Viking TG Glassfelts are heavy duty, coal tar saturated fiberglass mats used as ply sheets in the construction of a coal tar built-up roof. The mats are made of fiberglass mono filaments bonded together with a water resistant melamine binder and reinforced with fiberglass strands. Viking TG Glassfelts are coated with high quality, roofing-grade coal tar and dusted with fine sand to prevent sticking.

In the process of manufacturing, a porous sheet of uniformly distributed glass fibers bonded with a resinous binder is uniformly coated with coal tar. The impregnated mat is surfaced lightly with fine sand to prevent sticking in the roll. The coal tar impregnated glass mat shall neither crack nor be so sticky as to cause tearing upon being unrolled at ambient temperatures above 50°F (10°C). It can be used in conjunction.

Advantages:

• A Better Roofing Felt: Viking TG Glassfelts, by nature of the manufacturing process, are uniformly porous. Interply coal tar moppings readily penetrate adjacent felt layers to insure continuous ply adhesion. In addition, the felts' natural porosity minimizes the negative effects of trapped moisture and blistering.
• Rot-Proof Protection: Viking TG Glassfelts are inorganic, rot-proof roofing felts. They will not wick or absorb moisture. As a result, the risk of felt ply delamination is minimized and a stronger, more secure roof assembly is produced.
• Coal Tar Based: Coal tar has long been recognized as one of the longest lasting waterproofing materials available for roof systems. Coal tar pitch provides natural resistance to moisture, chemicals, ultraviolet radiation, and aging. When Viking TG Glassfelts are used in conjunction. the roof will provide protection from the harshest of roof top conditions.
• Designed For Today's More Demanding Roofing Needs: Today, roofs are larger and flatter. The incidence of thermal shock damage has increased because of the popularity of lightweight metal decks, sophisticated heating and air conditioning systems and increased insulation. As modern engineering practices have imposed greater demands upon roof system performance, the quality of conventional roofing paper has deteriorated. Viking TG Glassfelts put an end to the "quality slide." They have the strength and flexibility to measure up to today's more demanding requirements.