Series 118

Uni-Bond Mastic

Generic Type

Mastic Waterborne Acrylic

Common Usage

A high-build, rust-inhibitive, elastomeric coating formulated for exceptional adhesion and corrosion resistance over minimally prepared aged coating systems. Series 118 is an excellent choice for projects where abrasive blast cleaning of the substrate is not possible and an anti-corrosive coating is needed. Uni-Bond Mastic accepts a variety of high-performance topcoats for the creation of a long-term protective and aesthetic coating system. Coating film can be reinforced and strengthened with a variety of mesh options when dictated by exposure conditions and service environments.

Special Qualifications

Series 118 meets the requirements of LEED-Low-Emitting Materials, Collaborative for High Performance Schools-Paints & Coatings, WELL Building Standard-VOC Restrictions, and Living Building Challenge–Healthy Interior Performance. Contact your Tnemec representative for more information.

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Volatile Organic Compounds

Unthinned: 0.26 lbs/gallon (31 grams/litre) †

Number of Components



Steel: Self-priming or Series 1, 90-97, 91-H₂O, 94-H₂O, 394.

Recommended DFT

6.0 to 8.0 mils (150 to 205 microns) per coat. Note: Two coats are required over bare steel. Overcoating an aged system that is mostly intact and tightly adhered can be achieved by spot priming prior to applying a full coat.



Volume Solids

55.0 ± 2.0% †

Theoretical Coverage

882 mil sq ft/gal (21.6 m²/L at 25 microns). See APPLICATION for coverage rates. †

Curing Time

Temperature To Touch To Handle To Recoat
75°F (24°C) 30 minutes 4 hours 8 hours

Curing time varies with surface temperature, air movement, humidity and film thickness.


Series 30, 72, 73, 700, V700, 701, V701, 740, 750, 1026, 1028, 1029, 1070, 1070V, 1071, 1071V, 1072, 1072V, 1074, 1074U, 1075, 1075U, 1094, 1095 or 1096. Note: Series 118 is not intended to be a finish coat. A topcoat is strongly recommended for aesthetics and avoidance of dirt accumulation.


Unthinned: 0.02 lbs/gal solids

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