Archive for the ‘Ice Dams, Misc.’ Category
Friday, February 3rd, 2017
The Relationship Between Ice Dams and Icicles
Do Icicles Mean Ice Dams?
You may notice that the home shown below has some icicles (sarcasm intended). Obviously, when something like this occurs, it is quite likely that you have ice dams as well as a giant insurance claim from the subsequent water damage it has caused. The fact is, the vast majority of the ice dam steaming projects we complete are not on homes with monster icicles. When we arrive we often see quite modest icicles from the ground. The relationship between icicles and ice dams is not difficult to understand when you study the problem for awhile. This Case Study digs into the topic of icicles and ice dam life cycles.
Do icicles mean ice dams? The short answer is NO. While icicles on the edge of the roof are often a precursor to ice dams, they are not always present when ice dams begin to cause leaks through a roof system. Ice dams and icicles are part of the same accumulation but they are not the same thing by any means. This brings us to the normal life cycle of an ice dam.
The characteristics of ice dams change over time. The typical lifespan of an ice dam rangers from a few days to a few weeks. During that time it may get thicker or thinner, icicles may appear and disappear on its’ leading edge, and it may be almost completely hidden under snow or partially or completely exposed. For this reason, there is a big different between a young ice dam and an old ice dam in terms of the presence of icicles. Very young ice dams often have visible icicles on their leading edge. Over the following days most ice dams tend to grow more in depth than thickness, meaning the ice migrates higher up on the roof plane (refer to Case Study #06 for more information). Icicles on more mature ice dams tend to melt away from the affects of direct sunlight or warmer outdoor temperatures. However, while the telltale icicles may be missing, the mass of the ice dam is left behind, frequently hidden under a blanket of snow.
The photos above (A) and (B) demonstrate this phenomenon on two St. Louis Park homes. Virtually no traditional signs of an ice dam and yet you see water leaking down the exterior wall, through the siding and in the wall cavity itself. Bad news.
Case Study #16 examines the important topic of ice migration, from icicles to the interior of your home.
To read more Case Studies click here.
Tags: about ice dams, best ice dam removal in minneapolis, best rated ice dam removal contractor, edina ice dam removal, highest rated ice dam removal company in minneapolis, how do I know I have ice dams, how to file an insurance claim for an ice dam, ice and snow removal, ice dam expert, ice dam heat cable, Ice dam heat tape, ice dam prevention, Ice dam removal, ice dam removal jerks, minneapolis ice dam removal, twin cities ice dam remover, wayzata ice dam removal
Posted in Ice Dam Heat Tape, Ice Dam Prevention, Ice Dam Removal, Ice Dams, Misc., Ice Dams: General Info, Water Damage | Comments Off on Icicles and Ice Dams
Tuesday, December 20th, 2016
The Relationship Between Sunshine and Ice Dam Formation
Ice dams happen when there is a section of roof that is above freezing (32°) where roof snow melts which then drains to an area that is below freezing, usually the eaves, where it refreezes. The source of this temperature differential is usually the result of interior heat loss, specifically via air leaks and insulation issues. In fact, according to our experience, 95% of our client’s ice dam problems can be mitigated or eliminated altogether through the modification of the thermal characteristics of the home. Still, we see ice dams on certain homes for reasons outside the scope of it’s architectural deficiencies. Homes with what we might call nearly perfect air-sealing, insulation and ventilation still get ice dams. This Case Study describes such a situation.
The winter sun hits Minnesota homes (and all homes in this latitude) at a low angle during the winter. The result is that certain roof slopes never see direct sunlight while others get hit quite directly. The above illustration demonstrates an ice dam situation that relates to the heating effects of the sun. Solar radiation warms the roof slope on the dormer (1), the resulting melt water drains to an area of the home (2) that never sees direct sunshine where it refreezes to form an ice dam (3). These are particularly challenging ice dams to prevent. Often times heat tape, also known as heat cables, are the only affordable option.
To read more Case Studies click here.
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Posted in Ice Dam Prevention, Ice Dams, Misc., Ice Dams: General Info | Comments Off on Sun and Ice Dams: Cause and Effect
Monday, December 19th, 2016
Ice dams have begun.
In my travels around Minneapolis today looking at ice dam prevention jobs, I noticed a number of homes that already exhibit signs of ice dams. To be more specific, I noticed water and ice coming down the siding and in through the eaves on a number of homes such as the one shown here. This represents a clear signal that water is backing up behind an accumulation of ice on the roof and going where it’s not supposed to go. Want more signs of ice dam issues, click here. With another snowstorm approaching on Christmas, I’m predicting that this might be another troublesome year for Minneapolis homeowners relative to ice dams.
