How To Build A Sloped Roof Over A Flat Roof

Nail an aluminum drip edge in place before shingling the sloped roof.

How to build a sloped roof over a flat roof.

Eventually water penetrates the building. Of course you don t need to live in a modern house to deal with a flat roof. For the closure strips that are in the middle of your pergola roof put a screw in every third raised section. Mauerlat must be fixed with the help of anchor bolts wires or plugs.

When it comes to the disadvantages some property owners are being pestered by leaks. Place it at the ends of the outer wall on the pre fixed waterproofing material. Once you ve determined the measurements you need mark them directly onto a series of 2 in 5 1 cm x 4 in 10 cm or 2 in 5 1 cm x 6 in 15 cm boards using a carpenter s pencil. For the strips that run along the outside edges of your pergola roof put a screw in every other raised section.

Roofs with a slope of 1 to 3 inches of fall to 12 inches of run should use rolled roofing. It s similar to a shed or lean to roof or a clerestory roof but has one visible difference. The rafters on a steeply sloped roof for instance will be much longer and have more end cuts than those on a flat roof. Flat roofs aren t architecturally logical as rain and snow will shed much more quickly off a sloped roof.

Yet for historic modern style buildings like this old house s cambridge tv project flat roofs are at the core of the architecture meant to reflect the broad horizontal lines of the natural landscape. It has a greater slope. The phased installation of how to build a slanted shed roof comprises the following steps. At the first stage the mauerlat is installed.

Then screw in the screws with rubberized washers using the socket bit. Add an ice and water barrier over the sheathing and along the eaves and you are ready for your first layer of shingles. Apply cdx 5 8 in. Slopes above 3 inches fall to 12 inches run can use shingles.

Build a stud frame wall at the high end of the proposed roof structure. Anchor the wall to the existing roof deck. This creates a solid foundation. Unlike sloped roofs flat roofs are susceptible to ponding water.

Water that stays on a flat roof after it rains will weaken the material over time. Flat roofing systems come with benefits and drawbacks.