# Is PETG good enough for outdoor use?

PolyLite PETG's heat-deflection temperature is 78 °C (172 °F) at 0.45 MPa and 75 °C (167 °F) at 1.8 MPa. PolyLite ASA on the same check is 103 °C (217 °F) and 100 °C (212 °F). No row here stores a UV-hours figure. A score-2 comment says PETG is the likely answer after sun warped PLA. That is the comment, not a weathering test.

PolyLite PETG's heat-deflection temperature is 78 °C (172 °F) at 0.45 MPa and 75 °C (167 °F) at 1.8 MPa. PolyLite ASA on the same check is 103 °C (217 °F) and 100 °C (212 °F). No row here stores a UV-hours figure. A score-2 comment says PETG is the likely answer after sun warped PLA. That is the comment, not a weathering test.

Outdoor use is heat plus sunlight, and these rows only publish the heat. [What people use outdoors](/answers/outdoor) already puts ASA ahead of PETG for sun and keeps PETG as the cooler print. [PLA outdoors](/answers/pla_outdoor) is the material the comments here actually worry about. [ASA printing](/answers/asa_print) is the setup if you step up to that nozzle.
## Heat deflection, not a year count

[PolyLite PETG](/brand/polymaker/polylite-petg) lists 220–250 °C (428–482 °F), a bed of 70–90 °C (158–194 °F), and drying at 65 °C (149 °F) for 6 h. Checked for drying 18 October 2026. The heat dataset, checked 21 October 2026, lists 78 °C (172 °F) at 0.45 MPa and 75 °C (167 °F) at 1.8 MPa, ISO 75. [Prusament PETG](/brand/prusament/petg) lists 240–260 °C (464–500 °F), a bed of 70–90 °C (158–194 °F), and speed up to 200 mm/s. Its drying cell is 55 °C (131 °F) for 6 h from Prusa's drying article, stored as a material default, checked 18 October 2026. [PolyLite ASA](/brand/polymaker/polylite-asa) lists 230–260 °C (446–500 °F), a bed of 75–95 °C (167–203 °F), and drying at 70 °C (158 °F) for 7 h. HDT is 103 °C (217 °F) at 0.45 MPa and 100 °C (212 °F) at 1.8 MPa, checked 21 October 2026.

None of the three stores a UV exposure time. The order is the question's order. It is not a claim that PETG lasts a few years.
## What the community says

[a Reddit thread in r/BambuLab](https://www.reddit.com/r/BambuLab/comments/1qkur7n/) says 80f and direct sunlight can warp PLA.

[a Reddit thread in r/BambuLab](https://www.reddit.com/r/BambuLab/comments/1qkur7n/): A comment says PETG will likely be the answer, and that black PLA spiders in a Boston October were fine under a porch.

Updated 2026-10-25. Sources accessed 2026-10-25. Use case: Outdoor.

## Ranked filaments

| Rank | Filament | Nozzle | Bed | Price per kg |
| --- | --- | --- | --- | --- |
| 1 | Polymaker Polylite PETG | 220–250 °C (428–482 °F) | 70–90 °C (158–194 °F) | — |
| 2 | Prusament PETG | 240–260 °C (464–500 °F) | 70–90 °C (158–194 °F) | — |
| 3 | Polymaker Polylite ASA | 230–260 °C (446–500 °F) | 75–95 °C (167–203 °F) | — |

## Sources

- [Polymaker PolyLite PETG technical data sheet](https://cdn.shopify.com/s/files/1/0548/7299/7945/files/PolyLite_PETG_TDS_EN_V5.4.pdf) (datasheet)
- [Polymaker PolyLite ASA technical data sheet](https://cdn.shopify.com/s/files/1/0548/7299/7945/files/PolyLite_ASA_TDS_EN_V5.4.pdf) (datasheet)
- [Prusa Knowledge Base, drying filament](https://help.prusa3d.com/article/drying-filament_332086) (manufacturer)
- [Prusament PETG technical data sheet](https://www.prusa3d.com/file/3464616/prusament-petg-technical-data-sheet.pdf) (datasheet)
- [a Reddit thread in r/BambuLab](https://www.reddit.com/r/BambuLab/comments/1qkur7n/) (reddit)
- [a Reddit thread in r/3Dprinting](https://www.reddit.com/r/3Dprinting/comments/12zcho8/) (reddit)
- [a Reddit thread in r/3Dprinting](https://www.reddit.com/r/3Dprinting/comments/1wuek4d/) (reddit)
- [a Reddit thread in r/BambuLab](https://www.reddit.com/r/BambuLab/comments/1w7i8i6/) (reddit)
- [a Reddit thread in r/3Dprinting](https://www.reddit.com/r/3Dprinting/comments/1e7hafq/) (reddit)

HTML: https://filamentfacts.com/answers/petg_outdoor