PyReTect: An Eco-friendly Roofing Material as an Alternative to Corrugated Galvanized Iron Sheets

Document Types

Paper Presentation

Research Theme (for Paper Presentation and Poster Presentation submissions only)

Materials Engineering (MEN)

School Name

Juan Sumulong Memorial Junior College

Track or Strand

Science, Technology, Engineering, and Mathematics (STEM)

Research Advisor (Last Name, First Name, Middle Initial)

Robles, Jemaima M.

Start Date

23-6-2026 1:30 PM

End Date

23-6-2026 3:00 PM

Zoom Link/ Room Assignment

DLSU Manila Campus (In-person) - Brother Andrew Gonzalez Multipurpose Hall, 20th floor

Abstract/Executive Summary

In the Philippines, traditional corrugated galvanized iron (CGI) sheets are the most prevalent roofing material; however, they often exceed the safety temperature thresholds, leading to prolonged thermal discomfort and associated health risks that necessitate sustainable alternatives. To mitigate excessive heat accumulation, this study developed PyReTect: an eco-friendly roofing material that provides thermally efficient solutions for the local climate, in alignment with SDGs 9, 11, 12, and 13. It integrates local agricultural by-products—bamboo fibers (BF), rice husks (RH), and coconut coir (CC)—with a constant binder of 11% polymeric diphenylmethane diisocyanate (pMDI). Furthermore, the effectiveness of PyReTect was evaluated across two distinct formulations: Ratio 1 (40% BF, 50% RH, 10% CC) and Ratio 2 (50% BF, 40% RH, 10% CC) to determine the optimal mass ratio. Assessment results revealed that both successfully complied with the ASTM, UL, PNS, ISO, and PNS ISO standards for thermal, mechanical, and physical properties. While Ratio 1 exhibited superior thermal resistance (0.520 m²•K/W), drastically surpassing traditional CGI sheets (0.00001 m²•K/W), Ratio 2 was determined as the optimal mass ratio, whereas the increased integration of bamboo fibers provided the structural reinforcement essential for roofing performance. PyReTect’s overall eco-friendliness was assessed through the Life Cycle Assessment (LCA) using IMPACT 2002+ and Ecological Footprint methods. The evaluation of the production phase further demonstrated that PyReTect yielded reduced carbon footprints and a decreased environmental burden in contrast to traditional CGI sheets. These results validate PyReTect as an eco-friendly alternative roofing material to corrugated galvanized iron sheets.

Keywords

eco-friendly roofing; agricultural by-products; thermal resistance; life cycle assessment; bio-composite

Statement of Originality

yes

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Jun 23rd, 1:30 PM Jun 23rd, 3:00 PM

PyReTect: An Eco-friendly Roofing Material as an Alternative to Corrugated Galvanized Iron Sheets

In the Philippines, traditional corrugated galvanized iron (CGI) sheets are the most prevalent roofing material; however, they often exceed the safety temperature thresholds, leading to prolonged thermal discomfort and associated health risks that necessitate sustainable alternatives. To mitigate excessive heat accumulation, this study developed PyReTect: an eco-friendly roofing material that provides thermally efficient solutions for the local climate, in alignment with SDGs 9, 11, 12, and 13. It integrates local agricultural by-products—bamboo fibers (BF), rice husks (RH), and coconut coir (CC)—with a constant binder of 11% polymeric diphenylmethane diisocyanate (pMDI). Furthermore, the effectiveness of PyReTect was evaluated across two distinct formulations: Ratio 1 (40% BF, 50% RH, 10% CC) and Ratio 2 (50% BF, 40% RH, 10% CC) to determine the optimal mass ratio. Assessment results revealed that both successfully complied with the ASTM, UL, PNS, ISO, and PNS ISO standards for thermal, mechanical, and physical properties. While Ratio 1 exhibited superior thermal resistance (0.520 m²•K/W), drastically surpassing traditional CGI sheets (0.00001 m²•K/W), Ratio 2 was determined as the optimal mass ratio, whereas the increased integration of bamboo fibers provided the structural reinforcement essential for roofing performance. PyReTect’s overall eco-friendliness was assessed through the Life Cycle Assessment (LCA) using IMPACT 2002+ and Ecological Footprint methods. The evaluation of the production phase further demonstrated that PyReTect yielded reduced carbon footprints and a decreased environmental burden in contrast to traditional CGI sheets. These results validate PyReTect as an eco-friendly alternative roofing material to corrugated galvanized iron sheets.

https://animorepository.dlsu.edu.ph/conf_shsrescon/2026/BoA_MEN/5