BMI Redland Spirtech 400 2S Vapour Permeable Roof Underlay 50m x 1.5m Roll

Product Code: P4887
BMI Redland Spirtech 400 2S Vapour Permeable Roof Underlay 50m x 1.5m Roll

BMI Redland Spirtech 400 2S Vapour Permeable Roof Underlay 50m x 1.5m Roll

Description

  • A heavy-duty underlay with a unique glue strip system that provides raintight overlap and passes the BS 5534:2014 wind uplift requirements for use anywhere in the UK.
  • This is ideal for both warm and hybrid roof systems where wind penetration can affect the performance of the roof insulation at rafter level, as well as traditional cold roofs where the underlay needs to effectively withstand the wind uplift forces acting upon it to ensure it reduces wind loading of the roof tiles.
  • Length: 50 mtr
  • Width: 1.5 mtr
  • Roll Size: 75 m2
  • Weight: 230 gsm
  • Material: 4 layer Spunbond Polypropylene fleece, Polypropylene grid, Polypropylene vapour transmission layer