The 2 lbs fiberglass filament increases the density of the cement and effectively solves penetration problems. Strong and soft, when combined with the shape of the resin it can end up as an excellent structural material. Glass fiber is an inorganic non-metallic material with excellent performance, which is usually used as reinforcing material for composites, electrical insulation material and heat insulation material. It can be used in industrial and civil buildings, such as roofs, basements, large crafts, stepping stones, ponds, patios, pools and so on. After the glass fiber is mixed with the mortar, the irregular distribution of the glass fiber in the mortar enhances the elasticity of the mortar and inhibits the formation of small voids.

It is loose chopped strands of glass fibers, length: 1/4"(6.35mm), weight: 2.5 lbs/pack.

You can use it for industrial and civil construction, such as roof, basements, large crafts, stepping stones, pond, patios, pools etc.

Fiberglass is a kind of inorganic nonmetallic material with excellent performance, which is usually used as reinforcement material in composite materials, electrical insulation material and thermal insulation material.

It is inorganic fiber, non-combustible and has good chemical resistance, heat resistance are good. 

After the glass fiber is mixed with the mortar, the irregular distribution of the glass fiber in the mortar enhances the elasticity of the mortar and inhibits the formation of small voids.

A large number of fiber filaments increase the density of cement, which can effectively solve the penetration problem. Suitable for wet places such as basements, reservoirs, and exterior walls.

Its high-strength fiber filaments interconnect to form a dense web that holds the cement firmly in place. It can effectively improve the impact and seismic properties of cement.