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Preventing Water Leaks in House Siding and Brick: A Practical Guide

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  //house-home.news-articles.net/content/2025/12/2 .. in-house-siding-and-brick-a-practical-guide.html
  Published in House and Home on Wednesday, December 24th 2025 at 21:58 GMT by Seattle Times

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Preventing Water Leaks in House Siding and Brick: A Practical Guide

When you look at a neighborhood in Seattle, you’re likely to see a mix of wood, vinyl, and brick exteriors. Each of these materials brings its own charm—and its own set of maintenance challenges. One of the most common problems homeowners face is water intrusion. Over time, rainwater can find its way under siding, through brick mortar, or along window and door trim, and the resulting dampness can wreak havoc on interiors, foundations, and even your indoor air quality. The Seattle Times’ “Explore” team tackled this issue head‑on in a recent article that lays out a clear, step‑by‑step strategy for keeping your home dry. Below is a concise summary of that guide, along with useful follow‑up links for deeper dives into related topics.

1. Why Water Leaks Matter

Before we jump into solutions, the article first explains why even a few small leaks can be catastrophic. Seattle’s wet climate means that rain is a constant threat; if water isn’t directed away from the foundation, it can seep into cracks, cause rot, and create a breeding ground for mold and mildew. In addition, leaks can weaken the structural integrity of the wall system and damage finishes inside—think peeling paint, warped trim, and ruined insulation.

2. Key Areas to Inspect

The article divides the home into a handful of high‑risk zones and gives a quick checklist for each:

The article emphasizes that a “regular walk‑around” during the rainy season is a good habit. A simple inspection can catch problems before they become costly repairs.

3. Immediate Repairs You Can Do

The guide breaks down quick fixes that most homeowners can handle without calling a pro:

1. Re‑Caulking Siding and Trim
   Use a high‑quality, exterior‑grade silicone or polyurethane sealant.
   Apply in a single continuous bead, smoothing it for a neat finish.

2. Replacing Damaged Brick Joints
   Remove cracked mortar with a chisel and a hammer.
   Apply new mortar using a pointing trowel, pressing it into the joint, and then smoothing.

3. Fixing Flashing
   Tighten any loose screws or nails.
   Replace any cracked or warped flashing with new metal or a flexible flashing tape.

4. Gutter Maintenance
   Clear leaves, debris, and clogs.
   Ensure downspouts discharge at least 3 feet away from the foundation.

4. Long‑Term Prevention Strategies

Once the immediate threats are addressed, the article shifts focus to more permanent measures. It highlights the importance of a holistic approach:

• Proper Ventilation
  Install or maintain attic fans to reduce moisture buildup above the roof deck, which can travel down into walls.

• Use of Drip Edge
  Install a drip edge on all roof edges; this small metal strip forces water away from the wall before it can seep in.

• Seal Windows and Doors
  Consider adding or upgrading weatherstripping. For older windows, installing a secondary “shut‑in” or adding a storm window can double the barrier.

• Choose the Right Siding Material
  Vinyl and fiber cement sidings are less prone to rot than wood and can be easier to maintain. If you love wood, treat it with a durable sealant and plan to replace or re‑seal every 7‑10 years.

• Professional Inspection
  The article recommends scheduling a professional siding or roofing inspection every 3‑5 years, especially after severe weather events. These inspections can spot hidden issues before they develop into leaks.

5. Product Recommendations

While the article stays largely material‑agnostic, it does provide a shortlist of vetted products:

• Sealants – “Sikaflex‑S3” and “Dap 2‑Part Silicone” are cited as favorites for their durability and UV resistance.
• Caulking Gun – A model with a 1‑inch nozzle gives better control for tight seams.
• Mortar – A high‑strength, flexible mortar like “Sika‑Mortar” is suggested for brick work because it can flex with the structure.

6. What to Do When Leaks Persist

If a leak continues after following the steps above, the article advises the following diagnostics:

• Check the Roof – A missing or damaged shingle can cause water to penetrate the siding.
• Inspect the Chimney – The chimney flashing is a frequent source of leaks.
• Foundation Inspection – A sagging foundation can create new gaps.
• Check for Interior Moisture – Moisture inside the walls can indicate leaks from above that have already reached the interior.

At this point, it’s typically time to call in a professional contractor who can use specialized tools (like moisture meters and infrared cameras) to pinpoint the source.

7. Follow‑up Resources

The Seattle Times guide links out to several supplemental articles that deepen your knowledge:

• “How to Choose the Right Siding for Your Home” – Offers a side‑by‑side comparison of wood, vinyl, fiber cement, and stucco, with cost and maintenance insights.
• “Roof Maintenance Checklist: Protect Your Home from the Top Down” – Provides a detailed inspection list for roofs, gutters, and flashing.
• “Understanding Brick Mortar: Types, Strength, and Repair” – Explores the science behind mortar and its importance in a brick wall’s life cycle.
• “DIY vs. Professional Repairs: When to Call the Experts” – Discusses risk assessment and cost-benefit analysis for common exterior repairs.

You can find these articles directly on the Seattle Times website under the “Explore” and “Home” sections.

8. Takeaway

Preventing water leaks is largely about proactive maintenance and timely repairs. The Seattle Times’ article reminds homeowners that a little vigilance—inspecting your siding, trimming, and flashing each season—can save you thousands in repair costs and protect your family’s health. By following the outlined steps, you can turn your home into a fortress against Seattle’s notorious rain.

Whether you’re a DIY enthusiast or prefer a professional’s touch, this guide provides a solid foundation for protecting your home’s exterior. And with the additional resources linked above, you can explore deeper nuances—whether you’re looking at a new siding installation or simply want to extend the life of your existing brickwork.