In comparison with built-up roofing single-ply roofing is?

Last Update: April 20, 2022

This is a question our experts keep getting from time to time. Now, we have got the complete detailed explanation and answer for everyone, who is interested!

Asked by: Thelma Renner
Score: 4.5/5 (20 votes)

Built-up systems are installed by alternating layers of asphalt or tar and supporting fabrics directly onto the roof. You can choose the number of layers (or plies) that are installed. ... Single-Ply Membrane Roofing Systems have been the go-to roofing for commercial, industrial, and manufacturing facilities for decades.

What is a single ply membrane roof?

Single-ply is wide width sheeting meant for low slope roofs.

Single-ply roofs have far fewer seams than asphaltic rolled roof systems and don't require dangerous torches or hot asphalt for installation. They also come with prefabricated detailing accessories that make installation easy.

What is the built-up roof?

ARMA defines a built-up roofing system as a roof where multiple layers of asphalt alternated with ply sheets (felts) are applied over the roof deck (vapor retarder) and, most often over insulation that is attached to the roof decking.

What is the difference between built-up roofing and modified bitumen?

Modified Bitumen (MB) roofing is an asphalt-based, close cousin of the Built-up-Roof (BUR) designed for buildings with low-slope or “flat” roof structures. ... Modified Bitumen roofs give designers and installers an even broader array of options than BUR.

What is 3 ply built-up roof?

A 3-Ply Hybrid BUR differs from other membrane options due to its combination of a 1ply base sheet with two plies of glass felt that enhances the performance of the membrane with a quicker installation time and less weight on the roofing system itself.

A Review of Single-Ply Membrane Commercial Roofing (Pros & Cons)

24 related questions found

What is better TPO or PVC?

While TPO has superior weathering and slightly better tear and break resistance than PVC, PVC does have some characteristics that certain customers need or prefer. ... Also, PVC is slightly more flexible than TPO, which some contractors like. There used to be talk about welding differences, but both membranes weld well.

What is a 4 ply roof?

A 4-Ply roofing system involves roofing felts that are typically four plies composed of layers of reinforcement such as fiberglass or polyester felts, with each ply being embedded in a full bed of hot asphalt/bitumen.

How do you maintain a modified bitumen roof?

If moisture is present, open the membrane and inspect the insulation and deck for damage. Remove the wet or damaged insulation and repair or replace the deck as required. Properly attach new, dry insulation consistent with the thickness of the existing insulation and compatible with the other roof system components.

How long does a bitumen roof last?

What Makes Bitumen Roofing Special? Modified bitumen roofing is a long-lasting material with an average life span of 20 years. But since it's a low-maintenance roofing system, it can last even longer with just basic care and maintenance.

Can a built up roof be repaired?

Although built-up roofs are durable, leaks can develop. ... If simple repairs do not remedy leaks, the roof surface may need to be replaced. This is a job for professionals; rolling out layers of roofing felt and hot mopping asphalt is more than most homeowners will want to take on.

Why do they put rocks on roofs?

The ballast is used to keep the roofing system cool and of out of the sun's harmful rays, thus keeping energy costs down. The gravel top coat is also extremely resilient to heavy foot traffic and high-wind scenarios.

How long do single-ply roofs last?

If properly installed and maintained, a commercial single-ply membrane roof can last 30 years.

What is the best single ply roofing system?

Market leading manufacturer of single ply roofing Sika Sarnafil are certainly a brand to consider. Their waterproof membranes are suitable for nearly all types of roof design in new build and refurbishment applications.
...
Sika Sarnafil
  • Sarnafil G410.
  • Sarnafil TS.
  • Sarnafil S327.

How much is a single ply roof?

The average single-ply roofing system can be installed for $3.50 – $7 per square foot. The average spray foam roofing system can be installed for $4 – $7 per square foot.

Is single ply roofing good?

In the last 30 years, single-ply roofing has displaced older materials, such as tar paper, as the go-to roofing material for commercial roofing contractors. Properly installed, single-ply roofing systems offer an inherent advantage over traditional materials due to their strength, flexibility, and high durability.

Which flat roof system is best?

EPDM Membranes

Quite possibly the best flat roofing membrane, EPDM is a relatively low-cost flat roof material that offers a number of significant advantages. Clean, straightforward installation, incredible strength, a long lifespan, and a smart finish combine to make EPDM membranes a difficult one to beat.

Can you walk on Ondura roofing?

When walking on Ondura, wear soft-soled shoes and place your feet perpendicular to the corrugations. All roofing is slippery when wet, dusty, frosty or oily... avoid working or walking on the roof if any of these conditions exist. Working on the roof if windy conditions exist can be dangerous and should be avoided.

Can modified bitumen roofing be repaired?

Luckily, when modified bitumen coating is damaged, repair is possible! There are a few different ways it can be handled, although applying a patch is the most common method.

Can you paint modified bitumen roof?

The Silicone Roof Coating Restoration System Major Painting installed to the existing modified bitumen roof system, fully restored the existing modified bitumen roof system while adding additional benefits such as energy efficiency due to the reflectivity of the coating, warrants against ponding water, environmentally ...

What is modified bitumen roofing?

Modified Bitumen (MB) roofing is an asphalt-based, close cousin of the Built-up-Roof (BUR) designed for buildings with low-slope or "flat" roof structures. ... With five layers of protection, it's one of the most trusted flat roofing systems used in the industry today.

What is a 2 ply roof?

A torch on roof, or a 2-ply SBS roof system, is one of the most popular roofing systems. Consisting of polyester or fiberglass reinforcing mat sandwiched between two layers of rubberized asphalt, two ply roof system are durable and relatively quick to install.

What is single ply membrane made of?

Single Ply is a complete roof system. It is created from strong and flexible membranes composed predominantly of synthetic polymer. The thickness of single ply membrane is in the range 1.1mm to +2mm. Some products are homogenous, others are reinforced with glass fibre or polyester, depending on the application.

How long should an EPDM roof last?

EPDM roof membranes remain stable over time and can have a life expectancy of over 50 years. ** Made from synthetic rubber, EPDM roofing membranes have two primary ingredients, ethylene and propylene, which are derived from oil and natural gas.