What goes under a TPO roof?

What is the underlayment for TPO roofing?

Two Types of Single-ply Underlayment

This type of roof membrane is commonly used to cover flat roofs. However, you should still consider the two types of single-ply underlayment which are Ethylene Propylene Diene Monomer (EPDM) and Thermoplastic Polyolefin (TPO).

What goes into a TPO roof?

Thermoplastic Polyolefin is a single-ply roofing membrane that is one of the fastest-growing commercial roofing systems on the market. TPO roofing systems are made up of a single layer of synthetics and reinforcing scrim that can be used to cover flat roofs.

Can TPO go directly plywood?

The short answer to this question is yes, TPO can be installed over plywood, but there are limitations on what type of plywood you use.

How do you install TPO roofing membranes?

All About TPO Roofing

Is TPO roof glued down?

A TPO roof can be installed fully-adhered, mechanically-attached or ballasted. When the TPO roof is fully adhered it means that the membrane was glued to the substrate using a special strong adhesive that creates a chemical bond with the TPO.

Can you walk on TPO roof?

Flat Roof Surfaces You Can Walk On

Whether its BUR (Built-up Roofing), TPO (Thermoplastic polyolefin), Modified Bitumen, or Single Ply Roofing, your roofing professional can apply the right waterproofing membrane to make it possible to walk on.

Can TPO be installed over concrete?

Yes… Direct adhesion of TPO single-ply membranes to lightweight insulating concrete for a complete tear-off application is allowed only when the following requirements are met: ● Existing roof is removed down to the LWIC.

What is the minimum slope for a TPO roof?

Thermoplastic single-ply roofing systems are plastic sheets (PVC, TPO, CSPE) that are welded together with hot air. This creates a shingle sheet that provides the weather protection for the building. Both the Thermoset and the Thermoplastic must be installed at a minimum one- fourth-inch-per-twelve-inch slope.

How long does TPO roof last?

It comes in a variety of thickness ranging from 45 mil to 80+ mil which can fit within a wide variety of budgets. 80-mil TPO roofs come with up to a 25-year warranty and with the appropriate maintenance, it is not uncommon for a TPO roofing system to last as long as 30 years.

How thick is a TPO roof?

TPO is a type of roofing membrane that can come in a variety of thicknesses. The most common thickness is probably 60 mils. (A mil is a unit of measure where 1-mil is equal to 0.001 inches. So, a 45-mil roofing membrane is actually 0.045 inches thick; whereas a 60-mil membrane is 0.06 inches thick, and so on.)

What underlayment to use for a flat roof?

Today, GAF underlayment is some of the best in the business. As for PVC, it's a great choice for roof membrane under shingles on flat or low-slope roofs.

Is felt underlayment waterproof?

Asphalt-saturated felt and synthetic underlayment are water-resistant. Rubberized asphalt underlayment is waterproof.

Can you glue TPO to metal?

JM TPO Membrane Adhesive (Solvent-Based) is designed for bonding JM TPO Membrane to metal, wood, concrete and certain roof insulations and should be used to adhere wall flashings or other vertical surfaces.

What is the difference between TPO and EPDM?

TPO roofing reflects sunlight, allowing commercial air conditioners to work more efficiently; whereas EPDM has a dark surface, which in summer conditions will absorb heat, forcing cooling systems to work overtime. TPO offers reduced cooling costs and energy savings for facilities located in warmer climates.

Is TPO better than tar and gravel?

Often times you will find that TPO is actually cheaper with many advantages whereas Tar & Gravel has more disadvantages. When it comes to environmental questions both help with UV light in that it will reflect or absorb the UV light for roof longevity.

Is TPO roof slippery?

TPO is a single-ply material and is not designed to take on heavy foot traffic, which means certain types of footwear may damage the roof. Despite the relative flatness of such roofing, high winds and the risks of slipping (TPO can be slippery when wet) are safety concerns that professionals are prepared for.

Is a TPO roof a cool roof?

TPO, also known as a “Cool Roof”, is a very durable and energy-efficient roofing system. TPO roofing can reduce heating and air conditioning costs by as much as 25 – 35% once installed and completed. TPO can be used in many applications from commercial to residential flat roofs.

What is better TPO or PVC?

While PVC offers better resistance to puncture and weathering, TPO (like PVC) is recyclable and environmentally friendly. Its reflective surface reduces UV radiation and helps with energy efficiency.

How do you install roofing membranes?

Can you weld PVC to TPO?

Heat welding of PVC and TPO works perfectly around these roof units. The technicians will seal the membrane seams, stopping moisture from dripping through around the base.

What is the R value of 60 TPO?

A single-ply roofing system (TPO or EPDM) has a 0.24-0.33 R-value with a typical installed thickness level, therefore you'll need considerable thickness of insulation to get you to an R-30.