Browse Forums Building Standards; Getting It Right! 1 Sep 23, 2012 3:45 pm We like the look of having a parapet wall around the garage and the front of the home. However, we have been told conflicting stories. 1. Some people have told us that because the roof slopes down into the parapet, a box gutter will be needed and they are notorious for leaking water through the ceiling. 2. Other people have told us that no gutter is used, just flashing to direct the water into the gutters next to the end of the parapet wall. 3. Some people told us that for this look, a butterfly roof is used with a valley capping which directs water to the gutters next to the parapet wall. Can anyone offer any assistance? If box guttering is used and they leak, Im sure builders would stay clear of this style of system? Examples: http://postimage.org/image/pepm2w7m7/ http://postimage.org/image/4no7h6xfr/ http://postimage.org/image/xkzbm98h1/ If a box gutter is required, can it be flashed up the parapet and the roofline enough so that water cannot creap through? Re: Parapet walls and guttering / flashing 2Sep 24, 2012 4:48 pm The only reason a lot of them leak is because the person who draws the plans doesn't allow enough depth in the roof framing to allow an adequate box gutter or the builder or roof plumber doesn't design the gutter to be big enough to cope with big downpours. Get this right from the get go and you should never have any problems at all. Whether you have a flashing or gutter doesn't matter if it's designed right. Stewie Re: Parapet walls and guttering / flashing 3Sep 24, 2012 6:09 pm Agree with Stewie. Box gutters are required to be designed for a 1:100 ARI as opposed to a 1:20 ARI for eaves gutters and yet many do not even cope with a 1:20 ARI. Poor design and inspectors who pass non compliant roof drainage without even knowing the required basics for compliance are the cause of the disproportionate number of box gutters that fail. Another prime cause are the Australian Standards that are written in an unnecessarily complicated manner that causes many plumbers confusion. 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Yes, get a builder, make sure he is experienced and a registered building practitioner 5 8963 Agree, Riviera from Clarendon looks beautiful. I've seen one with a light-colored bricks and just a bit of molding (in my neighborhood). It's definitely overpriced. I'm… 10 6303 The two 15mm holes are obviously not compliant. The Dept of Fair Trading would love to see this one! Do the gutters pool water after it stops raining? Although it's… 4 7847 |