How far can a 2×6 span on a pergola?

A 2×6 spaced 16 inches apart can span a maximum distance of 13 feet 5 inches when used as a rafter, 10 feet 9 inches when used as a joist, and 6 feet 11 inches when used as a deck beam to support joists with a 6-foot span.

How far can pergola rafters span?

Spacing of the rafters will vary according to your visual preference and the size of the pergola. Spacing the rafters 16 to 20 inches apart is common. The most important rule in spacing is to keep the distance consistent between all the rafters.

How far can a 2×8 pergola Rafter span?

Depending on various factors, the maximum span for a 2×8 floor joist is 16′ 6”. The maximum span for roof rafters is 23′ 9”. For headers, the maximum span is 11′ 2”.

How do you secure a rafter on a pergola?

Quote from the video:
Quote from Youtube video: The first thing you're gonna want to do is check your plans. And determine how many rafters you have in this case. We've got a 10-foot wide pergola roof that has four rafters.

Can you use 2×6 for roof rafters?

2×6 shed roof rafters are enough for nearly any type of shed a homeowner wants to build. While a 2×6 might be nearly double the cost of a 2×4, you can likely space the 2x6s further apart, negating the added expense of increasing your lumber width.

How far can a 2×6 rafter span without support?

The maximum distance a 2×6 can span, according to the 2018 IRC, for a floor joist, is 12′-6”, ceiling joist 20′-8”, rafter 18′-0”, deck board 24”, deck joist 9′-11”, deck beam 8′-3”, and 6′-1” as for header.

Should you notch pergola rafters?

You will need to notch out this area so that the board fits over the support beams. Take your board down and using your marks as guides draw a rectangle where the notch is to be.

What is the best height for a pergola?


The minimum height of a pergola should be no lower than 7’6” to provide enough head room, though most projects call for a range of 8-10′ in height. A lower ceiling feels right-sized for intimate gatherings, while a larger roof is more in scale with a larger structure.

How far can a pergola beam span without support?

Although it depends on the species and grade of wood. As per thumb rule, for a pergola beam, 2″×12″ size timber you can span it upto 20 feet, 2×10 can span upto 16 feet, 2×8 can span upto 12 feet, 2×6 can span upto 10 feet and 2×4 can span upto 6 feet.

Which way should pergola rafters run?

For optimal morning and afternoon shade coverage, it’s best to ensure a traditional pergola’s beams orient north and south, with an angle toward the east. The easiest way to do this is by first identifying true north.

What wood should I use for a pergola?

Western Red Cedar and Redwood are the two most commonly used woods for pergolas, aside from pressure-treated wood. Western Red Cedar (WRC) and Redwood are both naturally stunning woods and often lumped together.

How far apart are the slats on a pergola?

The 1 1/2 x 1 1/2 shade slats are designed to be installed with 8 3/8” spacing between each slat. Shade slats are designed to extend approximately 8 1/4” past the last rafter. Measurement includes the pre-installed pergola ends. Your goal is to ensure that all the shade slats overhang equally to the eye.

What size should pergola rafters be?

Geoff, a builder friend, once said that for a smaller sized pergola, with 4″ x 2″ rafters, the pergola beam span should be no bigger than the width of a standard fence panel, or 6ft. Good advice! Try to keep as near to that as possible.

How wide should pergola slats be?

Top Slats – 2×2 or 2×4 lumber depending on wood type. Pressure treated pine will come with 2×4 top slats and cedar will come with 2×2 slats. Along with the rafters, the top slats will help to produce shade. Adding more or larger top slats will produce more shade.

What size timbers do I need to build a pergola?

For the uprights you will need at least 75mm x 75mm (3” x 3”) timber, and 100mm x 100mm (4” x 4”) is better if it is to be a sizeable structure. The uprights need to be around 3m (10ft) long, as they will need sinking into the ground by 0.5m (2ft) to give a firm foundation.

How much weight can a pergola hold?

The amount of weight a pergola can hold will vary depending on the quality of the wood and frame design, but it’s typically safe to say that a pergola can handle at least 300lbs. Of course, you will need strong chains and attachments that will support that weight as well.

How do you measure pergola rafter spacing?

If your pergola is an even number of feet wide, you find the center point, measure six inches to either side and place your first rafters there. Then you’ll place subsequent rafters a foot off center from those rafters until you reach the end, for a total number of nine rafters that stop a foot short of the edge.

How much space do you need between roof rafters?

Standard industry roof rafter spacing is 12”, 16”, 19.2”, and 24” on-center, however other spacing may be used by a Structural Engineer. Depending on all contributing factors though, 16” and 24” are commonly used for most buildings. The wider the space between rafters often results in rafters of greater depth too.