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Sika Decothane Ultra Base Coat, Low-odour One-part Polyurethane Base Coat, Exterior, Oxide Red, 15 L

Sika Decothane Ultra Base Coat, Low-odour One-part Polyurethane Base Coat, Exterior, Oxide Red, 15 L

Waterproofing
Sika

Sika is a global leader in specialty chemicals for the construction and industrial sectors. The company develops and supplies innovative products and systems for bonding, sealing, damping, reinforcing, and protecting structures. With a strong focus on sustainability and performance, Sika serves a wide range of applications including concrete production, waterproofing, roofing, flooring, and structural strengthening.

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General Specifications
Packaging 15 L
Width 2500.0 mm
Length m
Weight Kg
Usage Sika Decothane Ultra Base Coat is an exterior-use base coat for Decothane Ultra systems, applied by professionals. Suitable for new builds, refurbishments, detailing, and sensitive areas. Compatible with various substrates. Not for permanent water immersion or single ply membranes
Chemical Base One-component aromatic polyurethane (low-odour, cold-applied, elastic)
Usage Area Exterior
Color Oxide red (~RAL 3011)
Storage Conditions Product must be stored in original, unopened and undamaged packaging in dry conditions at temperatures between +0 °C and +25 °C. Always refer to packaging
Density ~1,45 kg/l approx. (+23 °C)
Consumption N/A

1-part low odour polyurethane liquid applied base coat for use in conjunction with Decothane Ultra systems

Sika® Decothane Ultra Base Coat is a 1-part, low odour, cold-applied, elastic, polyurethane base coat. It incorporates Sika's unique i-Cure technology.

  • The quick overcoating time provides early resistance to rain damage
  • The low odour characteristics makes it suitable for odour sensitive projects
  • A maintenance coat is easily applied when needed without the requirement to remove previous coats
  • 1-Part ready to use
  • Cold applied – requires no heat or flame
  • High solid content
  • Can be reinforced with Sika® Reemat Premium
  • Resistant to many common environmental influences
  • Easily detailed around complex geometries
  • Applied by roller
Usage
Sika® Decothane Ultra Base Coat may only be used by experienced professionals. The product can be used for the following roof waterproofing
applications:
A base coat for Decothane Ultra systems
  • Flat and sloping fully exposed roof structures
  • New construction and refurbishment projects
  • Horizontal and vertical detailing around penetrations, drains, roof lights and complex geometries
  • Failing roofs to extend the service life
  • Sensitive areas requiring low odour
The product can be used on the following substrates:
  • Fibre cement
  • Bitumen sheet membranes
  • Bituminous coatings
  • Bricks
  • Concrete
  • Ferrous metals
  • Paints / Coatings
  • Stone
  • Unglazed ceramic tiles
  • Wood
Please note:
  • The product is not suitable for permanent water immersion.
  • The Product is not suitable for detailing works on single ply membranes.
  • The Product may only be used for exterior applications
Advantages
  • The quick overcoating time provides early resistance to rain damage
  • The low odour characteristics makes it suitable for odour sensitive projects
  • A maintenance coat is easily applied when needed without the requirement to remove previous coats
  • 1-Part ready to use
  • Cold applied – requires no heat or flame
  • High solid content
  • Can be reinforced with Sika® Reemat Premium
  • Resistant to many common environmental influences
  • Easily detailed around complex geometries
  • Applied by roller
Packaging

15 litre metal containers
Refer to current price list for packaging variations
Colour

Oxide red (~RAL 3011)
Technical Information
Tensile Strength

Unreinforced

Reinforced

~5,6 N/mm2

~16,1 N/mm2

Service Temperature

-30 °C to +90 °C
Application Information
Ambient Air Temperature

+5 °C min. / +35 °C max.
Relative Air Humidity

20 % r.h. min. / 85 % r.h. max.
Dew Point

Beware of condensation.
The substrate and uncured applied membrane must be at least +3 °C above dew point to reduce the risk of condensation or blooming on the
membrane finish.
Substrate Temperature

+5 °C min. / +60 °C max.
Substrate Moisture Content

The Product can be applied on substrates with a moisture content of ≤ 4 %.
The substrate must be visibly dry with no standing water.
The following test methods can be used to determine the substrate moisture content:
▪ Sika®-Tramex meter
▪ CM-measurement
▪ Oven-dry-method
Pot Life

Sika® Decothane Ultra Base Coat is designed for fast drying. High temperatures combined with high air humidity will increase the drying process. Thus, material in
opened containers should be applied immediately. In opened containers, the material will form a film within 30 minutes.
Waiting Time / Overcoating

Ambient conditions

Minimum waiting time

+5 °C / 50 % r.h.

~14 hours

+10°C / 50 % r.h.

~6-8 hours

+20°C / 50 % r.h.~3-4 hours
+30°C / 50 % r.h.~3 hours

Note: After seven days, the surface must be cleaned and primed with Sika® Reactivation Primer before applying subsequent coats.

Times are approximate and will be affected by changing ambient conditions particularly temperature and relative humidity.