This swamp cooler is a complete disaster. Nothing has been roofed correctly. Relying on tar only. The chimney and vent pipe and swamp cooler are too close together for conventional collars, they run into each other and are cut to fit and smothered with tar. There is water trapped under the roofing with no way out. We will walk through how Rottweiler Roofing handled this situation.
After removing multiple layers of roofing, we uncover rotten plywood. One more layer of shingles to remove from around the swamp cooler.
The rotten plywood is replaced, trusses rebuilt, and all debris cleaned and prepped.
Notice the rusted flashing around the base of the unit. Water was trapped under the shingles with no way out. That is what happens when tar is used. At Rottweiler Roofing we use a waterway around all protrusions through the roof. A waterway is a way for the water to escape without getting trapped under the shingle or roofing material. Along with our No Leak Promise water shield wrap installed around every protrusion is why we are able to guarantee our work to last the lifetime of the roof.
We are going to have to rebuild this rusted flashing the whole right bottom corner is gone. We will be making custom flashing to install over the entire thing. Also notice that there are two different color plywood's, at that spot there is an ad on that was built on top of a previous roof, the shingles showing go under the plywood and the roof changes angles there creating a ponding area that we must install a floater or a strip of aluminum over the angle change, so the roof level always goes downhill. Right now, there is a dip down and back up at the angle change creating a ponding area.
Here we have floated the ponding area, installed water shield on the low slope section and put a strip of water shield over the ponding area so we can run the shingles from the lower roof under that strip at the angle change making it stronger. shingles don't like to bend so when they do, we always put extra protection in that area so if a shingle failed in that area the water would still be forced back on top of the shingles.
Here we have roofed up to the swamp cooler, installed a custom flat collar on the chimney because a conventual one wouldn't fit and installed custom flashing around the base of the swamp cooler. A row of shingles goes under the water shield at the angle change essentially separating the roof into two separate roofs without being able to see a separation.
Notice the waterway around the chimney flat collar. A way for the water to go around instead of possibly getting stuck or forced under the shingle. We left a four-inch waterway around the swamp cooler. the flashing was wide enough to, and we did not want to put any nails near the edge of the swamp cooler. There are plates under the feet so no matter what the roofing screw will bite into something. That area usually has many old nail and screw holes, and the final screw can spin or strip out, so the plate makes sure that the screw hits something solid to hold it tight. There is a waterway around the vent and vent pipe in the picture also, you just can't see them properly due to shadows.
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