Roofs and Hurricane Preparedness

With hurricane season coming into full swing at the end of the month, most facility managers and building owners in Florida have one eye on the news hoping that another 2004 hurricane season is not upon us. Rather than wait until a storm is on the radar and there is little to no time to prepare, now is the perfect time for managers to think about their roofs. A study from The Roofing Industry Committee on Weather Issues (RICOWI) and information released by the Asphalt Roofing Manufacturers Association (ARMA) examine the weaknesses in roofs during hurricane conditions and outline the necessary steps to prevent severe damage in the future.

The Causes Of Roof Failure
Installation practices are often the reason that roofs do not perform. The RICOWI study examined roofs after the 2004 season, which included the destructive hurricanes Charley and Ivan. Its findings revealed the defects in installation. “Failure of roofing systems resulted from vulnerability at the perimeter and punctures and tears from debris,” says David Roodvoets, wind event coordinator for Houston, TX-based RICOWI. “The attachment to the deck could not resist the loads created when the perimeter securement failed, which led to progressive loss of membrane coverage.” The study found that roofs designed after 1992’s devastating Hurricane Andrew performed well unless there were installation problems. These include internal pressurization from openings (typically created by failed accessories); perimeter detachment; and corrosion
issues. As Andre Desjarlais, member of the RICOWI team, clarifies, “If you can’t hold the edge down, no matter what kind of roof you have, the whole thing is going to come down. The issue of fastener corrosion was seen over and over again.” When high speed winds entered buildings through these spaces, roofs were compromised.

Preparation For 2012
Careful installation practices can make a significant difference in a roof’s hurricane preparedness. According to the RICOWI study, nearly 95% of roof failures were caused by poor workmanship and substituted materials. We’ve seen, on occasion, nails from local hardware stores were used in place of proper fasteners. The question you should ask yourself now is this: “Is my roofing system prepared for a hurricane?

The Good News
If you’re unsure or have doubts, you really should call RAMCON to come and perform a comprehensive inspection. We offer free inspections and reviews for all our clients and will provide you documentation
about that status of your system. We’ll help you document a dry roofing system which will aid you with your insurance company should a roof become damaged during a storm. Our technicians will review the roof assembly, assure that all the rooftop units are secured and there are no weak spots in the system . We’ll identify missing fasteners, voids and punctures and much more so you can know your system is ready.

Evaluating The Roofing System After A Storm

You can’t do much to repair or maintain a roof while the storm is underway; a roof isn’t a safe place to be in bad weather. First and foremost, if you sense problems during a storm like ceiling tiles falling or sprinklers popping, indications that the roof may be caving in, you’ll want to evacuate the building immediately. Once you’ve taken all the steps you can to ensure the roof will weather the storm (best achieved with an inspection from RAMCON), what happens when it’s over? It’s wise to perform a post storm roof inspection.

Evaluate the Damage

As soon as it’s safe to examine the roof, it’s important that we do so. RAMCON has teams that specialize in post-storm inspections and can quickly and effectively inspect the roof for any substantial damage. As we review the system, taking action may be warranted. Anything that’s causing leaks is top priority and needs attention as soon as possible. Damage to the membrane, such as cuts, punctures and voids, needs to be addressed. It’s also vital to check the roof drains and gutters to see if they became clogged, which is common in a strong storm with debris flying around. Similarly, we’ll need to see whether any metal flashings have come loose, creating a risk of water getting behind the flashing and into the facility. If the roof has multiple levels, we will pay particular attention to the intersections of the walls and roof levels to make sure nothing has been dislodged. Also on the checklist: listening for a crunching sound as we walk the roof. That may indicate that the roof actually was lifted by the storm and is settling back into place as you walk over it, if that happens, we need to check it further. We may see that the fasteners have backed up and penetrated the roof membrane, so that they may cause leaks when the next storm hits. Several areas warrant checking that might not be apparent at first glance. For instance, we confirm that all penetrations and penetration flashings remain firmly attached to the roof. The same goes for any equipment screens, which should be “storm-worthy for the next event”. While roof maintenance often takes a back seat to other priorities on your “To-Do” list, it is an important part of managing and looking after the asset. An ongoing maintenance program can prevent more serious and
costly problems down the road.

Staying Sharp This Storm Season

“It’s been several years since the last bad hurricane, so you can get complacent,” says Rodger Osborne, director of facilities for the Martin County School district, one of the areas hit hardest by Frances, and then Jeanne three weeks later in 2004. “This taught us to inspect all roof installations more closely. It’s something we just can’t take for granted.”

A roof is rarely noticed unless there is a problem, but nothing brings it to the forefront of people’s minds like a storm that damages it or blows it off altogether. Sometimes, damage caused by hurricanes is unavoidable, as when flying debris punctures the roof. More often, though, roof damage can be prevented.

The first and most important part of preparedness, and an important lesson from the 2004 hurricane season, is that a preventive roof maintenance program is critical. While the new, more stringent roof codes are well-and-good for new facilities or new roof installations, facilities with older roofs are certainly at much greater risk for more extensive hurricane damage.

Considering the unpredictability of hurricane paths, facility executives may have only a few days to prepare. If facility executives keep up a rigorous preventive maintenance routine, the roof has a better chance of weathering the storm without facility staff having to scramble to make last minute preparations or repairs. Of course, even if the roof has been kept up, some disaster mitigation preparations are still in order.

Experts recommend having an experienced, knowledgeable, contractor do a complete inspection of the roof prior to the storm to pick up any loose items, such as screws, nuts or loose pieces of metal flashing, and taking down other objects that could be dislodged, such as satellite dishes or antennas. This could also be extremely beneficial after a storm, should there be damage and insurance claims, and documentation become necessary.

To have your roof thoroughly inspected, simply call one of our Customer Service Representatives today at 877-726-2661