Snow Weight On Camper Roofs: How Much Is Safe?

How much snow is too much snow on a camper roof? It's a question that has plagued camper owners for years, and with varying answers from different sources, it's hard to know what to believe. Some say that a camper roof can safely hold 1-2 feet of snow, while others claim that 3 feet of snow is no problem. So, who is right?

Well, it depends on several factors, including the type of snow, the weight distribution, and the condition of your camper roof. Let's take a closer look at each of these factors and how they impact the snow load capacity of your camper roof.

Firstly, not all snow is created equal. A cubic foot of light, fluffy new snow can weigh as little as 5 pounds, while a cubic foot of wet or compact snow can weigh 12.5 pounds or more. The longer the snow sits, the more it compacts and the heavier it becomes.

Secondly, it's important to understand the difference between distributed weight and concentrated weight. If you walk on your camper roof, your weight is concentrated within a small area, whereas if you sit or lay down, your weight becomes distributed over a larger area. Most camper roofs are designed to handle the weight of a person in a small area, but a dense amount of weight in a concentrated area can be more damaging.

Finally, the condition of your camper roof plays a significant role in how much weight it can support. Older camper roofs made with wood and wood framing may not be able to support as much weight as newer roofs made with aluminum framing and composite materials. Additionally, fiberglass roofs are generally the weakest, and many manufacturers recommend not walking on them.

So, how do you know if you need to remove the snow from your camper roof? As a general rule of thumb, you don't need to worry about removing less than 1-2 feet of snow unless you know your roof is weak, have existing leaks, or are about to travel. Removing snow from your camper roof can be dangerous, and it's best to use a broom or your hands instead of a shovel, which can easily damage the roof.

In conclusion, managing the snow load on your camper roof is essential to ensure a safe and enjoyable camping experience. By understanding the factors that influence snow load capacity and taking preventive measures, you can keep your camper cozy and secure during the winter months.

Snow weight depends on moisture content, with wet snow weighing more than dry snow

When it comes to snow, weight depends on moisture content, with wet snow weighing more than dry snow. This is because wet snow contains more water, making it heavier and more challenging to shovel. In contrast, dry snow has less water content, allowing it to accumulate more due to colder temperatures. It is fluffier and lighter in weight.

The moisture content in snow varies depending on the storm and its track. Storms originating from the Midwest or the Great Lakes tend to have lower moisture content, while those coming from the south or tapping into moisture from the Gulf of Mexico or the Atlantic Ocean carry significantly more moisture.

The "snow ratio" is a term used to describe the percentage of water in snow. While the traditional rule of thumb suggests a 10:1 ratio, indicating that for every 10 inches of snow, there is 1 inch of water, this is not always accurate. Recent studies suggest that a 12:1 ratio may be more representative, especially in the Upper Midwest. However, it's important to note that this ratio can fluctuate significantly within a single snow event due to various factors.

One factor influencing the snow ratio is the depth of the warm layer from the surface into the snow-producing cloud. The closer the temperature is to freezing, the lower the ratio will be. Additionally, the amount of ice in the cloud plays a role. A higher presence of super-cooled water droplets results in lower ratios, while an abundance of ice crystals leads to higher ratios.

Wind can also be a factor, as it can cause snowflakes to fracture and lose their structure, resulting in lower accumulations and ratios. Conversely, deep cold temperatures generally promote higher snow ratios.

When it comes to camper roofs, understanding the weight of snow is crucial. A cubic foot of wet snow can weigh around 20 pounds, and the weight can increase further if the snow melts and refreezes. This weight can exert immense pressure on the roof, potentially causing damage or collapse. Therefore, it is essential to monitor snow accumulation and take preventive measures, such as removing excess snow or ensuring proper roof reinforcement.

In summary, the weight of snow depends on its moisture content, with wet snow being heavier than dry snow due to its higher water content. This knowledge is essential for campers, especially those in snowy climates, to ensure the structural integrity of their camper roofs and prevent potential damage.

Snow can damage your camper roof by causing cracks and fissures in the roof material

In addition, ice on the roof can be challenging to remove, and using sharp objects or ice melt can further damage the roof. It is crucial to be cautious when attempting to remove snow or ice from your camper roof, as it is a slippery surface, and falling can cause injury. Using a shovel can also lead to worse roof damage, as it can damage roof vents and appliances.

To prevent snow accumulation, some people use a roof rake, broom, or their hands to remove snow, especially after a fresh snowfall when it is easier to brush off. Others use an RV cover or park under an RV carport to keep snow off the roof.

It is also important to consider the weight of the snow. Snow weight depends on its moisture content, with wet, compact, or dense snow weighing more than light, fluffy snow. A cubic foot of light, new snow can weigh as little as 5 pounds, while a cubic foot of wet or compact snow can weigh 12.5 pounds or more. Therefore, it is recommended to remove snow when it reaches 1 to 2 feet in depth to prevent excessive weight on the roof.

Additionally, the age and condition of your camper roof, as well as the type of roofing material, will impact how much weight it can support. Older roofs with wood and wood framing may be weaker than newer roofs made with aluminum framing and composite materials. It is always a good idea to check your owner's manual or consult the manufacturer to understand the weight limits of your specific camper roof.

