1.5 mm

High-performance insulation underlay for vinyl and design floors
As an underlay for modern vinyl or design floors, SELITBLOC® 1.5 mm contributes to creating a noticeable improvement in the comfort of your home. This is achieved by its excellent sound insulation, especially in terms of impact sound. The pressure-stable foam core also does a good job in terms of protection against loads.

Developed for vinyl and design floors – high level of pressure resistance and resilience

  • Protection against damage
  • Efficient impact sound insulation
  • Protects the joints
Order number 70636
Thickness 1.5 mm
Dimensions 1.2 x 8.5 m
Package contents 10.2 m²
Why 1.5 mm

Easy to process

Easy to install
as a folding panel

Easy to cut
due to printed grid

Protects the floor

Protection in
uneven areas

Protection against

Prevents the boards
from slipping

Increases living comfort

Suitability for
underfloor heating*

Gentle on
the joints

Reduction of
walking sound

Reduction of
impact sound

Installing 1.5 mm –

a step-by-step guide

Before installation, please note: The base must be tested according to CEN/TS 14472 before the floor is installed. Its properties must allow proper processing. In general, the base should be clean, level, dry, resistant to tension and compression and should not contain any substances such as plasticisers, solvents or other diffusing substances. Textile floor coverings must be removed before installation in principle. Installation on ceramic tiles, linoleum or wooden floors is only possible with restrictions as this may mark the base. It must be ensured that the base is in a state of equilibrium humidity and that the CM value is below 2.0% (for cement screed) or below 0.5% (for anhydrite screed and anhydrite flowing screed). The processing instructions of the flooring manufacturer are to be observed as binding specifications.

Cleaning the surface

Cleaning the surface

Step 1
Clean the surface thoroughly with a brush or vacuum cleaner. Remove any adhesive and paint residues completely.

Laying out the first panel

Laying out the first panel

Step 2
Lay the first panel of the underlay flush with the wall over the entire width of the room with the cutting grid facing upwards.

Masking joints

Masking joints

Step 3
To protect against moisture, seal possible joints with SELITstop® Aluminium-Foil Sealing Tape to make the joints vapour-tight.

Masking the wall connection area

Masking the wall connection area

Step 4
Mask the wall connection area with SELITstop® Moulding Protection Belt to protect against moisture.

Installing the flooring

Installing the flooring

Step 5
Lay the vinyl floor in the same orientation as the underlay. Do not place any weight on the underlay. If necessary, place the vinyl board under your knees/feet to distribute the load.

Finishing the installation

Finishing the installation

Step 6
Repeat steps 2 to 3 until the flooring has been installed throughout the entire room.

Technical data (according to EN 16354)
Punctual conformability (PC) up to 1 mm
Compressive strength (CS) ≥ 400 kPa ≈ 40 t/m²
Compressive creep (CC) ≥ 25 kPa
Dynamic load (DL75) ≥ 250,000 Cycles
Impact sound reduction (IS) up to 19 dB
Water vapour diffusion resistance (SD)
Water absorption (EN 12087) ≤ 1 %
Thermal resistance (R) ∼ 0.04 m²K/W
Reaction to fire (RTF) Efl
*Suitability for underfloor heating Yes, if flooring R ≤ 0,11 m²K/W

Meets the minimum requirements of the EPLF and MMFA (Group 1)


SELITBLOC 1,5 mm Produktinformationsblatt
Size: 1,8 MB
SELIT Catalogue
Size: 7,8 MB
Excellent quality
Made in Germany.

Emissions-tested: A+

In accordance with the French VOC regulations, our underlays achieve the lowest emission values and therefore feature the A+ mark.
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Approved by the building authorities

Stay on the safe side with SELIT: all our underlays are approved by the building authorities.
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