IRC 2021 · Model
Chapter 21: Hydronic Piping
14 sections in this chapter of the IRC 2021 model text — not Model's amended edition.
2103.2.1 Thermal break required A thermal break consisting of asphalt expansion joint materials or similar insulating materials shall be provided at a point where a heated slab meets a foundation wall or other conductive slab.
- 2103.2.1Thermal break required
- 2104.1Piping materials
- 2104.2Piping joints
- G2416.1(405.1) General
- M2101.1General
- M2101.2System drain down
- M2101.3Protection of potable water
- M2101.4Pipe penetrations
- M2101.5Contact with building material
- M2101.6Drilling and notching
- M2102.1General
- M2103.1Piping materials
- M2103.2Thermal barrier required
- M2103.3Piping joints
The full text is for BuildSpec members
Read the complete section, search across every adopted code, run the calculators and ask Copilot — free for 14 days, no card required.
- Full text of every section in this chapter
- Plain-English summaries and cross-references
- Compare this chapter across jurisdictions
- Ask Code AI about any section, with citations
No card required. After the 14-day trial, plans start at $29/mo.
Our previews are real data — live counts, no placeholders. We publish our error log →