Product Data Sheet Show all documents

Parex® EHI GF

HYDRAULIC MINERAL RENDER FOR USE ON PAREXTHERM & PAREXDIRECT MINERAL RENDER SYSTEMS

Through coloured mineral-based hydraulic render for use with the PAREXTHERM and PAREXDIRECT render systems. The renders are available in 48 standard colours, can be used in conjunction with the PAREXTHERM and PAREXDIRECT render systems to provide a decorative finish. EHI GF is suitable for manual or spray application and can be finished to a scraped, light tyrolean or heavy roughcast effect. Where a medium grade finish is required please refer to EHI GM.  

  • Fine Grain
  • Range of finishing options
  • Can be hand or machine applied.
Product Data Sheet Show all documents

Usage

  • PAREXTHERM External Wall Insulation systems (EWI).
  • PAREXDIRECT render systems

Advantages

  • Fine Grain
  • Range of finishing options
  • Can be hand or machine applied.

Packaging

25 kg bags

Colour

COLOURS

Range of 48 colours

FINISHES

  • Fine Scraped 
  • Spray Textured
  • Ashlar cuts

It is possible to acheive a float/sponge/trowel smoothed finish, however this is only recommended for small areas such as smooth bands surrounding windows, plinths and small panels etc. The float sponge/trowel smoothed finish may vary in appearance, particularly due to different factors such as the line and level and condition of the substrate or the appearance of a slurry finish caused by over floating the surface. The latter may produce some micro cracking effect on the render surface which may affect the aesthetical appearance but does not affect its durability.  Dark colours are more likely to be affected.
For additional support refer to the data sheet on Textured Mineral Finishes and request the Parex Construction details specific for your application.

Product Details

Sustainability / Certifications / Approvals

APPROVALS / CERTIFICATES

  • ETA-11-0110 - PAREXTHERM EPS
  • ETA-04-0014 - PAREXTHERM SW  
Product Information

Composition

A coloured powder mixed with water, based on cement, hydraulic binders and hydrated lime micronized copolymers, fillers, siliceous sands, mineral pigments and specific admixtures.

Shelf life

12 Months from date of manufacture 

Storage conditions

Dry frost free condition

Maximum grain size

2.0 mm
Technical Information

Reaction to fire

A2 when used as part of an Parextherm EWI system, please consult for further details.

Application

Application Information

Mixing ratio

5-6 L per 25kg bag
Consumption

Consumption

Coverage

Coverage is provided as a guidance only, excludes wastage and will vary subject to substrate conditions and thickness applied.

  • Scraped @ 10 mm finish, 14 - 16 kg/m2 (1.6 - 1.8m2 per 25 kg bag)
  • Spray Textured, 12 - 14 kg/m2 (1.8 - 2.1m2 per 25 kg bag)
Application steps

EQUIPMENT

EQUIPMENT REQUIRED

  • Scraping trowel / I Bar.
  • Stainless steel spatula.
  • Stainless steel smoothing trowel.
  • Notched rule and straight edge.
  • Wooden float.
  • Sponge.
  • Clean tools in water after use.

Application by machine

Spray Render Machine

Constant Mix and Pump Machine

Pump Pressure

10-12 bar (water)

12 bar / 400 Water flow L/hr

Pumping distance/height

Up to 120 m/60 m approx

Up to 50 m/30 m approx

Power Source

Diesel

Electric - Based on PFT G4/G5.

Other machine settings may differ

MIXING

  • Water dosage: approximately 5-6 litres per bag.
  • Machine mixing time: 3 to 5 minutes. 
  • Mixing time cement mixer: 5 minutes approximately.
  • Mix whole bag, length of life of mixture approximately 1 hour depending on prevailing conditions.

APPLICATION

  • This must conform with the recommendations and specifications for the PAREXTHERM & PAREXDIRECT Mineral render systems and/or as directed by Parex

For PAREXTHERM systems to suitable insulations & PAREXDIRECT systems to PAREX approved render boards:

  • Apply a 3-5 mm base coat of MAITE, embedded with 355 AVU MESH. (Do not fix the mesh to the insulation and render over it). Leave the surface ridged or combed for receiving the EHI GM or EHI GF. Apply the EHI GM/EHI GF to the desired finish and required minimum thickness as detailed  below or as per the Parex project specification.
    For other applications consult Parex.

SPRAY TEXTURED 

  • Apply a level, compact minimum 10 mm thick coat. Allow to dry and then spray the Textured finish. 

MEDIUM SCRAPED EHI GM

  • Apply a level, ruled compact 13 mm thick coat, level the surface with a straight edge, spatula or trowel flat. Allow to dry (3-16) hours and depending on the substrate and drying conditions,  scrape the surface in small circular motions using a scraping tool, removing no more than 3 mm  from the surface. 
    This scraping process must remove any slight imperfections and bring the application to the   specified finished thickness. Each elevation must be scraped at the same stage, as early scraping will result in a slightly darker shade and later scraping in a lighter shade.The minimum finished   thickness after scraping is 15 mm. 
    After scraping, any dust on the surface should be removed by brushing with a clean soft bristle  brush. Always stand back and examine the whole surface for blemishes and unevenness. Errors  must be corrected at this stage as rectification later is not practical.

RUSTIFICATION/ASHLAR EFFECT

  • It is recommended that a minimum depth of render to the back of the rustification/ashlar cut should be no less than 10 mm. To achieve this depth will require the finished thickness of the main render to be increased to approximately 15 - 20 mm.

For ease of application and finish, avoid using AXEL 3000, ALGIREX or 751 LANKOLATEX in the top coat application of the trowel, float or sponge smooth finish.

UNSUITABLE FOR
Exposed vertical substrates with a backward incline above 10 ° - a backward incline may affect water run off and may have a tendency to hold moisture.

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