follow this how to install aerolite guide for a proper installation
Aerolite Installation Guide for DIY installations

How to Install Aerolite Insulation: Step-by-Step Guide

This “how to install aerolite” guide provides a comprehensive step-by-step process to ensure you install Aerolite insulation safely and efficiently, even if you’re new to DIY projects. By following these instructions, you can transform your home into a more energy-efficient and environmentally friendly space. Let’s get started!

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Here’s a step-by-step guide to help you through the installation process:

1. Materials and Tools Needed to Install Aerolite:

  • Aerolite insulation rolls
  • Measuring tape
  • Long wood saw (for cutting insulation)
  • Protective clothing: long sleeves, gloves, dust mask, and safety goggles
  • Stepladder
  • Portable light

2. Preparation Before Installing Aerolite:

  1. Safety First: Wear appropriate protective clothing to prevent skin irritation from fiberglass.
  2. Measure Your Roof Space: Determine the distance between your roof beams (joists) to cut the insulation to the correct width.
  3. Calculate Insulation Requirements: Measure the total area to be insulated and add an extra 8-10% to account for overlaps and adjustments.

3. Cutting the Insulation:

  1. Keep the Insulation in Its Packaging: While still compressed in its packaging, place the roll on a flat surface.
  2. Measure and Mark: Mark the required width on the packaging, adding approximately 50mm to the beam width for a snug fit.
  3. Cut the Insulation: Using a long wood saw, cut through the roll along the marked line, ensuring a straight cut to avoid gaps during installation.

4. Aerolite Installation Steps:

  1. Positioning: Start at one end of the roof space. Place the cut piece of Aerolite between the beams, directly on top of the ceiling boards.
  2. Rolling Out: Unroll the insulation carefully, ensuring it fits snugly between the beams without compressing the material, as this can reduce its effectiveness.
  3. Handling Obstacles:
    • Electrical Wiring: Lift electrical wires above the roof insulation to keep them accessible and prevent overheating.
    • Downlights: Cut a circular gap around each downlight to allow heat to dissipate and prevent potential fire hazards.
  4. Joining Sections: When you encounter off-cut pieces, place them side by side to fill gaps, ensuring there are no spaces left uncovered. Overlap joints slightly to maintain continuous coverage.
  5. Avoid Compression: Ensure the glasswool insulation is not compressed, as its thermal resistance relies on the air pockets within the material.
  6. Trapdoor Insulation: Don’t forget to insulate the trapdoor by attaching a piece of Aerolite to its upper side.

5. Final Checks:

  • Coverage: Ensure the entire ceiling area is covered without any gaps, as even small uncovered areas can significantly reduce insulation efficiency.
  • Safety Clearances: Double-check that all downlights and heat-producing fixtures have adequate clearance.
  • Clean-Up: Dispose of any insulation scraps properly and clean the work area to remove any residual fibers.

For a visual demonstration, you can refer to the following video:


By following these steps, you can effectively install Aerolite insulation, enhancing your home’s thermal efficiency and comfort.