adhesion and failure. Grinding, light vacuum-contained shot-blasting or planing is recommended.

Percussive scabbling or acid etching are not recommended. Anchorage grooves should be cut to a width and depth of twice the thickness of the floor finish at the edges, bay joints, up-stands, drains, doorways and at regular points across the floor, and all debris removed. Refer to the Virtus Guide to Surface Preparation for further information.

Conductive floors must be laid to a uniform thickness which may require the use of a scratch coat.

Priming:

The substrate should have a relative humidity of <75% otherwise Flowprime DPM should be used. Initial priming should be carried out using Flowprime SF to isolate the substrate and provide a dust free surface to receive the copper tape. Take particular care to prime but not fill the anchor grooves. Spread onto the substrate and roll with a short-haired roller to ensure even coverage until the surface is completely wetted out, taking care to avoid pooling. Apply around the edges of and into anchorage grooves by brush to allow even spreading and avoid pooling. If, when cured, there are dry patches, a further primer coat is required. Allow to cure for a minimum 12 hours at 20 ºC. If the primer has been left to cure for > 48 hours then the primer surface should be mechanically abraded and the area re-primed. Failure to do so may result in pin-holing of the surface topping Install copper tape grid and connect earth linkage cables to the primed substrate. Apply Flowprime ESD at a rate of 0.25 kg/m² with a short-haired roller ensuring even coverage and avoiding pooling. When cured, ensure there are no glossy or bare patches. If so, re-prime using Flowprime ESD (see separate datasheet). Where required by specification, conductivity checks should be undertaken at this point.

Mixing & Application :

Prior to mixing, the temperature of the three components must be between 15 and 25 ºC. Pre-mix the coloured resin component before use. Add the hardener component to the coloured resin component and mix using a low speed electric mixer (300 - 400 rpm) for 1 - 2 minutes until homogeneous. Decant the mixture into a rotary drum mixer and add the aggregate component in stages, mixing for a minimum of 3 minutes until a uniform coloured, lump-free mix is obtained.

Apply to the primed areas to the required thickness using a steel float. Ensure that anchor grooves are fully wetted out and filled with material. Each mix should be mixed in exactly the same way for the same length of time to minimise the risk of shading.

The cured product should be protected from other trades using Kraft paper or similar breathable material. Polythene should not be used. Protect the installed floor from damp, condensation and water for at least 4 days.

Certain colours can be made to order subject to availability.

Technical Datasheets

Flowdur HF A/S Datasheet

Safety Data Sheets

Flowdur HF A/S Resin

Flowdur HF A/S Hardener

Flowdur HF A/S Aggregate