Lean To Roof Wall Plate Detail

The ceiling joists span from wall plate to wall plate and are sometimes bolted to the rafters to help stop the ridge dropping and the roof rafters spreading.

Lean to roof wall plate detail.

The lower end is done the same way a skillion or shed roof is. This detail for cmu installation only. Downspout strap detail 1 4 dia. In this lean to roof the upper part of the common rafters is located on a wooden wall plate and also placed with corbel.

Roof wall junctions can be classed as simple such as a standard horizontal apron flashing see a in figure 82 or complex such as where the previous apron flashing terminated within the. This corbel is made from stone brick or iron. The rafter is cut so it sits down onto the wall plate which is in turn fixed down onto the inside skin of a cavity wall. Good detailing of the roof wall junction for lean tos is important for the weathertightness of a building but this junction can present some challenges.

Notch a birdsmouth where it sits on the low wall and extend it past the wall for the eaves. To fix the joists and rafters down on to the wall plates they should be toe or skew nailed to the top plate like below. Space rafters either 16 o c. The joist completes the strong triangle shape with the rafters.

X 5 8 bolt brass alum. Unless you re careful step flashing can allow water from the roof to slip behind the gutter and get behind the siding and even the housewrap. A key part of my approach is using a special piece of flashing at this. A common problem area is the point where a gutter dies into an adjoining wall as the photo below illustrates.

That lip is then set into a reglet or groove in this case cut into the mortar joint of the brick wall above. A lean to roof just means it s attached to an existing structure. Lean to roof is a free standing structure. The wall of one side is taken higher than the wall on the other side.

Design lean to roof per your local building codes. Detail for attachment to metal panel siding or fascia. To install the roof wall flashing above the builder bent the top edge of the flashing into a 90 degree lip about 2 cm in width. The exterior of a house presents plenty of opportunity for leaks.

For shingles or 24 o c. The high end of the rafter sits on or attaches to a ledger plate attached to the existing wall.