The laminated profiles which are used in wooden window production are made from timber which carefully selected and then dried in computer supported kilns and thereby the humidity content is dropped below 12%. These timbers are cleaned from their knobs and joined again by finger-jointing method and brought into semi-finished state by special lamination glues and press after being laminated in three layers.
Yes. Usually, origin of insulation problems at windows are bending and sagging problems at the sashes. Use of lamination technology, together with proper hardware and glass assembly techniques eliminates the sagging problem.