DuraPuds 615

DuraPuds 615

Water repellent plinth render

  • For rendering on concrete, lightweight concrete, brickwork, and plastic-based foam insulation, EPS/XPS
  • Suitable for plinths below ground level
  • High strength
  • Water repellent and diffusion open
  • Very low capillary suction
  • Prevents moisture rising from the ground
  • Coat thickness 3 - 15 m

Product calculator

Product facts


Cement-based powder containing polymer modifiers. Contains quartz sand with grain sizes up to 1.2 mm.


Available in cement grey.



Approx. 1.4 kg/m² per mm coat thickness.


20 kg PE-lined paper bags.



Expected Result



Surface preparation

Fixing dowels





Alfix A/S H.C. Ørsteds Vej 11-13 DK-6000 Kolding alfix.com
Declaration of performance
No. 2
EN 998-1:2010
Alfix DuraPuds 615
For external and internal
use on walls
Reaction to fire A1 Thermal conductivity λ10,dry ≤ 0,83 W/(m⋅K)
for P=50%
λ10,dry ≤ 0,93 W/(m⋅K)
for P=90%
(EN 1745 table)
Capillary water absorption W2
Water vapour permeability
≤ 25
Adhesion ≥ 0,08 N/mm² Durability NPD

Tile fixing

Tile fixing



Technical data

Working temperature

+5°C - +25°C


1.6 kg/litre mixed with Water

Working time

1 - 2 hours at +20°C

Water vapour diffusion

µ value: ≤ 25

Drying time

48 hours at min. +15℃

Compressive strength

> 8 N/mm²

Exposure class


Full strength

After 7 days at min. +15°C

Shelf life

Min. 12 months in unopened bag

How to use


Concrete, foundation blocks, lightweight concrete, and lightweight blocks.
Plastic-based foam insulation of expanded polystyrene (EPS) and extruded polystyrene (XPS) with a cementious fibre-reinforced surface.

For further information, please contact our Technical Service Department.

Surface preparation

The background should be dimensionally stable and free from dust, loose mortar residues, grease, salts, fouling, and other contaminations.
If necessary to improve render bonding, use dry or wet sandblasting prior to further treatment.
For concrete, lightweight and foundation blocks, it is recommendable to apply a preparatory roughcast made of cement/sand in a 1:1 ratio.
Alternatively, apply a ribbed contact coat of Alfix Durapuds 830 facade adhesive. Drying time: approx. 24 hours.

How to use

Add approx. 3.0 litres of clean, cold water per 20 kg powder. Pour water into a clean container and sprinkle the powder in while stirring until a lump-free consistency is obtained. Use mixing drill or concrete mixer. Leave the mixture to rest for a few minutes and remix briefly before use.

Without reinforcement
Apply Alfix DuraPuds 615 plinth render in a coat thickness of up to 10 mm using straight steel trowel. Once set, work rendered plinth with a float to achieve a smooth and even surface finish.

Reinforcement with glass fibre mesh
Use Alfix DuraPuds 615 plinth render in the Alfix facade insulation system for rendering onto EPS or XPS insulation boards.

Apply as a 2-coat treatment:
On the first day, apply render with straight trowel in a 3-4 mm layer thickness. Embed the Alfix mesh 4x4 mm into the fresh render immediately.
At joints, embed mesh with 10 cm overlap. Position mesh by pressing gently into the wet render using the trowel.
Observe that mesh is placed at the surface top of the render coat.
On the second day, apply a new coat of Alfix DuraPuds 615 plinth render to full coverage in a 3-4 mm thickness. Once set, work rendered plinth with a float to achieve a smooth and even surface finish.

Do not add additional water to render which has begun to set.
Exterior work with plinth render should only take place in dry weather at temperatures between +5ºC and +25ºC, and not in direct sunlight.
If rainy weather or temperatures below +5ºC are forecast, cover facades.
Avoid exterior rendering during the winter season.


Clean residues from tools with water before the mortar sets. Cement-based products harden when mixed with water, hence do not dispose of excess material by pouring into drainage system.

January 2021

Happy New Year! Team Alfix is back from Christmas holidays and ready to serve our good Scandinavian customers.

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