Passive House Flat Roof Details

The roof maker passive house flat rooflight passive house drives both innovation and design with a focus on energy efficiency and a carbon neutral offering.

Passive house flat roof details.

Passive house buildings have been described as the most comfortable due to them offering excellent thermal performance and exceptional airtightness. Passive houses aren t just residential either with large scale commercial buildings like offices hospitals and schools conforming to the standard and leading the way for a. Fink truss attic truss the vaulted roof and the flat roof. Intelligent design of the twin wall and foundation junction provides a break free continuous barrier that essentially envelops the structure in a thick layer of insulation.

Passive wall mbc timber frame. They offer energy efficiency ratings in band a. The individual roof type diagrams show the detail associated with each roof type. To gain a deeper understanding of the passivhaus standard it is crucial to examine the difference between traditional irish roof systems and passive roofs.

The irish standard part l 2011 for a traditional roof structure is 0 16 w m 2 k. This is very close to the passivhaus standard 0 10 0 15 w m 2 k however it still does satisfy it. The main diagram below shows how the three passive elements roof wall and foundation link together. Passive houses when sold can command a premium on the open market due to their low running costs with some house builders boasting annual heating bills as low as 60.

Speaking to passive house plus the company s hugh whiriskey emphasised that with more and more designers now specifying vapour control membranes in flat roof constructions it is crucial each roof structure is correctly designed to prevent any moisture issues from arising. Alwitra flat roof details. Green roofs not only look beautiful they prevent flooding and protect the environment. For a start there are no tricky gable end spaces to try and navigate when opening up the upper levels in flat roof houses plus you can use the roof itself as an outdoor terrace which will be a huge benefit for anyone with restrictive garden.

Minimum flat roof pitch 2 1 4 12 and 3 3 8 12 when considering potential deflection. Again like before i have taken the two most common. Shedding water is always the essential first step in preventing leaks and keeping your roof safe. The new york architect chris benedict leads in the right direction by going further using 1 2 12 flat roofs.

Don t go thinking that modern houses with flat roofs only look good though as these innovative designs actually have practical properties as well. The mbc passive wall system delivers a u value of 0 12w m2k and is designed to perform to its optimum level when used in tandem with our passive foundation system.