How To Slope Existing Roof

Working from the interior side of the roof you ll need access to a roof rafter to measure the pitch.

How to slope existing roof.

The standard pitch of most residential roofs ranges between 4 in 12 and 9 in 12. Tying patio roof into existing house carpentry tying patio roof into existing house carpentry 18. Then in the attic place the end of the level against the bottom of a roof rafter and hold it perfectly level. Where new construction meets an existing sloped roof the geometry of the roof framing can be a daunting mathematical puzzle.

A flat roof can often have pooling water that can lead to leaks. Attaching near the eaves the. For example if your roof rises 7 inches for every 12 inches of horizontal run then your roof has a 7 in 12 pitch. Here are a few methods to easily find the roof slope on your existing shed.

Attaching patio cover existing roof attaching patio cover existing roof 16. Replacing a roof can be expensive but if a roof contains only a small slope it s possible to raise the roof pitch of a house by building a roof over the old one. Things can green your existing roof general. If you prefer the look of shingles over tar a pitched roof may also be an option for you.

However laying out the framing of the. When matched to the angle and proportions of other rooflines on the house your gable roof will add visual interest and character to the home making the addition look like an asset that belongs with the house. Now measure vertically from the 12 inch mark on the level straight up to the underside of the rafter as illustrated. Calculating roof slope is done by calculating the number of inches your roof slope rises vertically for every 12 inches it extends horizontally.

How to join into a sloped roof. Sometimes we need to know our existing roof pitch to install new roofing material or for building inspection. Attach patio roof existing house 15. Using 48 carpenters level and measuring tape.

First measure 12 inches from one end of the level and make a mark. Attaching girder truss existing roof building attaching girder truss existing roof building 17. If you need to find the pitch of an existing roof all you need is a level and a tape measure. In any case the structure that the shed roof is leaning on is an existing roof typically a gable roof with a ridge and a steeper slope than that of the shed roof.

This new roof with a higher pitch can be accomplished with premade roof trusses and typical asphalt shingles. Place the level horizontally along the rafter until it contacts the roof sheathing avoiding any protruding roof nails. Rather than a single slope a gable roof consists of two slopes that meet at a peak running down the middle of the roof.