PROREND BASECOATS
Hard-Working Render Basecoats

ProRend render basecoats are a range of factory-batched proprietary renders based on Portland cement. All are supplied as dry mortars that only need mixing with clean water.

Application reference

  • For all ProRend renders BS EN 13914-1:2016 Design, preparation and application of external rendering and internal plastering; part 1, external rendering to be followed at all times.
  • Other advice and guidance is available in BS 5262:1991 Code of practice for external renderings, predecessor to BS EN 13914, and BS 8000-10:1995 Workmanship on building sites; code of practice for plastering and rendering.

General

  • Surface preparation requirements for ProRend render basecoats are the same as for ordinary sand and cement renders. Surfaces must be clean, suitably dry, sound and free from anything that may interfere with the adhesion of the materials to be applied.
  • Only clean water fit for drinking should be used for gauging.
  • Scaffolding must be independently tied to allow uninterrupted application.
  • Masking should be used to give protection to adjacent work and to give clean straight edges. It should be removed immediately after finishing.
  • Remove splashes of material from glass or aluminium immediately as they may etch the surface and leave a permanent mark.
  • Walls should be protected from rain or other inclement weather during application and curing, ProRend renders should not be applied to substrates which are frost laden or have recently been exposed to prolonged rain.
  • When applying in hot weather, it is advisable to ensure that work coincides with the shaded areas of the building.
  • Local weather and site conditions must be taken into account by the applicator before any ProRend product is applied.

Temperature

  • ProRend render basecoats should be applied between 5°C – 30°C. Materials should not be applied if temperatures are expected to drop below 5°C within 24 hours.

Batching

  • ProRend materials applied to a render elevation should either be of the same batch number or thoroughly mixed together to ensure colour consistency.

Curing and Protection

  • Care must be taken to protect cement products from rapid drying conditions such as exposure to direct sunlight or drying winds. In these conditions it should be kept evenly damp for 3 - 7 days by lightly spraying periodically with clean water. This is to ensure complete hydration of the cement.
  • Polythene or Hessian sheeting is recommended during curing and should be arranged to hang clear of the face of the wall in such a way that it does not form a tunnel through which the wind
    could increase the evaporation of water from the rendering. Intermittent contact with the render must be avoided as this may cause a patchy appearance.

Storage

  • Cement based ProRend renders should be stored off the ground, under cover in dry conditions.
  • ProRend Resin renders should be stored in dry cool conditions at a temperature greater than 5 o C. Protect from sunlight and sources of direct heat. Containers should be kept sealed when not in use and stacked no more than four high.
Depending on what surface you are applying render to, you may need a basecoat applied first. The correct basecoat will ensure that the render adheres strongly and cures evenly. Our technical team can help you choose from the render basecoats below.

PROREND Basecoat Selector

ProRend basecoats are a range of factory batched proprietary renders based on Portland cement. All are supplied as dry mortars which only require addition of clean water and mixing.
7kN Dense Concrete Block3.5kN Dense Concrete BlockLightweight BlockExisting Render UnpaintedNew Sand & CementRender Carrier BoardBrickworkPre-cast ConcreteICF: Insulated Concrete FormExpanded PolystyreneMineral Fibre Insulation
Float*
Rapid*
Prep
Lite

† Applied in conjunction with specified sundry items | * Subject to specification

PROREND Float

ProRend Float is a high quality factory manufactured dry mortar especially suited to masonry substrates such as blockwork with normal suction.

Versatile in use, ProRend Float is a hard-working basecoat for thin coat renders. It can also be used as a great value and modern alternative to sand and cement. Hand applied or sprayed, complete and ready to use – just mix the quantity you need with clean water. ProRend Float contains plastersizer , binding agents and lightweight minerals and can be applied in one coat.

ProRend Float can be finished with float and sponge for a smooth surface, then painted. Alternatively, can be finished with a thin coat render for a modern look.

Features

  • Lightweight lime sand cement render
  • Hand or machine applied
  • Ideal substitute for traditional sand and cement avoiding on-site mixing and gauging
  • Suitable basecoat for all ProRend decorative renders or masonry paint
  • Can be smooth finished, sponge textured or keyed to receive a subsequent coat

Ideal Substrates

  • 7kN blockwork
  • 3.5kN blockwork
  • New sand and cement
General Information
Packaging25kg
Bags / pallet40
Water/ L~5.7
Coverage kg/mm/m21.39
Shelf Life, months~6
Curing mm/day1
Technical Data EN 998-1: 2010
L1 - Bulk Density, kg/m3~1.30
L1 - Set Mortar Density, kg/m31.40
L2 - Comprehensive Strength, N/mm2~3.00
L8 - Water vapour permeability, μ (EN 1745:2002 4.2.1 Table A12)5/20
Reaction to fireA1
Adhesion≥ 0.08 N/mm2
Fracture patternA,B or C
Water absorptionW2
Water vapour diffusion coeffµ 5/20
Thermal conductivity λ:
  • ≤ 0.39 W/mK (P=50%)
  • ≤ 0.43 W/mK (P=90%)
  • EN 1745 Table A12
Additional Technical Data
Maximum grain size, mm~2.00
E module, coefficient of elasticity, N/mm2~2,800.00
Bending strength, N/mmsup>2~1.40
Mortar group, DIN V 18550PII


PROREND Prep

ProRend Prep is a high quality factory manufactured dry mortar especially suited for levelling and renovation on mineral and synthetic backgrounds. It is well suited to low and high suction backgrounds such as lightweight block or pre-cast concrete.

