Fletcher Permastop Building Blanket Insulation
Fletcher Permastop Building Blanket Insulation is a glasswool blanket insulation product from Fletcher Insulation, designed for use under metal deck roofing and metal wall cladding in residential and commercial construction. It is faced with Sisalation reflective foil laminate, providing combined thermal, acoustic, and condensation control performance. Manufactured in Australia from up to 80% recycled glass content.
Specifications
- Material R-values available: R1.3, R1.8, R2.3, R2.5, R3.0, R3.2
- Nominal thicknesses: 55 mm, 75 mm, 100 mm, 130 mm
- Width: 1200 mm
- Roll lengths: 15 m (R1.3, R1.8); 10 m (R2.3, R2.5, R3.0, R3.2)
- Facing: Sisalation reflective foil laminate (non-permeable moisture barrier)
- Core material: FBS-1 Glasswool Bio-Soluble Insulation
- Recycled content: Up to 80%
- Acoustic performance: 75 mm product reduces rain noise by up to 18 dB(A) compared to uninsulated metal roof
- Combustibility: Non-combustible
- Country of manufacture: Australia
Applications
Installed as a continuous blanket under metal deck roofing and metal wall cladding in both residential and commercial buildings. Provides thermal resistance to reduce heating and cooling loads, reduces rain and hail noise transmission through metal roofs, controls condensation on the underside of metal cladding, and assists in preventing burning ember penetration in bushfire-prone areas.
Standards and compliance
GECA (Good Environmental Choice Australia) certified. CodeMark certified. Satisfies Bushfire Attack Level (BAL) requirements of 0-40 in roof applications and 0-FZ in wall applications per AS 3959-2009. Complies with Green Star Insulant ODP Emissions credit requirements.
Frequently asked questions
Which R-value should I specify to meet the Building Code of Australia requirements?
Many constructions require a Total R-Value of R3.2 or greater under the NCC. Fletcher Permastop is available in material R-values up to R3.2; the correctly installed total system R-value depends on installation configuration and should be verified against the applicable NCC energy efficiency provisions.
Does Permastop reduce rain noise on metal roofs?
Yes. The 75 mm product reduces rain noise by up to 18 dB(A) compared to a metal roof with no insulation, according to Fletcher Insulation's published acoustic performance data.
Is Permastop safe to handle on site?
Yes. The product uses FBS-1 Glasswool Bio-Soluble Insulation, which is classified as safe to use. The product is also non-combustible.
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FAQs
What is your return policy?
All refunds and returns are determined by the manufacturer's terms of sale. Change-of-mind refunds are not accepted, but all valid warranty claims will be managed by AKA Acoustics in compliance with consumer law.
How long will it take to receive my order?
Freight lead times will be provided upon order confirmation. Standard items typically ship within 4–6 weeks, while custom orders may take 6–12 weeks.
Is my payment information secure?
Yes, all payments are securely processed through Stripe and are protected under their Terms of Service. AKA Acoustics do not store any payment information ourselves.
How are freight costs calculated?
Freight costs are determined at the time of quotation to ensure accurate pricing based on your specific order. For any questions, please email sales@akaacoustics.com
How can I contact support?
For account inquiries, email accounts@akaacoustics.com. For order support, email sales@akaacoustics.com.