Every roofing manufacturer has produced bad batches of shingles,
so rather than investigating the company, go back to your reported problems and see which line / brand of IKO your talking about and the time frame in which they were produced.
Than you can ask about a specific shingle, produced during a specific time frame and get some accurate and creditable responses.
I installed roofs on several homes / small business's in the mid to late 90's using IKO products with -o- issues.
I know of at least two fellow roofers in these forums who install them on a regular basis with out issue.
So your search needs to be more specific.
so rather than investigating the company, go back to your reported problems and see which line / brand of IKO your talking about and the time frame in which they were produced.
Than you can ask about a specific shingle, produced during a specific time frame and get some accurate and creditable responses.
I installed roofs on several homes / small business's in the mid to late 90's using IKO products with -o- issues.
I know of at least two fellow roofers in these forums who install them on a regular basis with out issue.
So your search needs to be more specific.