When choosing a porch awning, it is important to establish the Straight Awning Rail Measurement or the straight part of the roof section of your touring caravan. This measurement will help you establish the maximum length of the porch awning you can affix securely to the caravan as the manufacturer intended.

It is important that the roof section of your awning sits straight on the roof part of the caravan and does not go over the hump or sloped part of the roof. This helps with the pitching angle of the roof, helps water run off freely and reduces the risk of rain pooling on the roof of the awning.

 

Here is a few other important things to look out for to look out for:

Position of the door:
In ideal case scenario you would want to be freely able to open and secure the door in opened position without obstructing the awning side panel.

Position of caravan windows.
Porch Awnings have straight walls with padding to facilitate a perfect vehicle seal. When measuring for a porch awning, it is important to make sure the sides of the awning do not come across any windows, as this may affect the performance of the awning in rain or windy conditions