Ice dam removal Minneapolis
What can you do? Unfortunately, once ice dams form and begin to cause problems, the only answer is to have them professionally removed. We use true steamers, machines that superheat water to steam. How do you tell the difference between a high temperature pressure washer used by competitors and a steamer? It’s simple. Does the gun have a trigger or not? If it has a trigger, it is simply NOT a steamer. IDSAFE, a unique organization whose entire purpose is to educate property owners on ice dam steaming, can be found here. The Ice Dam Company is a proud member of IDSAFE. All of our machines have been verified to meet the standards of true ice dam steamers, unlike two of the largest ice dam removal companies in the Twin Cities. (You know who you are!).
Of course the better answer to ice dam removal in Minneapolis is ice dam prevention. We engage in more ice dam prevention work than anybody in the United States, employing both architectural solutions and non-architectural solutions which includes heat tape and heat cable, insulation, roofing, remodeling and general home performance inspections.
Our sister company, Kuhl’s Contracting, engages in the hundreds of attic insulation retrofits and reroofing projects every year in Minneapolis and surrounding communities to address the underlying causes of ice dams. Kuhl’s Contracting also installs heat cable and heat tape on commercial properties and residential properties all over Minnesota. We are proud to sell HeatTapePro, made by Radiant Solutions Company, a premium self-regulating commercial grade heat cable available on a number of online retailers including Amazon. HeatTapePro can also be purchased at The Heat Cable Store, an online direct-to-consumer website that sells a number of heat cable and heat tape products by different manufacturers. Of course, you may also buy HeatTapePro here, at The Ice Dam Company Store.
Click here to schedule an appointment with our ice dam removal or ice dam prevention teams.
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Posted in Ice Dam Heat Tape, Ice Dam Prevention, Ice Dam Removal, Ice Dams, Misc., Ice Dams: General Info | Comments Off on Ice Dams Are Happening!
Thursday, December 15th, 2016
A Simple Explanation of Where the Water Goes When Ice Dams Cause Leaks
Where the Water Travels:
Water hitting the Top Plate of the wall (A) spreads out across the top plate, travels downward with gravity, working behind the Siding (B) the Housewrap (C), the Insulation (D), the Vapor Barrier (E) and the Drywall (F). Water always seeks the path of least resistance and therefore frequently shows up through existing penetrations in the ceiling such as lights. Water leaks caused by ice dams can travel many feet from the source before manifesting inside the home. On homes built with vapor barriers on top of the ceiling finish, water will sit on top of the drywall and soak the insulation before leaking inside.
To read more Case Studies click here.
Tags: about ice dams, best ice dam removal in minneapolis, best rated ice dam removal contractor, edina ice dam removal, edina ice dam steaming, heat tape, heat tape ice dam, heat tape ice dam prevention, highest rated ice dam removal company in minneapolis, how do I know I have ice dams, how to tell if an ice dam is a problem, ice and snow removal, ice dam heat cable, orono ice dam removal, twin cities ice dam remover, wayzata ice dam removal
Posted in Ice Dams, Misc., Ice Dams: General Info | Comments Off on Close Up of an Ice Dam Leak
Tuesday, December 13th, 2016
Ice Dams on Mansard Roofs Can be a Seriously Big Headache to Remove
Roof Styles Affect Ice Dam Severity
As discussed in Case Study #16, there can be some serious problems if homeowners decide to remove snow from only a portion of the roof plane affected by ice dams. We call it the ‘Double Dam’, which refers to the fact that ice dams can grow much further up the roof when only lower sections of snow are removed (commonly done with roof snow rakes because they can’t reach high enough on the roof).
Mansard roofs, such as this one from Edina, Minnesota, can create massive ice dams when the steep pitch (B) is cleared of snow. This is amplified when the slope has directional bias towards the north because the sun will not help melt the ice as it accumulates. In the photo, below, we see two ice dam problems on this Edina mansard roof. The traditional location (A) is exacerbated by the low roof pitch (Case Study #09 explores the relationship between roof pitch, or roof slope, and ice dams). Area B has an ice dam that covers the entire span of the roof slope. This took many hours to remove even with our commercial ice dam steaming equipment.
Which Ice Dam Do You Want?
Ice dam #1 is not the one you want. Ice dams like this take hours to remove with steam, which is the most efficient and safe method for removing ice dams. This ice dam is thin but it has grown many feet up the roof. Ice dam #2 is an easier problem to resolve.
To read more Case Studies click here.
