Phone answered 24/7 · Tucson, AZ and nearby communities

Call 24/7: (520) 286-8912
Pima County Dry-Out ProsWater Damage Help · Tucson, AZ

How Do You Prevent Flood Damage to a Home?

Last updated October 25, 2026

Call Now (520) 286-8912

The short answer

Maintain Your Gutters and Landscape

Clogged gutters and downspouts cause water to spill over, soaking the ground near your foundation. You should clean them twice a year, and more often if you have many trees. Ensure downspouts extend at least five feet away from your home's base. This simple step directs rainwater away, preventing pooling that can lead to leaks and structural issues.

Proper landscape grading is another essential defense. The ground should slope away from your home's foundation for at least ten feet. Use soil to create a gentle grade, and consider planting deep-rooted native, drought-tolerant plants that can also absorb excess water during rare storms. Avoid piling mulch or soil directly against your siding, as this can trap moisture and cause damage over time.

Install Protective Barriers and Seals

Flood vents and backwater valves are mechanical barriers that can prevent major damage. A backwater valve, installed in your main sewer line, stops sewage from backing up into your home during a flood. Flood vents, placed in your foundation or crawlspace walls, allow water to flow through, equalizing pressure and preventing structural issues from water buildup. In homes on a slab, sealing the perimeter is especially important.

  • Install a backwater valve in your main sewer line.
  • Add flood vents to your foundation or crawlspace walls.
  • Seal cracks in your concrete slab or foundation with hydraulic cement.
  • Apply waterproof sealant around all windows and door frames.
  • Use weatherstripping on exterior doors.
  • Keep sandbags or a removable barrier for doorways on hand.

Elevate Critical Utilities and Belongings

Your electrical panel, HVAC system, water heater, and major appliances are vulnerable to floodwater. Raise these items above your home's expected flood level, which could be just a few inches. For example, you can place a furnace or water heater on concrete blocks or a platform. This prevents costly damage and keeps essential systems running after water recedes.

Move valuable items and important documents out of lower floors or areas prone to water intrusion. Store sentimental items, financial papers, and electronics in waterproof containers on high shelves. Avoid using low areas for long-term storage of irreplaceable items. Consider creating a digital inventory and backup of important documents stored securely in the cloud or at an off-site location.

Prepare an Emergency Action Plan

Know how to shut off your home's utilities quickly. Locate your main electrical panel, gas shutoff valve, and main water valve. Ensure every adult in your household knows where they are and how to operate them. In a flood emergency, turning these off can prevent fires, electrocution, and additional water damage from broken pipes.

Create a family communication plan and assemble an emergency kit. Your kit should include a battery-powered radio, flashlights, spare batteries, a first-aid kit, and non-perishable food and water. Keep important phone numbers, including those for your insurance company, in a waterproof bag. Practice your evacuation plan so everyone knows what to do. Knowing how to contact local water damage pros for after the event is also wise.

Understand Your Insurance Coverage

Standard homeowners insurance policies typically do not cover flood damage. You need a separate flood insurance policy, which has a 30-day waiting period before it takes effect. Review your policy details carefully to understand what is and is not covered, including limits for your home's structure and your personal belongings. Policies vary, and your insurer decides what is covered.

Document your home and its contents before any disaster occurs. Take photos or videos of every room, including closets, drawers, and your garage. Keep receipts for major purchases. This documentation is crucial for filing an accurate and complete insurance claim. Store a copy of this inventory, along with your insurance policies, in a secure, waterproof location away from your home.

  • Standard home insurance does not cover floods; a separate policy is needed.
  • Flood insurance has a standard 30-day waiting period after purchase.
  • Document your home and belongings thoroughly with photos or video.
  • Know your policy's coverage limits for structure and personal property.
  • Keep policy documents in a secure, waterproof place.
  • File claims promptly if damage occurs.

Water damage does not wait

Every hour counts once water gets into floors and walls. One call starts the response.

Call Now (520) 286-8912

Frequently asked questions

What is the most important thing to do before a flood?

The most critical step is to move people and pets to higher ground immediately. Then, if it is safe to do so, turn off your home's electricity and gas at the main valves to prevent fire and electrocution. Do not enter flooded areas to retrieve belongings.

Can I prevent flood damage in a low-lying area of my home?

You can reduce flood risk in low-lying spaces. For homes on a concrete slab, sealing any cracks in the slab or where it meets the walls is a priority. Keep valuable items off the floor. Consider installing a water alarm to alert you to moisture early.

Who should I call after floodwater enters my home?

Once it is safe, contact your insurance company to start a claim. Policies vary, and your insurer decides what is covered. Then, call local water damage pros. They have the proper equipment for safe water removal and drying. Avoid handling contaminated water yourself, as it can pose health risks.

Call Now (520) 286-8912