Where To BuyThe long-term durability of any resin floor system is determined by the adhesive bond achieved between the flooring material and the substrate. It is most important therefore that substrates are correctly prepared prior to application.
The substrate must be structurally sound. Loose or unsound concrete should be removed & made good. Surfaces must be entirely free of oil, grease, paint, corrosion deposits, dust, laitance, curing compound residues, or other surface deposits.
New Construction:
Floors to be coated or overlaid should be at least 28 days old unless water-reducing admixtures have been incorporated. The preferred method for surface preparation of concrete is captive blasting to produce a lightly exposed aggregate surface i.e., an ICRI CSP 4 or 5 surface profile. This produces a well-prepared laitance-free, the vacuum-cleaned surface to produce a lightly exposed aggregate surface. Alternatively, the use of light mechanical scabbling, grit/shot-blasting, or grinding with a diamond disk, followed by vacuum cleaning can also be utilized. Surface irregularities must be ground down or filled out with RepairPro EP FC/ RepairPro EP FCB or repair materials from RepairPro range.
Existing Construction:
All contamination must be removed and a sound, clean substrate exposed. Mechanical means of preparation are preferred followed by the removal of dust and other loose debris using an industrial vacuum. In areas of deep penetrating contamination by oils, greases, and fats, hot compressed air, followed by impregnation with a low-viscosity sealer/primer is the recommended treatment. Uneven concrete should be leveled to produce a roughened flat surface. Where repairs are required, they can be carried out using a suitable product from the RepairPro range. Expansion, control, and isolation joints in concrete substrates should be carried through FloorPro EP Screed and filled with a suitable sealant from the SealPro range.
Priming/ Sealing:
FloorPro EP Screed requires priming. Based on the project requirements, concrete floors should be primed with FloorPro Primer SF. Mix the two components of FloorPro Primer SF using a slow-speed drill with a suitable paddle. Mix until a uniform consistency is obtained. The components are pre-weighed and should not be split or divided. Once mixed, immediately apply FloorPro Primer SF by brush or roller to the prepared surface at an application rate in the range of 0.15 to 0.30 litre/m². Quantity will depend on surface texture and porosity. Work the primer into the surface and avoid over-application and puddling. Allow standing for 20 minutes to check for absorption. If the surface becomes matt and the primer is absorbed in the surface easily, it will be necessary to apply a second coat of FloorPro Primer SF, once the initial coat is tack-free. Immediately after application of the final primer coat broadcast FloorPro Anti-slip Aggregates silica sand on the surface of the primer
Apply the FloorPro EP Screed whilst the primed surface is still tacky. If the primer hardens, reprime within 24 hours. Ensure that the primer is touch dry prior to commencing application.
Expansion Joints:
Expansion joints in the existing substrate floor must be retained and continued through the FloorPro EP Screed and filled to the required level with a suitable sealant from the SealPro range, incorporating the appropriate movement accommodation factor (MAF). North Construction Chemicals have a range of joint sealants specifically designed for flooring, consult the technical department for advice.