Andie Test System - Roof Mastic Calculator for the Painting System: Roof Mastic Options Metal Unglazed Roof Tiles 1 Unglazed Roof Tiles 2 Area for PaintingMetalPrimerPremium Welcoat Zinc Chromate Yellow PWPRE-6500 (in Liters)1st TopcoatRain or Shine Roof Mastic - Low Sheen (in Liters)2nd TopcoatRain or Shine Roof Mastic - Low Sheen (in Liters)Unglazed Roof Tiles 1PrimerRain or Shine Roof Mastic - Low Sheen (in Liters)1st TopcoatRain or Shine Roof Mastic - Low Sheen (in Liters)2nd Topcoat (optional)Rain or Shine Roof Mastic - Low Sheen (in Liters)Unglazed Roof Tiles 2PrimerRain or Shine Roof Mastic - Low Sheen (in Liters)1st TopcoatRain or Shine Sun Roof - Gloss (in Liters)2nd TopcoatRain or Shine Sun Roof - Gloss (in Liters)