GUTEX Multitherm®

Moisture-resistant insulation board

  • 40
  • 60
  • 80
  • 100
  • 120
  • 140
  • 160
  • 180
  • 200
  • 1760x600 mm

λD (W/mK) 0,040




  • Sheathing directly over timber frame constructions, over wood sheathing and over masonry under the facing in vented facade constructions
  • Full boards install under rafters without interruption (not suitable for between-rafter use)
  • Suitable in 100-mm or greater thickness as additional above-rafter insulation, fastening to the rafters
  • DIN 4108-10: DI-zg, WAB-dm, DAA-dh
Technical Data

GUTEX Multitherm®


  • Superior moisture resistance due to hydrophobic treatment
  • Suitable as temporary roof covering (max. 4 months)
  • Makes structures wind-tight
  • Reduces thermal bridging
  • Consistently uniform board dimensions make installation quicker and easier
  • Homogeneous, single-ply construction
  • Ideal for upgrading the thermal insulation of existing structures
  • Superior thermal storage capacity provides outstanding insulation against heat in summer and cold in winter
  • Improves acoustic insulation
  • Regulates humidity and is vapour diffusion permeable
  • Manufactured from wood, a sustainable natural resource
  • Recyclable
  • Biologically safe (natureplus© certified)
  • Made in Germany

Certificates & Test marks

  • tuev-12853-iso9001
  • keymark-multitherm-2017
  • np_0104-0604-012-2
  • emas-143-00002-din14001-2009-de
  • epd-ibu-iso14025
  • ce-04
Technical Data

Please follow the following instructions carefully:

  • Always store the boards in a dry place. Only install the boards if they are dry.Suggested board thickness for use with GUTEX Thermofibre® blow-in insulation: ≥ 60 mm
  • Install boards perpendicular to framed construction, making sure they fit tightly.
  • Avoid cross joints.
  • Do not use damaged boards.
  • Seams and interruptions, such as dormer walls, chimneys, etc., must be tight against wind and driving rain.
  • Cut to size with common woodworking machines.
  • Boards are not designed and made to provide structural support, strength or bear loads.
  • Avoid exposure to high levels of moisture on the interior sides of the boards.
  • Vacuum off the dust in accordance with applicable workplace safety regulations or practices.

Intallation - Walls

  • Following on-centre distances apply:

    20 – 40 mm board thickness → max. on-centre is 62.5 cm

    60 – 100 mm board thickness → max. on-centre is 83.5 cm

    120 – 160 mm board thickness → max. on-centre is 93.5 cm
  • Stagger/offset the joints from row to row by min. of 30 cm.

Installation - Roofs

  • Maximum on-centre distances for rafters is 90 cm
  • Stagger butted side joints with the next row’s joint being centred no closer than the next rafter.
  • void walking on areas between the rafters.
  • Fasten the board immediately after placing in position and cover it for protection with roofing paper, sheathing or sarking (e.g. GUTEX Multiplex-top). Fasten counter batten through the protective covering and into the rafters. For your convenience in determining the most suitable fastener, you'll find fixation forms under "Service"
  • GUTEX Ultratherm is not a load-bearing structural element (e.g. snow).
        Fastening in vented facade applications
        • To determine the wind load for your specific zone (pursuant to DIN 1055-4:2005-03), use the wind zone map.
        • You'll find information about the quantity of nails and their spacing in the GUTEX Multitherm data sheet. 
        Multitherm - Walls
        Multitherm - Roofs
        Multitherm - Roofs