How To Attach Railing Posts On A Flat Roof
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Roofing contractors normally don t want to deal with the installation of post and railings.
How to attach railing posts on a flat roof. Once the plate and rod are installed i stand the post in place. Staggering the holes avoids splitting the post along the grain lines. For handrails at one or more edges. 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.
When wooden posts are used for railing it is best to go with pressure treated 4 x 4 posts. Drill holes the same diameter as the carriage bolts you will use. Normally a carpenter is best suited for this job. Snap chalk lines on the roof that define the line of the handrails.
How to attach railing posts to a flat roof. 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. 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.
These posts should be fastened to the rafters with bolts and nuts. Here we show posts for a 36 inch tall railing which is common. Access the roof using an extension ladder. 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.