"Traditional joinery uses solid timber window sections. These single solid sections are subject to movement caused by variable moisture or temperature conditions. Multi-layer sections (known as laminate sections) are comprised of solid timber layers, glued and compressed. These timber layers form constructional veneers that increase the integrity of the sections, eliminating movement which in turn eliminates maintenance."
Pentru mai multe amanunte:
http://www.prospecjoinery.co.uk/faq.html Plywood, este placajul, care se obtine prin procedeul descris de MMForest in comentariul sau, se utilizeaza in constructii, dar nu pentru tamplarie pentru ferestre sau usi. Lemnul stratificat este format din imbinari de lemn masiv, fiind mult mai robust decat placajul. Va multumesc pentru contributii.
peer agreement (net): +3