Alububble Double Sided

Original price was: R2,415.33.Current price is: R2,222.18.

Roll Dimensions

40m x 1.25m





Fire Rating

B/B 1/2

Alububble Double-Sided Sisalation Foil offers a cutting-edge solution for sisalation insulation, designed to enhance both thermal insulation and water resistance in residential buildings. Its innovative use in roofing provides an essential barrier against radiant heat penetration, ensuring buildings remain cooler in summer and warmer in winter. This radiant barrier is ideal for ceiling insulation in both industrial and domestic settings, acting as a robust waterproof membrane and vapour barrier to combat condensation.

What is Alububble Double-Sided Sisalation Foil?

Alububble Double Sided Sisalation Foil is a sophisticated radiant barrier specifically designed to enhance the thermal insulation properties of residential and industrial buildings. This product plays a crucial role in minimizing heat build-up within roof spaces by reflecting radiant heat, thereby maintaining more stable indoor temperatures throughout the year.

Key Features and Specifications:

  1. Radiant Heat Control: It effectively reduces the temperature within the roof space, enhancing the performance of bulk insulation.
  2. Moisture Barrier: Acts as a robust water vapour barrier under roof tiles or sheeting, protecting structures from moisture and condensation.
  3. Safety and Environmental Considerations: The foil is non-toxic, non-carcinogenic, and does not attract rodents, ensuring a safe environment. Despite its high functionality, it is not recyclable but is designed to minimize waste during installation.
  4. Ease of Installation: Installation is straightforward without the need for specialized safety equipment, making it accessible for DIY projects.
  5. Durability and Compliance: Alububble is durable, with a long expected lifecycle and compliance with architectural specifications for various building frameworks.
  6. Physical Properties:
    • Dimensions: Each roll measures 40m in length and 1.25m in width with a thickness of 4mm.
    • Thermal and Fire Safety: Offers an R-value of 1.38 and has a fire rating of B/B 1/2, indicating its effectiveness in thermal resistance and safety in fire scenarios.


Alububble Double Sided Sisalation Foil
alububble white and black


Advanced Manufacturing Process:

Alububble Double Sided Sisalation Foil is produced through a modern continuous laminating process. This method involves the lamination of low-density Polyethylene air cells with Metalized Polyester (MPET) on one side and white polyethene on the other, adhering to ISO 9001:2008 standards. This innovative manufacturing process ensures the product’s effectiveness in reflecting heat and maintaining air quality, making it an ideal solution for both summer heat and winter cold.

Benefits of Using Alububble Double-Sided Sisalation Foil

Alububble Double-Sided Sisalation Foil is renowned for its multifaceted benefits, enhancing both the functionality and sustainability of buildings. Here, we explore the key advantages:

Enhanced Thermal Efficiency

Alububble’s reflective properties significantly reduce heat transfer, maintaining optimal indoor temperatures throughout the year. This thermal efficiency is quantified by an R-value of 1.38, indicating high resistance to heat flow. Importantly install Knauf Insulation or Soft Touch Aerolite in conjunction with Alububble.

Moisture and Vapor Barrier

The foil serves as an effective barrier against moisture and condensation, crucial in preventing water damage and maintaining structural integrity, especially in high-humidity areas.

Durability and Safety Of Allububble Sisalation Foil

Alububble is non-flammable and does not propagate fire, contributing to the overall safety of the building. Its robust manufacturing process ensures a long service life and excellent durability against environmental factors.

Cost-Effectiveness and Environmental Impact

Compared to traditional insulation materials, Alububble is cost-effective, reducing energy costs significantly during peak heating and cooling months. It also supports a smaller environmental footprint by enhancing the building’s energy efficiency.

Ease of Installation and Use

The lightweight nature of Alububble makes it easy to handle and install, ideal for DIY projects. It does not require special safety equipment for installation, making it accessible for non-professionals as well.

These attributes make Alububble Double-Sided Sisalation Foil a superior choice for those seeking efficient, durable, and eco-friendly insulation solutions.

