When complaints arise regarding IKO shingles, they rarely indicate a widespread, systemic manufacturing defect and are usually tied to improper installation techniques, insufficient attic ventilation, or premature granule wear caused by severe localized weather events. A small number of critics or contractors occasionally note that certain budget-tier shingle lines feature lighter physical weights compared to ultra-premium competitors, emphasizing that proper adherence to manufacturer installation guidelines is critical to preventing wind-uplift issues.
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