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Melbourne Underlay
Engineered Flooring

Melbourne Underlay

Melbourne Underlay generally refers to a thin layer of cushioning made of materials such as sponge rubber, foam,

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Flooring expert at Mr Floor Melbourne

17 December 2018
5 min read
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Engineered timber underlays often use closed-cell plastic foam. For instance, in commercial projects and body corporate areas like investment properties, we suggest underlays 2mm to 3mm thick. These sizes block sound and act as vapor barriers.

Thickness and Quality of Underlays for Engineered Timber Flooring

1. Standard Residential Underlays (3mm Foam)

  • Made from closed-cell plastic foam, like PE foam.
  • Affordable and easy to install.
  • Provide basic cushioning and reduce some noise.
  • Good for regular homes where noise is not a big problem.

2. High-Performance Underlays (5-Star Rubber)

  • 5-star acoustic rubber underlays fit commercial projects, apartments, and body corporate rules.
  • Made from dense recycled rubber or rubber-cork mixes.
  • They block noise very well, reducing footstep sounds and vibrations.
  • They help floors stay stable and last longer.
  • Needed in investment and commercial buildings to meet noise rules like Australia’s BCA.

3. Specialty Underlays for Extra Benefits

  • Acoustic Underlay (5mm-10mm Rubber/Felt): Made for apartments and buildings with noise limits. It reduces footstep sounds and works well in busy places.
  • Moisture-Resistant Underlay (With Vapor Barrier): Used on concrete slabs or wet areas. It stops moisture from harming floors.
  • Eco-Friendly Underlay (Cork or Felt-Based): Made from natural or recycled materials. It provides good thermal and sound insulation and is better for the environment.
Underlay Installation
Underlay Installation

Installation

The underlay has a plastic strip on one side that you place against the wall. The other side has sticky tape. First, unroll the sheet along the longest wall.

Next, put the next roll tightly against the first. Make sure the plastic edges overlap. After that, start laying floorboards from the longest wall’s edge.

Keep laying underlay and floorboards until the whole room is covered. Leave a small gap between the walls and underlay. Finally, use a utility knife to cut extra material around vents and corners. This keeps things neat.

Melbourne Underlay
Melbourne Underlay

What is Underlay?

Underlay usually means a thin layer made from materials like sponge rubber, foam, cork, felt, or crumb rubber. We put this layer under floors such as engineered timber, vinyl, and laminates. It helps protect the floor from moisture, sound, and heat. Moreover, it adds comfort and makes your floor last longer.

Conservatories

Perfect timber floors and engineered flooring resist temperature changes well. Therefore, they work well in conservatories. This is true even though the temperature changes often in these spaces.

Space Suitability

Engineered flooring fits many spaces. For example, they are suitable for living rooms, kitchens, and other areas.

Living Spaces

Living rooms have stable temperatures, low moisture, and low foot traffic. Consequently, these conditions make them perfect for engineered floorboards with good underlay.

Kitchens

You can install engineered flooring in kitchens. However, you must clean spills quickly. Otherwise, liquids can damage the floor. Thus, keep your floor dry to make it last longer.

Underlay Usage

We supply underlay when installing laminate or engineered floors. In addition, this layer protects against moisture. Also, it helps reduce noise, making the room quieter.

Thickness and Quality

Engineered timber underlays often use closed-cell plastic foam. For instance, in commercial projects and body corporate areas like investment properties, we suggest underlays 2mm to 3mm thick. These sizes block sound and act as vapor barriers.

Thickness and Quality of Underlays for Engineered Timber Flooring

1. Standard Residential Underlays (3mm Foam)

  • Made from closed-cell plastic foam, like PE foam.
  • Affordable and easy to install.
  • Provide basic cushioning and reduce some noise.
  • Good for regular homes where noise is not a big problem.

2. High-Performance Underlays (5-Star Rubber)

  • 5-star acoustic rubber underlays fit commercial projects, apartments, and body corporate rules.
  • Made from dense recycled rubber or rubber-cork mixes.
  • They block noise very well, reducing footstep sounds and vibrations.
  • They help floors stay stable and last longer.
  • Needed in investment and commercial buildings to meet noise rules like Australia’s BCA.

3. Specialty Underlays for Extra Benefits

  • Acoustic Underlay (5mm-10mm Rubber/Felt): Made for apartments and buildings with noise limits. It reduces footstep sounds and works well in busy places.
  • Moisture-Resistant Underlay (With Vapor Barrier): Used on concrete slabs or wet areas. It stops moisture from harming floors.
  • Eco-Friendly Underlay (Cork or Felt-Based): Made from natural or recycled materials. It provides good thermal and sound insulation and is better for the environment.
Underlay Installation
Underlay Installation

Installation

The underlay has a plastic strip on one side that you place against the wall. The other side has sticky tape. First, unroll the sheet along the longest wall.

Next, put the next roll tightly against the first. Make sure the plastic edges overlap. After that, start laying floorboards from the longest wall’s edge.

Keep laying underlay and floorboards until the whole room is covered. Leave a small gap between the walls and underlay. Finally, use a utility knife to cut extra material around vents and corners. This keeps things neat.

Last updated: 12 August 2025

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admin

Flooring expert at Mr Floor Melbourne.