Technical Datasheet STEPBOARD Impact sound reduction and de-coupling board
Material number
Length
Width, article
Material strength
Contents
Packaging
Colour
205833103
1m
60 cm
approx. 9 mm
6 m²
Board
green
205833201
approx. 4 mm
12 m²
205833205
approx. 15 mm
3.6 m²
Product features De-coupling and renovation board Very high dimensional stability Very high compressive strength High level of improvement in impact sound reduction Rot proof Thermal insulating properties Very low emission - EMICODE® EC 1PLUS
Advantages Easy application
Areas of application For decoupling For impact sound insulation
Existing test certificates Reaction to fire EMICODE licence
SCHOMBURG GmbH & Co. KG · Aquafinstr. 2–8 · D-32760 Detmold (Germany) · Tel. +49-5231-953-00 · Fax +49-5231- 953-333 · schomburg.com 1/4
22/06/2023
Technical Datasheet STEPBOARD Technical Data Material properties Product components Base material Sound deadening improvement factor ∆Lw with bonded tiles Sound deadening improvement factor ∆Lw with floating installation tiles Permissible traffic load, DIN EN 1991-1-1 Classification of the reaction to fire in accordance with DIN EN 13501-1
Sheet goods Polyester fibres 13 dB 20 dB 5 kN/m² Efl
Application Consumption
1 piece = 1 m x 0.6 m
Application technology Aids/tools Circular hand saw Jigsaw Carpet knife
Suitable substrate Concrete Cement screed (CT) Mastic asphalt screeds (AS) Calcium sulphate screeds (CA, CAF) Magnesia screeds (MA) Old coats made of ceramic, concrete and natural stone Wooden floor Levelling compounds
Suitable covering Vitrified tiles Ceramic with low water absorption < 0.5% (porcelain stoneware) Clinker Natural stone materials that are sensitive to discolouration and not translucent
Substrate preparation Requirement for substrate 1. 2. 3. 4.
Load-bearing Clean Dry Free of adhesion inhibiting substances
Preparing the surface 1. 2. 3. 4. 5. 6.
Prime absorbent substrates with ASO-Unigrund-GE or ASO-Unigrund-K. Clean non-absorbent substrates and prime with ASO-Unigrund-S. Surface irregularities can be compensated for with the SOLOPLAN-30-PLUS / SOLOPLAN-FA levelling compounds. Calcium sulphate screeds must be roughened and vacuumed. Prime calcium sulphate screeds with ASO-Unigrund-GE or ASO-Unigrund-K. Calcium sulphate screeds must be dry. (< 0.5% in accordance with the CM method on unheated substrates; < 0.3% in accordance with the CM method on heated substrates) 7. Observe technical information no.14.
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Technical Datasheet STEPBOARD Usage Application 1. Cut STEPBOARD boards with suitable tools. 2. Lay the boards with a gap of ≥ 5 mm to the adjacent building components (supports, assembly parts, etc.) in order to prevent acoustic bridges / straining. We recommend the RD-SK50 edging strips for this. 3. STEPBOARD is laid using the MONOFLEX-XL, LIGHTFLEX or SOLOFLEX thin-bed mortars or SOLOFLEX in thin-bed laying. The remaining surface coating work can be performed after approx. 24 hours. 4. For fast building progress, gluing with the SOLOFLEX-fast, CRISTALLIT-FLEX rapid setting thin-bed mortars or the MONOFLEX-FB rapid setting flowbed mortar is possible. The surface coating can be applied after approx. 3–4 hours here.
Application as a bonded impact sound and decoupling panel 1. 2. 3. 4.
After the primer / levelling compound has dried, apply the corresponding thin-bed mortar with a 6–10 mm notched trowel to the substrate. Insert the boards into the fresh adhesive mortar and butt-join them together. Avoid junctions. Tap the laid boards so that bedding covering the whole area completely is ensured. No adhesive mortar may get between the board joints. After the adhesive mortar has dried, cover the butt joints with commercially available masking tape (approx. 20–50 mm).
