FOR PROFESSIONAL USE ONLY
Follow the directions of the flooring and adhesive manufacturer to determine the maximum allowable moisture content (RH) or transmission of the substrate. If the moisture content (ASTM F-2170) or moisture vapor transmission rate (ASTM F-1869) of the substrate exceeds the requirements of the flooring system, utilize Platform EMS prior to installation of the PrepPro Feather. PrepPro Feather will not inhibit transmission of moisture to the finished flooring.
All Substrates must be sound, clean, dry and free of contaminants (oil, dirt, laitance etc.) that may interfere with adhesion. Do not use solvents, acids, chemical adhesive removers to prepare the substrate. All bond breaking substances (cure residues, excess salts from silicates etc.) must be removed prior to priming. Completely vacuum all dust and debris from the substrate prior to material application.
Honor all moving joints. Complete crack and substrate repairs prior to installation. Moving cracks or joints filled with PrepPro Feather may reflect through finished floor. Consult an engineer for required joints and crack repairs prior to installation.
Maintain a minimum of 50ºF prior, during the application and for 72 hours after installation. Acclimate the material to a minimum of 50ºF prior to mixing.
If uncertain of suitability or bond, test an inconspicuous area for compatibility and adequate bond prior to proceeding.
Surface Preparation
Concrete Floors
All concrete must be sound, stable, clean and free of any bond breaking materials (silicates, curing compounds, laitance, dirt). Mechanically remove weak surfaces, and any contaminants to sound concrete. Priming is not required. Apply from feather edge to ½” in depth.
Adhesive Residue
Non-soluble adhesives must be scraped to a well bonded residue. Water soluble and pressure sensitive adhesives must be removed mechanically to the substrate. Verify type of adhesive prior to mechanical removal to ensure adhesive containing asbestos is not introduced into the environment. Follow all local, state and federal laws for removal and disposal of adhesive or flooring materials containing asbestos. Test to ensure any existing adhesive will not bleed through to new adhesive, or finished flooring. If substrate (concrete) under adhesive is weak or poorly bonded, remove such areas down to well bonded, sound, clean substrate.
Wood
PrepPro Feather is suitable for skimcoating well bonded (screwed & glued) APA rated, exterior grade wood floors free of deflection. Wood floors are required to be a minimum of ¾”, L/360 and comply to local building codes. No primer is required. Do not install over OSB, chipboard, Masonite, or surfaces non APA rated, and/or non-dimensionally stable materials subject to swelling or movement.
Quarry & Ceramic Tile
Ensure waxes or sealers are stripped from the surface of the tiles. Abrade to a dull finish. Remove dust by vacuum. Consider utilizing Platform P360 Primer for additional bond.
Gypsum substrates
Not recommended for use over Gypsum floors. Contact Platform for a superior Feather Finishing patch material compatible with Gypsum substrates.
Vinyl Flooring
Not for use as an embossing patch over vinyl flooring.
Mixing
Water: Up to 2.5 US Qts per 10 lb bag
Alternatively, mix by volume, 2 Parts Powder to 1 Part Water.
Mix Method: ALWAYS utilize a drill and mix until material is thoroughly homogenous and lump free. Overwatering and/or under mixing will result in difficult placement and lower ultimate compressive strengths.
Add designated clean, potable water to a clean mixing vessel, add the powder and mix mechanically until homogenous and lump free. Mix no more material than can be placed within 10 minutes. Do not remix with additional water.
Material Application
Utilize a clean trowel to place the material across on the surface of the substrate. No minimum thickness is required. For deeper areas, allow initial coat to reach partial set prior to building layers. Once dry, material may be sanded to remove placement imperfections prior to installation of floorcovering.
Dry Time Prior to Flooring Installation
PrepPro Feather is self drying, do not wet cure or use curing or sealing compounds. Depth of placement and ambient conditions (temperature and humidity) will impact the dry time of the material. Material is typically dry in 30-45 minutes and ready for light sanding prior to application of flooring, or direct application of flooring.
