Ultra Natural Insulating Lime Plaster Base Coat For Rendering & Plastering 15 litres (10kgs approx)

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£15.35
£15.35

Quick Overview

Ultra is a thermally insulating lime basecoat for rendering and plastering.


Coverage - Ultra is sold in 15 litre bags these weigh 10kg (approx) they yeild as follows


1 litre per mm of thickness over 1m2
One bag will cover: 1.5m2 at 10mm thick, 1m2 at 15mm thick & 0.6m2 at 25mm thick


Made using modern manufacturing techniques, Ultra’s formulation is based on traditional Natural Hydraulic Lime and light-weight mineral aggregates to make a product unique in the marketplace. Key benefits include:



  • Reduced heat losses through the wall

  • Enhanced resistance to salts

  • Fibre reinforced

  • Highly breathable

  • Builds out in thick layers

  • Mineral ingredients – guaranteed never to rot. 


Ultra Natural is a highly insulating lime plaster base coat that is five to ten times thermally more efficient than other plasters when tested in accordance with British Standards. This makes it the perfect plastering base coat for renovations, where it gives an additional insulation layer to internal walls and even more so when Ultra Natural is used as render on outside walls.


Thermally efficient pure lime basecoat. Insulation is given by blown glass granules within the mix. A lightweight, insulating lime base coat for rendering and plastering. Completely free from cement, gypsum, acrylic, ash or other unsuitable additives. Ultra natural can be applied in coats of up to 30mm thick to save time and money


A versatile, general purpose insulating plaster or render base coat suitable for most renovation and refurbishment projects. Principally for use on masonry and brickwork in good condition Use Solo as the top coat to finish.


Price is per 15 litre bag


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Surface Preparation
Remove dust, surface contaminants and loose or friable coatings. On dense, smooth masonry backgrounds or high suction backgrounds apply Natural Stipple for improved bond. Other primers are available for difficult substrates – please consult your supplier.
Mixing


Ultra can be mixed using a drum mixer, or in a tub using a plasterers paddle mixer. Mix with approximately 4 to 4.5 litres of clean water per bag; do not add anything else. Use eye protection and dust masks, and avoid creating excessive dust.


Application
Apply in coats of between 10 and 30mm thick to a prepared background.
Temperatures: above 5°C and below 30°C.
Reworking: avoid re-working
Further coats: after 2 to 7 days, once the coat has stiffened / hardened, but is still ‘green’.
Curing: cure each coat (see below) before further work.
Once applied, level with a straight edge and apply a mechanical key.

Careful consideration must be given to detailing of areas such as cills and drips, especially on sites exposed to high levels of wind driven rain.
Reinforcement mesh (Lime Green 910 mesh) should be used in the final coat of Ultra when it is used externally, with a 10% overlap.

Curing
Prevent all coats from drying out too rapidly.
Lightly spray each coat with water if it is hot or the product is drying too quickly.
Protect from adverse conditions such as frost, rain, strong winds and direct sunlight etc.
Adequate curing of a final decorative coat should be more stringent, ideally using a fully sheeted scaffold when outside.


Finish Coat
We recomend  Solo is applied once the Ultra has set, generally after 2 to 7 days (thickness and drying times dependent.)
Finishing coats should be applied in a uniform 3-6mm thick layer with a trowel.

 

Test

Result

Standard

Compressive strength @ 28 days N/mm² 

>1 (CSI) 

EN1015

Compressive strength @ 90 days N/mm² 

>2

 

Capillary water absorption kg/m².min 

W1 

EN1015

Bulk Density (Dry) grams / litre

700

EN1015

Vapour Permeability

<15

EN1015

Thermal Conductivity w/m.K (Tab.)

0.18

EN1745

Thermal Conductivity w/m.K (actual)

TBC

 

 

Health and safety

Risk Phrases

  • R36/37/38 Irritating to eyes, respiratory system and skin
  • R66 Repeated exposure may cause skin dryness or cracking

Safety phrases

  • S22 Do not breathe dust
  • S26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
  • S24/25 Avoid contact with skin and eyes
  • S36 Wear suitable protective clothing

 

This is not a specification. Trials should be undertaken on old surfaces & backgrounds to ensure compatibility. Lime plasters do not set or perform like gypsum or cement based materials.

 

Test

Result

Standard

Compressive strength @ 28 days N/mm² 

>1 (CSI)

EN1015

Compressive strength @ 90 days N/mm²

>2

 

Capillary water absorption kg/m².min

W1

EN1015

Bulk Density (Dry) grams / litre

700

EN1015

Vapour Permeability

<15

EN1015

Thermal Conductivity w/m.K (Tab.)

0.18

EN1745

Thermal Conductivity w/m.K (actual)

TBC

 

Downloads

Test Category


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