Installation and Application Guide

Installation Steps for Alububble Double-Sided Sisalation Foil

  1. Preparing the Roof: Begin by fixing PVC-coated straining wire to the top and bottom purlins at specified intervals. For steel purlins, place galvanized straining wire at 383mm centres.
  2. Rolling Out Alububble: Unroll the Alububble down the slope of the roof. Ensure to cut the foil to the required length, adding an extra 200mm for adequate tensioning.
  3. Attaching to Eaves Purlin: Lay the Alububble square into the building’s structure and secure it to the Eaves Purlin using double-sided adhesive tape.
  4. Tensioning and Securing the Top End: Pull the top end of the Alububble to create tension and attach it securely to the apex purlin with double-sided tape.
  5. Overlapping Sheets: Place subsequent sheets to overlap the previous one by at least 100mm. Ensure that straining wires are positioned at the centre of these overlaps for added stability.
  6. Final Adjustments and Roof Sheeting: After fixing all sheets, lay the roof sheeting promptly to protect the Alububble. For white Alububble, ensure the white side faces down and the foil side faces up.
  7. Horizontal and Vertical Laying: Alububble can be laid either horizontally starting at the eaves or vertically for under-sheeting applications. When rolling out on top of the underlayment, secure it with staples or cap nails until the battens are installed.
  8. Batten Installation: Install battens at a 45-degree angle, maintaining a gap of an inch or two between each to facilitate a vent path from the drip edge to the ridge.
  9. Radiant Barrier Placement: For specific roofing types like standing seam metal roofs or corrugated products, adjust the placement of the radiant barrier accordingly, either directly on the deck or with an additional counter batten to create an air channel.
  10. Maximizing Thermal Efficiency: Use a double-sided foil roofing product to enhance the reduction of summer heat gain. Ensure the space between the roofing foil and the roof is well-ventilated to optimize performance.

By following these detailed steps, the installation of Alububble double-sided Sisalation Foil can be executed efficiently, enhancing the building’s thermal insulation and overall structural integrity.


Through the exploration of Alububble Double-Sided Sisalation Foil, we’ve uncovered a multitude of benefits that stem from its innovative design, focusing on thermal insulation, moisture resistance, ease of installation, and environmental considerations. This product not only stands as a testament to modern manufacturing ingenuity but also presents a compelling case for those looking to enhance the energy efficiency and structural integrity of their buildings. The detailed comparison with other insulation materials further positions Alububble as a superior choice, offering unmatched thermal efficiency and safety features.

Considering the broader implications, the adoption of Alububble double-sided Sisalation Foil could significantly impact the sustainability and cost-effectiveness of residential and industrial buildings. Its dual function as a vapour and radiant barrier, coupled with its environmental benefits, underscores its importance in today’s construction landscape. For those ready to take the next step towards optimizing their building’s insulation, you can begin your journey toward a more energy-efficient future by choosing to Order Now. Alububble’s role in advancing thermal insulation practices reinforces its significance not just as a product, but as a crucial component in the evolution of sustainable building technologies.


Q: What is the correct method for installing Alububble insulation? A: To install ALUBUBBLE® insulation, begin at the eaves (bottom) and lay it horizontally. Alububble can also be installed horizontally or vertically when used under sheeting. If installing over steel purlins, you may need straining wire. Make sure to overlap each new layer by 100mm over the one before it.

Q: Is an air gap necessary on both sides of foil insulation? A: Radiant barriers like foil insulation require an air space on at least one side to function effectively. This air gap allows the insulation to reduce the need for heating in winter and cooling in summer by reflecting radiant heat.

Q: How should foil-faced insulation be oriented when installed? A: The orientation of foil-faced insulation depends on the weather conditions. If it’s hot outside, the reflective side should face outward. Conversely, if it’s cold, the reflective side should face inward. It’s important not to press the foil side directly against a wall, as this will prevent the radiant barrier from working.

Q: Can you guide me on installing double reflective insulation? A: To install double reflective insulation, roll it out over the trusses and staple it down every 4 inches, ensuring it’s pulled tight. Overlap the edges of subsequent courses by 75mm and secure them with staples. Use a Reflectix® Foil Tape to seal the seams air-tight. Finally, install purlins over the insulation to complete the installation.