Waterproofing test of tubes

Another early start in the library for Tube Cubed. After hours of hard work the tube team managed to test the waterproofing for the coated tubes. Coating of varnishes will help the cardboard tubes repel water and will stain the pavilion with a nice earthy brown, fitting right in with the beautiful gardens of Dunham Massey. A little experiment has been done with three one-meter cardboard tubes which were treated with different varnishes and different PVA base applications. Three qualities were tested:

1. Type of varnish (outdoor vs. yacht)

2. Number of layers of varnish

3. PVA base quality (diluted or not)

From the results of the experiment, both outdoor and yacht varnish worked well on waterproofing and gave the same result. Water flowed down the tubes and did not soak into the cardboard. Water formed droplets and slid off the tubes. The number of layers of varnish and PVA didn't affect the waterproofing much in this test. It is, however, important to know that more layers of varnish tend to darken the tubes. We may need to coat the ends of the tubes with more layers in order to protect the weakest points.