Application as a bonded impact sound and decoupling panel on wooden substructures 1. 2. 3. 4. 5. 6. 7. 8. 9.
Replace damaged areas in the wooden floor or use additional screws if necessary. Close any joints between boards using a commercially available acrylic jointing compound. Chipboard or oriented strand boards must be laid bonded, screwed and glued. Sand the floor boards and parquet, and prime with ASO-Unigrund-S. Surface irregularities can be compensated for using the SOLOPLAN-FA fibre reinforced floor levelling compound up to 20 mm in one application step. After the primer / levelling compound has dried, apply the corresponding thin-bed mortar with a 6–10 mm notched trowel to the substrate. Insert the boards into the fresh adhesive mortar and butt-join them together. Avoid junctions. Tap the laid boards so that bedding covering the whole area completely is ensured. No adhesive mortar may get between the board joints. After the adhesive mortar has dried, cover the butt joints with commercially available masking tape (approx. 20–50 mm).
Application as a renovation panel on walls 1. If using STEPBOARD in the walls (e.g. to compensate for recesses under tiles), the application substrate must be firm, load-bearing, free of old paints and suitable as a substrate for tiling. 2. After the primer / levelling compound has dried, apply the corresponding thin-bed mortar with a 6–10 mm notched trowel to the substrate. 3. Insert the boards into the fresh adhesive mortar and butt-join them together. Avoid junctions. 4. Tap the laid boards so that bedding covering the whole area completely is ensured. No adhesive mortar may get between the board joints. 5. In the transition area from the old covering and STEPBOARD boards, overcoat the joint that occurs by inserting commercially available, alkaliresistant glass scrim with the thin-bed mortar used.
Storage conditions Storage Dry and horizontal. 24 months
Disposal Product leftovers can be disposed of in household waste.
SCHOMBURG GmbH & Co. KG · Aquafinstr. 2–8 · D-32760 Detmold (Germany) · Tel. +49-5231-953-00 · Fax +49-5231- 953-333 · schomburg.com 3/4
Technical Datasheet STEPBOARD Notes Decoupling measures are special construction methods. We recommend agreeing on the design separately. The STEPBOARD 4 mm can be used on heated substrates without appreciable heat losses. STEPBOARD 9 mm and 15 mm have thermal insulating properties. Under thin-layered hot water or electrical panel heaters, the effectiveness when using the 4 mm board is increased by around 30%, by around 50% with the 9 mm board and by around 60% in conjunction with the 15 mm board. Border and structural movement joints should be carried over to or installed at the designated location; suitable means (e.g. edge strips) should be used to detach them! Movement joints must always be arranged in door/sill areas! STEPBOARD 9 mm and 15 mm have thermal insulating properties and are therefore only moderately or not suitable for use on heated constructions! The total thermal resistance of the coating structure must not exceed 0.15 m²K/W. Also see: Relevant guideline no. 9 "Use of floor coverings on panel heaters and coolers – requirements and notices" from the Bundesverband Flächenheizungen und Flächenkühlung e. V. (German Federal association for panel heaters and coolers)! Observe the technical data sheets of the products mentioned and the laying instructions from the surface coating’s manufacturer! When laying natural stone and synthetic stone, the product-specific properties of the coating materials (tendency to discolour, risk of curling, etc.) and the laying recommendations of the manufacturer must be taken into account. We recommend carrying out trial laying! Apply the RD-SK50 self-adhesive edging strips to the wall-floor transition and the rising building components in advance.
Planning, inspection of substrates and building site circumstances, laying, grouting and subsequent care of the work must be done in accordance with the relevant DIN standards and recognised rules of technology (e.g. the ZDB sheets of the Zentralverband Deutsches Baugewerbe e.V.) in the latest version.
The rights of the buyer with regard to the quality of our materials are based on our terms and conditions of sale and delivery. Our technical advice team will be happy to advise you in the case of requirements that exceed the scope of the application described here. In order to be binding, a legally binding written confirmation is required. The product description does not release the user from a duty of care. Lay a test area in the event of uncertainty. This version becomes invalid in the event of a new version being issued.
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