DBRED FONOTECH

LAMINATED AND SINGLE-LAYER UNDERLAY IN ROLLS FOR IMPACT SOUND INSULATION

DBRED FONOTECH is the underlay in rolls for impact sound insulation under floating screeds. Expanded closed-cell polyethylene with an integrated technical rubber compound gives it elasticity and resistance to repeated loads, so impact noise stays low over time. It contains 60% recycled LDPE, is fully recyclable and suits radiant floor heating systems.

The range covers every requirement: FONOTECH 3, 4, 5 and 10 mm (0.118, 0.157, 0.197 and 0.394 in) (ΔLw 21 to 27 dB); FONOTECH PLUS, with an extra layer of needle-punched polyester fibre, 7 to 14 mm (9/32 to 9/16 in) thick (ΔLw up to 33 dB); FONOTECH 5.6 ANTISCRATCH, with an embossed reflective aluminum film that protects the underlay on site and a 50 mm (2 in) side overlap (ΔLw 36 dB).

Light rolls, quick to lay and to join with dBred tapes, for slabs in hollow-block concrete and reinforced concrete in new buildings and renovations.

NOTE

Up to 36 dB impact sound reduction
60% recycled LDPE, fully recyclable
Suitable for radiant floor heating
VOC A+

FONOTECH 3 / 4 / 5 / 10 mm (0.118 / 0.157 / 0.197 / 0.394 in): ΔLw 21 / 22 / 24 / 27 dB (ISO 10140-3); dynamic stiffness s' 58 / 53 / 48 / 41 MN/m³ (214 / 195 / 177 / 151 lbf/in³).
FONOTECH: density 30 kg/m³ (1.9 lb/ft³); λ 0.038 W/mK (0.26 BTU·in/(h·ft²·°F)); thermal resistance R 0.08 / 0.105 / 0.13 / 0.26 m²K/W (0.45 / 0.6 / 0.74 / 1.5 h·ft²·°F/BTU); μ 5000; service temperature -20 / +80 °C (-4 / 176 °F).
FONOTECH rolls: height 1550 / 1500 / 1500 / 1300 mm (61 / 59 / 59 / 51 in), length 100 / 60 / 50 / 50 m (328 / 197 / 164 / 164 ft); reaction to fire B-s1,d2 (4 mm (5/32 in)); VOC emissions A+ (5 mm (0.197 in)).
FONOTECH PLUS 3.6 / 4.6 / 5.6 / 10.6: total thickness 7 / 8 / 9 / 14 mm (9/32 / 5/16 / 11/32 / 9/16 in); 0.3 / 0.35 / 0.4 / 0.6 kg/m² (0.061 / 0.072 / 0.082 / 0.12 lb/ft²); λ 0.036 W/mK (0.25 BTU·in/(h·ft²·°F)); ΔLw 32 / 32 / 33 / 32 dB (6 cm (2 3/8 in) concrete screed); s' 12 / 12 / 11 / 12 MN/m³ (44 / 44 / 41 / 44 lbf/in³).
FONOTECH PLUS: total recycled content 37.2% (62% in the polyester layer); 100% recyclable.
FONOTECH 5.6 ANTISCRATCH: 5 mm (0.197 in) PE with embossed reflective aluminum film + 6 mm (0.236 in) polyester, approx. 11 mm (7/16 in), 50 mm (2 in) side overlap; rolls 150 × 1000 cm (59 × 394 in) (15 m² (161 ft²)); ΔLw 36 dB (5 cm (2 in) screed, 100 kg/m² (20 lb/ft²)); λ 0.032 W/mK (0.22 BTU·in/(h·ft²·°F)); CP2.

PACKAGING

Impact sound insulation under floating screeds on concrete and hollow-block slabs.
Floors with radiant heating systems.
New residential and commercial buildings and renovations.
Joints sealed with dBred adhesive tapes; perimeter isolated with DBRED LF5 strips.

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