How To Tie In A Flat Roof With A Shingle Roof

After the addition roof is framed and sheathed snap a line on the existing roof shingles 2 in.

How to tie in a flat roof with a shingle roof.

Flashing and more roofing compound are used to weatherproof the. The flat roofing material must go up the wall a minimum of 12 or up the wall and over the top of the wall if the wall is less than 12 high. The roofing cement will resist possible leaks overnight. On a two story house you can usually tie the ledger into a band joist also called a rim joist located between the floors as shown below.

The roof needs to be tied in by lifting up some of the original tiles on the existing roof and then allowing the flat roof to run slightly underneath. Here is an attempt though maybe not a very good one to make the roof flashing serve also as a through the wall flashing with a tile roof. Ensure it sits flat and extends at least 8 inches above the shingles. Step 4 tie the roof in.

Drip edge metal valley flashing dormer chimney and kickout flashing are types of roof flashing that shed water away from the connections between roofs walls chimneys and other building assemblies. After this roofing cement is applied around the complete area and then the missing tiles are replaced. If attaching a patio roof to a ledger beneath the eaves does not allow for enough headroom you can set the new patio roof s rafters on the wall s top plate. Hold the end of a chalk line at one of the outermost top corners of the carport roof frame.

A very important detail is where the flat roof is connecting the pitch roof. The starter strip and first row of shingles must be applied 25 cm from the bottom of the slope roof or main roof above the slope transition. Roof shingle over step flashing. Armourfix and armourvalley membranes must be installed and extended 60 90 cm up the main roof underneath the shingles in order to assure a waterproof connection.

Bend the corner flashing tightly around the corner. String the line along the top of the frame until it meets the shingle roof. Up from the valley center and cut through the shingles and underlayment. Nail it in place with two nails one on each side of the top edge.

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