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Posted in Ice Dam Prevention, Ice Dam Removal, Ice Dams, Misc., Ice Dams: General Info | Comments Off on Mansard Roof Ice Dams
Monday, December 12th, 2016
What Frost Melt Patterns Can Tell You About Your Home
Insulation and Ice Dams
At their most fundamental level, ice dams are the result of the interaction of heat loss and snow on your roof. An experienced Ice Dam Company Thermographer can use photos like these in conjunction with infrared imaging to see the weak points in your home’s thermal envelope. If you have a moment on the next frosty morning, take a few photos of your roof from a few angles before the sun hits it. Those photos may end up saving you time and money if you are hoping to fix the root cause of ice dams and home heating inefficiencies. Of course, ice dam prevention involves more than simple insulation job, but understanding the basics through frost pattern analysis, thermal imaging and a good site inspection is a great place to start.
To read more Case Studies click here.
Tags: about ice dams, best ice dam removal in minneapolis, best rated ice dam removal contractor, highest rated ice dam removal company in minneapolis, ice and snow removal, ice dam expert, ice dam removal jerks, minneapolis ice dam removal, thermal inspection, water damage
Posted in Ice Dam Prevention, Ice Dam Removal, Ice Dams, Misc., Ice Dams: General Info, Water Damage | Comments Off on Ice Dam Prevention: Go Thermal
Thursday, December 8th, 2016
How Using a Roof Rake Can Make Ice Dam Problems Much, Much Worse
You may have read that removing snow from your roof will prevent ice dams, and for the most part that is true. Ice dams get their fuel (i.e., water) from the snow on your roof after all. Remove the snow, remove the problem. So this winter you buy a roof rake, brave the cold and remove as much snow from you roof as you can, leaving a section of snow still in place higher on the roof that you couldn’t reach. A few weeks pass and bam! You see water leaking through your ceiling. How can this be? The answer lies in a phenomenon we call the ‘double dam’, something we have seen over a hundred times in the past decade alone. Our graphic below helps explain the how and why.
Ice Dams Prevention: How Much Snow Should be Shoveled From a Roof?
Of the two ice dams illustrated above, the Double Dam presents a couple of challenges beyond those of the regular ice dam. First, because ice has grown further up the roof slope, the subsequent leaks inside will cover a wider area. The second problem with a Double Dam is the cost of removal. Although half the thickness, it may take two to three times longer to remove than a regular ice dam. More time equals more money.
Shown below is a very typical Double Dam. This home in Minnetonka, Minnesota had been leaking from both ice dams and the cost to remove them was tremendous. Area A is where the average ice dam likes to form. Area B only forms when someone does an incomplete snow removal job from the roof. So what is the take-away from this case study? Remove all the snow from roof slopes that may produce an ice dam or remove none at all. While the latter may result in an ice dam happening on the lowest edge of the eave, at the very least it won’t be a Double Dam.
To read more Case Studies click here.
Posted in Ice Dams, Misc. | Comments Off on When Roof Shoveling Can Cause Problems
Thursday, December 8th, 2016
Observations on the Effectiveness of Ice Melting Compounds on Ice Dams
Can Dad’s Old Pantyhose Save Your Home?
Over the past 25 years we have seen many different methods used to address ice dams. More often than not those measures are reactive, not proactive. Thus is the case of the lowly salt sock, otherwise known as a cloth tube of some sort filled with an ice melting compound of some sort.
Salt socks work on the principle that the ice melting compound is contained in a linear form which, when laid across an ice dam, will melt a channel through the ice. That path would then presumably be used as an escape route for water that may tend to get trapped behind the ice dam. The purpose of the sock is to hold the ice melting material in place, thereby concentrating the melting action. (Yes, that was a cross-dressing joke about dad).
Concept Vs. Reality
The only problem with the sale sock is that it simply doesn’t work. The examples below show typical results. In theory, salt socks seem like a great idea. In practice, however, using them to deal with an ice dam is not practical. One problem is that in order for them to do their intended job (Cut channels through the ice dam) they need to be placed somewhere meticulously, every 16″ or so. That’s a lot of socks. Next, we see that they tend to only melt about 90% down through the ice dam and then putter out. We have no idea why they don’t melt a clean slot right down to the roofing material but it never happens? The net result is that the melt water that causes ice dams, and the leaks that follow, still can not find a way off the roof. That’s bad. Perhaps the most dangerous part of using salt socks (outside of balancing on a ladder to position them all perfectly) is that they create a false sense of hope. Homeowners tend to ‘install’ them and not look back. That is, until water is dripping through the ceiling.
These salt socks didn’t melt down to the roof, resulting in massive water damage to the interior walls. (Can you find the ice on the siding?)
