Ponding Water On Tpo Roof

Although you may be held responsible for ponding on new or re covered roof systems many elements that determine how well a roof assembly will drain are outside your responsibility or control.

Ponding water on tpo roof.

If water remains on the roof system after 48 hours consider it an issue that could lead to larger problems requiring costly repairs. The uv stabilizers gone weathering package layer gone the polypropylene ep rubber gone all that was left was the polyester reinforcement. Watch this 37 second video. Ponding occurs when after a storm or heavy rain water collects in pools on the roof.

Because these roofs don t drain water that well they are prone to developing what is known as ponding water. Tpo roofing systems 101. Tpo membranes do not require the ongoing resealing of penetrations walls and curb base flashings associated with bur s. Tpo s long term heat uv and natural fungal resistance plus flexibility without need for plasticizers also make tpo a reliable low slope.

Short for thermoplastic polyolefin tpo is a single ply roofing membrane that offers excellent performance at a cost effective price. Ponding or standing water is where the water collects on the roof and has not drained within a couple of days. This tpo roof actually disintegrated in ponding water. The water was sitting on top of the insulation board and started leaking in the building causing extensive damage.

Onding water sometimes occurs on membrane roof systems as a result of snow rainfall or runoff from equipment. Those pitched roofs have a natural slope where the water can run down draining off the roof. Another problem with leaving pooled water on your roof is the ability of water to act as a magnifying glass. Collect dirt which may cause the growth of vegetation or telegraph mud cracking to the roof below.

Tpo membranes do not exclude ponding water from the warranty and is not affected by such conditions. 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. Ponding water is typically a sign of a drainage problem that needs to be addressed because when left unaddressed ponding water on a roof can. Even flat roofs contain a slight slope to maintain positive drainage.

Heat welded seams provide superior strength. Besides water one of the main damaging forces your roof has to stand up to is ultraviolet rays from the sun. Ponding water is known in the roofing community as water that stands in a puddle on the roof for more than 48 hours at a time. Crushed insulation causing low spots.

Bur built up hot asphalt roofing excludes ponding breaks down and can support vegetation including moss and fungus.