---
id: what-are-floor-joists-and-why-do-they-matter
title: "What are floor joists and why do they matter?"
category: guide
subtopic: floor-joist-basics
page_type: guide
source_url: "https://www.prioritypest.com/floor-joist-repair"
tags: ["structural repair", "home inspection", "moisture damage"]
questions:
  - "What are floor joists?"
  - "Why are floor joists important?"
  - "What causes floor joist problems?"
related: [joist-damage-signs, joist-repair-process]
dealer: Priority Pest Services
---

Floor joists are the supporting beams that hold up your home's structure. When they weaken, your entire house is at risk.

Rotten floor joists are usually caused by moisture damage, and damaged wood attracts termites and other pests. If termites have eaten into a joist, it loses strength and can compromise your home's structural integrity-this needs professional attention fast.

The longer problems go unaddressed, the worse they get. You might notice settling, cracks in walls and foundation, hard-to-close doors, bowing floors, or sagging. These are all signs to call Priority Pest for a professional inspection.

At Priority Pest Services, we hold a Class A Contractors License and have the expertise to repair failing floor joists the right way. Call (757) 204-4523 to schedule your free home inspection today.