Sad and ineffective pantyhose, encased in ice.
Here’s the bottom line: Don’t use salt socks or pantyhose filled with ice melting compounds to manager your ice dam problem. It simply doesn’t work.
To read more Case Studies click here.
Tags: about ice dams, best ice dam removal in minneapolis, best rated ice dam removal contractor, highest rated ice dam removal company in minneapolis, ice and snow removal, ice dam expert, ice dam heat cable, ice dam removal jerks, ice dam removal with pantyhose, pantyhose and ice dams, right vs wrong way to remove ice dams, salt socks and ice dams, signs of an ice dam problem, twin cities ice dam remover
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Thursday, December 8th, 2016
How Roof Pitch (Roof Slope) Affects the Impact of Ice Dams on Standard Residential Construction
Fact: The Flatter the Roof, the Less Ice it Takes to Cause Problems
As discussed in previous Ice Dam Company blogs and Case Studies, there is a strong relationship between roof slope and the timing and likelihood of damage as the result of ice dams. Specifically, low roof slope areas are far more susceptible to damage by small ice accumulations than areas of steeper slope. Why? It comes down to basic geometry. Study the diagrams, below. You can see that the high slope roofs (C) require a pretty thick ice dam to form before water will begin leaking into the home. Eave depth plays another important role. See Case Study #10 for more information.
Ice dams create leaks when melted water from higher on the roof slope hits a dam of ice and is forced to travel backwards, up and under the plus of the roofing system (typically asphalt shingles). When that backward motion occurs outside the plane of exterior wall (dotted red lines in diagrams), the water runs down the exterior wall or through the soffits (zone indicated by happy face). As soon as the water falls on top of the top plate of the wall it seeps down through the wall causing damage to insulation, finishes and flooring (zone indicated by sad face). Truthfully, water coming through your soffits is nothing to be happy about. The next step is the interior of your home so it is considered an emergency in terms of the progression of the ice dam. As mentioned before, if you see ice coming through the soffit or down the exterior wall, it’s time to get that ice dam removed.
Wayzata Residence with Low Pitch Roof Suffers the Consequence
Seen below is a home in Wayzata, Minnesota where we steamed an ice dam a couple of years ago. The construction assembly was typical 2×6 walls, 12″ eaves, 6″ facia with a 2/12 roof pitch. From the ground, no ominous, threatening icicles could be seen, just a couple of pathetic whiskers of ice off the face of the gutter through the soffit (D). Pan out and you see that the entire exterior wall was bleeding ice through the siding. This is bad. This home had massive damage to the interior insulation, drywall and flooring systems.
As discussed in Case Study #06, low pitch roofs also tend to create ‘deeper’ ice dams (E), where the ice has grown further up the roof. Deep ice dams take far longer to remove.
Three take-aways:
- No icicles does not mean no ice dams.
- Low pitch roofs present higher risks in terms of how quickly small ice dams can cause big problems.
- Ice or water coming down the exterior wall in below freezing conditions is bad. Very, very bad.
To read more Case Studies click here.
Tags: about ice dams, best ice dam removal in minneapolis, best rated ice dam removal contractor, commercial ice removal, edina ice dam removal, edina ice dam steaming, highest rated ice dam removal company in minneapolis, how do I know I have ice dams, ice and snow removal, ice dam expert, ice dam heat cable, ice dam prevention, ice dam removal jerks, twin cities ice dam remover, wayzata ice dam removal
Posted in Ice Dam Prevention, Ice Dam Removal, Ice Dams, Misc., Ice Dams: General Info, Water Damage | Comments Off on Roof Pitch and Ice Dams: Part 1
Monday, December 5th, 2016
1. Water Damage
2. Ruined Insulation
3. Mold and Mildew
4. Gutter Damage
5. Property Damage
6. Soffit Damage
7. Landscaping Damage
8. Falling Ice
9. Flooring Damage
To read more Case Studies click here.
Tags: about ice dams, best ice dam removal in minneapolis, best rated ice dam removal contractor, commercial ice removal, edina ice dam removal, edina ice dam steaming, gutter deicing wire, highest rated ice dam removal company in minneapolis, how do I know I have ice dams, how to file an insurance claim for an ice dam, ice and snow removal, ice dam expert, ice dam removal jerks, minneapolis ice dam removal, orono ice dam removal, roof ice steaming, twin cities ice dam remover, wayzata ice dam removal
Posted in Ice Dam Prevention, Ice Dam Removal, Ice Dams, Misc., Ice Dams: General Info, Water Damage | Comments Off on 9 Common Types of Ice Dam Damage
