Product Data Sheet Show all documents

SikaScreed®-138

(former Davco® Floor Screed ECO)

HIGH QUALITY PREMIXED CEMENTITIOUS FLOOR SCREED

SikaScreed®-138 is a high quality premixed cementitious floor screed comprising of Ordinary Portland Cement, approved recycled materials, graded sands and chemical additives to meet stringent requirements. It is approved by the Eco-Iabelling authority in Singapore as a sustainable building material. SikaScreed®-138 provides good workability by simply adding water to mix on site and is ideal for casting onto new or old concrete floor.

  • Non-toxic.
  • Premixed to ensure good consistent quality and mix.
  • Easy to use by simply adding water.
  • Prepacked for convenience in handling.
  • Eliminates all surface crack lines.
  • Good weather resistance and high durability.
  • Certified as a Green Label Product.
Product Data Sheet Show all documents

Usage

SikaScreed®-138 is suitable for use as a normal screed on new concrete substrates, or to repair old worn-out substrates in residential and industrial floors. It can be used for internal as well as external applications.  

Advantages

  • Non-toxic.
  • Premixed to ensure good consistent quality and mix.
  • Easy to use by simply adding water.
  • Prepacked for convenience in handling.
  • Eliminates all surface crack lines.
  • Good weather resistance and high durability.
  • Certified as a Green Label Product.

Packaging

40 kg/bag

Colour

Grey Powder

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

Singapore Green Building Product (Leader) Cert. No. SGBP 4194
Product Information

Shelf Life

12 months from the date of production

Storage Conditions

Store properly in original, unopened and undamaged sealed packaging in dry conditions. Keep away from direct sunlight and frost.

Density

2,000 ± 100 kg/m³

(Wet)

Maximum Grain Size

5 mm
Technical Information

Compressive Strength

25 to 40 N/mm²

(ASTM C109 : 2016a)

Tensile Strength in Flexure

> 2 N/mm²

(ASTM C348 : 2014)

Shrinkage

No crack

(Continho Ring)

Flow Rate

80 - 120 %

(ASTM 1437 - 2015)

Water Absorption

< 5%

(ASTM C413 : 2001 (Reapproved 2012))

Water retention

> 90 %

(BS 4551 : 2005 + A2 : 2013)

Application

Application Information

Mixing Ratio

4.2 - 6.0 ltr of water / 40 kg bag

Layer Thickness

10 - 40 mm per layer

Pot Life

40 minutes after mixing

Setting Time

Stiffening Time

1 N/mm²≤ 6 hrs
2 N/mm²≤ 7 hrs
Consumption

Consumption

2.2 - 2.5 m² / 10 mm thick / 40 kg bag
Application steps

SUBSTRATE PREPARATION

Remove all dust, oil and debris. Dampen the dry concrete surface before application of SikaScreed®-138.
For old worn out substrate, the surface should be hacked off and primed with bonding slurry coat before applying SikaScreed®-138.

 

MIXING

Mix with a site drum mixer for 3 - 5 minutes until the desired homogeneous mix is achieved. Ensure that it is free of lump before use.

APPLICATION

Ensure that the substrate is damp and clean without any ponding water. 

A bonding slurry coat should be applied before screeding and it consists of 1 part of SikaLatex®-751 or SikaLatex®-1000 mixed with approximately 0.5 to 1 part of SikaScreed®-138. A site trial can be conducted if necessary to ensure that the consistency of the slurry coat is suitable. The mixed SikaScreed®-138 mortar is then poured onto the slurry coat wet-on-wet. Compact and finish the screed in accordance to standard practice using a suitable float or trowel.

For screed thickness greater than 40 mm, the application can be done in multiple layers, ensuring that the previous layer has dried and then applied with bonding slurry coat. Welded steel mesh, e.g. A8 size and above, can also be laid within the screed during application to prevent cracking.   

CURING TREATMENT

In hot ambient temperature, the screed should be cured with water spray for at least 3 days. It is important to protect the product during placement and whilst curing from direct sunlight and winds. This is to prevent rapid dehydration or desiccation (excessive moisture loss).

 

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