Most property owners do not know that extreme weather may shorten the lifespan of their commercial roof by up to 40 percent if they do not properly maintain it. In Star, Idaho, where we experience seasonal swings from snowy winters to blazing hot summers, a commercial roof is quietly working through it all. Each hailstorm, wind gust, or long period of hot weather denotes a ticking time bomb, where deterioration occurs and property owners do not realize what is happening to the roof.
While manufacturers may claim a lifespan of 20–30 years for their roofing systems, these numbers should be put into context. The numbers do not represent how long it will truly last, but how long the roof may last under ideal conditions.
In this blog, we will cover the environmental conditions, what we, as commercial roofers in Star, observe with weather-beaten buildings, and what you can do to improve the life of your roof.
1. Freeze-Thaw Cycles: The Silent Killer
The freeze-thaw cycle is one of the most destructive, especially early in the year when the weather is transitioning between cold and warm. During the day, temperatures may rise above freezing, and the snow that has been building up on the roof will melt. During the night, the temperatures will plummet and refreeze the water, which then expands in cracks or under membrane layers.
Climate-related shrinkage and expansion result in micro-tearing of many roofing materials and loosening of flashing, ultimately leading to the infiltration of moisture with more location-specific variables. Any water that is allowed into the insulation or decking will speed the rotting process and establishment of mold, thus reducing the effective lifespan of the roof.
2. Summertime UV Exposure: Assessing Slow Burn Damage
While winter can be dramatic, the slow burn of summertime UV exposure can be just as damaging, especially in high altitudes or on open-sky terrains such as Star. Prolonged exposure to the sun dries out roofing membranes, blisters them, and weakens the chemical adhesives that secure roofing systems.
Flat commercial roofing in Star with poor drainage is even more vulnerable. In direct sunlight, ponding water can superheat and worsen damage. Left unaddressed, the long exposure deteriorates elasticity, causing the roof to become brittle and crack easily. That’s why contractors with experience recommend reflective coatings or materials with UV protection to offset some of this damage.
3. Wind Events and Uplift
In Star, the wind can be aggressive, especially with the changing of the seasons. Even if you don’t live through an event like a tornado, consistent gusts and high winds over time can fester inside the roof structure. Poorly installed systems, or systems that are aging, can particularly succumb to these elements.
The leading edge of your commercial roof will most often be the most affected area; the uplift forces can loosen panels, peel membranes, or even detach flashing. After the top layer is compromised, any interior layers are now exposed to water and continued wind damage, causing deterioration to spread.
4. Heavy Rain and Drainage Problems
Star won’t experience tropical storms, but heavy rain events are surely an issue, particularly in springtime. The danger lies not only in the weight but more in the roof handling the weight. Flat or low-slope commercial roof maintenance in Star requires very deliberate drainage systems to evacuate the water from the roof.
Ice dams, blocked scuppers, clogged internal drains, or improperly designed slopes can all create ponding water: the worst possible scenario for roofing membranes. It creates weight, algae, and affects the integrity of all roofing materials on a molecular level, specifically seams and junction areas.
These conditions will create a variety of issues over time, which typically culminate in bubbling, surface deterioration, and slow leaks, which go undetected until the damage is far more significant.
5. Snow Load and Ice Dams
Winter in Star has its own set of challenges for roofing. In addition to the freeze-thaw cycles mentioned earlier, the amounts of snow on the roof, along with the subsequent formation of ice dams, create both physical and structural loading on the commercial roof. Snow may look fluffy and light, but greater amounts create great weight overall.
Flat roofs or low-slope systems take on considerable weight from the snow due to the inability to shed it efficiently. When the snow melts near the edges of the roof and refreezes, ice dams form and block proper drainage, causing water to back up below the membrane and shingles. This leads to several problems in the interior, including leaks, saturated insulation, and, in the most extreme case, total roof collapse.
6. Hail Damage: Sudden, Severe, and Expensive
Hail is not a common threat, but it is a reality in the Star area, particularly in late spring and early fall. Hail can pierce membranes, break skylights, destroy flashing, and leave its indelible mark on roofing materials by creating dimples or cracks, which affect waterproofing.
The main obstacle with hail is that, in some cases, damage is not apparent right away. While there are big holes your eyes can’t miss, smaller cracks could take months to present leaks, and at that point, damage has worked its way through the roof and most likely spread.
7. Year-Round Weather Variability = Accelerated Aging
What makes Star’s weather particularly troublesome for commercial roofs is not a single extreme but consistent variability. Rapidly changing from hot to cold, wet to dry, and calm to windy places constantly stresses roofing systems.
Each change tests the seams, fasteners, coatings, and substrates, increasing the aging process, even in roofs that were installed correctly. Property owners who are reactive with maintenance only notice these changes when a leak shows up or a major component fails.
Summary: Without Weather, There is No Stress Test for Commercial Roofs
Your commercial roof in Star is more than just part of your building; it is your 24/7 guardian against sometimes harsh and always shifting weather. Your roof is pitted against all sorts of regional and seasonal weather patterns that gradually harm it, such as UV rays, and more severe localized threats like hail and snow.
First, you have to know the localized threats. Then, you have to act upon them. You should ideally conduct regular inspections, regular preventative maintenance, and timely repairs for your commercial flat roof to have the best chance of getting the expected lifespan of your roof or better.
Bork Roofing is a locally owned and operated roofing company in Star that proudly serves Star, Idaho, and surrounding communities. Their specialty is in the area of commercial roofing contracting, using decades of experience, understanding the climate in Star, and providing long-lasting, weathertight roofing assemblies.
Whether you need an emergency repair for a leaking roof or are considering a full roof replacement, you can be sure that the Bork Roofing employees are certified, licensed, and insured contractors who take pride in their work and the roofing materials they install. Whether you own a commercial flat roof, a metal roof with panels, or a single-ply membrane, contact us to protect your investment from everything Idaho’s sky can throw at it.