TECSOUND® SY50 Self-Adhesive

Tecsound SY 50 (Also known as Tecsound S 50) is a premium acoustic membrane engineered to reduce sound transfer between separating floors, walls and ceilings. With its high mass and simple self-adhesive backing, it offers a fast, effective solution for retrofit and new-build projects where space is premium but acoustic performance is critical.

Key Features & Benefits

Self-Adhesive Backing: Easy to install — peel and stick directly to prepared walls or ceilings, saving time on site.
Versatile Use: Suitable for concrete, timber, plasterboard and drywall surfaces. Ideal for flat refurbishments, party walls, separating floors and bulkhead ceilings.
Minimal Build-Up: At just 2.5 mm thickness, it delivers high acoustic performance without significantly increasing floor or ceiling height.
Compatibility: Works seamlessly with other acoustic systems — underlay, floating floors, resilient channels.
Durable & Long-Lasting: Asphalt-free, rot-proof, and non-toxic, with excellent long-term stability. It doesn’t absorb water or support mould growth.
High Mass, High Performance: With a mass of 5 kg/m², TECSOUND SY50 is designed to dramatically reduce airborne noise transmission such as speech, TV and music. Made by the trusted Soprema brand and backed by independent acoustic test data.

Technical Specifications

Property	Value
Weight	5 kg/m² (37 kg per roll)
Thickness	2.5 mm (self-adhesive)
Dimensions	1220 mm x 6005 mm x 2.5 mm (7.38 m² per roll)
Installation Method	Peel-and-stick
Applications	Floors, walls, ceilings. DIY Friendly. Used in Residential, Commercial and Hospitality sectors.

Typical Applications

Retrofit soundproofing in leasehold flats: reduce voice and footstep noise to separate dwellings.
Studios and offices: control speech and media noise through partitions and ceilings.
Underfloating floors: combine with acoustic underlay (such as dB FFR, dB Matting, Hush Panel, Soundmass or Acoustilay) to tackle both impact and airborne noise.
Wall linings and bulkheads: install behind plasterboard mosaics or media walls to increase mass and reduce noise transmission.
Structural Noise: Deaden I-Beams / RSJ's with Tecsound SY 50. It's easily cut and fit onto steelwork to deaden vibrational noise transfer.

Tecsound Acoustic Performance Data

All performance data below is verified from manufacturer testing to EN ISO 140 and 717 standards. Results represent typical performance within full system constructions.

Product	Thickness (mm)	Density (kg/m²)	Airborne Rating (Rw)*	Impact Rating (ΔLw)**	Fire Rating
Tecsound SY50	2.5	5	+25 – 26 dB	≈ 22 dB	Euroclass B, s2, d0
Tecsound SY70	4	7	+28 dB	≈ 23 dB	Euroclass B, s2, d0
Tecsound SY100	5	10	+30 – 32 dB	≈ 24 dB	Euroclass B, s2, d0

*Rw (Weighted Sound Reduction Index) is tested as part of wall or ceiling build-ups.
**ΔLw (Weighted Impact Sound Reduction) is tested on a 200 mm concrete slab per EN ISO 140-8.

What does Rw mean?

Rw stands for Weighted Sound Reduction Index — it measures how well a system blocks airborne noise such as voices, TV or music between rooms or floors.

What does ΔLw mean?

ΔLw measures the reduction in impact noise (like footsteps or furniture movement) through a floor compared to no insulation. Higher ΔLw = better footfall reduction.

Why are results shown as a range?

Performance depends on the full construction build-up. Tecsound® always performs best when combined with dense materials such as acoustic plasterboard and rockwool.

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