Revisions log for Answer #124
This is the answer to the question What prefabricated garage to choose – concrete or steel?
Revision 1
The principal advantage of a steel garage is that it can be easily dismantled and reused elsewhere, making it easier to upgrade or relocate. It is also more convenient to transport and install using a wrecker's wrench. For example, a precast concrete garage does not get along with the fact that the roof overhang of the house is already there when it is installed, if it is to stand right next to it. The durability of both is the same, both in absolute terms and in terms of how long they will look. I know several types of garages from decades of observation that have had or still have their own use: pumice with and without flooring, concrete with flooring, steel with paving, and steel on composite.
Condensation forms because of temperature differences on the sunny and shady side of the sheet metal roof, which has nothing to do with ventilation.