We occasionally receive requests for fall protection guard rail systems to be used on pitchd roofs. Our permanent guard rail system can be customized for many applications, and we’ve used it on roofs with a surprising degree of pitch (or slope).
For roofs with very minor pitched roof work platform, our non-penetrating Portable Guard Rail system can be used as is. This will work for roofs with a pitch of 0 to 1 (or 1/12 — for every 12 feet of horizontal length, the roof rises vertically 1 foot, for a pitch angle of 4.76 degrees).
For pitched roof work platform of 1-2, we recommend a customized, fixed guard rail. These permanent guard rails have angled posts to keep the rails vertical, are drilled into the roof to prevent the rail from slipping or tipping, and have a toe board (or “toe rail”). OSHA requires a 3″ toe board on flat roofs whenever there is a possibility of tools being kicked off the roof and onto people below. For permanent guard rails for use on a pitched roof work platform, we use an 8″ high toe board that is strong enough to withstand the impact of a sliding body.

For roofs with a pitch between 2 and 4, most fall protection companies recommend a fall protection tie-off system. OSHA regulations require a tie-off system for all roofs with a pitch of 4/12 and greater.
We have, however, created permanent guard rail systems for pitches much steeper than 4/12. In one unique example (shown here), an older building with a pitch of 12/12, or 45 degrees, a tie-off system was not practical. There was an unusual amount of equipment on the roof and limited installation options, and the owner felt that a tie-off system would make it difficult to manoeuvre around the machinery. He asked for a guard rail around the edge of the roof so that workers could access equipment by travelling around the eaves.
We have over 30 years of experience designing and installing fall protection guard rail systems and have the customization capability to accommodate all your application needs. We are a single source, turnkey provider committed to keeping your workers safe and your facility compliant. To learn more about customized fall protection guard rail systems for all types of roofs and applications, or to request a quote, contact us for more information.
