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Resene Umbrella Additive

Resene Umbrella Additive


Resene Umbrella Additive is an additive for exterior waterborne coatings providing rapid protection from showers and light rain even before the coating has dried. Once applied, a coating containing Resene Umbrella Additive quickly starts to build a protective shell that then extends throughout the whole coating. Water is able to evaporate from the coating allowing it to dry but showers and light rain simply roll off leaving the still-drying coating firmly attached to the substrate. The Umbrella Effect will work in light showers only. Exterior painting should not be undertaken when medium or heavy rain is expected during the paint’s drying phase.

 

Guide table (mid humidity, windless day, indirect solar radiation):

 

Resene Umbrella Additive

The times in the guide table are indicative only - temperature, humidity, airflow and substrate elevation will affect these times although Resene Umbrella Additive is designed to work at high humidity where water evaporation is significantly reduced. Increased airflow and/or increased temperature will dramatically decrease the indicated times and elevations receiving direct solar radiation will also result in a decrease in time required to achieve the Umbrella Effect.

Comparison results of dosed and undosed white paint:

 
Umbrella Effect - White paints (20°C, windless day, indirect radiation)
  Dose Rate (vol% With Umbrella Additive Without Umbrella Additive %Drying Time Reduction
Sonyx 101 White 4 15 min 30 min 50
Summit Roof White 4 10 min 40 min 75
Lumbersider White 8 25 min 40 min 38
Lustacryl White 2 15 min 40 min 63
X-200 White 2 10 min 30 min 67

  Dose rate ml/L 20-25°C 10-15° C
Rockcote Classico 20 10-15 10-15
Rockcote Polymer Render 20 20-25 20-25
Rockcote Casamenti 20 10-15 10-15
Rockcote Matt Armour 80 25-30 not recommended

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Australia:
PO Box 924, Beenleigh, Queensland 4207
P: 1800 738 383. F: 1800 064 960
advice@resene.com.au
www.resene.com.au

New Zealand:
PO Box 38242, Wellington Mail Centre, Lower Hutt 5045
P: +64 (4) 577 0500, 0800 RESENE (737 363). F: (04) 577 0600
advice@resene.co.nz
www.resene.co.nz