Underlay membrane S-41

when installed as a system with S-40 and S-45, forms an acid, alkali and water-resistant barrier as well as a flexible mem¬brane between Summitville floor brick and concrete substrates. S-41 is a hot melt oxidized asphaltic compound free from fillers or other adulterants. S-41 contains no coal tar, phenol or naval store products. S-41 will not be attacked when immersed for 5 days at 75°F in each of the following solutions: 1% Sulfuric Acid, 5% Sodium Hydroxide, 5% Potassium Hydroxide, Water saturated with H²S, For full testing information, see chemical resistance reference chart in technical data sheet. The S-40/41/45 system is recommended for use as an impervious membrane under chemical resistant brick in corrosive environments such as flooring, walls, sumps, trenches, secondary containment barriers, concrete tanks, and manholes in steel, chemical, pulp, paper and refining industry applications. It protects concrete against highly corrosive chemical attacks and isolates brick from structural movement of the concrete. The S-40, 41, 45 system is not intended for use as an uncovered membrane as it can be affected by thermal and/or mechanical damage if not protected by brick coverings. The S-40, 41, 45 system is not recommended for use with organic solvents, some organic acids and strong oxidizers.