Winterizing Your Camper - Some Thoughts On Keeping Your Camper Warm

When starting a camper project from the very beginning, the conditions that the camper will be used in need to be considered. In the US, the temperature can go from sweating hot, to bone chattering cold between seasons. Here in the west of Europe, things are a little different.

We quite often get a middle range of temperatures, things never get too hot, or really go too cold. So an approach to this needs to be taken during the construction process of the camper.

Typically campers here do not have very thick walls. The same can be said for most vans and campervans that are currently on the market today. They are usually created for the good seasons, as people rarely go out on holiday in the winter months. But some people do!

The insulation in the camper can then suddenly be inadequate and warm days suddenly come with really cold nights. Preventing this from happening needed a lot of thought.

At the moment, the walls in the camper are currently pegged at being about two inches thick. This will give plenty of space for a two inch thick insulation, or 50mm for us European people, to be added in.

One of the recent advents in the insulation world was creation of polyiso insulation, or "rigid foam" as it is often known.

Unlike polystyrene insulation (the white stuff) you would have seen used throughout the 80's and 90's, polyiso insulation is denser and often covered in a foil film offering better insulation. To ensure a good seal, a foil type tape is available to seal up the gaps.

Where Your Camper Loses Heat

People often wonder about campers and where all of the heat is really lost. It can be seen from a number of different angles. Below is a breakdown of where your heat goes!

1. The floor of an RV or a camper is often made from some wood or floor pan sheet metal that has been added to the chassis frame. In a lot of cases, that is really it! Although heat rises, a cold floor can quite quickly turn your hot air into cold cold air.
   
   By insulating the floor, we can reduce the risk of losing heat out of the floor. The wind gap underneath the camper or RV is also an issue. Because the floor is raised up and a gap of anywhere between 10-14 inches is there, cold air can easily flow in under the camper. To prevent this draught from happening, people have often moved towards the idea of creating a skirt around the camper. This can stop the flow of cold air under the camper.
2. The roof of the camper again, like the walls needs to be insulated. If all the hot air is hitting your roof, you need to ensure that it is not a cold metal surface that can turn your expensive hot air into cold air.
3. Windows and doors although useful during the day if left open at night can becoming gaping air holes allowing all your precious hot air to flow out. Do not block up your vents however, they are needed for safety!

Heater Strips
If you have external water sources, one product that is on the market are heater strips designed to go around your pipes. They require a very low voltage and keep your pipes just above freezing to keep the water flowing, preventing cracks and leaks.

This solution however, can be costly to power if you are running on a solar rig.



In conclusion, as soon as the camper outside plywood has been added, it is insulation time!


A nice comparison of insulations can be found here
For a little bit more about polyiso insulation, check out here