Parex Monorex GM

A one-coat or top coat finish, through coloured, weather resistant and breathable decorative render available in 48 standard colours

Units per pack




Unit Price

£18.95   + VAT


Our price

£18.95 £22.74 inc VAT


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Parex Monorex GM

Parex Monorex GM is a one or two coat, breathable, weather resistant and breathable decorating render for masonry and concrete walls. Available in 48 standard colours (special colours to order), the render provides an excellent finish and good surface hardening.

Parex Monorex GM is suitable for machine spraying or hand application and can be finished in a range of styles from medium scraped, light tyrolean to heavy roughcast textured finishes.
Monorex GM is suitable for rendering onto a range of masonry substrates;

Please note: Blocks with a close texture, generally classed as paint grade blocks, should not be rendered without an application of the substrate porosity regulator Micro Gobetis 3000.


Suitable for

Masonry and walls conforming to BS 5628-3 and constructed from the following:

  • Ultra-lightweight, lightweight & dense aggregate concrete blocks(1). n Bricks.
  • Clay blocks e.g. Porotherm(1)
  • Standard low and normal density lightweight aircrete blocks.
  • Breeze blocks (clinker)(1).
  • Stone/rubble stone.
  • Shuttered concrete(1).
  • Expanded clay insulation blocks(1).
  • Clean, sound, well adhered existing render. n Base coats conforming to BS EN 13914-1 n PAREX grey weather resistant base coats, e.g. MONOGRIS E, PARMUREX or TRADIREX.
  • Dry-stacked inter-locking modular wall units e.g. Durisol recycled timber blocks Durisol with MONOREX GM is NHBC approved for single skin external wall construction.
  • For below dpc applications and old substrates in accordance with BS8000 – 4 Code of Practice for Waterproofing, consult Parex. (1) These substrates will require a suction control coat of MICRO GOBETIS 3000.


Unsuitable for

  • Weak mortar or plaster (Gypsum) coated constructions.
  • 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.
  • Painted substrates – Unless treated with PARINTER. Contact Parex.



  • Medium Scraped
  • Spray Textured – from tyrolean style to heavy roughcast effect.
  • Smoothed Spray Textured

For additional information refer to the data sheet on Textured Mineral Finishes.

More product detail




G00 - Natural White, G10 - White Light, G20 - Off-White, J39 - Athens Sand

Delivery Information

All deliveries are for the Next Working Day, unless otherwise stated. Click here for more delivery information.