Forum Discussion

USMC46's avatar
USMC46
Explorer
Dec 17, 2015

How much snow on roof OK ?

We are currently in a rented cabin in western Montana with the winterized coach sitting next to the cabin. I'm curious how much snow it is safe to leave on the roof ? I have a currently bad shoulder preventing me from climbing to remove the accumulation. I expect there may be 3-4 inches of very recent snow there now. Will a heavier accumulation do damage ? Thanks.
  • I guess it matters how much the weight is.

    Many say that you get 12" of snow for 1" of rain. So if melting say a pan filled with 6" deep snow melts to just 1/2" depth, you have about that ratio of snow to water.

    1 cubic foot of water is about 65 pounds. The RV is 8' wide, so it can be 250 pounds per running foot if 1 foot of water is on the roof. This would be equal to about 12 feet of fluffy snow.

    1 foot of fluffy snow would be around 20 pounds per running foot of the RV length.

    Yet if you have 3" of snow, then get a sudden 2" of freezing rain that will not wash the snow off the roof, then you could have a problem. I don't think Montana will warm to 33 anytime soon, so nothing to worry about there.

    It would be much safer to use a leaf blower to remove the snow from beside the RV, than to climb on it to try to remove it and possibly damage the A/C covers and shower skylight.


    Good luck,

    Fred.
  • Jim, I experienced 2 things RVing in the snow that I would like to share with you. #1. I had my slides out and it snowed 6" of wet sloppy snow! I didn't have a portable ladder so I had to use the back ladder on my coach. I had to climb up on the roof with a broom to wipe clean all the snow off the slide toppers so I could close the slides to leave. #2. It was snowing out that turned to rain I should have brought my slides in due to I was going to leave the RV site the next morning. It froze overnight freezing some water on the slide topper. I went to retract the slide the next morning and heard a big pop! The ice on the slide topper cut a hole in the slide out seal. Semper Fi, John, 1st Marine Division
  • I always shovel off the snow from the roof of my MH.

    The melting and refreezing that happens UNDER the snow load if you leave it there, is what cracks moldings, gaskets, seals, etc. resulting in leaks on the roof.

    Even if you only remove most of it that way the sun will melt the top so no damage occurs.
  • Effy's avatar
    Effy
    Explorer II
    I've cleared some snow off the roof of our MH in preparation for a trip once. No better place to be than 12' in the air on a slippery surface. I am convinced snow on an RV roof is the most slippery surface in the world. I won't do it again.
  • A picture or two, sort of explains it - some clean some don't;







    These are all from Tiger Run, in Breck.

    BOL
  • I have never seen anyone cleaning the roofs off of the RV's at any of the dealer's lots.
    I do know that in some states, you are required to clean the large accumulated snow off of your roof before you drive down the highway. Apparently they do not like it when large pieces of snow/ice blow off the roofs of large trucks and RV's and hit the other vehicles.
  • Here in Illinois we haven't had a super snow fall for a few years buy we have a ADCO cover on MH and I put 7 clothes baskets upside down on roof before we put the cover on, that way there is a little air space between MH and cover, and a little pitch from the baskets which helps the snow slide off, on a sunny day the snow melts quickly and if there is a little wind the snow disappears in no time at all, we normally get on the road for Fla. in March so I watch it, the week before and if there is any snow I slide a push broom over it to get most snow off, the sun does the rest, it has worked for us the last 6 yrs I NEVER go on the roof with snow up there-
    pauperspride.blogspot.com
  • Store outside in PA and have 2 feet of snow on the roof most winters.Never a problem.