Note: Depending on the length and the overall size of the rafter, the load-bearing requirement, and availability of various materials from suppliers, we may substitute the 1 x 3 Aluminum Bars with Fibreglass Rods, galvanized steel C-Channel Joist, or larger Aluminum Bars. For spans over 16 feet, we recommend additional support Posts in between. This holds true for Rafters up to 16 feet long. We have not conducted engineering tests for load-bearing capacities, but are extremely confident that the rafters with 1 x 3 Aluminum Bars or Tubes inside will not sag under the weight of other rafters.
PVC rafters eight feet or longer are reinforced with an Aluminum Bar. Rafters 8 feet or less in length, are made hollow and work well without any rigid structure, as shorter lengths typically do not carry the weight of additional rafters. The drawback is that PVC is not rigid and longer lengths tends to sag over time. PVC is the ideal weather-resistant material for Pergola Rafters. Rafters are UV resistant and do not require painting for protection but readily accept paint to suit your colour pallet. They are weather-resistant, and will not warp. Made from CertainTeed or Versatex Cellular PVC that can be cut, shaped, fastened and finished using standard carpentry tools.
The four sides of the rafters end up perfectly smooth with no open pores where dirt may build up. Our rafters do not require painting as we make them by cutting, folding and laminating four panels of PVC. 10" PVC Pergola Rafter - The true size is 1 ½" thick x 9 ¼" tall in various lengths.
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