Installation
E-therm comes in different widths and thicknesses to meet your building needs. E-therm also incorporates a 150mm foil flap on the longitudinal side of the product that can eliminate taping or overlapping in most installations. This saves time and money during installation and ensures a  vapour barrier that doesn't rely on tape for it to work.

1. Starting at the back of the gutter, roll E-therm insulation across the roof rafters/purlins or batterns ensuring that the Anti-Glare face is facing towards you during installation.
2. If you are installing directly over purlins or batterns ensure that you can achieve the desired sag between the purlins or batterns as this affects the thermal performance of the system.
3. When adjoining the next roll, make sure that the 150mm foil flap overlaps the first roll. This should ensure that the product is creating a vapour barrier.
4. "Note. only if installing over rafters" Secure to rafters if needed for ease of installation, then fix the batterns making sure all rolls are tightly butted & where necessary tape to be used. Make sure that when fixing batterns that they afix as per roof cover requirements & to applicable standards.
5. All end joins should be taped with Thermotec's recommended E-therm 75mm reinforced aluminum tape or alternatively overlapped by rafter spacing.
6. Where necessary cut E-therm around any penetrations making sure a tight fit to minimise openings.