How to choose a plywood marking?
Wdravstvuyte, dear readers!
After talking with a friend of the shop assistant shop building, I found out that the majority of buyers for some reason chooses the lowest plywood, fourth grade.
Upon reflection, we came to the conclusion that people just do not know what sort and for what purposes. That's how the idea of writing this article.
How to choose the plywood and the significance of these numbers?
Characteristics of plywood grades
FANERA is divided into certain types, taking into account its water resistance and appearance. Thus, the release:
- FKM - the moisture-resistant plywood meet infrequently, because it is expensive to manufacture. Stands for "plywood carbamide-urea" - these two maximum moisture resistant material used for bonding the layers of plywood.
- PSF - more widespread and more cheap plywood with almost as high moisture resistant qualities. The layers of veneer glued together with phenolic resin (PSF).
- FC - the usual classic plywood, glued with urea resin.
- FGC - plywood, glued with urea resin increased moisture resistance.
ABOUTdnako near the marks usually adorn more letters, hiding degree plywood surface treatment:
- W - polished;
- NSH - unpolished.
Cifry on the labeling of plywood also mean a lot. Do not lose sight of them and remember a simple rule: the smaller the better.
- grade E - I bet this will not meet in the network DIY stores. This so-called "elite" plywood grade - there are no bitch.
- grade I - per square meter of veneer may be a maximum of 3 knots to 15 mm diameters and chips to 2 mm.
- grade II - not more than 6 defects per 1 sq.m., including scratches and swirls and small glue spots;
- grade III - no more than 9 of defects on the same area as loose knots, etc. fibers digging
- grade IV - that it is most often construction supermarkets sell "for action" - a large number of knots, nekonditsiya and traces of glue. Nevertheless, this sort is perfect, for example, for laying on the floor.
INizualno difference between grades of plywood can be seen here: