Weather Alert: Potential For Exacerbation of Roof Collapses

By Linda Bock (Patch Staff)

Image: National Weather Service

There is concern among National Weather Service forecasters that weekend precipitation may exacerbate roof collapses in the region.

The potentially long duration storm is likely late Saturday night into Sunday with snow, or a wintry mix, that is in the forecast for the region. Snow could change to rain along the southeast coastal sections of Massachusetts, according to the NWS.

Forecasters are keeping their eyes on two potential storm tracks. One of the storm tracks would likely result in milder temperatures and rain. A second storm track would likely result in snow followed by extended periods of ice across the region.

MEMA Information on the Threat of Roof Collapse

Additional snow can add weight and stress to the roofs of structures if not cleared, according to Massachusetts Emergency Management Agency director Kurt Schwartz.

“Also, for areas that get rain, the dry, fluffy snow piled on roofs can act as a sponge, absorbing any additional sleet and rain,” Schwartz said in a recent MEMA news release. “Flat, commercial roofs are most susceptible if they are not draining properly.”

To minimize the risk of over-stressing a building roof due to accumulated or drifting snow:

• Be on the alert for large accumulating snow build-up or snowdrifts on your roofs.
• If roof snow can be removed, from the ground, with the use of a snow rake (available at most hardware stores), do so. Use caution, as metal snow rakes conduct electricity if they come into contact with a power line. Protective headgear and eye protection is recommended.
• Try to avoid working from ladders, as ladder rungs tend to ice up. Snow and ice collect on boot soles, and metal ladders.
• Flat roofs can be shoveled clear, but only if it is determined that the roof is safe to stand upon. Exercise care when on the roof to avoid potentially dangerous falls.
• Flat roof drainage systems should be kept clear to minimize the risk of excess roof ponding in the event of subsequent heavy rainfall or melting.
• Large icicles can form on roof overhangs, but do not necessarily mean ice damming is occurring. Icicles overhanging doorways and walkways can be dangerous and should be carefully removed.

All of the suggested actions by MEMA should only be performed by able-bodied adults, as the snow is heavy, and roofs and other surfaces may be slippery. If you are unable to safely remove the snow yourself, hire a qualified professional.