. Proceedings of the annual convention . of to be classed as impermeable. These were both pigmented linseedoil coatings. 6. Nine pigmented-oil house paints used experimentally showed good durability andwaterproofing ability when subjected to the first series of weathering tests. These resultswere substantiated by data on one of these from the second series of weathering undercoats and one finish coat were used. 7. Linseed oil used experimentally showed good results in both the first and secondseries of weathering tests when 3 coats were applied at 140-160 deg F. 8. A specification fo
. Proceedings of the annual convention . of to be classed as impermeable. These were both pigmented linseedoil coatings. 6. Nine pigmented-oil house paints used experimentally showed good durability andwaterproofing ability when subjected to the first series of weathering tests. These resultswere substantiated by data on one of these from the second series of weathering undercoats and one finish coat were used. 7. Linseed oil used experimentally showed good results in both the first and secondseries of weathering tests when 3 coats were applied at 140-160 deg F. 8. A specification for waterproofing coatings can be written on the basis of theresults of this investigation, which would involve some sort of weathering procedure,coupled with before-weathering and after-weathering immersion tests that would insurethe use of a coating which was initially effective, which would be durable during theweathering test, and which would retain its effectiveness as a waterproofing coating. lib Waterproofing CEMENT - BASE COATINGS. -2 -4 0-2-4 -4 -6 RESIN SOLUTIONS - PIGMENTED
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