Hot sun and bare feet
Compare actual colors side by side in the intended exposure, especially during the hottest part of the day. Dark surfaces can become uncomfortable. Shade, timing of use and footwear can change the practical decision. Manufacturer temperature claims require the named comparator and conditions. Reflected sunlight from glazing can produce concentrated heat beyond ordinary sun exposure.
Pools and rainy decks
Texture alone is not a wet-slip guarantee. Ask for the applicable wet test, product identification and conditions, then consider sunscreen, algae, leaves and cleaning. Pool chemicals, salt exposure and permanent moisture can affect product and fastener suitability. Do not substitute a dry friction number for a wet-use assessment.
Humidity, freeze-thaw and snow
Keep water draining and ventilation paths open. Remove trapped debris at joints and around planters. Check the approved ice-melt and snow-removal guidance before using chemicals or metal tools. Movement gaps and attachment details need to follow the product and local conditions; copying a neighboring deck is not a specification.
Site-specific shortlist
For full sun, compare color and shade strategies first. For wet shade, emphasize cleaning access, drainage and documented traction. For coastal sites, include corrosion compatibility. For rooftop or low-clearance work, evaluate the full assembly, waterproofing and support details with the responsible designer.