Your building could have settled.
Flat roof depression.
Plies are the layers of felts fabrics and mats that make up roofs.
However excessive ponding threatens your roof.
The cause of the depression matters less than your plan to repair it.
Remove the plies of the flat roof by thrusting into them with a spade.
A depression in your low slope roof will thanks to gravity collect water after any precipitation.
The roof deck s structural members could be weakened rusted if metal or broken if wood.
Again these are repairs to stop roof leaks that may originate in the depressed area but not intended to remove the depression.
My flat roof has a low place that accumulates standing water after a rain.
The appearance of puddles on the roof could also be caused by drainage problems so make sure outlets are cleared and drainage systems are functional.
So if your flat roof is collecting water that doesn t drain or evaporate within 48 hours you will need to fix it.
In the photo below the impact depression is accompanied by a small hole.
The insulation could be compressed.
Roof impact when a heavy object such as a tree branch drops on the roof it will cause a depression in the area and likely some structural damage to sheathing and roof trusses or rafters underneath.
Always stand on a firm section of the roof and wear long pants long sleeves and safety glasses.
The sub roof is sturdy with no soft places the depression is only about 1 1 1 2 inches below grade in an area of about 8x10 feet.
Flat roofs by their very nature will collect some water when it rains.
A dugout or dug out also known as a pit house or earth lodge is a shelter for humans or domesticated animals and livestock based on a hole or depression dug into the ground.
By their very nature flat roofs do not completely drain after it rains.
The roof is built up with a cap of roll roofing about 10 years old in fairly good.
How to fix ponding on a flat roof depends on the cause of the ponding.
However puddles 1 or more inches deep that linger for days can indicate a.
It may also void your warranty.
Dugouts can be fully recessed into the earth with a flat roof covered by ground or dug into a hillside.
How to fix water puddling on a flat roof.
Orient the spade at a 30 to 40 degree angle to the roof and start thrusting a spot in the middle of the roof.
They can also be semi recessed with a constructed wood or sod roof standing out.
Never use tile to fill low spots in flat roofs.
