This BBSA guidance note explains how and why shading products might be needed for room darkening. It also explains how shading products are classed for their room darkening performance.
Download here: BBSA Guidance Note L-03 Room Darkening
This BBSA guidance note explains how and why shading products might be needed for room darkening. It also explains how shading products are classed for their room darkening performance.
Download here: BBSA Guidance Note L-03 Room Darkening