Product Data Sheet
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Davco® Davelastic 98

Davco® Davelastic 98

Additive for cement-sand slurry and cement-based tile adhesive

Davco® Davelastic 98 is a flexible polymer additive designed for use with Davco’s cement-based tile adhesives, ideal for fixing ceramic tiles, marble and natural stones onto concrete, cement render, rendered brickwork surfaces or over existing tiles.

  • Increased shear bond strength – when added to Davco’s cement-based tile adhesives
  • Increased tile bedding strength – especially for heavy stones and large format tiles
  • Increased flexibility of the adhesive system to cater for movement
  • Improve bond strength of renders/screed to cementitious substrate – when used as a bonding slurry
Product Data Sheet
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Usage

  • When mixed with Davco's cement-based tile adhesives, it can be used for fixing ceramic tiles, pavers, marble, slate and natural stones onto concrete, cement render, blockwork, rendered brickwork surfaces or over existing tiles, for wet area eg. bathroom, kitchens, swimming pools and spas.
  • When mixed with neat cement and sand, it can be used as a bonding slurry for cement-sand render over uneven concrete.
 

Advantages

  • Increased shear bond strength – when added to Davco’s cement-based tile adhesives
  • Increased tile bedding strength – especially for heavy stones and large format tiles
  • Increased flexibility of the adhesive system to cater for movement
  • Improve bond strength of renders/screed to cementitious substrate – when used as a bonding slurry

Packaging

  • 4 L pail
  • 20 L pail
  • 200 L drum

Colour

Milky white liquid

Product Details

Product Information

Shelf life

12 months from date of production

Storage conditions

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

pH-Value

9 ± 1
Technical Information

Mortar mix design

Bonding slurry (mixing ratio by volume)
1 part Portland cement + 1 part washed sand + Davco® Davelastic 98 to a brushable consistency

Tiles bedding
25 kg of Davco TTB 98 to 6.0–7.0 L of Davco® Davelastic 98
25 kg of Davco Super TTB 998 to 5.0–6.0 L of Davco® Davelastic 98
25 kg of Davcoflex 666 to 6.0–7.5 L of Davco® Davelastic 98

Application

Application Information

Ambient air temperature

5 °C min. / 40 °C max.

Substrate temperature

5 °C min. / 40 °C max.
Application steps

MIXING

As bonding slurry for rendering/screeding

  • Always shake Davco® Davelastic 98 container well prior to usage
  • Pour Davco® Davelastic 98 into a mixing container. Then, slowly add a mixture of cement and sand while mixing to a good brushable consistency.

As additive to Davco's tile adhesive

  • Always shake Davco® Davelastic 98 container well prior to usage
  • Pour Davco® Davelastic 98 into a mixing container. Then, slowly add Davco’s cement-based tile adhesives while mixing.
  • Mix continuously in circular motion using a low-speed mechanical mixer until a lump-free, creamy consistency and uniform paste is achieved.
  • Allow the mix to stand for 5 minutes. Re-mix for 15–30 seconds before applying onto substrate.

CLEANING OF EQUIPMENT

Clean all tools and application equipments with clean water immediately after use. Hardened or cured material can only be removed mechanically.

Documents

FAQ

What tile adhesive should I use in swimming pools?

Tile adhesives that are categorised under C2TES1 are recommended to be use in swimming pools.

C2TES1 = Improved deformable cementitious adhesive with reduced slip and extended open time.

  • C2 Tensile adhesion ≥ 1.0 N/mm² (after normal curing, water immersion, heat aging and freeze-thaw cycles).
  • T Slip ≤ 0.5 mm
  • E Open time ≥ 30 minutes
  • S1 Transverse deformation ≥ 2.5 mm and < 5 mm

Sika also recommends the use of epoxy tile grout for filling up grout joints in-between tiles in swimming pools.

Sika’s Tile Adhesive:

Sika’s Epoxy Tile Grout:

  • Davcopoxy 271