Request Quote Thermawood Retrofit Double Glazing & New Timber Double Glazing are registered double glazing systems & are available only through licensed installers. Request Quote First Name* Last Name* Email* What are your window frames made of?* What are your window frames made of? Wood Aluminium Other Street address* City* Province* Province Auckland Bay of Plenty Canterbury Gisborne Hawkes Bay Manawatu-Manganui Malborough Nelson Northland Otago Southland Tasman Taranaki Waikato Wellington West Coast Post Code* Phone* Submit