# How do you build a rafter for a shed roof?

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## Can I use 2×4 for shed rafters?

You can use either 2×6 or 2×4 rafters for roofs with a 3/12 pitch or greater, but it depends on the overall size of your shed. For roofs that won’t experience heavy snow loads, a gable roof can span up to 22′ with 2×4 rafters.

## What size should shed rafters be?

The Skillion and Shed style roofs are framed with a single slope 2×4 or 2×6 (or thicker) rafters spanning from the low wall to the high wall. If you plan to have eaves to protect the shed walls, make sure you add the extra length when measuring the rafters.

## How do you determine the pitch of a shed roof rafter?

Remember that pitch is calculated as the height – or rise – of a roof pitch over 12 inches of horizontal run. Therefore, if your roof rises 4 inches over the course of 12 inches of horizontal run, then your roof pitch is 4:12.

## Can you build your own rafters?

You can also build your own trusses if you have the equipment, or can rent the equipment to install them. Piece-by-piece rafter/roof construction, however, is still the more common construction method for many buildings.

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## How far can a 2×4 Rafter span without support?

An interior 2×4 beam – made up of two 2x4s nailed together – can span up to 3′ 1” without support beneath a set of joists for a home no greater than 20′ wide and supporting no more than 1 floor. For homes that are 28′ wide, a double 2×4 can support a span of 2′ 8”.

## How thick should rafters be?

Use these two tables for roof rafters with a slope of 3″ in 12″ or less.

Nominal Size Spaced (o.c.) Species / Grade ( 40# Live Load – No Finished Ceiling)
2″ x 8″ 24 10-8
2″ x 10″ 12 19-3
16 16-8
24 13-7

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

2-grade 2×6 joists can span up to 10 feet 9 inches from beam to beam when spaced the standard 16 inches apart with a maximum live load of 30 inches per square foot.

## How much slope do I need for a shed roof?

Minimum Slope for Water Drainage

Anything with a slope of some kind will cause water to run off the roof. However, an ideal roof drop per foot should be at least one-eighth to one-quarter of an inch per foot. Anything less than one-eighth of an inch may pool on the roof.

## What is the cheapest way to roof a shed?

In most cases, MSR roll roofing is the cheapest shed roof material you can buy. Roll roofing is also the easiest shed roof to install because you can cover large areas quickly by simply rolling it out and nailing it down.

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## What does a 2 12 roof pitch look like?

A 2/12 roof slope means your roof has 2 inches of vertical drop for every 12 inches of horizontal distance. Simply put, it’s a shallow roof. … A roof this shallow is likely to be found on a ranch house, a shed dormer or a porch.

## How much should a shed roof overhang?

Overhangs can vary from a few inches to a few feet depending on preference; however, the suggested width of an overhang is between 12” and 18” for eaves and no more than 8” for rakes. That said, overhangs can extend as far as 2′ without the need for external supports.

## Which roof pitch is best?

For metal panel roof systems, NRCA recommends slopes of 1/2:12 or more for structural panel systems and 3:12 or more for architectural panel systems. For asphalt shingle, clay and concrete tile, metal shingle, slate and wood shake and shingle roof systems, NRCA recommends slopes of 4:12 or more.