Expanded Polystyrene Flat Roof Insulation
EASY TO INSTALL
COMMERCIAL & DOMESTIC
HIGH PERFORMANCE
SUSTAINABLE
What is KORE Inverted Flat Roof?
KORE Inverted Flat Roof is a high performance profiled insulation board (EPS200 & EPS300) that can be used in conjunction with an inverted flat roof system. The product consists of rigid boards cut from moulded blocks of EPS.
KORE Inverted Flat Roof insulation boards are produced using White EPS and are available in a range of thicknesses utilising high density EPS200 and EPS300. Due to the high compressive strength of the board, the KORE Inverted Flat Roof product line offers very low water absorption properties, making it the ideal solution for flat roof applications.
KORE Inverted Flat Roof is suitable for use on inverted flat roofs or zero pitched untrafficked roofs, balconies and terraced roofs subject to pedestrian access only, with a gravel ballast or paved finish on a suitably designed timber, concrete or metal structural deck and appropriate fully supported waterproofing system. KORE Inverted Flat Roof boards are also suitable for use with a green roof finish.
The Benefits of KORE Inverted Flat Roof
There are a number of benefits when choosing KORE Inverted Flat Roof:
- Meets & exceeds building regulations. A U-value of 0.19W/m2K can be achieved with 160mm KORE EPS200 White.
- It’s lightweight, quick and easy to install
- Overlapping insulation boards prevent thermal bridges
- Shiplapped boards prevent cold bridges by reducing air gaps in plane element
- Low water absorption protects against freezing
- Suitable for use on flat roofs with zero pitch and slopes up to 10 degrees
- Suitable for both residential and commercial
- Suitable for green roof construction
Request a Quote
Submit your plans and receive a free, no obligation quotation for KORE Inverted Flat Roof Insulation specific to your project requirements.
KORE Inverted Flat Roof Technical Information
The image to the left is an example of KORE Inverted Flat Roof Insulation in an inverted flat roof application along with KORE Fill Cavity Wall Insulation in the exterior wall. KORE EPS for flat roofs can be used for a wide range of applications, including standard flat roofs, profiled sheet roofing cut to fall roofing and sarking roof insulation. For more information about additional applications please contact our technical team.
 | Physical Properties of KORE EPS Inverted Roof Boards | |
Grade | EPS200 | EPS300 |
Reaction to fire | Class E | Class E |
Thermal conductivity | 0.033 | 0.032 |
Minimum compressive strength at 10% compression (kPa) | CS (10) 200 | CS (10) 300 |
Minimum bending strength | BS250 | BS450 |
Water vapour diffusion factor | 40 to 100 | 40 to 100 |
Long term water absorption by partial immersion | WL(P)i 0.2kg/m² | WL(P)i 0.1kg/m² |
Density | 30 | 40 |
Squareness | 5mm difference between diagonals | 5mm difference between diagonals |
| Dimensions of KORE EPS Inverted Flat Roof Boards | |
Board Type | Type 1 | Type 2 |
Surface Length (mm) | Standard 1200mm (can be cut to other sizes up to 1800mm) | Standard 1200mm |
Surface Width (mm) | Standard 1200mm | Standard 1200mm |
Full Board Size ( L x W) | 1200mm x 1220mm | 1220mm x 1220mm |
Thicknesses (mm) | 100, 150, 200, 250, 300 (other thicknesses available upon request) | 100, 150, 200, 250, 300 (other thicknesses available upon request) |
Lap Joined Edge | 20mm | 20mm |
Board Type 1 – Shiplapped 2 sides
Board Type 2 – Shiplapped 4 sides
Get Started with KORE Inverted Flat Roof
Want to learn more about the KORE Flat Roof Insulation product range? Request a quotation and speak with our technical department today to learn more about his high performance, cost effective solution.
Other KORE Flat Roof Applications
KORE Flat Roof Insulation Boards can be used for a wide variety of flat roof applications. KORE Flat Roof is normally supplied as a component to an approved system, but can be profiled for specific applications where only EPS is required. KORE Flat Roof applications include but are not limited to:
- Standard flat roof applications
- Inverted flat roof applications
- Warm flat roof applications
- Tapered roof applications
- Profiled sheet roofing for new build or retrofit applications
- Cut to fall tapered roof insulation
More information on the above products will be made available in the near future.
