Installing a railing on top of a rubber roof


Old 10-27-04, 01:12 PM
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Installing a railing on top of a rubber roof

[FONT=Arial]Hello everyone,

This is the deal:
I recently bought a hose that has an an upstairs door leading to a 10ft. x 12ft. section of flat roof outside.

Their insurance is requiring me to put a "railing" up on this section of roof (kind of like an upstairs deck).

Only 2 sides of the area need to have railing, the other 2 sides are up against sections of the house.
So essentially, I have a 12 ft. run, corner post , and then a 10 ft. run of railing.

The issue is that this section of roof has got rubber roofing on.
so I'm trying to determine the best way to secure this railing without compromising the integrity of the rubber roof material.
The rubber material looks to be in great shape, and it wraps over the edges and is secured on the outside edge with an aluminum runner.

Do I go straight through the top surface with lag bolts and just try to seal the heck out of everything??

Or do I try to secure the railing to the outside (vertical) edge of the house --- and if I do it this way, is there any guidelines that indicate how far away from the edge of the roof a railing has to be??

Thanks in advance for any replies.
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Old 10-27-04, 03:32 PM
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I would bolt it to the outside of the house with lag bolts,you dont want to
put holes in the roof.Because that is a flat roof, there should be a band
framing around the top to nail there ceiling joists too,thats what you will
bolt your hand rail posts to. I would go a foot below the roof with 3 lags.
in a row spaced evenly apart. code for hand rails are 36" from floor to
top of rail and rails should be 4 " from center to sure and run
a bead of chaulking on each side of the post where it gos down the side of the house and across the top where the post meets the roof .this will keep out water where you put in the lag bolts.Be sure and use salt treated lumber!
hope this helps
Old 11-02-04, 03:28 AM
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And, use rust proof bolts!
Old 11-02-04, 06:20 AM
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Also, if you plan to spend time on this flat roof for recreational purposes, you have to keep in mind that this type of roof surface was not designed for foot traffic.
You will need to install a deck that is placed on an insulating layer of some kind if you use this space as a balcony.

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