Inverted Roof Flap

This procedure is not indicated in eyes with previous internal limiting membrane removal around the macular hole.

Inverted roof flap. 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. The inverted roof requires thermal insulation in which abilities for thermal insulation are preserved even under the influence of humidity. All three types of flat roofing cost 250 to 350 per square 100 square feet but prices vary according to region and size of the roof. Compact thermal insulation from foamed extruded polystyrene xps is used in inverted roof systems.

With a closed cell structure such systems provide flawless thermal protection even in humid conditions. Inverted roofing is typically installed on a concrete deck because a loading of 80kg m2 is required to retain the insulation on the roof. Flat roofs usually come with a 10 to 20 year warranty but can last 25 years if you build the roofs right and maintain them using commonsense rules. The inverted ilm flap technique prevents the postoperative flat open appearance of a macular hole and improves both the functional and anatomic outcomes of vitrectomy for macular holes with a diameter greater than 400 μm.

Pros and cons for flat roof materials. Glue laminated timber is also sometimes used.