

Accreditations & Links
Our Stylite Inverted Roof is fully certificated by BDA Kiwa
We have real pride in the products we supply that is why we go above and beyond to ensure that we surpass all current regulations.
We have real pride in the products we supply that is why we go above and beyond to ensure that we surpass all current regulations.




Expanded Polystyrene Product Grades








Product Overview
- Fully Certified by Kiwa BDA
- Corrected Thermal Conductivity of 0.033 W/mK
- cost effective alternative to other insulations
- Lightweight, Quick & easy to install
- Can be used in commercial or residential
- For use with all types of flat roofing
- Available with a shipplap profile to stop wind uplift
SPI's Stylite Inverted flat roofing insulation boards provides excellent thermal insulation for your flat roof. With an overlapping edge profile which helps with cold bridging and with the potential wind uplift while installing, these specially designed roofing boards are perfect for your flat roof. Stylite Inverted roofing boards are ideal for use with ballasted roofing finishes, from pebble topped roofing to green intensive roofing and when utilised with waterproofing layers such as felt, mastic asphalt or single layer membranes means that Stylite Inverted roofing boards can be utilised for any roofing application from refurbished domestic to commercial projects. For any more details on our Stylite Inverted roofing boards download the datasheet below or contact our sales team on 01274 691 777