Similar to our polycarbonate option, metal sheets can be added on top of the regular wood slats to give strong protection against rain and sun. These plastic-like panels can be added on top of the wood slats to offer added protection from rain and sun. The wood slats have a clean look, and can compliment almost any style of home. Roof pitch between 30 and 45 degrees with rafter spacing strength class C16. Our standard pergola comes with wood cross slats that provide a small amount of shade protection. What size should pergola rafters be Pergola rafter size:- typically the rafters size used for pergola could be 2×6 (2 inches by 6 inches), 2×8 (2 inches by 8 inches). Our pergolas can be built with one of three roofing options: Wood Slats: Contact us for options and pricing on custom options.
Adding more or larger top slats will produce more shade. Along with the rafters, the top slats will help to produce shade. Pressure treated pine will come with 2×4 top slats and cedar will come with 2×2 slats. Pergola Rafter Spans for 600 mm and 900 mm Spacing - (Wind Classification N1 & N2). Top Slats – 2×2 or 2×4 lumber depending on wood type. Because of the angle of the sun at most times of the day, its actually the vertical height of the rafter (8 inches in a 2×8) that is most important in determining the amount of shade that you get from your pergola. Setting Posts: First establish post spacing and embedment depth. Rafter Cross Section (mm) Maximum Raf-ter Span (mm) Maximum Overhang (mm) 100 x 50 150 x 50 200 x 50 1800 4800 Beam spacing set to 1.8m. The rafters on a pergola are responsible for the majority of the shade and that is why it is important that they are spaced close and made from larger wood. and the beam spacing is set to 1.8m, then max rafter span VKRXOGEH PSOXVDGRXEOHRYHUKDQJRI PPIRUD total rafter length of 4.8m.
The rafters run opposite from the beams and are spaced at 12” on center. Rafters – 2×6 or 2×8 depending on the size of the pergola. The beams will hang out approx 12 inches past the edge of the post and will be the support for the rafters. There is one double-beam on each side of the pergola. The posts are either attached to existing patio with 3 inch concrete anchors, or set in concrete in the ground (approximately 24” deep.)īeams – 2×8 or larger, depending on size of the pergola. Posts – 6×6 lumber is standard, but can be upgraded to bigger 8×8 posts for an additional fee.
Our standard pergola design includes 4 main parts:
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