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Koster SL Protect - High Wear Resistant Cement-based Underlayment

Verified by manufacturer 2 months ago

Delta Membrane Systems Ltd

High wear resistant cement based and fast hardening, protective self-levelling indoor/ outdoor floor screed and underlayment for industrial, agricultural areas

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+44 (0)1992 523523 Website

Application

Application for fast repairs and protection in agricultural,

industrial, workshop, production facilities, commercial and private use buildings.

Description

High wear resistant cement based and fast hardening, protective self-levelling indoor/ outdoor floor screed and underlayment for industrial, agricultural areas.


Features and benefits:

  • A mineral based self-levelling underlayment with high resistance to chemical and mechanical stresses.
  • It is an early loadable, directly useable levelling layer over uneven or coarse concrete and cementitious screeds.
  • Due to its high chemical resistance it is used to protect against light and medium corrosion and serves as a slowly reacting sacrificial layer in areas of high chemical stress.
  • Consumption: approx. 1.9 kg/m² per mm layer thickness.
  • Cleaning: Clean tools immediately after use with water.
  • Packaging: (SL 286 025), available in 25 kg bag.
  • Store the material in a dry place; when stored in originally sealed packages between + 10 °C and + 30 °C it can be stored for a minimum of 6 months.


Safety:

  • Wear protective gloves and goggles when processing the material.
  • Observe all governmental, state, and local safety regulations while processing the material.
  • Eye contact – Flush immediately with water and consult physician. Do not rub eyes.
  • Skin contact – Wash off immediately with soap and water.

General information

Color

Grey

Material

Cement

Guidance for specification option:

Cement based underlayment/ screed.

Size

-

Manufacturer guidance

25 kg

Warranty description

Ten year

Uniclass

Pr_35_31_06_80 Smoothing and levelling underlay compoundsPrimary

CAWS

M10/19 Proprietary screeds to BS EN 13813

M10/160 Proprietary self smoothing levelling screeds

M50/460 Smoothing/ levelling underlayment compound

M40/460 Smoothing underlayment

M10/7 Proprietary quick drying levelling screeds

Specification data - Smoothing and levelling underlay compounds

Material

Cementitious.

Substrate

-

Manufacturer guidance

  • Substrate has to be sound and solid as well as free of bond inhibiting agents such as grease and oil.
  • Remove all bond breaking substances such as laitance, loose particles, dust, formwork release oil, etc.
  • The substrate can be prepared according to need by shotblasting, grinding, or sweeping and vacuuming.
  • Do not acid etch substrates or clean the substrate with chemicals.
  • Joints in the substrate have to be re-created in each successive layer; do not bridge expansion joints with KÖSTER SL Protect.
  • Concrete and screed substrates are primed with KÖSTER SL Primer to reduce absorption before application.
  • Non absorbent substrates are primed with KÖSTER VAP I 06 Primer.
  • Do not apply over adhesive residue.
  • The minimum tensile strength of the substrate for wheel trafficked areas is 1.5 N/mm².

Type

-

Manufacturer guidance

General:

  • Mix each 25 kg bag of KÖSTER SL Protect with 3.0 liters of potable water.
  • The water is placed in a clean mixing vessel and the powder added while constantly mixing.
  • Use a double paddle mixer and mix intensively for no less than 3 minutes until a flowable, lump free consistency is reached.
  • We recommend to always mix 2 bags with a total of 6.0 l of water at once.
  • When feathering out the material in very thin layers a maximum of 0.5 liters of water may be added per bag.
  • Distribute the material in the desired layer thickness directly after mixing.
  • Mix and distribute the material in a constant work flow to avoid visible work edges.
  • The material is self-levelling when working “fresh in fresh”.
  • While working larger areas use a KÖSTER Gauging Rake to distribute the material.
  • Rolling the surface with a KÖSTER Spiked Roller immediately after distribution creates a very smooth surface through better de-airing.
  • Install the KÖSTER SL Protect within 20 minutes.
  • Do not delay successive pours by more than 10 minutes to avoid visible work edges.
  • The surface quality of the underlayment depends on workmanship, layer thickness, and curing parameters so that variations from a sample surface may occur.
  • Moisture sensitive floor coverings and sealers may not be applied before the material has fully cured.
  • Install KÖSTER SL Protect in one layer and not in multiple lifts.
  • Depending on the temperature it may take between 24 and 72 hours for the material to attain a residual moisture content of less than 3 M%.
  • Only apply at temperatures between + 5 °C and + 30 °C.
  • Low temperatures will increase the pot life and high temperatures will decrease the pot life.
  • Protect KÖSTER SL products from premature drying through sun and drafting air currents.
  • When installing in wet areas apply a protective coating or system.
  • The surface appearance of the underlayment is dependent on the workmanship, layer thickness, and curing parameters.
  • There may be differences in appearance to test areas.
  • Do not install moisture sensitive floorings and coatings before the underlayment has completely cured to a residual moisture content of less than 3 M %, depending on layer thickness and environmental condtitions between 24 and 72 hours.
  • Sand the surface thoroughly before applying reactive resins.


Required tools:

  • Drill with basket mixer, BEBA mixer, compulsory mixer, mortar pump with compulsory mixer, transport and pouring tools, buckets, gauging rake, spiked roller.


After treatment:

  • Curing can be aided by covering the hardened material with polyethylene sheets.
  • This reduces surface shrinkage tension especially when the material has been applied in thick layers.

Performance:

-

Manufacturer guidance

  • Application temperature: + 5 °C - + 30 °C.
  • Pot life: approx. 30 min.
  • Mixed density: 1.9 g/cm³.
  • Compressive strength (7 days): > 25 N/mm².
  • Compressive strength (28 days): > 45 N/mm².
  • Bending tensile strength (7 days): > 5 N/mm².
  • Bending tensile strength (28 days): > 10 N/mm².
  • Resistant to foot traffic after approx. 3 hours*.
  • Modulus of elasticity: > 15000 N/mm².
  • Shrinkage: < 0.5 mm/m.
  • Layer thickness 5 - 30 mm, (can be feathered out to 3 mm).


*depending on temperature.

Sustainability data

Contains Red List materials

No

Recyclability

No

Recycled content

As defined in clause 7.8 of BS EN ISO 14021

0 %

Literature

KÖSTER The Green Pages of Construction Chemicals

KÖSTER The Green Pages of Construction Chemicals

Delta Detailing Brochure

Delta Detailing Brochure

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