The Pounds Of Snow On Your Roof May Literally Weigh Tons

snow-weight-on-roof

You might be very surprised to discover how much snow weighs up on your roof, and the stress and potential danger your home or building might be to roof collapse after heavy accumulation…


 
A cubic foot of snow can weigh about 7 pounds if it’s dry and fluffy, and it could weigh over 20 pounds if it’s wet and compacted!

Two feet of snow over a roof with a footprint of say, 28×40 feet, could weigh 45,000 pounds! That’s more than 22 tons!

Even just one foot of the light fluffy snow will still weigh 3 tons on that same roof!

Flat roofs are especially vulnerable to roof collapse while pitched roofs can also accumulate snow.

In addition to roof integrity, watch out for snow slides off of a roof – just like an avalanche. If you’re in the wrong place at the wrong time, you could be seriously injured if caught underneath an ‘avalanche’ of snow sliding off your roof.

 
Here are a few examples of the potential weight of snow on a roof:

28×40, Light, Fluffy Snow
1 foot of snow on the roof (7,000 pounds)
2 feet of snow on the roof (13,000 pounds)
3 feet of snow on the roof (20,000 pounds)

28×40, Heavy Wet Snow
1 foot of snow on the roof (22,000 pounds)
2 feet of snow on the roof (45,000 pounds)
3 feet of snow on the roof (67,000 pounds)

 
Now imaging an industrial type building, or a barn, etc.!

Lets say the footprint is 40×60 with 2 feet of heavy snow. That roof (if it’s still standing) will be straining under 70 tons of snow.

If you live in a region where you might occasionally face a very heavy snowfall (or series of heavy snowstorms) which may accumulate deeply on your roof, you might consider having it removed! You might not be safe while living underneath all that snow…

 
Have any of you ever experienced problems with literally ‘tons’ of snow on your roof?

12 Comments


Modern Survival Blog is a Top Prepper Website

  1. Bill January 23, 2015 3:34 PM
  2. Spooky January 23, 2015 3:39 PM
    • Anonymous January 23, 2015 11:54 PM
  3. GoneWithTheWind January 23, 2015 3:42 PM
  4. Uncle B January 23, 2015 4:23 PM
  5. oldalaskan January 23, 2015 10:27 PM
  6. canadagal January 24, 2015 12:32 PM
  7. Mark January 24, 2015 2:08 PM
  8. AnnaInOhio January 28, 2015 8:00 AM
    • Ken Jorgustin January 28, 2015 9:24 AM
    • Spooky January 28, 2015 10:42 AM
    • Anonymous January 29, 2015 9:25 AM
Vote for MSB -Top Prepper Website

Read our Comment Policy

For off-topic discussion, visit the latest:
'Weekly Preparedness' post

For the most recent comments from all articles:
'Recent Comments' page

Leave a Reply

Email optional - will not be published