Structural

Collar Tie / Rafter Tie

Structural · definition

Horizontal members resisting rafter spread (rafter tie, low) or uplift (collar tie, high). Removing them to open a ceiling causes the roof to push walls out.

Source: InterNACHI — Collar Ties vs. Rafter Ties

  • Rafter

    A sloped structural member running ridge to wall that supports the roof deck in stick-framed (non-truss) roofs.

  • Control Joint

    A tooled or cut groove that pre-determines where concrete will crack as it shrinks, keeping cracks straight and hidden rather than random.

  • CMU (Concrete Masonry Unit)

    A concrete block used for foundation and structural walls, often grouted and reinforced with rebar at intervals.

  • Crack Monitoring

    Tracking a foundation crack's width over time (e.g., with a tell-tale gauge) to judge whether movement is active or stable before choosin…

  • Carbon Fiber Strap

    High-strength strips bonded to a bowing foundation wall to arrest further inward movement — a less invasive alternative to wall replaceme…

  • Crawl Space Encapsulation

    Sealing a crawl space with a heavy vapor barrier (and often a dehumidifier) to control moisture, mold, and wood rot affecting the structu…

  • Cantilever

    A structural member extending beyond its support, loaded at the free end (e.g., a bumped-out floor or balcony). Backspan and connection a…

  • Curing

    Maintaining moisture and temperature while concrete gains strength. Concrete reaches most of its strength over ~28 days; rushing it weake…

Where this term fits in a remodel

The pillar guides set terms like this one in context — what the work involves, what drives its cost, and where it sits in the sequence of a project. Pricing a specific house takes a defined scope and an on-site assessment.

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