Thin and high-performance
Its thin design makes SELITFLEX® 1.6 mm AquaStop an excellent choice for combination with underfloor heating. Despite its slim design, the underlay offers very good sound insulation values and reliably protects your floor from damage caused by falling objects. The integrated vapour barrier stops rising moisture. With pre-laminated silent laminate floors, SELITFLEX® 1.6 mm AquaStop is used as an additional underlay to level out small uneven areas.
Polystyrene foam with good compressive strength – ideal for underfloor heating
Before installation, please note: check the base in accordance with CEN/TS 14472 and ensure that the quality of the base is 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. 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).
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. Make sure that the aluminium side is at the top.
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 Tape the wall connection area with SELITstop® Moulding Protection Belt to protect against moisture.
Installing the flooring
Installing the flooring
Step 5 Lay the flooring in the same orientation as the underlay. Do not place any load on the underlay. If necessary, place the board under your knees/feet to distribute the load.
Finishing the installation
Finishing the installation
Step 6 Repeat steps 2 – 5 until the entire floor has been installed. Use the overlap and the adhesive strip to affix the individual panels of the underlay together. Cover any further joints with the Aluminium-Foil Sealing Tape to make them vapour-tight.
Technicaldata(according to EN 16354)
Punctual conformability (PC)
up to 1 mm
Compressive strength (CS)
≥ 60 kPa
Compressive creep (CC)
≥ 5 kPa
Dynamic load (DL25)
≥ 100,000 cycles
Resistance to large ball (RLB)
≥ 90 cm
Water vapour diffusion resistance (SD)
≥ 100 m
Thermal resistance (R)
∼ 0.060 m²K/W
Impact sound reduction (IS)
up to 20 dB
Reaction to fire (RTF)
Efl
*Suitability for underfloor heating
Yes, if flooring R ≤ 0,09 m²K/W (e.g. laminate up to approx. 12 mm, wood flooring up to approx. 14 mm)
Meets the minimum requirements of the EPLF and MMFA (Group 1)
Downloads
SELITFLEX 1,6 mm AquaStop Produktinformationsblatt