Resista AK 50mm insulation
Firestone AK Resista Insulation Board (50mm)
Selected for use on EPDM flat roof systems, high quality Firestone insulation board for trade and DIY roofing. Straightforward to apply, long lasting, superior performance.
High-performance polyiso foam (PIR) gives Resista AK boards outstanding thermal resistance and compressive strength. Improve thermal ratings and future proof your flat roofing project with the latest insulating technology. Give your flat roof longevity and make the most of your project with Firestone insulation.
- Long lasting solution
- Ideal for EPDM flat roof systems
- Improved thermal ratings
- Sheet size 600mm x 1200mm
- Thickness 50mm
Specially selected for use with:
- EPDM flat roofing systems
Resista AK is available in two grades:
- Resista AK 50mm
- Resista AK 120mm
Features and benefits of Firestone Resista AK insulation:
High performance polyiso foam technology (PIR) suitable for both commercial and domestic applications.
- Global Warming Potential (GWP) of less than 5
- Zero Ozone Depletion Potential (ODP)
- Outstanding thermal resistance
- Improves energy consumption
- UL Class A rating for fire resistance
- Simplified installation typically reduces labour time
Customer Service and Delivery
- Orders placed before 12pm will be processed the same day for fast delivery (Mainland UK).
- Collection available from Alfreton, Derby by appointment.
- For further product information or after sales service please contact our friendly team by phone, email or chat.
Contact our team to discuss setting up your trade account. Benefit from preferential pricing, a dedicated account manager, samples and marketing materials and much more. Give us a call now on 01773 441 947.
Installing Firestone Resista insulation boards
As with any major flat roofing project, preparation is important to facilitate a successful installation. Ensure the substrate is free from debris and is clean and completely dry before installing the Resista insulation board.
Note: now is the time to make sure the roof deck is in a good condition with no defects that could affect the quality of the installation. If you are unsure, call in an experienced roofing professional, surveyor, architect or building regulations authority representative to inspect the roof and deck for irregularities. It is important for the longevity of the entire project that the roof and any timbers are in good condition.
The boards must be fixed using plates and fasteners or Firestone-approved insulation adhesives. Permaroof stocks a range of suitable fixings for Resista AK insulation boards. View our insulation fixings range here.
Fit the insulation boards neatly, ensuring all roof perimeters, penetrations and abutments are covered. It is advisable to install only the boards that can be covered with membrane before the end of the working day or in advance of predicted bad weather. Leaving boards exposed for prolonged periods increases the risk of damage.
Resista AK boards are clearly marked on one side with the instruction ‘This Side Down’. It is important to adhere to this, particularly when working with a fully adhered membrane application method.
There are three types of installation for single ply membrane systems. Use these minimum guidelines to determine the number of fixings to use for each board.
Mechanically fixed single-ply systems
When the membrane is mechanically fixed, the insulation boards should be fastened with a minimum of 4 approved fasteners and plates per 600mm x 1200mm board. Additional fixings may be needed around the roof perimeter or in locations that experience high wind loads. (Refer to your local wind uplift requirements or contact us to find out more).
Fully adhered single ply systems
When the insulation boards are installed and the membrane is applied using the fully adhered application method, the following minimum requirements are in place.
50mm thickness - min. 4 fasteners per 600mm x 1200mm board.
The final number of fasteners per board should be determined based on the wind uplift calculations and in accordance with your local building regulations.
Ballasted single ply systems
On ballasted single ply systems, the insulation boards may be loose laid unless mechanical attachment is specified within the regulations. Contact the local building regulatory authority for clarification if you are unsure.