Wednesday, January 7, 2009

Roofs Feeling Weight

Jan 7/09 from 24hours

Heavy rains are wreaking
havoc on roofs around the
region.
A warehouse in Burnaby
collapsed on itself yesterday
and a townhouse complex in
Port Moody was evacuated
because of a partial roof collapse.
Kerr Roofing operations
manager Keith Kinvig said
snow on rooftops would
increase in weight as it sops
up a steady supply of rain
over the next couple of days.
A roof covered with 25 cm
of snow can weigh upwards
of 300 kilograms per cubic
metre.
“If people have a lot of
snow on their roof and it continues
to rain, they should be
concerned,” he said of homes
30 years in age or older.
Environment Canada predicts
up to 50 mm of rain
today followed by another 10
mm of rain tomorrow.
On the bright side, temperatures
could climb as high as
7 C over the next two days,
causing snow to melt rather
than stick around and pose a
risk.
- Dharm Makwana, 24 hours