Vinyl underlay for small installation heights
If you want to install a modern vinyl or design floor and only a low installation height is available, SELITBLOC® 1 mm is exactly the right choice. Its pressure-stable foam core protects the floor from damage caused by unevenness and the substantial impact sound insulation keeps things quieter for your neighbours. Even your ankle joints benefit from SELITBLOC® 1 mm.

Developed for vinyl and design floors - highly stable under pressure and resilient

  • Protection against damage
  • Protects the joints
  • Efficient impact sound insulation
Order number70634
Thickness1 mm
Dimensions1.2 x 12.5 m
Package contents15 m²
Why 1 mm

Easy to process

Easy to install
as a folding panel

Easy to cut
due to printed grid

Protects the floor from damage

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 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. The base must be suitable for 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.

Installing the flooring

Installing the flooring

Step 3
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 4
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 0.5 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 17 dB
Water vapour diffusion resistance (SD)
Water absorption (EN 12087)≤ 1 %
Thermal resistance (R)∼ 0.03 m²K/W
Reaction to fire (RTF)Efl
*Suitability for underfloor heatingYes, if flooring R ≤ 0.12 m²K/W

Meets the minimum requirements of the EPLF and MMFA (Group 1+2)


SELITBLOC 1 mm Produktinformationsblatt
Size: 1,7 MB
SELIT Catalogue 2021
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.
Learn more

Approved by the building authorities

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