Division 07: Thermal and Moisture Protection
This division outlines how a building is sealed from water and temperature changes. Study roofing membranes, insulation types, vapor barriers, fireproofing, and waterproofing systems to improve your estimating accuracy and project understanding.
🎥 Study Video
Replace the YouTube link above with your Division 07 study video.
📄 Cheat Sheet
Download our Division 07 cheat sheet with insulation values, roofing layers, and common moisture protection methods.
Download Cheat Sheet(Replace this link with your actual PDF.)
💡 Instructor Insights
- Look for spec sections like 07 21 00 (Thermal Insulation) and 07 50 00 (Membrane Roofing).
- Check R-values and material thickness for insulation types — they vary by code and region.
- Roofing systems include underlayment, membrane, flashing, and fasteners — make sure nothing’s left out of your takeoff.
- Waterproofing is often specified in basements and planter boxes — missed items here lead to costly change orders.
- Vapor barriers and air barriers are critical in energy-efficient construction — look for placement and detailing.
📥 Quiz & Resources
Test your understanding of Division 07 – Thermal & Moisture Protection. Review the answers to confirm your knowledge.
- What does Division 07 focus on?
Answer: Building envelope protection — insulation, roofing, waterproofing, air/vapor barriers, and sealants. - What insulation details should be verified?
Answer: R-values, type (rigid, batt, spray foam), location, and fire ratings. - What’s typically included in a roofing spec?
Answer: Membrane type (EPDM, TPO), slope, fastening, flashing, drainage, and warranties. - Where is waterproofing commonly required?
Answer: Below-grade walls, elevator pits, planters, and under slabs. - What’s the difference between air and vapor barriers?
Answer: Air barriers stop air leakage; vapor barriers control moisture diffusion — both are essential for energy and moisture control.
Division 07: Thermal & Moisture Protection
🔹 Key Teaching Points
1️⃣ Know the Specification Sections
- 07 21 00 – Thermal Insulation
- 07 50 00 – Membrane Roofing
- Other common sections include air barriers, waterproofing, flashing, and sealants.
2️⃣ R-Values and Thickness Matter
- Specs dictate minimum R-values based on climate zone and energy codes.
- Insulation type (rigid board, batt, spray foam) and installation location are critical.
3️⃣ Roofing Systems Are Layered
- Include underlayment, membrane (EPDM, TPO, BUR), flashing, edge metal, and fasteners.
- Roof warranties may require approved installers or manufacturers.
4️⃣ Don’t Miss Waterproofing
- Specs may include basement walls, elevator pits, and planter boxes.
- Missed waterproofing = major cost impact and change orders.
5️⃣ Vapor and Air Barriers Are Essential
- Look for detailing around penetrations, sheathing joints, and mechanical chases.
- Air barriers often overlap with building wrap or sheathing systems.
✅ Wrap-Up Summary
- Division 07 defines your building envelope’s performance.
- Specs include material performance, installation detailing, and energy requirements.
- Small misses here cause big moisture problems later — read it twice!