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Welcome The objective is to provide the best recommendation to diminish the possibility of corrosion at the metal and insulation interface. The objective.

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Presentation on theme: "Welcome The objective is to provide the best recommendation to diminish the possibility of corrosion at the metal and insulation interface. The objective."— Presentation transcript:

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2 Welcome The objective is to provide the best recommendation to diminish the possibility of corrosion at the metal and insulation interface. The objective is to provide the best recommendation to diminish the possibility of corrosion at the metal and insulation interface. Explanation on the differences between moisture retarder and vapor barrier. Explanation on the differences between moisture retarder and vapor barrier.

3 Show the results of corrosion tests done on multiple bare metals. (Galvanic Test) Show the results of corrosion tests done on multiple bare metals. (Galvanic Test) Show the results of corrosion tests done on multiple bare metals laminated with polysurlyn moisture retarder. Show the results of corrosion tests done on multiple bare metals laminated with polysurlyn moisture retarder. Show the results of corrosion test done on painted moisture retarders. (Pinhole Test) Show the results of corrosion test done on painted moisture retarders. (Pinhole Test) Introduce ITWs recommended solution. Introduce ITWs recommended solution.

4 Terminology Two terms often confused Two terms often confused Vapor Retarder /Barrier Vapor Retarder /Barrier Moisture Retarder Moisture Retarder

5 Vapor Retarder/ Barrier Definition- A material used to prevent moisture vapor in the atmosphere from reaching the insulation on cold work. Definition- A material used to prevent moisture vapor in the atmosphere from reaching the insulation on cold work. System operating below ambient temperature: vapor drive is toward the cold pipe and equipment System operating below ambient temperature: vapor drive is toward the cold pipe and equipment Vapor barrier properly applied to warm side of insulation can minimize problems Vapor barrier properly applied to warm side of insulation can minimize problems

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7 Moisture Retarder Definition- A material, usually Polysurlyn®, which is heat laminated to the inner surface of metal jacketing to keep moisture from contacting the metal jacket in order to prevent corrosion of the jacket. Definition- A material, usually Polysurlyn®, which is heat laminated to the inner surface of metal jacketing to keep moisture from contacting the metal jacket in order to prevent corrosion of the jacket. Function is really corrosion retarder. Function is really corrosion retarder.

8 MOISTURE RETARDER

9 Moisture Entrapped between the insulation jacket and the insulation may function as weak electrolyte. Entrapped between the insulation jacket and the insulation may function as weak electrolyte. This condition may set up galvanic corrosion This condition may set up galvanic corrosion Important to keep insulation and exterior of vapor retarder dry Important to keep insulation and exterior of vapor retarder dry

10 Job Site Conditions May be difficult to insure that insulation and vapor retarder dry before applying insulation jacketing May be difficult to insure that insulation and vapor retarder dry before applying insulation jacketing We always recommend a Polysurlyn® moisture retarder. The insulation jacketing may come into contact with excessive amounts of moisture at anytime. We always recommend a Polysurlyn® moisture retarder. The insulation jacketing may come into contact with excessive amounts of moisture at anytime.

11 Standard Moisture Retarders Polysurlyn® - a three layer co extruded film Polysurlyn® - a three layer co extruded film Paint – of different types Paint – of different types

12 GOAL Provide the best recommendation to diminish the possible interior corrosion of insulation jacketing installed by you or your customers Provide the best recommendation to diminish the possible interior corrosion of insulation jacketing installed by you or your customers

13 Corrosion of Insulation Jacketing Metal Types Metal Types - All - All Differentiation Differentiation - Based on user specification - Based on user specification -Job Site environment -Job Site environment

14 Galvanic Corrosion Testing Test parameters Test parameters Materials tested Materials tested Test results Test results

15 Aluminum 3000 Series Bare Corrosion on the inside of the unprotected aluminum 3000 series jacket.

16 Aluminum 3000 series Bare Corrosion on the inside of the unprotected aluminum 3000 series jacket. Corrosion Pits

17 Galvanized Steel Bare Removed from test early Removed from test early Zinc coating failed Zinc coating failed

18 Galvanized Steel Bare Corrosion on the inside of the galvanized steel jacket

19 Zinc/aluminum coated steel Red corrosion on the interior of a zinc/aluminum steel jacket.

20 Aluminized Steel Corrosion

21 Aluminum 3000 series w/PSMR Aluminum 3000 series H14 jacket with no corrosion

22 Zinc/aluminum coated steel w/PSMR Zinc/aluminum steel jacket with Polysurlyn®

23 Conclusion Bare metal Bare metal -All corrodes -All corrodes Polysurlyn® Polysurlyn® - No evidence of corrosion - No evidence of corrosion

24 Pinhole Testing Test Parameters Test Parameters Test Results Test Results

25 Typical Painted Aluminum Jacketing

26 Painted Aluminum Jacketing- Thermoclad®

27 Thermoclad® Plus

28 Comparison

29 Pin Hole Test Results ALL paint type moisture retarders tested have pin holes ALL paint type moisture retarders tested have pin holes Thermoclad® Plus has no pinholes Thermoclad® Plus has no pinholes

30 Conclusion Thermoclad® Plus offers superior interior protection Thermoclad® Plus offers superior interior protection

31 Recommendations Polysurlyn® moisture retarder is recommended for all types of metal jacketing as best practice Polysurlyn® moisture retarder is recommended for all types of metal jacketing as best practice Polysurlyn® shall be 3 mil thickness, 3 layer co-extruded film, factory heat laminated to metal jacketing Polysurlyn® shall be 3 mil thickness, 3 layer co-extruded film, factory heat laminated to metal jacketing

32 ITW Insulation Systems Canada Aluminum Jacketing Products We will offer two Products: We will offer two Products:GOOD Aluminum with Polysurlyn Moisture Retarder. Aluminum with Polysurlyn Moisture Retarder. Exterior: Bare Aluminum Exterior: Bare Aluminum Interior: 3 mil thickness 3 layer co- extruded Polysurlyn factory heat laminated to metal jacketing. Interior: 3 mil thickness 3 layer co- extruded Polysurlyn factory heat laminated to metal jacketing.

33 BEST THERMOCLAD PLUS ® THERMOCLAD PLUS ® Exterior: 0.4 mil clear un-tinted coil coated thermosetting enamel. Exterior: 0.4 mil clear un-tinted coil coated thermosetting enamel. Interior: 0.6 mil laminate grade coil coated thermosetting enamel covered by a 3 mil thickness 3 layer co-extruded polysurlyn factory heat laminated over the enamel undercoat. Interior: 0.6 mil laminate grade coil coated thermosetting enamel covered by a 3 mil thickness 3 layer co-extruded polysurlyn factory heat laminated over the enamel undercoat. FOR SPECIFICATION DATA SHEETS PLEASE VISIT OUR WEBSITE AT WWW.ITWINSULATION.CA


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