If you are wanting to install a C-Head in a corner, there are some things that are important to consider. There are basically three kinds of corner installations.
Common corner installation
The first is simply installing the toilet in a corner facing out at an angle into the room. This is common with RVs and travel trailers. It can give the room the appearance of more usable foot space or standing room or it may have some other practical reason. In this type of installation the walls are at 90 degrees and extend all the way up perpendicular to the floor. Usually a wedged back or shorty model is used because of the angled back, but a basic model will work just as well if there is plenty of room in the bathroom it will simply stand out two inches further into the room.
Typical RV, travel trailer or cabin corner installation
If you are installing a wedged back or shorty model, here the issue is that when you place the toilet back into the corner. The hinge line for the housing lid is two inches from the back of the toilet. The angled corners that allow the toilet to slide back a little further cannot come forward of the hinge line, else you will not be able to raise the housing lid without it wedging against the two side walls. Therefore you are basically limited to the existing design which is 11 inches across the back. To determine how far back the toilet will go and how far out it will extend, make a cardboard mock up of the overall dimensions and hold it in place.
Installation with one side against a bulkhead and the other against the hull
Typical boat corner installation
The second type of corner installation is found usually on board boats, particularly on sailboats under 60 ft LOA. Typically the toilet (head) will be at an angle coming off of a bulkhead and facing halfway between fore and aft and athwartships. One side will be the bulkhead and one side will be the sloping hull which falls away as it rises. This allows the toilet to be installed back even further since the sloping side doesn’t present a barrier to opening the housing lid. With this installation it is more difficult to make a template to indicate how far it will be extending out into the room. With this type of installation, a plate template can be set on top of the existing toilet to visualize the installation. You will need to take car that what would be the base of the toilet does not extend back over the sloping hull portion of the space.
With this type of installation, a plate template can be set on top of the existing toilet to visualize the installation. You will need to take car that what would be the base of the toilet does not extend back over the sloping hull portion of the space.
Finally, there is the installation where the housing lid and toilet seat stand above the back walls such as in the bow of a boat between the sides of the V-berth. This type of installation presents no barriers to opening the housing lid, however care must be taken to support the toilet seat lid from behind, especially if it is to be used while underway and the danger of loosing one’s balance and falling against it is present. For this type of installation, the wedged back or shorty will be the only good choice.
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