Leave a 1 4 inch gap between the step flashing and wood siding or cement board.
Installation of step flashing behind lap siding.
Wide and 2 in.
It is always recommended to install step flashing behind stucco dryvit wood panel lap siding vinyl siding cedar shingle siding etc.
This has proven problematic over time as caulking the joint results in unsightly surface appearances due to the different textures as well as resulted.
Riley says most roofers use.
A common problem with cement board siding products and some other types of horizontal lap siding is that older installation guidelines called for caulking the joint instead of flashing the joint.
In certain instances flashing may need to be installed on the exterior of siding.
Flashing behind butt joints is an effective low maintenance way to comply with building code and help protect against water intrusion.
Nail j channel for vinyl or metal siding onto the flashing.
If the kick out and step flashing can t tuck behind the siding screw on cap flashing to cover it then caulk along the top.
However some local building codes may require different size flashing.
Extra things to remember when installing step flashing.
Install the step flashing before running the first row of shingles install a piece of step flashing along the sidewall so that it sits tightly against the roof.
Install step flashing with minimum 4 inch 102 mm upper leg.
Cut step flashing pieces to be 10 in.
Cover with cap flashing.
It is a good idea to use a harness so that less hazard appears.
Slip in the flashing.
Length to extend 5 in.
This allows each step flashing piece to overlap the piece below.
However in most instances step flashing should be installed behind siding.
Nail the metal siding onto flashing by following siding manufacturer directions for material installation.
Make sure that you remain cautious when you are on the roof.
Riley explains its easy to do when it comes to new construction.
Use housewrap flashing tape z flashing or other items as needed to maintain the counterflashing principle.
Do not extend the siding or trim into the kick out flashing or gutter.
Lift the bottom shingle and slip in the kickout flashing.
Alternatively use j channel nails for vinyl.
Properly integrate flashing with the secondary water resistant barrier.
Make sure that you leave a quarter of an inch gap between cement board or wood siding and step flashing.
Riley shows his way the only way how to install step flashing.
Bend the 10 in.
Nail it to the sidewall or glue it if nailing isn t possible.
Install siding on the walls down to the flashing.
James hardie recommends 6 inch wide flashing that overlaps the course below by 1 inch.
Step flashings are quite often improperly installed on the exterior of siding.
