Ommend a roof assembly have positive slope to drain and allow for short durations of ponding water.
Ponding water on tpo roof resistance.
Tpo s long term heat uv and natural fungal resistance plus flexibility without need for plasticizers also make tpo a reliable low slope roofing system.
Ponding water might not be an immediate threat but if it is allowed to persist over time that water can begin to wear on the roofing membrane.
For most building owners and property managers protecting the roof system against water penetration has major ramifications for the value of the property.
Providing positive slope many components contribute to a roof system s slope and some elements are outside your responsibility.
If the water does not drain within a 48 hour period it is highly likely that it will stay even longer and there will be a larger amount of water standing.
See figure 1 for the ranges of manufacturers acceptable duration policies for ponding for various roof system types.
Tpo membranes do not exclude ponding water from the warranty and is not affected by such conditions.
Short for thermoplastic polyolefin tpo is a single ply roofing membrane that offers excellent performance at a cost effective price.
If we remove our lab coats and put on our consultant contractor cap and want to determine if a coating has ponding water resistance we would go on the roof walk over to an area where water has ponded press on the coated roof with our thumb and see if the coating is adhered.
Most of the equipment is located on the roof during reroofing with the exception of the dumpster or dump truck required to accommodate the removal of the existing roof which will be required for both roofing systems.
Bur built up hot asphalt roofing excludes ponding breaks down and can support vegetation including moss and fungus.
We provide operational security globally to the world s most powerful brands with an innovative high performance coated fabric membrane that has a unique four layer technology providing puncture chemical and ponding water resistance.
They are often used for roof recovers and attached over old roofs.
My thoughts concerns over the last few decades pvc polyvinyl chloride thermoplastic roofing membranes have become a primary choice for flat and low slope roofs.
Ponding water on a roof.
Heat welded seams provide superior strength.
Ponding or standing water is where the water collects on the roof and has not drained within a couple of days.
When can it damage your investment and how to resolve common causes.
Pvc comes in rolls.
Now let s return to the real world of ponding water resistance.
Pvc is a strong material and naturally a reflective white color.
