Sopro LZ 987 – Lightweight Mineral Aggregate

A lightweight mineral aggregate made from expanded glass granulate for use in conjunction with Sopro Rapidur® B5 rapid-set screed binder to produce compression-resistant, rapid-set, and early tiling, lightweight levelling layers with thermal and sound insulation properties. Suitable for all coat thicknesses upwards of 20 mm in bonded construction. For filling pipe penetrations, large voids, and sanitary service runs/assemblies. Ideal for refurbishment and renovation contracts. This aggregate can be laid to falls. Also suitable for use as a loose-fill/void filler.

ALSO PART OF THE SOPRO SMART® FLOOR RENOVATION SYSTEM

Can be used as part of the SOPRO SMART® FLOOR RENOVATION SYSTEM in conjunction with Sopro Rapidur® B5 rapid-set screed binder to produce compression-resistant, rapid-set and early tile-laying, lightweight levelling layers with thermal and sound insulation properties. Also particularly suitable for levelling out large irregularities, filling pipe penetrations, service shafts, large voids, and sanitary pipes and services. As a base for conventional screeds on a separating layer or insulation.

For bonded construction, the substrate should be strong, dimensionally stable, and free from adhesion impairing substances (e.g. dust, oil, wax, release agent, efflorescence, laitance, paint, lacquer and varnish residue, old flooring adhesive residue). For unbonded construction, the substrate should be strong. As a rule, the installation of a perimeter insulation strip is required to avoid sound transmission paths and for the subsequent laying of tiles or floor finishes.

Related Downloads

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Sopro LZ 987 SMART®_Lightweight Mineral Aggregate

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SMET Floor Screeds and Compounds Product Selector

NBSplus SMET National Building Specification Clauses

BIM SMET BIM Objects

Benefits of Sopro LZ 987 – Lightweight Mineral Aggregate

■ Mineral-based
■ Ideal for refurbishment/renovation contracts
■ Non-combustible
■ Sustainable- recycled material
■ Moisture-resistant and permanently dimensionally stable
■ Offering thermal and sound insulation
■ For levelling between pipes
■ Pumpable

*) For cement types, see Table 1
**) Given the wide variety of types of cement available on the market that are classed under the specified common types, a suitability test shall be performed prior to screed laying.

Technical Details for Sopro LZ 987 – Lightweight Mineral Aggregate

Mixing ratio 25 kg (1 bag) Sopro RapidurR B3 or Sopro RapidurR B5 : 36 kg

or 220 ltr (4 bags) Sopro LZ 987; approx. 13 – 15 ltr water 12.5 kg (1/2 bag) Sopro RapidurR B3

or Sopro RapidurR B5 : 18 kg

or 110 ltr (2 bags) Sopro LZ 987; approx. 6.5 – 7.5 ltr water

Working life Approx. 40 – 60 minutes (in conjunction with Rapidur B3)

Approx. 2 – 3 hours (in conjunction with Rapidur B5)

Overcoatable/loadable After approx. 4 hours with Sopro Rapidur B3; after approx. 12 hours with Sopro Rapidur B5.
Coat thicknesses ≥ 20 mm for bonded construction; ≥ 35 mm on separating or on insulation layer; ≥ 20 mm pipe cover.
Compressive strength Approx. 1 N/mm2
Thermal conductivity 0.075 W/m2 K
Impact sound reduction Up to 10 dB*
Aggregate size 4 – 6 mm
Coverage Sopro LZ 987: approx. 1.6 kg/m2 or approx. 10 ltr/m2 per cm coat thickness Sopro RapidurR B3 or Sopro Rapidur B5: approx. 1.2 kg/m2 per cm coat thickness
Dry apparent density Approx. 320 kg/m3 (with Sopro RapidurR B3 or Sopro RapidurR B5)
Fire rating A1 to DIN 4102
Tile format No size limit (min. tile thickness > 6 mm)
Max. bay size 100 m2
Live loads to EN 1991 A1, A3 and A3; max. area load 2.0 kN/m2, max. point load 1.0 kN/m2 (in conjunction with Sopro VS 582 self-levelling filler > 10 mm coat thickness)
Application temperature Bonded: From +5°C to +25°C (substrate, air, material) Unbonded: All temperatures

* Test stand value to DIN EN ISO 140-8 serving as a general guide. The performance of trial installations and measurements is therefore recommended, in each case, to establish the actual impact sound reduction index achievable on site.

Available in 9 kg bag (approx. 55 ltr)

Floor Screeds & Compounds from Smet Building Products Ltd have been used throughout Europe for over 30 years. Our comprehensive portfolio includes Calcium Sulphate Based Screed Binders, Self Smoothing Calcium Sulphate Based Screeds & Compounds, Cement-Based Screed Binders and Self Smoothing Cement Based Screeds, Lightweight (Flowing or Dry) Screeds & Compounds for Domestic, Commercial, Industrial and Design use. The SMET range has a Floor Screed solution for any building requirement.