Foam varnish for painting concrete floor
Due to numerous requests in the comments to my videos today I will try to make a composition of foam and solvents for application to concrete. I want to see how it will behave, because car owners are interested in cheap varnish to cover the garage against dampness.Note: gas will bubble and spill out of the can. The resulting composition has the appearance of a gel and looks like napalm (at ignition it immediately flashes, burns for a long time, the flame is high). To adjust the viscosity of the composition by adding gasoline does not work - it reaches a certain thickness and this process stops. I leave the jar for some time, so that the air bubbles come out and all the pieces of foam will dissolve.Pouring the varnish on the concrete and starting to apply it with a spatula in different directions on the surface. After finishing the work on the spatula, practically nothing remains. When applying the varnish immediately smell the gasoline. I leave this area for about an hour to dry.When xylene is added to the jar, the foam will dissolve almost completely, the viscosity of the composition becomes lower, the thick lump disappears.The composition of such viscosity can be applied in a much thinner layer. It seems that xylene is better suited for the preparation of polystyrene varnish. Note: I was also advised to use 647 thinner, but it was not at hand.I will try to use the composition on xylene as varnish on wood. I take a walnut branch cleared of bark and apply a thin layer of the composition with a brush. It turns out very well, but you need to wait for the varnish to dry.I also apply a layer of the composition to the concrete with a brush. The layer is very thin and there are no air bubbles in it. I leave to dry out. The first part I didn’t completely dried out in an hour - a film with a very large number of bubbles formed on the surface.Huge bubbles formed on the sides. It feels like a well-known bubble wrap. However, as an option, such a composition can be used after complete drying.Better to get the area covered with varnish on xylene. The composition is well absorbed into the surface of the concrete and looks like a real varnish.The only negative is the high cost of xylene in comparison with gasoline.To reduce the cost, you can first dissolve the foam in gasoline, and then add xylene and achieve the desired viscosity. It will be inexpensive to prepare a composition based on draft xylene, which is sold in cans and costs less. Note: on the tree, the composition has dried in 10 minutes and is apparently indistinguishable from real varnish. In the future, for an experiment, I can take a board polished on a machine in a nearby furniture shop and apply 3-4 layers of varnish on xylene to it.