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Gyprock Ultra-Base MR 60 is a premium lightweight base coat with superior moisture and mould resistance. The product is tinted light blue for easy identification on the job.

Product Overview

Gyprock® Ultra-Base MR 60 is a setting type base coat formulation with a working life of approx 60 minutes from application. It is for the jointing of Gyprock plasterboard in all areas of the home. Its lightweight formulation is ultra-easy to apply and it offers enhanced moisture and mould resistance, making it ideal for use with Gyprock Aquachek™ in wet areas and protected exterior applications such as alfresco areas. Joints may be finished with any Gyprock topping or all-purpose compound and sanded smooth prior to decoration.

Typical Applications

Gyprock Ultra-Base 60 is typically used for the first and second coat in a three coat jointing system in residential and commercials walls and ceilings. Its mould & moisture resistant properties make it perfect for jointing Gyprock Aquachek and Gyprock EC08 Complete in bathrooms, wet areas and laundries and throughout the homes of asthma and allergy sufferers. Ultra-Base MR 60 is designed for application with hand tools, mud boxes, automatic tapers and other machine tools.
Ultra Base MR 60

Powerful Antifungal Agent

Resists mould and mildew

Hand and Machine Tool Applied

Easy application with a range of tools

Moisture Resistant

Suitable for wet areas

Plasterboard Jointing Compound Selection - Hand or Mechanical Application
Tape Coat Second Coat* Finish Coat*
Any of the following: Any of the following: Any of the following:
Base Coat 20
Base Coat 45
Base Coat 60
Base Coat 90
Ultra-Base MR 60
Easy Base Taping Compound
Premixed Total Joint Cement Multi-Purpose Compound
Wet Area Base Coat
Easy-Flow
Ultra-AP
Pro-Repair 10
Less Mess Multi-Purpose Compound
Base Coat 20
Base Coat 45
Base Coat 60
Base Coat 90
Ultra-Base MR 60
Easy Base Taping Compound
Premixed Total Joint Cement Multi-Purpose Compound
Wet Area Base Coat
Easy-Flow
Ultra-AP
Pro-Repair 10
Less Mess Multi-Purpose Compound
Jointmaster
Ultra-Top
Easy Finish
Easy Flow
Less Mess Topping Compound
Less Mess Multi-Purpose Compound
Premixed Total Joint Cement Multi-Purpose Compound
Ultra-AP
Pro-Repair 10 (over setting type base coats only)


Plasterboard Jointing System Selection - Tiled Areas
WALL Tape Coat Second Coat* Finish Coat*
Waterproof or water resistant Wet Area Base Coat
Ultra-Base MR 60
Wet Area Base Coat
Ultra-Base MR 60
Nil
Other areas Base Coat 20
Base Coat 45
Base Coat 60
Base Coat 90
Wet Area Base Coat
Ultra-Base MR 60
Easy Base
Base Coat 20
Base Coat 45
Base Coat 60
Base Coat 90
Wet Area Base Coat
Ultra-Base MR 60
Easy Base
Nil

* Setting-type products, such as Base Coat 20,45,60,90, Ultra-Base MR 60 & Pro-Repair 10 is not recommended to be applied over drying type products such as taping compounds, all-purpose and topping compounds.

Please be aware that Wet Area Base Coat is still the recommended jointing product for Fibre Cement sheets and AFS Logicwall. This is due to the increased strength & flexibility under any movement of the Wet Area Base Coat product in comparison to plaster based jointing products.

Also it is still recommended to apply a waterproof membrane over Aquachek & Ultra-Base 60 in areas subject to direct exposure to water, such as shower, bath and basin areas. This remains as per our current recommendations.

Technical Specifications

Product Options

Gyprock Ultra-Base MR 60 is available in a 16kg bag with a coverage of 13kg/100m2.

It has a shelf life of 1 year from date of manufacture. 

For product availability and to place an order, contact your nearest supplier.

Physical & Chemical Properties 

Specific gravity (H20=1) 1.4 - 1-6
VOC content (as specified by GBCA)

<1 g/L as VOC content per material

Product Manufacture

Gyprock Ultra-Base MR 60 is manufactured by CSR Gyprock in Australia to stringent product specifications.

Product Handling

Transportation and manual handling: Refer to the Gypsum Board Manufacturers of Australia (GBMA) website for recommended OH&S practices.

Storage: Store bags of compound in a dry environment, protected from the weather and out of direct sunlight. Tear bag open from top corner to dispense compound. Unused product which has been mixed with water should be discarded. Unused product in powder format should be stored in original bag: roll the top of the bag to loosely seal, and store in an airtight container.

Health and Safety

Safety Data Sheets are important documents in the construction industry and assist in the continuing focus on occupational health and safety on and off sites.

 

Installation Instructions

Installing to Standards

AS/NZS2589: Gypsum linings – Application and Finishing outlines the procedures for jointing and finishing of Gyprock plasterboard in conjunction with additional details contained in Gyprock Technical Literature.    

Mixing

Add compound to water and mix to a creamy consistency. Use the proportion of approximately 5kg to 3 litres of water. The mixture is immediately ready for use. Gyprock Ultra-Base MR 60 has a working life of about 60 minutes. Do not mix more material than can be used in 60 minutes.

Application

FIRST COAT

  1. Fill recess evenly and fully with compound.
  2. Bed in Gyprock Perforated Paper Tape centrally over the joint and cover lightly with compound. Apply at least 1mm thickness of compound under the tape.
  3. Bed tapes to butt joints and internal corner angles. Apply at least 1mm thickness of compound under the tape.
  4. Cover all metal corner beads and fastener heads.
  5. Allow compound to set and harden for at least 75 minutes before recoating.

SECOND COAT

  1. Apply a second coat of Gyprock Ultra-Base MR 60 to:
    1. Recessed edge joints to a width of about 180mm
    2. Butt joints to a width of about 400mm
    3. Metal corner beads to a width of about 200mm
    4. Fastener heads
  2. Allow compound to set and harden for at least 75 minutes before recoating. Ideally, the joint should be fully dry before the final coat is applied.

THIRD COAT

  1. Apply a thin final coat of any Gyprock topping or all-purpose compound.
  2. Allow approximately 24 hours for it to dry, then sand to a smooth finish using 180 grit sandpaper or 220 grit sanding mesh.

Resources

Gyprock makes available resources that provide comprehensive selection, design, installation and maintenance guidance. 

Installation Resources

Residential and commercial installation instructions.

View Resources

Manufactured for Life

Gyprock products are manufactured for life with all CSR products designed to achieve optimal performance when part of a CSR integrated system.

Certified Low VOC

Exceeds the GBCA specification for Volatile Organic Compound content according to independent testing.