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1. Water Leaks and Ponding Water

The Problem:

Seattle is known for its consistent rainfall, with an average of 38 inches per year. For flat or low-slope commercial roofs, this rain can lead to ponding water, where water pools and doesn't drain properly. Over time, this can break down roofing materials, cause leaks, and even lead to structural damage.

Prevention Tips:

• Regular Inspections: Schedule professional Seattle commercial roof inspections at least twice a year, especially before and after the rainy season.
• Proper Drainage Systems: Ensure that your roof has functional drains, gutters, and downspouts to carry water away efficiently.
• Roof Slope: While flat roofs are common, slight modifications to increase slope can help improve drainage.
• Roof Coatings: Consider applying a waterproof roof coating to help protect your roof from water absorption.

2. Moss and Algae Growth

The Problem:

Seattle's damp climate also creates the perfect environment for moss and algae growth, especially on shaded areas of commercial roofs. Moss can trap moisture against the roofing material, leading to deterioration and leaks.

Prevention Tips:

• Regular Cleaning: Schedule routine roof cleanings to remove moss and algae buildup. Pressure washing can be effective but should be done by professionals to avoid damage.
• Zinc or Copper Strips: Install zinc or copper strips along the roof ridge. When rainwater flows over these strips, it releases small amounts of metal that inhibit moss growth.
• Trim Overhanging Branches: Trees that provide shade can increase moss growth. Regularly trim overhanging branches to allow sunlight to reach the roof, reducing moisture retention.

3. Wind Damage

The Problem:

Seattle experiences windstorms, especially during the fall and winter. High winds can lift roofing materials, loosen fasteners, and cause membrane damage, particularly on commercial roofs with large surface areas.

Prevention Tips:

• Routine Maintenance: Seattle commercial roof maintenance is essential. Check for loose or damaged shingles, membranes, or fasteners during regular inspections.
• Secure Flashing: Ensure flashing around roof edges, vents, and chimneys is properly secured to prevent wind uplift.
• Use Wind-Resistant Materials: When installing or replacing a roof, consider materials rated for high-wind resistance, such as reinforced membranes or durable metal roofing.

4. Poor Installation Practices

The Problem:

One of the most common reasons for commercial roofing issues is poor installation. If the roof wasn’t installed correctly, it can lead to water leaks, premature wear, and other costly problems down the line.

Prevention Tips:

• Hire Licensed Professionals: Always work with a reputable commercial roofing contractor like Axiom D7, ensuring proper installation techniques are used.
• Verify Roofing Credentials: Ask for references, check licenses, and ensure your contractor follows manufacturer specifications to guarantee quality installation.
• Warranties: Ensure that your roofing system comes with a solid warranty. This can provide peace of mind and protect you in case of any future issues related to the installation.

5. Roof Membrane Damage

The Problem:

Commercial flat roofs often use single-ply membranes like TPO (Thermoplastic Polyolefin) or EPDM (Ethylene Propylene Diene Monomer). These membranes can become damaged due to weathering, UV exposure, or foot traffic, leading to cracks, punctures, or tears.

Prevention Tips:

• Limit Roof Access: Restrict access to the roof and ensure only trained personnel walk on the surface. Installing walk pads can minimize membrane damage.
• UV-Resistant Materials: Opt for roofing materials that have built-in UV resistance or apply a reflective coating to protect the membrane from sun damage.
• Regular Inspections: Early detection of small cracks or punctures can prevent larger, more expensive problems later on.

6. Thermal Expansion and Contraction

The Problem:

Seattle’s climate can fluctuate between cold winters and mild summers. These temperature changes cause roofing materials to expand and contract, which can lead to cracks, splits, or warped surfaces.

Prevention Tips:

• Use Flexible Materials: Choose roofing materials designed to handle temperature fluctuations, such as TPO or EPDM, which are better suited for expansion and contraction.
• Install Expansion Joints: Expansion joints help absorb the movement caused by temperature changes, reducing stress on the roofing materials.

7. Roofing Material Deterioration

The Problem:

Over time, all roofing materials will deteriorate due to constant exposure to the elements. In Seattle, the combination of moisture, wind, and UV exposure accelerates this process.

Prevention Tips:

• Roof Coatings: Apply protective roof coatings that can extend the lifespan of your roof by offering an extra layer of defense against moisture and UV rays.
• Scheduled Maintenance: Regular roof maintenance can help identify signs of deterioration before they become serious issues. If your roof is nearing the end of its lifespan, consider re-roofing before significant damage occurs.

 

Seattle's weather can be tough on commercial roofs, but regular maintenance and preventative measures can make all the difference. By staying ahead of common roofing issues like water leaks, moss growth, and wind damage, you can protect your investment and avoid costly repairs. At Axiom D7, we specialize in commercial roof inspections, repairs, and preventative maintenance designed to handle Seattle’s unique climate challenges.

If you're experiencing any issues or want to schedule a roof inspection, contact us today to ensure your commercial roof stays in top shape year-round.