J National

What They Do

Water DamageFire and Smoke

• Drywall installation
• Drywall repair
• Exterior painting
• Fan installation
• Fan repair
• Gutter cleaning
• Install flooring
• Paint indoors
• Plumbing fixture installation
• Refurbishment
• Remodeling
• Repair flooring
• Repair water fixtures
• Tile work installation
• Tile work replacement
• Custom Carpentry Work
• Electrical Repairs
• Fire Damage
• Foundation Repair
• Full House
• Leak Detection
• Plumbing Repairs
• Property Restoration

In Their Own Words

Founded in 2000 by industry veteran Jay Katav, J National is a full-service property repair company serving Texas and surrounding states. With 25+ years in business and a team of more than 100 skilled professionals, we’re the one-stop shop for all property repair needs for multi-family communities, commercial, and residential properties. From routine maintenance to large-scale remodels, we work around the clock to deliver high-quality results on time and on budget. Jay’s decades of hands-on construction experience set the standard for our commitment to unmatched craftsmanship, reliable service, and fair pricing. Whether it’s a midnight emergency or a planned renovation, J National is ready 24/7 to get the job done right.

Written by the business on its public profile. We have not verified these claims.

Before You Call J National

1. Do you take moisture readings every day and will you give me the drying log?
2. Are your technicians certified in water damage restoration?
3. How will you deal with smoke odor inside wall cavities and the HVAC ducts?
4. Do you do contents pack out, and will I get an itemized inventory?

For mold jobs of 25 contiguous square feet or more, ask for a Texas mold remediation contractor license and look it up with the Texas Department of Licensing and Regulation. Also ask for proof of insurance and industry certification for the technicians.

How Their Reviews Break Down

Counts from public listings as of September 23, 2026. A handful of reviews says less than a few hundred.

Read This While You Wait

• DIY with careWhat to Do in the First 24 Hours After Water DamageAn hour by hour plan for the first day after water damage. Make it safe, stop the source, document, remove water and start drying before mold can start.
• Call a proThe First 48 Hours After a House FireWhat to do in the first two days after a house fire. Safe re-entry, utilities, insurance calls, securing the home, food, medicine and what never to clean.
• DIY friendlyWasher, Dishwasher, Fridge and Toilet Supply Line LeaksHow washer hoses, dishwasher lines, ice maker tubing and toilet supply lines fail, how to clean up each kind of leak, and how to replace a line yourself.
• Call a proElectrical Safety After Water or Fire DamageHow to stay safe around electricity after a flood, leak or fire. When to shut off power, when to call the utility, what to replace and the warning signs.