Inverted Flat Roof System

In an inverted roof construction the sika trocal membrane is installed directly to the structural decking usually concrete and the innobond thermal insulation is installed on top of the membrane.

Inverted flat roof system.

Rigid extruded polystyrene insulation has minimal water absorption due to its closed cell structure. This makes it the only material suitable and approved for inverted roof applications. The mariseal system inverted flat roof waterproofing method offers a simple build up waterproofing that features a protected waterproofing membrane and loose laying insulation boards. Inverted roof systems a variation of a warm roof.

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. What is an inverted roof. Then aquazone a high performance non woven polyethylene membrane is installed over the insulation to minimise the cooling effect associated with rainwater flowing down through the insulation and draining away. Simply defined as a type of roof construction where the waterproofing layer lies beneath the insulation instead of above it as in other forms of roofing inverted roofs ensure that the complete roof construction including roof covering is kept at warm temperatures during winter months and at moderate temperates during the summer months.

Inverted roofs are designed with the waterproofing layer usually a liquid applied membrane beneath the insulation. Invented by dow in the late 1960 s an inverted roof system uses dupont styrofoam brand xps insulation to protect the membrane helping improve the performance and longevity of the entire roof system. Inverted flat roof waterproofing combined with a thermal insulation is essential for a buildings waterproofing and energy saving thermal insulation. The main difference between inverted roof systems and other roof systems is in the position of the waterproofing membrane.