Inverted Green Roof

Bre investigated a large building with an inverted roof that was suffering from persistent leaks with water dripping from the underside of the roof and on to suspended ceiling tiles.

Inverted green roof.

The system solution shown relates to the green roof build up in particular. Green roofs can also classed as ballasted roofs because the waterproofing system is protected by sedum or other vegetation which can be aesthetically pleasing. Inverted roof designing buildings wiki share your construction industry knowledge. Find out more about inverted roof products.

The thermal insulation layer follows on top. When the insulation was removed from the worst affected area a large number of water filled blisters were found in the waterproof membrane figure 1. An inverted roof also referred to as a protected membrane or upside down roof is form of flat roof in which the waterproofing layer is beneath the thermal insulation rather than above it. In contrast to conventional flat roof build ups the inverted roof is characterised by a reverse arrangement of layers.

The waterproofing is applied directly onto the load bearing roof structure. The main way that an inverted roof differs to a ballasted is that the insulation sits on top of the waterproofing but in both scenarios the waterproofing is essentially never exposed. As a result the waterproofing is perfectly protected against mechanical damage. Compatible with green roof systems resistant to the passage of water vapour easy to handle and install ideal for new build and refurbishment non deleterious material manufactured with a blowing agent that has zero odp and low gwp kingspan greenguard inverted roofs insulation for protected membrane flat roofs and green roofs insulation.

Create a recreational park or plaza on your building s inverted roof including driveways and parking areas. The green guide informs breeam ratings and here the biggest additional contribution will be the iso 14001 certification for the manufacture of the waterproofing and the insulation. Green roof solar. High performance roof insulation suitable for use in a range of inverted roofs including green roofs and protected membrane flat roofs.

Most of the inverted roof insulation boards have an a or a rating but as an inverted roof is usually on a concrete deck the overall rating will be c or d. The example above shows an extensive green roof build up with floradrain fd 25 e allowing for diffusion however most of the zinco drainage elements are vapour permeable so many other varieties of zinco build ups can be realised on inverted roofs.