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How Important is ICE and Water Shield?


What is Ice and Water Shield?

Ice & water barrier, sometimes also referred to as ice & water shield, is a protective layer that would be applied on top of the deck of your roof. Ice and water shield has an adhesive on one side that seals to your roof deck around the nails driven through. This waterproof seal works to protect your home in your most vulnerable areas. As discussed, it is standard to put this on your eaves, but it is common to have it be in other particularly susceptible areas of your roof as well, such as in the valleys, or perhaps surrounding any vents, chimneys, or other existing facets of your roof. The goal of putting this miracle-working underlayment on your lovely home is simple: preventing all of those nasty ice dams and leaks. How this works is that once that pesky excess water reveals itself, and would normally penetrate the shingle and have a shot at making it to your attic virtually unscathed, the ice & water shield acts as a line of defense, preventing this moisture from leaking through, and safely escorting it down to the gutters and off of your roof. One important aspect of this whole system that is not to be overlooked is that to operate at its highest level of efficiency, the ice and water shield must be placed at least 24 inches inside the nearest heated wall of your home, ensuring that this defensive layer of underlayment has enough space to work its magic.

Why is Ice and water barrier Important?

The reason why this is an issue is because of what happens as a result. The portion of the roof that your gutters are attached to is what’s known as the “eave”. As those dams form, all of that ice, and the subsequent moisture that it carries along with it, can be forced underneath the shingles on your roof, bleeding down past your decking, and eventually making a very unwelcome appearance on the interior of your home, most comparable to your in-laws on Thanksgiving (kidding, of course). Well, the more curious of minds might now ask, “what can I do to prevent that?”.Then your best move is to make sure that you’re equipping your roof with Ice & Water Barrier. In addition to this unprecedentedly breathtaking level of functionality, ( I think you’ll really enjoy this part), ice & water shield being present on your home can save you countless of your hard-earned dollars in the long run, or, whenever that next storm might get conjured up in the clouds above your neighborhood. If your home were to sustain storm damage and you were to discover some new leaks on that ceiling right above that living room you work so hard to clean, over the kitchen you just redid with all new appliances, or even signs of damage right above your bed, staring you in the face and seemingly mocking you as you sleep at night, that is something that you’ll surely want to be taken care of, and who wants to be the one paying to fix all related potential damages there? I can very well guarantee you that I wouldn’t! This is just one of another reasons why ice & water barrier is a vital addition to your home, so you can prevent those things from taking place. Places to make sure you are getting ICE and WATER Shield:


  1. 3 Feet from the gutter sometime 6 feet depending on over hang.

  2. Around and Chimney and pipes.

  3. Up the walls with any flashing.

  4. In all of the Valleys.

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