Installation Instructions

T-Foam Duo 25

Floor underlay with moisture protection

2024-05-14

Important!

  • Storage and warehousing should always be done indoors, packaged or in a way that protects the product from sunlight (UV radiation) and heat (˃ +35°C). The maximum operating temperature when mounted on the floor is also +35°C. Higher temperatures primarily affect aging resistance.
  • On substrates of concrete, lightweight concrete, or floor leveling compound, with relative humidity (RH) over 60% (up to a maximum of RH 90%), an aging-resistant moisture barrier such as T-Foam Duo should be used.
  • On substrates such as slab on ground, floor joists above warm or humid spaces, or floors with underfloor heating, moisture protection should always be used under wood and laminate floors, such as the combination product T-Foam Duo. However, the maximum relative humidity (RH) allowed in the substrate with moisture protection (vapor barrier) is 90%.
  • Every joint and overlap with moisture protection foil should be taped for optimal moisture tightness with Sealing Tape T-Flex. Pay special attention to warm floors and floors above warm or humid spaces.

1. Preparation

T Foam Duo 1

Ensure that the surface is clean, dry, even, and free from debris. Roll out the foam and cut to appropriate lengths. T-Foam Duo is laid with the printed foil side facing up. Turn the foil edge towards the wall at the start. Cut/trim off the foil edge of the first strip along the entire length.

It is advantageous to start the installation of the flooring after the first foam sheet is placed. Continue step by step with additional sheets and flooring. This way, you don't have to work and wear directly on the subfloor (T-Foam) before the flooring is laid.

2. Installation

T Foam Duo 2 Langd

T-Foam should be laid loosely and completely flat without anchoring. The foam is laid edge to edge with the foil edges overlapping. The overlaps are taped with T-Flex Sealing Tape for optimal tightness.

T Foam Duo 3

Cross joints are placed edge to edge and taped over with T-Flex Sealing Tape.