Modified Bitumen

Modification of bitumen systems that are popular today for many reasons. They provide excellent resistance properties and flame retardants as expected from a traditional built-up roof, without the need to use heavy gravel cover. Can high-strength and handling characteristics with the use of modified bitumen combined with high quality. This unique combination, when used as a coating reinforce the polyester non-woven glass fiber mat, or a combination of glass fiber and polyester fiber, which produces high strength, elasticity and weather resistance. An additional benefit to be able to choose from three methods of application – hot asphalt, heat welding (burning or hot air), cold glue – is another reason for the modified bitumen popular system.

What is the difference between SBS and APP modifier?
SBS (styrene-butadiene-styrene) “rubber” modifier additive is combined with the assignment of flux asphalt to give the asphalt mixtures have stretch and recovery properties, better able to handle the pressure created by wind, temperature fluctuations and the roof in the normal expansion and contraction. Although these products are usually applied with hot asphalt, can also be welded by heat or cold adhesive is applied.

APP (atactic Polypropolyene) additive “plastic” modifier combined with the asphalt to give the asphalt harder time either be welded hot or cold applied with adhesive.Equipment for bitumen modification manufacturer APP plastomeric mix in SBS elastomer blend, so it will not have recovery properties associated with SBS products. APP product strength is its ability to be heat welded (torch applied), despite their recent “cold-applied” in some specifications.

APP products are designed for heat welded. They use a combination of modifier that enables a wider temperature during the welding heat, which makes them easier to use. Both APP and SBS can be heat sealed. It is important that SBS products are designed for welding with additional layers of hot asphalt in the back and a piece of burning.

What concerns the “progressive development” of modified bitumen system?
natural asphalt modification system for the application of “more” because they come in two different layers of waterproof – base consisting of one or more coats, and hats. This allows entrepreneurs to complete the entire base layer (s) without having to worry about monitoring for the finished part. Unfortunately, every time the base layer remains open, dirt and debris are allowed to accumulate, which in turn can cause blisters sometimes.

Recognizing this danger, most manufacturers limit the time that the layer (s) of the base may remain exposed to the elements five days. When more open would require the approval of manufacturers and cleaning procedures required for the application is closed. Always check with the manufacturer’s recommendation.

What are the advantages and disadvantages compared to the cold heat is applied modified bitumen system?
Some owners have switched to a system of modified asphalt is applied cold as hot tea or hot asphalt odor causing concern. the school system is a good example, especially now that many districts are offered throughout the school year. Staging asphalt kettle for hot applied systems can be security issues surrounding children and the smell can be an irritant to some people. In some cases, contractors may choose to use a cold adhesive is applied instead of applying heat welded or hot asphalt in this situation. After completing basic waterproofing membrane that is the same whether it is equipped with hot asphalt or cold adhesive. There is some concern until the adhesive “cold” is applied finally defined, which can take up to 30 days, depending on weather conditions. Additionally, there may be concerns about the smell and cold applied adhesive solvent content.

One method to keep using hot asphalt for the boiler of a scene in a restricted area, away from children and use a filter, post-combustion, controls the lower asphalt anger or other odors during installation. For example, the exhaust gas recovery system removes odors, smoke and particles in the kettle. Filters are not required with this process, the gas passes through the heat converter which is mixed with fresh air and superheated, 99 percent to eliminate odors and smoke. The use of low rabies asphalt also helps to remove some of the smell and smoke at the point of application