Your Insulation Choice
There are many aspects that need consideration when selecting the insulation type to use within a flat roof assembly. No one generic insulation type satisfies all performance criteria, some of which noted below:
- Maximum thermal performance/minimum thickness
- Enhanced Fall
- Compressive strength
- Combustibility status
- Cost
- Membrane compatibility
- Use of roof
- Acoustics
- Weight added to the structure
To assist you in your choice of insulant, see below a table highlighting the key characteristics of each insulation type.
The table also includes a comparative indication of product costs, 1 being the most cost effective and 6 being the costliest.
Not all insulants are suitable in all applications.
PIR
FOIL FACED
TISSUE FACED
TORCH RECEIVABLE
EPS
Stonewool
CELLULAR GLASS
VIPs
| Thermal Performance | Accoustics | Compressive Strength | Flexibility of Fall | Low Bonding Area | Non-Combustible | Cost Comparison | |
|---|---|---|---|---|---|---|---|
| PIR |  |
3 | |||||
|
Stonewool
|
|
|
|
4 | |||
| Cellular Glass | |
|
5 | ||||
| EPS | |
|
|
1 | |||
| VIP | |
6 | |||||
| Hybrid* | |
|
|
|
|
2 |
COST COMPARISON: 1 = MOST COST EFFECTIVE
*PIR/EPS or PIR/Stonewool Combination
Oatking Resource Hub
Our resource hub contains useful product data and technical information for a wide range of insulation types, along with industry standards and guidance from roofing affiliates.