Rigid airtight boards, structural, airtight & vapour tightUsing a rigid board to provide an airtight layer is a secure way to ensure that racking, airtightness and vapour control is delivered with one product. Using airtight boards eliminates the need for membranes and simplifies the process of achieving high levels of airtightness. The boards are simple to fit, reducing installation error, and ultra-strong so resisting accidental damage, if damage does occur then it is easily identified and repaired. Using boards makes good use of typical site carpentry skills and site tools. The joints are sealed using standard airtight sealing tapes.