Ponding is the typically unwanted pooling of water typically on a flat roof or roadway.
Ponding vs bird baths on a roof.
The best solar birdbath fountains for 2020.
Although many birds can be seen splashing around in a bird bath or a puddle the most important aspect of a bird bath is it provides the birds with a ready and safe source of clean drinking water.
Ponding water accelerates the deterioration of many materials including seam adhesives in single ply roof systems steel equipment supports and particularly roofing asphalt.
Those unsightly bird baths or small areas where water and dirt collect can be filled with roof slope as well leaving your roof to stay as white as the day is was applied.
If you re fixing a dead level roof with ponding issues you may want to consider installing crickets wedge shaped diversion ridges or tapered insulation to redirect water flow.
Roofing and the nrca s definition is the excessive accumulation of water at low lying areas on a roof that remains more than 48 hours after precipitation under conditions conducive to drying.
In fact asphalt roofing is one of the worst roofing solutions against ponding water because of panel design.
Low f numbers have more frequent more exaggerated waves which result in deep birdbaths.
The roof is designed to slide up the ropes probably to allow easy cleaning and provide proper ventilation surrounding the perimeter.
Some also use ants to pick off mites and dander.
The designer will have spot flowline elevations plainly showing you will have a bird bath on one of the curb returns frequently in a wheel chair ramp.
This is particularly true at street intersections where both streets are on a grade and you have curb and gutter.
September 2 2020.
Ponding should not be confused with bird baths which are random and inconsequential amounts of water that remain on a roof after a rainfall.
Most birds groom themselves using a oil secreted from a gland by their tail running the oil through every feather.
Interestingly it also comes with a very strong smell of cedar.
With the installation of roof slope ponding water can be eliminated from the equation in one quick and easy step.
Spf spray polyurethane foam roof with ponding water bird baths if your commercial roof has a slope of per foot a 1 12 slope or more has interior drains or an edge mounted gutter does not use scuppers for primary drainage and has no ponding water water that is still present after 48 hr since the last precipitation you have the.
I have often found bird baths on the plans before costruction.
Ponding occurs when after a storm or heavy rain water collects in pools on the roof.
Table 1 shows the maximum gap that can be expected under a 10 foot straight edge for various floor classifications from conventional to superflat.
Now is the time to plan for solving ponding problems.
Where to place a birdbath.
In fact the number is related to the frequency and depth of the waves shown in figure 1.
