Cardinal Roofing and Gutters
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TPO Roof Install
TPO Roofing material was developed early in the 1990’s as a more budget friendly yet reliable method to replace the more expensive PVC roofing material.
TPO is a thermoplastic or synthetic substance that softens upon heating and hardens as it cools
which allows the strips of membranes laid out to cover a flat roof to be seamed together with a hot welding tool. TPO once available only in white, grey and black reflective color options is now available in a great array of colors that are also UV resistant meaning “cool” properties- very popular with homeowners.
Choice of 2 types of installations methods:
Attached with fasteners or glued directly to the roof and. Seams between TPO strips are heat welded, as well as, around roof perforations, such as chimneys, vents, cables and pipes. When the membrane is attached with fasteners, wind uplift or billowing might be a problem. A fully adhered membrane (glued directly to the roof's substrate) does not have a billowing problem but this is the more expensive method of attachment.
TPO Roofing is very light weight making it easier and faster to install than rubber membranes.
TPO roofing’s fast install (less work and time spent) means reduced installation costs over more complex roofing systems.
A higher quality reinforced TPO membrane will flex with a building’s heat expansion and contraction as it cools.
The UV resistant “cool” properties will reduce cooling costs on hot summer days making them attractive in residential or commercial areas of high electric supply costs.
TPO Fully Adhered
Hot Welding TPO
TPO Rooftop Terrace
TPO Roofing Repair:
Fixing problems on a TPO flat roof can be troublesome because there is a common misconception that the existing membrane surface does not have to be scrupulously cleaned to accept the repair patch. Many novice repairs fail to bond because the prep work hasn’t been done. Best way to check bonding of a TPO patch is to check the sealed edge of the patch by trying to slip something thin under it. Water will leak under a badly sealed patch and onto the roof mostly unseen till the damage shows up in the building below or as decay on the rooftop. To seal the bond correctly between a TPO patch and the roof membrane, specialized equipment is needed. Repairs must be made with a TPO material patch and a hot air welder- most property owners just don’t have those items. Plus, if they tried to get a small patch of TPO material from a roofing manufacturer, they’ll probably be required to buy a lot more than a small piece. In conclusion, using the wrong material, on a TPO roof will only increase the area of damage that needs to be repair.
The TPO roof needs to be checked regularly for debris,
worn areas along seams, and ponding of water- mostly after storms or a service repair to a component on top of the roof. TPO single ply membrane does resists mold growth, accumulated grime, tears and punctures but is not infallible. Sharp objects, such as tree branches could have been blown on the roof during a storm or a service provider could have dropped pointed or sharp tools on the roof during a repair causing tears or punctures that need repair. Critters, such as squirrels and mice could have chewed openings into the roof membrane. These openings will also allow moisture infiltration causing roof decay and perhaps a mold infestation. Regular inspections will encourage minor repairs before they become major.
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