Installation Of Step Flashing Behind Lap Siding

Bend the 10 in.

Installation of step flashing behind lap siding.

It is always recommended to install step flashing behind stucco dryvit wood panel lap siding vinyl siding cedar shingle siding etc. Cut step flashing pieces to be 10 in. Leave a 1 4 inch gap between the step flashing and wood siding or cement board. The roofing felt should be installed before you start tin.

Nail it to the sidewall or glue it if nailing isn t possible. Longer than the shingle s exposure. Riley says most roofers use. Slip in the flashing.

Flashing behind butt joints is an effective low maintenance way to comply with building code and help protect against water intrusion. However in most instances step flashing should be installed behind siding. Properly integrate flashing with the secondary water resistant barrier. Nail the metal siding onto flashing by following siding manufacturer directions for material installation.

Riley shows his way the only way how to install step flashing. Install step flashing with minimum 4 inch 102 mm upper leg. Make sure that you remain cautious when you are on the roof. Length to extend 5 in.

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. Do not extend the siding or trim into the kick out flashing or gutter. Riley explains its easy to do when it comes to new construction. Install siding on the walls down to the flashing.

Step flashings are quite often improperly installed on the exterior of siding. This allows each step flashing piece to overlap the piece below. It is a good idea to use a harness so that less hazard appears. James hardie recommends 6 inch wide flashing that overlaps the course below by 1 inch.

Make sure that you leave a quarter of an inch gap between cement board or wood siding and step flashing. Alternatively use j channel nails for vinyl. However some local building codes may require different size flashing. 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.

Extra things to remember when installing step flashing. Cover with cap flashing. Nail j channel for vinyl or metal siding onto the flashing. In certain instances flashing may need to be installed on the exterior of siding.

This has proven problematic over time as caulking the joint results in unsightly surface appearances due to the different textures as well as resulted. Use housewrap flashing tape z flashing or other items as needed to maintain the counterflashing principle. 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.