A polycarbonate carport canopy protects a car from sun and hail while letting light through. Choose the wrong sheet – too thin, no UV layer, the wrong wall – and the roof will sag, yellow or fail under hail. This guide is the spec basics for polycarbonate carport sheet, and how RP River People supplies PC canopy glazing.
Thank you for reading this post, don't forget to subscribe!A case worth following: the residential carport build
A homeowner built a two-car carport and specified polycarbonate roof panels. The roof used 10 mm twin-wall sheet, UV co-extruded, spanning the steel posts with proper expansion gaps. Because the carport polycarbonate was thick enough and UV-protected, the canopy stayed cool, resisted hail and let the driveway stay bright – and the sheet did not yellow through its first summers.
Why polycarbonate for carport canopies
- Impact resistance – stands up to hail, falling branches and debris.
- UV protection – co-extruded UV layer stops yellowing and protects the car beneath.
- Light control – translucent panels cut glare while letting daylight through.
- Insulation – twin-wall structure moderates heat under the canopy.
- Weight – lighter than glass, easier to install on a simple frame.
What to specify: wall type, thickness and tint
- Wall: twin-wall for roofs; solid sheet for smaller canopies or maximum clarity.
- Thickness: twin-wall 8-10 mm typical; solid sheet 5-6 mm and up.
- UV layer: always co-extruded on the exposed face.
- Tint: clear, bronze, grey or opal to control light and heat gain.
- Size: cut to purlin spacing with an expansion allowance.
Installation notes that prevent sag and leaks
- Support at the manufacturer’s recommended purlin spacing to avoid flutter and sag.
- Leave an expansion gap on length – PC moves more than metal and glass.
- Use UV-stable sealing profiles and cap the cut edges.
- Orient the UV-coated face upward/outward.
- Detail roof pitch and drainage so water runs cleanly to the eaves.
Market pain points – and our solution
Canopy buyers get burned by thin sheet that sags between posts, UV layers on the wrong side, no expansion allowance in cutting, and yellowing within a season. RP River People, as a polycarbonate sheet manufacturer, supplies twin-wall and solid polycarbonate carport sheet with co-extruded UV protection, in the thickness, tint and size your canopy needs, cut cleanly and packed for easy install.
Frequently Asked Questions
Q: Should a carport use twin-wall or solid polycarbonate?
Twin-wall suits larger, insulated, rigid roofs; solid sheet suits smaller canopies and clearer light. Confirm with span, load and tint targets.
Q: Will polycarbonate carport sheet yellow in the sun?
Quality PC with a co-extruded UV layer resists yellowing for many years. The UV face must face outward.
Q: Do you supply polycarbonate carport sheet cut to size?
Yes. We supply twin-wall and solid polycarbonate carport sheet in the thickness, tint and size you need, cut to purlin spacing with clean edges and export packing.
If you are specifying polycarbonate carport guide for a project, send us your sizes and requirements. Contact us for a quote and we will confirm grade, thickness, tolerance and lead time: oversales@rpplexiglass.com.