Melting snow can cause water damage inside your camper

To prevent water damage, it is recommended to remove snow from your camper roof, especially if you have travel plans. However, it is crucial to use safe snow removal techniques. Avoid using a shovel, as it can easily damage your roof and cause cracks or cuts. Instead, opt for a broom or your hands to gently brush off the snow. If the snow is dense or has been on the roof for a few days, it might require more effort to remove. Always exercise caution when getting on your camper roof, especially in wet and slippery conditions.

Additionally, there are alternative ways to keep snow off your camper roof. Consider parking under an RV carport or opting for covered RV storage. If covered storage is not available, using an RV cover can help prevent water damage. Taking preventive measures and safely removing snow will ensure your camper remains cosy and safe during your winter adventures.

You should never use a shovel on your camper roof as it can lead to worse roof damage

You Should Never Use a Shovel on Your Camper Roof

As a camper owner, you might be wondering whether it's a good idea to shovel snow off your camper's roof. While it's important to remove snow to prevent damage, using a shovel can lead to worse problems and is not recommended. Here's why you should never use a shovel on your camper roof and what you should do instead to safely remove snow.

Reasons to Avoid Shovelling Your Camper Roof

Shovelling snow off your camper roof can cause more harm than good. Here are the key reasons why you should avoid it:

Risk of Worse Roof Damage:

Using a shovel can cause significant damage to your camper's roof. The shovel can easily scrape and dent the roof, leading to more costly repairs than any potential damage from the snow alone. The roof of your camper is designed to withstand certain snow loads, and shovelling can compromise its integrity.

Personal Safety Hazards:

Standing on a snowy or wet camper roof is dangerous. The snow may conceal a layer of ice, or the roof may be slippery from melting snow, increasing the risk of slipping and falling. Additionally, starting the camper to melt the snow can create a layer of ice under the snow, further endangering your safety.

Alternatives to Shovelling

Instead of reaching for a shovel, there are safer and more effective ways to remove snow from your camper roof:

Use a Ladder and Rubber Rake:

The recommended approach is to use a ladder and a rubber rake. Position the ladder at the roof's level and gently brush off the snow layer by layer. Avoid standing on the camper, as you may slip, and be cautious not to brush off too much snow at once due to limited leverage on the ladder.

Preventative Measures:

The best way to deal with snow is often to prevent its accumulation. Consider using an RV cover to shed snow, especially one with a slanted or pitched design. An extra-thick cover can also help cushion the impact of snowfall. Weather apps can help you anticipate storms and move your camper to a safer location.

Snow Removal Specialists:

In areas with heavy snowfall, consider hiring a snow removal specialist. They have the expertise and equipment to safely remove snow from your camper roof without causing damage.

Calcium Chloride for Ice Dams:

If you're dealing with ice dams—snow melting and refreezing at the roof's edges—use calcium chloride snow melt products. Place the calcium chloride in a stocking and lay it over the hardened ice to slowly melt it away without damaging your camper's roof.

While it's crucial to manage snow on your camper roof, using a shovel is not the right approach. By understanding the risks and employing safer alternatives, you can effectively remove snow and protect your camper from damage during the winter months.

If your camper roof doesn't have a ladder, consider covering it with plywood to distribute your weight if you need to walk on it

If your camper roof doesn't have a ladder, it's likely not designed to be walked on. However, if you need to access your roof for maintenance or snow removal, you can consider covering it with plywood to distribute your weight and reduce the risk of damage. Here are some detailed instructions and tips for doing this safely:

• Use plywood or similar materials: Plywood is a common material used to distribute weight when walking on a camper roof. You can also use materials like 2x4s, polystyrene foam board, or blue styrofoam insulation. These materials provide a larger surface area to spread out your weight, reducing the pressure on any single point.
• Size and thickness: The size and thickness of the plywood will depend on your specific camper roof. A common recommendation is to use 4' by 4' squares of plywood, which can be easily moved and manoeuvred on the roof. The thickness doesn't need to be very thick; even a thin layer of plywood can provide enough support.
• Overlap the trusses: If you know the location of the trusses (the structural supports) on your roof, try to overlap the plywood with these areas. This ensures that your weight is distributed across the strongest parts of the roof.
• Avoid walking directly on the roof: Even with plywood, it's best to avoid walking directly on the camper roof. Instead, crawl or lie on the plywood to further reduce the risk of damaging the roof.
• Use a ladder for access: To get onto the camper roof, use a separate ladder. An extension ladder or a multi-position ladder can be a good option, but ensure it's tall enough to safely reach the roof.
• Be cautious: Always exercise caution when accessing your camper roof. Avoid walking on a wet roof, as it can be slippery and dangerous. Also, be mindful of any weak spots, such as areas around vents, skylights, or other cut-outs.
• Consider alternatives: If you're uncomfortable walking on the roof, consider using a snow rake or a long-handled squeegee to remove snow from the ground. You can also invest in a specialized RV roof cover that creates a peak, preventing snow from accumulating.

Remember, it's always best to consult your camper manufacturer or a qualified RV technician for specific advice regarding your camper roof. They can provide guidance on weight limits, safe practices, and any unique considerations for your particular model.

Frequently asked questions