--- In papercreters@yahoogroups.com, "TerryW" <blazingsaddles@...> wrote:
Hi, we're in the process of making thinner block PC panels (3 inch thick) to cover the roof of our mobile home to help keep the sun from cooking us alive and tripling our electric bills (western arizona desert) and I need an inexpensive way to waterproof the panels. Since we do get some occasional t-storms during July/Aug with heavy downpours, without waterproofing they could absorb quite a bit of water which would add quite a bit of weight to our roof.
I checked the price of cool coating and it's a bit expensive. Any good suggestions? I was thinking of just coating the outsides of the panels but if there's something I can add to the mix so that the panels won't absorb rain water, that'd be even better.
Thanks!
Terry
Terry I read this somewhere on line and copied it down, they were useing this to make a fiberglass roof for a quick and lasting pole building somewhere in a third world country.
"The First Slurry Coat for fiberglass mat roof:
1. Mix liquid latex (or latex paint) and water in about equal amounts in a bucket.
Add portland cement to the bucket, mixing as you add it until it reaches the consistency
of a soupy paste. Spread this paste onto the surface of the fiberglass
mesh, spreading the paste out with a long handled push broom. Brush the slurry
onto the surface to fill all layers of the fabric. Brush the liquid out on the under
side of the mesh as it is forced through the mesh from above. Wear safety
glasses and a cap when working under the shell to keep the paste from getting
into your eyes or hair.
2. This coating will dry and harden into a surface which can be walked on. Be certain
that the layers of mesh are filled with the slurry, and that the slurry has filled
the layers wrapping around the poles to fully glue the layers to the poles. Wash
out the broom, bucket and tools regularly to keep them in working order."
I was going to try it over OSB board, before I spray a papercrete stucco directly over it. Might be worth a try.
Bob
__._,_.___
