Story ID: 
MMU hangars feature high-tech floor finish
By: Mark Phelps
Caption: The final two of six E-series hangars are nearly complete at developer MMU-FTC’s site at Morristown Municipal Airport, N.J.
Word Count: 186
The final two of six E-series hangars are nearly complete at developer MMU-FTC’s site at Morristown Municipal Airport, N.J. These units are both 50 feet deep by 70 feet wide. Their bifold doors are 65 feet wide and 20 feet high, able to accommodate virtually all small and midsize jets and helicopters up to the size of a Sikorsky S-76.The three-coat laminate floor system used on all custom hangars built by MMU-FTC is designed for maximum light reflectivity and good appearance, but also to have sufficient traction when wet. After allowing the eight-inch concrete floor slab to cure for 60 days, the floor is coated with a 16-mil-thick epoxy-receiver coat. A special broadcast aggregate is then spread on top of the epoxy and allowed to dry. After the excess aggregate is swept off, the hardened surface is sanded to produce a mildly rough finish for good traction. A light gray epoxy pigmented grout coat is then applied with a squeegee, which both seals the floor and controls skid resistance. The final element is a color coat of urethane to give the floor its high gloss and abrasion resistance.