I called Selkirk customer service to clarify what the inner layer of their Suretemp chimney was made of. Their website describes Ultratemp comprehensively (430ss outer and 304ss inner) but only states that Suretemp has a stainless steel outer layer.
They confirmed Suretemp is 430ss outer and inner. As I understand 430 has no nickle while 304 has up to 10% which is what contributes to its higher resistance to corrosion.
The difference in price between the two is pretty big.
I also priced Duratech's all-fuel stainless insulated chimney and disovered that theirs is made with all 430ss as well, but costs over 50% more than Selkirk's Suretemp (also all 430ss). Durratech does claim their inner layer is 25% thicker than their competitor's (Selkirk). I wonder if the thicker ss is their solution to not using 304ss. It would take longer to corrode through.
I stumbled on this bit of research when I priced Selkirk at my local dealer for a new install and discovered the different models.
I wonder if anybody here has been faced with the choice between Selkirk Suretemp and Ultratemp along with Duratech and why they chose the way they did.
Thanks
They confirmed Suretemp is 430ss outer and inner. As I understand 430 has no nickle while 304 has up to 10% which is what contributes to its higher resistance to corrosion.
The difference in price between the two is pretty big.
I also priced Duratech's all-fuel stainless insulated chimney and disovered that theirs is made with all 430ss as well, but costs over 50% more than Selkirk's Suretemp (also all 430ss). Durratech does claim their inner layer is 25% thicker than their competitor's (Selkirk). I wonder if the thicker ss is their solution to not using 304ss. It would take longer to corrode through.
I stumbled on this bit of research when I priced Selkirk at my local dealer for a new install and discovered the different models.
I wonder if anybody here has been faced with the choice between Selkirk Suretemp and Ultratemp along with Duratech and why they chose the way they did.
Thanks