rAF,gEHf,X

Warped Doors

8oo{''"+ so apt to warp architectsand We asked for

Some 19OO experiences were told.. instances of doors that warped... and practicalopinions giving the reasons. Nearly every one namedwetplaster as the most frequent cause of warped doors. Other frequent causes given were: "Doors facing dampness on one side and artificial heat on the other"; "Llouses closed up for long periods while damp"; "Doors warping through dampness in transiC' There are many other causes, as every builder knows -causes thatcannot always be prevented-natural conditions that are bound to do damage to ordinary doors. To withstand these conditions a door needs more than plywood panels. The mischief is found in stiles and rails which, in ordinary doors,have no supporting "back, bone." This is notably true in the one. and two,panel doors now sq widely used.

In every Laminex doorrthe stiles and rails are built up on a core of inter, locking blocks with the grain crossed in adjoining sections. All parts are welded with a wonderfu I waterproof cement; then placed under tremendous hydraulic pressure for 24 hours.