Features

  • Hand or machine applied
  • Ideal for substrates with variable or wide-ranging suction
  • Suitable basecoat for all ProRend decorative renders or masonry paint
  • Can be smooth finished, sponge textured or keyed to receive a subsequent coat

Ideal Substrates

  • Lightweight blockwork
  • Existing render unpainted
  • Brickwork
  • Pre-cast Concrete
General Information
Packaging25kg
Bags / pallet40
Water/ L~8
Coverage kg/mm/m21.1
Shelf Life, months~6
Curing mm/day1
Technical Data EN 998-1: 2010
L1 - Bulk Density, kg/m3~1.10
L1 - Set Mortar Density, kg/m31.20
L2 - Comprehensive Strength, N/mm2~3.50
L8 - Water vapour permeability, μ (EN 1745:2002 4.2.1 Table A12)5/20
Reaction to fireA2
Adhesion≥ 0.08 N/mm2
Fracture patternA,B or C
Water absorptionW2
Water vapour diffusion coeffµ 5/20
Thermal conductivity λ:
  • ≤ 0.45 W/mK (P=50%)
  • ≤ 0.49 W/mK (P=90%)
  • EN 1745 Table A12
Additional Technical Data
Maximum grain size, mm~1.00
E module, coefficient of elasticity, N/mm2~3,300.00
Bending strength, N/mmsup>2~1.70
Mortar group, DIN V 18550PII


PROREND Lite

ProRend Lite is a high quality lightweight polymer modified factory manufactured dry mortar. It is ideal for use on insulation and render carrier boards as a basecoat for the ProRend Colourtex range of decorative finishes.

Features

  • Hand or machine applied
  • Ideal basecoat for ProRend Colourtex range of decorative renders or as a keycoat for other ProRend basecoats
  • Can be smooth finished, sponge textured or keyed to receive a subsequent coat

Ideal Substrates

  • Render carrier board
  • Insulated concrete form (ICF)
  • Expanded polystyrene (EPS)
  • Mineral fibre insulation
General Information
Packaging20kg
Bags / pallet42
Water/ L~7
Coverage kg/mm/m20.95
Shelf Life, months~6
Curing mm/day1
Technical Data EN 998-1: 2010
L1 - Bulk Density, kg/m3~0.90
L1 - Set Mortar Density, kg/m31.00
L2 - Comprehensive Strength, N/mm2~4.00
L8 - Water vapour permeability, μ (EN 1745:2002 4.2.1 Table A12)5/20
Reaction to fireA2
Adhesion≥ 0.08 N/mm2
Fracture patternA,B or C
Water absorptionW2
Water vapour diffusion coeffµ 5/20
Thermal conductivity λ:
  • ≤ 0.39 W/mK (P=50%)
  • ≤ 0.43 W/mK (P=90%)
  • EN 1745 Table A12
Additional Technical Data
Maximum grain size, mm~1.00
E module, coefficient of elasticity, N/mm2~3,000.00
Bending strength, N/mmsup>2~1.90
Mortar group, DIN V 18550PII


PROREND Lime Cement Primer

Solvent free, suction stabilising primer for full and even bonding of render and plaster.

Features

  • Ideal for strong or irregular suction substrates
  • Ideal for application in high temperatures
  • Suitable for internal and external use
  • Apply with block brush, roller or spray gun

It is possible to dilute Lime Cement Primer in the ratios displayed below (Lime-cement primer : tap water) – refer to technical information datasheet for application details

General Information
Coverage~100m2 per can undiluted
Packaging10 ltr can
Shelf Life, months2 years, stored in cool and frost-free conditions
pH8-10
Drying Time24 hrs
Strong suction masonry / cellular concrete1:2 – 1:4
Normal suction masonry / sand-lime brick1:4 – 1:6
High temperatures1:4


PROREND Deep Primer

Solvent free, deep penetrating stabilising primer for weak or powdery substrates.

Features

  • Ideal for renovations
  • Suitable for internal and external use
  • Apply with block brush
General Information
Coverage~0.4l/m2 or 25m2per can
Packaging10 ltr can
Shelf Life, months2 years, stored in cool and frost-free conditions
pH7-9
Drying Time24 hrs