Owens Corning Ecotouch RA Series Insulation

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1 Owens Corning Ecotouch RA Series Insulation Owens Corning advantages with Ecotouch RA Series Insulation for Double Wall Spiral Ducts are: An Industry first in clearly naming and promoting and offering particular light density insulation geared especially for the double wall spiral market. Meets all flame and smoke requirements. Available in stock at Newark so can be mixed with other HVAC products. Most popular products are standard and in stock in most popular widths and thicknesses. The vast majority of insulation thickness used is 1. Different densities to achieve intended results for the manufacturer be it thermal or acoustical or both. PRODUCT USE & COMPETITIVE PRODUCTS Double wall spiral ducts can be rectangular or round and some manufacturers even make flat oval. It is pre-insulated ducts and fittings, intended for both indoor and outdoor use. The system is based on sheet steel inner and outer casings with insulation in between. Some can be as much as 50 in diameter. The inner wall can be either a perforated or solid. There are 2 different types of double wall applications Acoustical double wall for noise control and thermal double wall for temperature control. Double wall duct has both acoustical and thermal insulation advantages. Acoustical double wall duct has a solid outer shell and a perforated inner shell to effectively reduce system noise. Thermal control double wall is constructed with solid inner and outer shells for assured thermal conductivity and vapor barrier integrity. One important advantage of double wall duct is that fiberglass insulation and sheet metal screws are not exposed to the airstream, permanently protecting the insulation and eliminating the possibility of it disconnecting from the outer shell of the ductwork. Double wall duct is ideal for applications such as schools, hospitals, and laboratories. In exposed duct settings, double wall has a clean look that is much more aesthetically pleasing than externally insulated duct. Most manufacturers try to have an R value of at least 3.6 per inch. Some manufacturers put a facing on the insulation (like Mylar) to keep fibers from entering the airstream when they produce acoustic double wall. Mylar is often used to generically refer to polyester film or plastic sheet. However, it is a registered trademark owned by Dupont Tejjin Films for a specific family of plastic sheet products. The true generic term for this material is Polyester Film or Plastic Sheet. You know what Mylar is if you have ever bought those shiny balloons you would get from a grocery store. Our solution is to provide a factory installed facing on the insulation and relieve the sheet metal manufacturer from doing this labor intensive Mylar process themselves. We are undergoing testing on this right now with Eastern Sheet Metal from Cincinnati. Early indications are they like the black mat facing we supplied we are undergoing testing on air erosion in a few weeks.

2 Most manufacturers supply a 72 wide double layer insulation product into this market. Double layer means to supply a 2 product that is bisected into 2 pieces each being 1 thick. We supply a 72 product double layer. We will investigate offering a single layer product as demand dictates and provide differentiation with our competitors. This is why some manufactures like Knauf sell unfaced duct wrap or KN wool into this market it is single layer. Ecotouch RA Series Insulation for Double Wall Spiral Ducts provides our start to becoming a one stop solution for spiral manufacturers to obtain their insulation. Our research and field work has shown that many spiral manufacturers are doing whatever it takes to provide an insulation between the 2 walls of double wall. We have found spiral manufacturers who use unfaced duct wrap, metal building insulation, duct liner and even building insulation. Once we add this summer a faced RA product to offer we will truly be a one stop shop for this market. From what we have seen in the market there are 3 main ways for spiral manufacturers to install the glass wool between the two walls. There may be others but these seem to be main installation techniques used: 1. Rotary type machine There have been 3 manufacturers who we have seen that are using this system: M & M Manufacturing in Texas, Spiral Pipe of Texas and Dixie Metal in Memphis. We are sure there are others but these we know for sure. This is a picture of men wrapping a Knauf 12 slit light density product onto a flat oval duct. Once the duct is wrapped, the men take the wrapped duct and slide it into the duct that is laying on the floor. Here is a picture of Knauf ¾ pound 1.5 thick product that is used to build this duct using this process in picture above. Knauf used to slit this product at their factory. They no longer do this. For Knauf product to be used in these machines, a fabricator (in this case Bay in Dallas) takes the 48 product from Knauf and slits it into 12 sections on band saw and then puts it in a poly bag as shown. Then this is sold to the Sheet metal shop.

3 Our solution to this is to work with a particular fabricator in this case Spiral Pipe of Texas and have our OEM engineer work with them to design a new process using a 60 wide roll from us saving them time and labor. 2. Manual layup procedure First the spiral manufacturer takes the inner wall (note the small openings on the metal these are very precise depending on acoustical and thermal control the manufacturer is trying to hit example shown).

4 This is the insulation this spiral sheet metal shop was using for double wall application: The manufacturer takes the insulation and puts it on the floor. The width of the insulation on the floor is set to correct circumference of the inner wall of the duct. The insulation is then set on the floor. See in this picture below the spray glue machine that applies glue to the insulation. Once the glue is applied the inner wall duct is rolled back and forth until you get a finished section like this below. Once wrapped it is slid into the outer duct to complete the section.

5 3. Namcor SideLiner Double Wall Assembly System. We were informed at the SPIDA convention that Don Park in Atlanta bought one of these machines to put in their double wall spiral currently using JM as well (thru Trident in Atlanta). Watch it on Youtube at - Or at: They were very happy with it. John Trainor will be happy to know this is made in Ilderton, Ontario Canada. Here is a general comparison of typical insulations that are used for double wall. Double Wall Spiral Options (normally used in industry - light density) Product Color Temp Limit Density PCF K 75F Bisected Normal Thicknesses Normal Widths Octave Band Performance - HZ (all at 1" thickness) OC RA Ecotouch RA-26 Light Tan 350F yes 1", 1.5", 2" 60" & 72" Rotary RA-25 Light Tan 350F yes NA yet 60" & 72" RA-24 Light Tan 350F yes 1" 72" RA-23 Light Tan 350F yes NA yet 60" & 72" RA-22 Light Tan 350F yes NA yet 60" & 72" N/A N/A N/A N/A N/A N/A JM SG Series (non Bio) SG-28 Yellow 350F yes 1-3" 60" & 72" Rotary SG-26 Yellow 350F yes 1-3" 60" & 72" SG-25 Yellow 350F yes 1-3" 60" & 72" N/A N/A N/A N/A N/A N/A SG-24 Yellow 350F yes 1-2" 60" & 72" SG-23 Yellow 350F yes 1-2" 60" & 72" N/A N/A N/A N/A N/A N/A SG-22 Yellow 350F yes 1" 60" & 72" Knauf KN Series (Bio) KN - 75 Brown 650F no 1.5", 2", 2.5", 3" 48", 72", 96" N/A N/A N/A N/A N/A N/A Rolls only - all MTO KN Brown 650F no 1", 1.5", 2", 2.5", 3" 48", 72", 96" KN Brown 650F no 1", 1.5", 2" 48", 72", 96" KN Brown 650F no 1", 1.5", 2" 48", 72", 96" KN Brown 650F no 1" 1.5" 48", 72", 96" N/A N/A N/A N/A N/A N/A