5 Waterproofing Solutions for Metal Roofs in Austin, TX

Written By Cody Profitt

In Central Texas, where sudden storms and intense heat are part of life, a properly waterproofed roof isn’t a luxury—it’s a necessity. At Comanche Roofing, we believe prevention is the best form of protection. Whether you’re dealing with an older roof or simply preparing for the next rainy season, here’s a step-by-step guide to help you understand how to effectively waterproof your roof.

1. Conduct a Thorough Roof Inspection

Before applying any waterproofing products, it’s crucial to assess the current condition of your roof. Look for:

Cracked or curling shingles
Worn-out flashing around vents and chimneys
Soft spots or water stains in the attic
Areas where water tends to pool

Pro Tip: Let a professional roofing team—like ours at Comanche Roofing—perform a detailed inspection to catch what might be missed from ground level.

2. Clean the Roof Surface

Dirt, debris, and mildew can prevent waterproofing products from adhering properly. Cleaning the roof is essential:

Remove leaves and branches
Power wash dirt and grime
Treat mold or algae growth

A clean, dry roof ensures that waterproofing materials will bond effectively.

3. Seal Vulnerable Areas

Certain spots on your roof are more prone to leaks, including:

Flashings
Skylights
Roof penetrations (vents, pipes, chimneys)

We apply heavy-duty roofing sealants or caulking to all these areas, creating a tight seal against water intrusion.

4. Apply a Waterproof Membrane or Coating

This is where the real protection begins. Depending on your roof type, we’ll recommend the best waterproofing solution:

Liquid Membrane Coating: Ideal for flat or low-slope roofs; creates a seamless, rubber-like barrier.
Bitumen Sheets: Great for commercial roofs; easy to apply and highly durable.
Peel-and-Stick Underlayments: Used beneath shingles for extra moisture protection on pitched roofs.

At Comanche Roofing, we only use premium, weather-tested materials to ensure long-lasting protection.

5. Ensure Proper Drainage

Even the best waterproofing won’t help if water can’t flow off your roof. We inspect and upgrade:

Gutter systems and downspouts
Roof slopes to prevent pooling
Drainage outlets on flat roofs

Keeping water moving is just as important as keeping it out.

Bonus Tip: Maintain Your Roof Regularly

Waterproofing is only as effective as your roof’s ongoing care. We recommend:

Biannual roof inspections
Prompt repair of any storm damage
Cleaning your gutters and removing debris after every season

Can I waterproof my roof myself?

Yes, but with caution. Homeowners can handle minor waterproofing tasks—like applying sealant or patching small areas—if the roof is easily accessible and in good condition. However, DIY waterproofing has its risks. Without the right products, tools, or experience, small mistakes can lead to bigger (and costlier) problems down the road.

Trust the Experts at Comanche Roofing

Still Having Roofing Issues?

If you’ve followed all the essential steps and you’re still seeing leaks, sagging, or signs of water damage, it may be time for something more serious—like a roof repair or full replacement.

That’s where Comanche Roofing comes in. Our experienced team will assess the damage, explain your options, and provide a long-term solution that protects your home and your wallet.

Call Comanche Roofing at (512) 796-9175 for a free estimate today.

We’re proud to serve Austin and surrounding areas with honest, reliable roofing you can count on.