Installing cork in an uncovered outdoor area is not recommended for a long term surface.
Humidity changes and UV light will negatively affect cork, like any wood product..
Suberra makes a solid 100% recycled cork counter top.This could be a possibility.
- Because it is a solid product, it could better withstand an unconditioned area - like a three season room or covered porch.
- I recommend sealing it with a UV resistant polyurethane coating for moisture and water protection.
For more information:
Read "Is cork laminate a realistic option for a kitchen countertop?" a Q&A answered byMarc Ojanen & Shen-I Chiou.