Unfortunately, it is also prohibitively expensive and extremely difficult to repair. Modern fabrics have replaced silk with lighter and stronger options. Most hot air balloons are made of nylon now. Tyvek is sometimes used with experimental balloons, but its flammability makes it unsuitable for most purposes. read more
Ripstop nylon is durable, lightweight, long lasting, and perfect for the application. There are many different types of fabric used in hot air balloons depending upon the manufacturer and personal preference. read more
Most hot air balloons are made of nylon now. Tyvek is sometimes used with experimental balloons, but its flammability makes it unsuitable for most purposes. The fabric near the mouth of the balloon, where the burner is, must endure substantially higher temperatures than the rest of the envelope. read more
A hot air balloon is a nonporous envelope of thin material filled with a lifting gas that is capable of lifting a suspended payload into the atmosphere. read more