Posts Tagged ‘TPO roofing systems’

Commercial TPO Roofing — Single Ply Roofing Systems

December 9, 2010

Commercial TPO Roofing — Single Ply Roof System

JM TPO is one of the latest single ply, flat roofing materials on the market.  The current membrane formulations are reinforced with a polyester fabric and manufactured using an ultraviolet-resistant thermoplastic polyolefin formulation.  TPO from JM comes in several thicknesses.  It is designed for use in mechanically fastened and adhered roofing applications in new, re-roof and re-cover roof constructions.  It is fire and chemical resistant and contains UV inhibitors for added longevity.

The Johns Manville TPO roofing systems combine both polypropylene (plastic) and ethylene-propylene (rubber) using state-of-the-art polymer manufacturing technology.  This results in an ideal commercial roofing system that is reliable, cost effective, environmentally friendly and easy to install.  The TPO systems can be installed fully adhered or mechanically fastened.

United Roofing & Remodeling is proud to carry and install the Johns Manville TPO system. We carry two types of TPO roofing products, TPO and TPO-1.  Both come in several thicknesses, please call us for a free consultation and needs assessment.

Call a reliable Minnesota roofing contractor today Or Request a Quote online


High Performance TPO Rubber Roofing Systems

December 7, 2010

The TPO Rubber Roofing Systems can incorporate 45-mil, 60-mil, 72-mil or 80-mil (TPO) Thermoplastic Polyolefin membranes.
Because top ply is the most vital membrane component for long-term weathering characteristics.  This results in an ideal commercial roofing system that is reliable, cost effective, environmentally friendly and easy to install.

  • Fully Adhered Systems begin with insulation mechanically attached to the roof deck.  The membrane and substrate are then coated with a bonding adhesive.  The membrane is rolled into place and seams are then hot air welded.
  • Mechanically Attached Systems start with insulation fastened to the substrate.  The membrane is then fastened through the insulation with fasteners and plates.  Adjoining membrane sheets are overlapped and joined together by hot air welding.

One of the greatest benefits of the TPO roof systems is energy savings.  Many manufacturers have ENERGY STAR Compliant TPO Membranes with high reflectivity ratings that help reduce the amount of energy required to maintain cool building environments.  Less energy consumed results in less pollutants generated back into the atmosphere (lessening the Urban Heat Island Effect) and directly contributes to a cleaner, cooler environment.

Contact a Minnesota commercial roofing contractor today!

Flat Roof Systems

October 12, 2010

Types Of Flat Roof Systems

Flat roof systems are roofs that are built so that they are nearly flat.  They are not completely flat; otherwise water would build up on the roof (called ponding) and would eventually start to get inside the building.  Flat roofs are built with a slight incline.  They are required to have at least a one-eighth-inch difference in height over each foot of the roof.   There are five main types of flat roof systems.

Roll Asphalt
A roll asphalt roof is made of material that is rolled onto the roof over roof felt and nailed down or applied with cold asphalt cement.  It is usually covered with a granular mineral surface, which looks like gravel.  The base material can be organic felt or fiberglass felt that is saturated in asphalt.  This is the cheapest building material, but it usually doesn’t last much beyond 10 years.

Single-ply flat roofs are composed of a single layer of a plastic or rubber-like compound.  Some of the more popular materials used today are thermoplastic polyolefin (TPO) and polyvinyl chloride (PVC), which are both very good at reflecting heat, which saves on cooling costs in the building.  Ethylene propylene diene monomer (EPDM) is also popular because it also cools well when white EPDM is used, and it is easy to install.  Rubberized asphalt is also used.  Single-ply roof systems, depending on the materials, can be self-adhered, applied with hot asphalt or installed by heating the back of the material with a torch.  Warranties for single-ply roofs usually are for 10 to 12 years.

Multiple-ply roof systems are also known as built-up roofs (BUR). These are made by overlapping rolls of felt or mats that are alternated with layers of asphalt.  This is covered by a granular mineral surface, ballast or tile to protect the layers.  These roofs can last 10 to 30 years.

Modified Bitumen
A modified bitumen roof is a multiple-ply roof that is made with modified bituminous membranes, which are made out of a blend of asphalt and a polymer.  This allows the asphalt to take on characteristics of the polymer, which is similar to materials used in single-ply roofs.  The modified bitumen roof is covered in a mineral or gravel surface, or a liquid coating that provides reflectivity.

Flat-seamed Metal
Flat-seamed metal roofs are made out of small sheets of metal that are soldered together.  The sheets are usually designed to look like tile or shingles.  The most common metals used for roofs today are copper, lead-coated copper or stainless steel. Metal roofs are light and reflect heat well, but are more expensive.

TPO Single Ply Membranes – An Economical Choice

July 29, 2010

Thermoplastic Polyolefin, or TPO, is part of a diverse family of rubber-like materials based on polypropylene and EP rubber polymerized together using a state-of-the-art manufacturing technology.  Unlike other popular thermoplastic roofing membranes (PVC), TPO does not contain chlorine or plasticizers.  Without chlorine being added, it can be classified as an environmentally safe “green” product.  It is also 100% recyclable.  In addition, the lack of plasticizers enables sheets to wear longer and not harden or become brittle over time.  Flame retardants, light stabilizers, antioxidants, light absorbers and pigments are blended to create a sheet that is “Title 24” compliant.  The white TPO roofing membrane typically has a reflectivity rating in the high 80% range when installed, and after 3 years still maintains a rating in the low 80% range.

In commercial roofing applications, the TPO membrane is installed using mechanical fasteners and plates placed along the leading edge with the next sheet lapped and then hot air-welded together. Hot air robots make larger jobs very quick with welds that are consistent.  One of the major benefits of TPO is that the welded seams actually become stronger than the sheets themselves, making for an ultra-strong roof.  TPO is suitable either as an overlay or for use in a complete tear-off.  Sheet thicknesses range from 45 mils to 80 mils, with the 60-mil sheet the most popular.  Because TPO roofing material is manufactured in wide sheets, labor requirements are reduced, especially on larger roof installations, which can result in significant cost savings, making TPO an economical choice.

Completely odorless, TPO is good choice for situations where fumes would be a problem and roofs that have limited access.  Manufacturer material and labor warranties for TPO roofing range from 10 to 20 years.

Benefits Of TPO Single – Ply Roof Systems

June 3, 2010

Thermoplastic Polyolefin Roofing Membranes (TPO)

A typical low-slope roofing system consists of three components: a structural deck, a thermal insulation barrier and a waterproofing membrane, which consists of reinforcing fibers or fabric sandwiched between two sheets of flexible matrix.  The matrix material is either asphalt- or polymer-based.  In “single-ply” membranes, the matrix is made of flexible polymer.  The reinforcement provides dimensional stability for the membrane as well as strength to resist stresses in service.  It is generally made of chopped short glass fiber strands packed in a mat, or continuous polyester fiber arranged in a grid or in a non-woven mat.

Benefits of TPOs
The following benefits and characteristics of TPO are:

  • environmentally friendly and recyclable
  • seams can be heat welded
  • available in many colors
  • resistant to heat and UV degradation
  • resistant to may chemicals
  • good cold-temperature flexibility
  • no external plasticizers added

The result is an ideal commercial roofing system that is reliable and cost effective.  The TPO system is one of the latest single-ply, flat roofing technologies on the market today.  The TPO systems can be installed fully adhered or mechanically fastened.