05-08-2014, 08:18 AM
I see some important negatives with using an EXTERIOR spray on foam as it relates to shipping containers, and more specifically, 'steel' containers:
1. The nature of the foam is both it's virtue and it's downfall. Because it 'encapsulates' whatever it is applied to, IF there are any voids, whether formed by poor application OR any other external force, if those voids get moisture in them, they will promote rusting of the steel at that particular location and you'll NEVER see it coming since the foam will hide it.
2. Applying foam CAN BE, but is more than likely not a particularly accurate method and so the finish surface will appear lumpy, hilly, and hummocky. In other words, the finish surface MUST BE worked to get the desired results.
3. The foam itself is not especially water proof and so a best case scenario would be to apply a liquid EPDM/Rubber over it. However, this kind of application also prevents moisture transfer causing (potentially) interior build-up of moisture on the walls (AGAIN, as it relates to steel OR aluminum containers). Not to mention the high cost of the liquid EPDM/Rubber materials; about $3.50-5.50 per Square Foot which INCLUDES labor by a professional installation technician ~ ~ ~
jus' sayin'
Punanny
1. The nature of the foam is both it's virtue and it's downfall. Because it 'encapsulates' whatever it is applied to, IF there are any voids, whether formed by poor application OR any other external force, if those voids get moisture in them, they will promote rusting of the steel at that particular location and you'll NEVER see it coming since the foam will hide it.
2. Applying foam CAN BE, but is more than likely not a particularly accurate method and so the finish surface will appear lumpy, hilly, and hummocky. In other words, the finish surface MUST BE worked to get the desired results.
3. The foam itself is not especially water proof and so a best case scenario would be to apply a liquid EPDM/Rubber over it. However, this kind of application also prevents moisture transfer causing (potentially) interior build-up of moisture on the walls (AGAIN, as it relates to steel OR aluminum containers). Not to mention the high cost of the liquid EPDM/Rubber materials; about $3.50-5.50 per Square Foot which INCLUDES labor by a professional installation technician ~ ~ ~
jus' sayin'
Punanny
Kaihekili