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GRAYSON TEST February 1994
Comparative corrosion tests between Insul-Fluf and a well known fibreglass insulation in accordance with NZS 4222:1992 Appendix A.
The results were as follows:
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Metal Coupon
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Thickness
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Metal Grade
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Effects of Fibreglass
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Effects of Insul-fluf
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Copper
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0.1mm
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Cabra No.110 Soft Copper
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Some small - medium
areas of corrosion leaving black deposit
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Some very small areas of surface corrosion
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Aluminium
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0.08mm
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-
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Large areas of corrosion on 1 side of coupon - not all the way through
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Small areas of slight surface corrosion
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Steel
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0.08mm
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Shim steel
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Extensive corrosion
especially on corners – small holes on one corner
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Virtually no corrosion evident
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Galvanised Steel
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1.5mm
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Standard wall framing member galvanised steel
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Some small areas of surface corrosion.
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Some small areas of surface corrosion.
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