First, the questions:
I went to HD today to buy flooring, framing, and template lumber, and while there, I looked at roof coatings. They have so many that I came away unsure of what is being used to coat the underside of the floors. I saw several types, including:
Gardner Fibered Roof Coat, $5.99 per gal.
Wet R Dri All Weather Ruberized Cement, $5.89 per gal.
Perectrex Rubberized Roof Patch, $8.47 per gal.
Kool Seal Elastomeric Roof Coating, $14.94 per gal.
Who has used any of these and how well does it seal? The first 3 are troweled on, and the last looks like it can be rolled. I used Elastomeric paint on my block walls of my house, and it is fantastic. I still plan on putting an application of eurothane varnish on the bottom and edges of the floor before the undercoating anyway. AFter construction, I'll varnish the interior side of it before putting down vinly flooring.
Now, the answers:
I have charts for wood weights, and the ¾” plywood says 75 lbs per sheet. I weighed a sheet of ¾” B/C that I bought, and it weighs 87 lbs. I weighed 3 sheets of 5mm moisture resistant luan and they weighed 56 lbs, or 18.66 lbs per sheet. I weighed three 1x10s (spruce) and they computed to about 1.5 lbs per sq ft. This may be of interest to anyone estimating their trailer cabin weight before or while building. I had the luan and ¾” framing lumber estimated heavier and the ¾” lighter. Over all, these actual weights put in to my spreadsheet reduced my estimated weight a little, mostly by the reduction in weight of the framing as the plywood differences almost canceled each other out.