How To Attach Railing Posts On A Flat Roof

When wooden posts are used for railing it is best to go with pressure treated 4 x 4 posts.

How to attach railing posts on a flat roof.

Uncured rubber will flex enough to allow you to either seam it to the edpm rubber deck or attach it directly using adhesive meant for rubber. A threaded rod between one plate screwed to the framing and another plate at the top of the post firmly connects a hollow newel to a rooftop deck. How to attach railing posts to a flat roof. Once the plate and rod are installed i stand the post in place.

These posts should be fastened to the rafters with bolts and nuts. A schematic diagram of a post on a roof. Normally a carpenter is best suited for this job. Access the roof using an extension ladder.

Cut the post to the desired height of the railing the width of the framing you will attach it to and the thickness of the decking minus the thickness of the top cap if there will be one. Drill holes the same diameter as the carriage bolts you will use. Mark for two holes in the posts that are each 1 inch from opposite sides of the post and 1 1 2 inches from the top or bottom of the joist. Measure from the edges of the roof and mark the line of the handrails at several points.

To counterflash the uncured rubber you can either kerf the post and counterflash using copper or aluminum or box in your post thereby covering the post and rubber. Usually some scribing and fitting are needed to make it stand plumb without wobble or lean. For handrails at one or more edges. Roofing contractors normally don t want to deal with the installation of post and railings.