Professional Application Guide - Alexseal

Specialty ApplicationsPainting boats frequently requires a process for a unique application. These may beunique procedures – or combinations of procedures – to prepare, prime and finish asurface. In this section we include some of the more common specialty applicationswith additional steps and techniques to achieve consistent and professional results.Painting Wood with ALEXSEAL ® Clear CoatBefore proceeding, prepare and clean the wood as described in the Wood SubstratePreparation section in “Substrate Preparation & Priming” starting on page 26.Note:The surface will required three or four clear coat applications in order tobuild up the proper film thickness. Up to twelve coats will be needed for aneffective application. 3 - 4 coats per day is an acceptable practice. The final topcoatapplication is usually only 2 - 3 coats in order to maximize the flow-out. Follow mixingand application instructions for ALEXSEAL ® Clear Coat in the “Technical Data Sheets”starting on page 641. Sand bare wood smooth with 100 - 180 grit sandpaper.2. It is recommended to seal the wood with a quality epoxy resin using a UV stablehardener. Consult your ALEXSEAL ® representative for further information regardingsealing the wood prior to applying ALEXSEAL ® Clear Coat (T0125). ALEXSEAL ®does not recommend applying T0125 directly to bare wood because the wood maydramatically discolor.3. Machine sand the epoxy surface using 220 grit sandpaper to achieve an adequatesurface profile for the finish coat.4. Remove sanding dust with clean cloths and clean, dry compressed air. Wipe withALEXSEAL ® Wipe Down Solvent (A9049) using the “Two Rag Cleaning Method”starting on page 31.5. The surface is now ready for the first of three or four topcoat applications buildingup the proper film thickness. Apply ALEXSEAL ® Clear Coat. Apply 3 - 4 build-upcoats to a wet film thickness (WFT) of 3 - 4 mils (75 - 100 microns) per coat.6. Allow to dry overnight and sand with 320 - 400 grit. Finer grits are recommendedfor use on corners and curved surfaces to minimize coating removal.7. Repeat steps 4 - 7 until 10 - 12 coats have been applied and the wood grain iscompletely filled and sealed.Specialty ApplicationsPriming & Surfacing Aluminum for Teak OverlayBefore proceeding, deck surfaces should be completely blasted to the substrate.Degrease bare aluminum with ALEXSEAL ® Surface Degreaser / Dewaxer (A9091) usingthe “Two Rag Cleaning Method” starting on page 31.To achieve optimum adhesion and performance, previously painted and new aluminumshould be ground with 36 - 60 grit and/or sand blast prepared to a 3 - 4 mil (75 - 100microns) profile and a very clean, silver/white surface.Important:DO NOT wipe the surface with rags after blasting or grinding. The aluminumsurface will snag fibers, which will act as wicks through the protective primerand could decrease corrosion resistance.Abraded aluminum surfaces should be cleaned using clean, dry compressed air and abristle broom to remove all dust before product application.Note:Application of ALEXSEAL ® Protective Primer 161 should occur within 12 hoursof the abraded or blasted metal preparation. Before each subsequent productapplication, all surfaces should be cleaned using clean, dry compressed air and cleanrags to remove all dust and contaminants.Overview of Steps to Prime & Fair The Aluminum Substrate:1. Apply ALEXSEAL ® Protective Primer 161 per TDS recommendations or refer toProtective Primer 161 instructions in “Substrate Preparation & Priming” starting onpage 262. 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.8. Allow to dry overnight and sand with 320 grit.9. Remove sanding dust with clean cloths and clean, dry compressed air. Wipe withALEXSEAL ® Wipe Down Solvent (A9049) using the “Two Rag Cleaning Method”starting on page 31.10. Apply the final 2 - 3 coats of ALEXSEAL ® Clear Coat (T0125) to a wet film thickness(WFT) of 2 - 3 mils (50 - 75 microns) per coat.48 ALEXSEAL ® Professional Application Guide version 0.4.3ALEXSEAL.COM > Europe: +49 0 40 75 10 30 > North America: +1 843 654 775549