Roof Ice & Water Shield Installation in Portland, OR

A strong roof needs more than just shingles to keep your home protected. Ice and water shield acts as a critical waterproof barrier that stops moisture from sneaking under your roofing materials. We install this protective layer around all roof penetrations, in valleys, and against walls to create a watertight seal that prevents costly water damage.


At Portland Roofing Center, we use premium ice and water shield materials that adhere directly to your roof deck without requiring fasteners or nails, which eliminates potential leak points. This self-sealing technology creates an impenetrable barrier that protects against ice dams, wind-driven rain, and other moisture threats that could damage your walls, ceilings, and home structure.


Our expert team follows proven installation methods to ensure your ice and water shield provides 20-30 years of reliable protection. We take pride in doing the job right, using only top-quality materials and paying attention to every detail. Your home deserves nothing less than professional roof ice and water shield installation from Portland's trusted roofing experts.

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Components of Ice and Water Shield Systems

The main component is a rubberized asphalt membrane with a sticky backing that adheres firmly to your roof deck. We use high-grade materials that maintain flexibility in extreme temperatures. The top surface features a slip-resistant coating that makes installation safer for our crews. The bottom layer includes a removable backing that peels away during installation.


Most systems include both smooth and granular surfaces. We select the right type based on your roof's slope and local climate conditions. The membrane thickness ranges from 40 to 60 mils to provide reliable waterproofing. Premium shields include additional UV inhibitors to prevent deterioration from sun exposure.

Our Roof Ice & Water Shield Installation Process

A properly installed ice and water shield creates a strong defense against winter damage and water leaks. The right techniques and materials make all the difference in protecting your roof.

  • 1. Analyzing Roof Vulnerabilities

    We start by examining your roof's weak points where leaks commonly occur. The most vulnerable areas include valleys, eaves, and areas around chimneys or skylights. We check for signs of previous water damage or ice dam formation to identify critical spots needing extra protection.

  • 2. Choosing the Right Materials

    We use high-grade ice and water shield products that stick directly to your roof deck. The shield must be thick enough to seal around nail penetrations and flexible enough to handle temperature changes without cracking.

  • 3. Calculating Installation Cost

    The size of your roof and amount of coverage needed determine the base cost. Most homes require ice and water shield along all eaves, in valleys, and around penetrations. A typical installation runs between $4-8 per square foot including materials and labor.

  • 4. Installation Proper

    We start each installation by cleaning and drying the roof deck completely. The surface must be free from debris and old materials for the best adhesion.

  • 5. Ensuring Proper Roof Drainage

    We inspect all valleys and low spots to make sure water can flow freely to your gutters. Each seam gets sealed tight to prevent any water from seeping underneath.

  • 6. Maintenance and Upkeep

    We recommend checking your roof's condition twice per year - once in fall before winter hits and again in spring after snow melts. Look for signs of wear around valleys and edges where ice dams typically form. Keep gutters clean and clear to prevent water backup.

  • 7. Troubleshooting Common Issues

    Watch for water stains on interior ceilings or walls - these may indicate a compromised shield seal. Dark patches on exterior roof surfaces can mean trapped moisture underneath.

Schedule Your Ice & Water Shield Installation

Let us safeguard your home with professional ice and water shield installation. Our Portland roofing experts are standing by to help protect your investment. Book your appointment today by calling our office or using our online scheduler. We'll respond within 24 hours to set up your consultation.

Ice Dam Prevention Strategies

We install specialized ice and water shield membranes along your roof's eaves, valleys, and other vulnerable areas. These self-adhering barriers stop ice dams from forcing water under your shingles and into your home.



The rubberized asphalt membrane seals tightly around nails and creates a waterproof layer between your roof deck and shingles. This prevents backed-up water from seeping inside during freeze-thaw cycles.


We recommend extending the shield at least 6 feet up from the eaves and 3 feet into valleys. This coverage pattern maximizes protection in the spots where ice dams typically form.

Enhancing Roof Weatherproofing

Our premium ice and water shield products create a complete moisture barrier that works year-round. The sticky backing bonds directly to your roof deck, while the textured surface helps shingles adhere properly.


We install additional protection around chimneys, skylights, and other roof penetrations. These areas need extra attention since they're common entry points for water.


The shield's modified bitumen composition resists UV damage and maintains flexibility in extreme temperatures. This means your roof stays protected through summers and winters.


With proper installation, you can expect 20+ years of reliable performance from your ice and water shield system. The membrane continues sealing and protecting even as your shingles age.

FAQs on Roof Ice & Water Shield Installation

If you're a Portland homeowner or business dealing with wet, freezing conditions, ice and water shield installation is a smart move to prevent roof leaks and long-term water damage. Below are common questions clients ask about this protective roofing layer and how it works for homes in the Portland climate.

  • What is ice and water shield, and why is it needed in Portland?

    Ice and water shield is a self-adhering waterproof membrane installed under shingles. In Portland, where rain and occasional freezing happen, it helps stop leaks caused by ice dams and wind-driven rain.

  • Where is ice and water shield installed on my roof?

    It’s typically applied to eaves, valleys, roof penetrations (vents, chimneys), and other leak-prone areas before shingles are laid.

  • Can ice and water shield be added to an existing roof?

    No, it must be installed during new roof installation or a full roof replacement. It’s applied directly to the roof deck.

  • Will installing ice and water shield raise my roofing cost?

    Yes, slightly—but the added protection from leaks and future repairs is worth the investment, especially in Portland’s damp climate.

  • What type of ice and water shield do you use?

    We use high-quality, self-sealing rubberized asphalt membranes rated for Portland’s weather and compatible with asphalt shingles, metal, and more.

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