Professional Application Guide - Alexseal

Specialty ApplicationsPriming & Surfacing Steel for Teak OverlaySteel Substrate PreparationBefore proceeding, deck surfaces should be completely blasted to the substrate.Degrease bare steel with ALEXSEAL ® Surface Degreaser / Dewaxer (A9091) using the“Two Rag Cleaning Method” starting on page 31.To achieve optimum adhesion and performance, previously painted and new steelshould be prepared by sand blasting to near-white metal Sa 2.5 (SSPC-SP10-85) and/orground with 36 - 60 grit to a 2 - 4 mil (50 - 100 microns) profile.Important:DO NOT wipe the surface with rags after blasting or grinding. The steelsurface will snag fibers that will act as wicks through the protective primerand could decrease corrosion resistance.Steel surfaces should be cleaned using clean, dry compressed air and a bristle broomto remove all dust before product application.After the application of ALEXSEAL ® Protective Primer 161, but before each subsequentproduct application, all surfaces should be cleaned using clean, dry compressed air andclean rags to remove all dust and contaminants.Overview of Steps to Prime & Fair The Steel Substrate:1. Apply ALEXSEAL ® Protective Primer 161 per the “Technical Data Sheets” startingon page 642. Optional: Apply ALEXSEAL ® Fairing Compound 202 as needed to achieve thedesired fairing quality level. Fair the surface per TDS recommendations or refer toFairing Compound 202 instructions within “Fairing” starting on page 32.3. Optional: Apply ALEXSEAL ® Super Build 302, Fine Filler 303 or Protective Primer161 as needed. Apply products per TDS recommendations or refer to instructionsfor Super Build 302 and Fine Filler 303 in “Surfacing” starting on page 36 orProtective Primer 161 in “Substrate Preparation & Priming” starting on page 26.4. The surface is now sealed and ready for the teak deck preparation and installation.Specialty ApplicationsCoating Aluminum Surfaces with Minimal Fairing NeedsSurfaces and manufactured components composed of aluminum and aluminum-alloyare found in a variety of places on many vessels. These surfaces include – but are notlimited to – sailboat spars, window and door frames, brackets and other miscellaneousparts.Note:Most parts do not require a chemical pre-treatment prior to painting.Recommended procedures for coating aluminum components typically fallinto two categories; depending on whether the metal has been chemically pre-treated ornot.Aluminum Surfaces Not Pretreated with Chemicals1. Degrease the bare aluminum substrate with ALEXSEAL ® Surface Degreaser /Dewaxer (A9091) using the “Two Rag Cleaning Method” starting on page 31.2. To achieve optimum adhesion and performance, the aluminum should be sandedwith 120 - 180 grit to a very clean, silver/white surface.3. Abraded aluminum surfaces should be cleaned using clean, dry compressed airand a bristle broom to remove all dust before product application.Important:DO NOT wipe the surface with rags after sanding or grinding. The aluminumsurface will snag fibers, which will act as wicks through the protective primerand could decrease corrosion resistance.Note:Application of an ALEXSEAL ® Protective Primer should occur within 12 hoursof the abraded metal preparation. CF Metal Primer 156 or Cor Spec Primer135 are recommended where minimal or no fairing is required. Protective Primer 161may also be used in this application, but the higher film thickness of Protective Primer161 will create more surface texture in the final topcoat application if the surface is notsealed with Finish Primer 442 and sanded, prior to applying Premium Topcoat 501.After the application of an ALEXSEAL ® Protective Primer, but before each subsequentproduct application, all surfaces should be cleaned using clean, dry compressed airand clean rags to remove all dust and contaminants. An additional wipe down withALEXSEAL ® Surface Cleaner (A9049) using the “Two Rag Cleaning Method” starting onpage 31 is recommended to ensure the removal of surface contamination. Final dustremoval with a tack rag is also recommended before applying an ALEXSEAL ® Topcoat.Overview of Steps to Prepare and Paint the Aluminum Surface:1. Apply an ALEXSEAL ® Protective Primer per the TDS recommendations or seeinstructions for Protective Primer 161, CF Metal Primer 156 and Cor Spec Primer135 in “Substrate Preparation & Priming” starting on page 26.2. Based on the fairness quality level, proceed to steps 3, 4, or 5 as needed. If50ALEXSEAL ® Professional Application Guide version 0.4.3ALEXSEAL.COM > Europe: +49 0 40 75 10 30 > North America: +1 843 654 775551