The roof in winter can turn out to be the toughest for house roofs. And the freeze-thaw cycle is the major reason for it. Once the severe cooler weather passes, the homeowners start observing such changes in their roofs without thinking that the melting and constant freezing are always the actual cause. Finding out how freeze-thaw cycles damage roofs would help take necessary measures before it reaches costlier repairs.
All About Freeze-Thaw Roof Damage
When water enters damaged spaces, gaps or tiny cracks, it actually causes freeze-thaw roof damage. This creates ice through water expansion as the temperature goes below the freezing point. Similarly, the ice begins melting when the temperature increases. The protective layers of the roof turn weaker along with enlarged cracks through the same process. The roof becomes more damaged as a result of premature failure, structural damage and leaks when the cycle starts to accelerate.
Reasons of Cracking Roofs in Winter
Many of us feel why roofs crack in winter despite looking properly fine in the summer time. One can find the answer by knowing water’s physical properties. When the water freezes, you’ll see 9% water expansion. The roofing materials get higher pressure through this expansion. Each freeze thaw cycle turns the small cracks larger (which seemed to be harmless before). A constant deterioration pattern is created as the cracks widen and water enters further. This issue turned out to be more severe as a result of below freezing nighttime temperatures and above freezing daytime temperatures. Such continuous changes in temperature turn the roof to contraction and constant expansion.
Highly Affected Roof Materials
Some materials can be much weaker or more susceptible as every roofing system suffers damage in winter. As the aging shingles become less flexible with time, the impact of freezing temperatures on asphalt shingles seems to be significant. The chilled weather makes them more challenging by doubling the likelihood of breaking, curling and cracking. The water penetrates easily under the shingles once the protective granules start wearing away.
Something that leads to warping or splitting after continuous freezing are the shakes and wood shingles which also absorb moisture. In case water enters into small areas, the stale roofs and tiles can crack. If expanding ice affects fasteners or seams, the metal roofing systems would be damaged. The risk of freeze-thaw damage increases as a result of poor damage regardless of roofing material.
Indications of Freeze-Thaw Roof Damage
The homeowners schedule repairs in Richmond Hill, ON, before the occurrence of the main issue by recognizing the quick signs of freeze-thaw roof damage.
The major indications are based on:
- Ice dams forming along roof edges
- Sagging roof sections
- Granules collecting inside gutters
- Visible cracks in roofing materials
- Cracked, curled, or missing shingles
- Loose flashing around chimneys and vents
- Water stains on ceilings or attic insulation
Structural Risks for Long-Term
The surface of a roof isn’t just affected through freeze thaw damage. It develops mold growth inside the attic, turns structural support weaker and rot wooden decking as the water penetrates in depth into the roofing system. The interior finishes, electrical systems, ceiling and drywall are also damaged through persistent leaking. The full or partial roof replacement becomes necessary as a result of structural deterioration.
Prevention from Freeze Thaw Roof Damage
Find out how to prevent freeze thaw roof damage for extending roof’s lifespan while decreasing cost of repair. The practice of maintenance that must be followed are:
- Schedule roof inspections by a pro.
- Trim tree branches that are overhanging.
- Improve ventilation and attic insulation.
- Flashing around roof penetrations.
- Replace missing or damaged shingles.
- Remove debris and leaves.
- Ensure proper drainage through clean gutters
Roof Protection Before Spread of Winter Damage
The roofing materials turn weaker after every season. Try to figure out how freeze thaw cycles damage roofs which lets homeowners find problems quickly and invest before expensive repairs become required.
