How To Slope Existing Roof

If you need to find the pitch of an existing roof all you need is a level and a tape measure.

How to slope existing roof.

Where new construction meets an existing sloped roof the geometry of the roof framing can be a daunting mathematical puzzle. Then in the attic place the end of the level against the bottom of a roof rafter and hold it perfectly level. Also the appearance of a flat roof may not be desirable for a residential home. Here are a few methods to easily find the roof slope on your existing shed.

Rather than a single slope a gable roof consists of two slopes that meet at a peak running down the middle of the roof. Tying patio roof into existing house carpentry tying patio roof into existing house carpentry 18. A flat roof can often have pooling water that can lead to leaks. First measure 12 inches from one end of the level and make a mark.

Using 48 carpenters level and measuring tape. How to join into a sloped roof. Attaching near the eaves the. The standard pitch of most residential roofs ranges between 4 in 12 and 9 in 12.

Now measure vertically from the 12 inch mark on the level straight up to the underside of the rafter as illustrated. However laying out the framing of the. Attach patio roof existing house 15. Sometimes we need to know our existing roof pitch to install new roofing material or for building inspection.

Calculating roof slope is done by calculating the number of inches your roof slope rises vertically for every 12 inches it extends horizontally. Place the level horizontally along the rafter until it contacts the roof sheathing avoiding any protruding roof nails. Things can green your existing roof general. Attaching patio cover existing roof attaching patio cover existing roof 16.

If you prefer the look of shingles over tar a pitched roof may also be an option for you. Pitching a flat roof can let you add an attic or second floor with slanted ceilings. 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. 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.

For example if your roof rises 7 inches for every 12 inches of horizontal run then your roof has a 7 in 12 pitch. Working from the interior side of the roof you ll need access to a roof rafter to measure the pitch. Go on your roof and put one corner of the level on your roof then bring it up so it is level with the earth.