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Roof Membrane Types: How to Choose for Any Building

Young Architect

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The five major roof membrane types for low-slope roofs: BUR, modified bitumen, EPDM, TPO, and PVC. In this episode, you will learn what each one is, where it belongs, and how to choose the right one for any building.

We break down the two roofing families (built-up vs. single-ply), the thermoset vs. thermoplastic distinction that explains why some seams are welded and others are glued, and a decision framework based on budget, climate, and building use.

Whether you are studying for the ARE or working on a real project, this episode makes roof membranes simple.

📝 Key topics covered:
Built-up roofing (BUR) vs. single-ply roofing
Modified bitumen roofing: APP and SBS
EPDM roofing (the rubber roof)
TPO roofing: the most common single-ply membrane
PVC roofing and chemical resistance
Thermoplastic vs. thermoset seams (welded vs. glued)
How to choose a roof membrane by budget, climate, and building use
Roof membrane attachment methods: fully adhered, mechanically fastened, ballasted

⏱️ Chapters:
0:00 - What Is a Low-Slope Roof Membrane
1:07 - Free Study Notes
1:48 - Sloped vs Low-Slope Roof
2:40 - Why Shingles Fail
3:16 - Built-Up vs. Single-Ply Roofing
5:30 - Built-Up Roofing (BUR)
8:06 - Modified Bitumen Roofing
10:30 - EPDM Roofing
12:36 - TPO Roofing
14:24 - PVC Roofing
16:39 - How to Choose a Roof Membrane
19:12 - How a Roof Membrane Stays Put
20:19 - Roof Membrane Recap
21:55 - Study with Young Architect

📖 Read the full blog post: https://academy2.youngarchitect.com/r...
📝 Download the FREE Roof Membranes study notes: https://youngarchitect.com/roofing
🎯 Get access to all ARE study materials with the ARE 101 Membership: https://academy2.youngarchitect.com/a...
🎯 Join our 10-week ARE Boot Camp: https://youngarchitect.com/arebootcamp/

📚 Individual courses covered in this episode:
PPD 101: https://academy2.youngarchitect.com/a...
PDD 101: https://academy2.youngarchitect.com/a...
Building Systems 101: https://academy2.youngarchitect.com/a...

👍 If this helped, give it a thumbs up and subscribe for more ARE and CDT exam prep content!

11 Comments

@Youngarchitect Creator 4 months ago (edited) Pinned

Roof membranes sound simple until someone asks you to pick one. Which of the five gave you the most trouble?
Full article and free study notes here: https://academy2.youngarchitect.com/low-slope-roof-membranes/

@Youngarchitect Creator 1 month ago

I’m starving now.

@10ahmedhassan 1 month ago

This video is amazing and well presented! We need videos related to structure and FEMA

@tomoyocombies 8 days ago

Amazing content! Thank you!

@elenarobles6068 1 month ago

Awesome content! Simplified roof membranes to a level I didn't think possible. Thank you!

@saramirza519 1 month ago (edited)

Brilliant explanations about different kinds of roof and their applications. Thank you!

@stanleyoverby4179 1 month ago

This is interesting. My company does a lot of work with restaurants. This video got me thinking so I checked back through some archived drawings and they do use a pvc style roofing membrane called Durolast, but they used to call out TPO. They also use 4" or 5" of rigid insulation. I know insulation is part of another podcast, but i think most of that had to deal with insulation in the walls. I've also seen batt insulation called out in wood roof joist when there is a remodel or an addition to the store. Some of the older stores may have built-up roofing systems, but most of the things that i deal with are single ply roofing systems

@yourstrulysam1460 2 weeks ago

Great video! Btw a rolled up lasagna is called a “rollatini” ! 🍽️🙂

@svpcharls 1 month ago (edited)

Lasagna, mini Lasagna roll-up, eternally patched duct tape, the popular ones, pretty versatile costly... im gonna remember this for the rest of my career! Lmao!

@abdulrahgozar 1 month ago

👍👍👍

@staceyprice6321 1 month ago

This was great information, broken down so easily to digest and learn. I have one question, where would KEE PVC roofing fall in terms of determining if that would be better for the project? Or is it less used or not recommended?