What are the limitations or challenges of using PET Foam Board?

The primary limitation is cost, as it is generally more expensive than EPS and XPS due to its advanced manufacturing and recycled content. Availability can be more limited compared to ubiquitous polystyrene foams. While highly moisture-resistant, long-term UV exposure degrades it, requiring protective facers or finishes. As a vapor semi-permeable material, building science analysis is needed to ensure assembly drying, similar to other foam boards. Its long-term (50+ year) performance data in buildings is still being accumulated compared to more established materials.

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What are the limitations or challenges of using PET Foam Board?

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