01 Jan Revised LTTR Values (R Value) for 2016
[vc_row css_animation="" row_type="row" use_row_as_full_screen_section="no" type="full_width" angled_section="no" text_align="left" background_image_as_pattern="without_pattern"][vc_column][vc_column_text]In January 2014 we sent a newsletter discussing newly posted LTTR values (R-value) resulting from revised testing criteria. According to the National Roofing Contractors Association (NRCA) the R value of 1" of polyisocyanurate insulation has dropped once again effective January 2016. Why...