The vast majority of people use their roof as background music, as it is always present, sometimes one thinks of it during a downpour, and nearly never gives it a glance until something goes awry. Such an attitude costs a lot. sarniaroofers.ca has received too many emergency calls to hear homeowners approach the door standing in wet socks at seven in the morning to know how that tale is told, and the sad part is nearly always the same: the damage was not done in a single night. It was constructed with each passing season, then the next, beginning small, as a broken flashing seal, a couple of lifted tabs in the ridge, a seam in the membrane, which opened ajar enough to allow moisture to creep inside during the freeze cycles. The climate of Sarnia is not an inactive setting of these failures. The Lake Huron weather systems are a real sustained punishment delivered by late fall and winter and a roofing system that makes the journey into the season still without all its weak areas resolved is literally playing the game of a clock at least one of which is running in a single direction.
Metal roofing has well established itself as the long-term player of choice of property owners in this part of the world and the discussion on it has long ago outgrown the sticker-price sticker shock already and is now more based on real-number lifetime value. Standing seam steel and aluminum systems have known service lives of 50 years at the lowest end, and the highest quality aluminum systems in a similar Great Lakes climate have been running with only basic maintenance and well past that. The freeze-thaw performance difference between metal and asphalt is dramatic metal takes in zero moisture in its surface structure, which implies that the expansion-contraction damage cycle that increasingly damages shingle systems with Sarnia winters cannot take place at all. The ice damming, which is a frequent and expensive issue with asphalt roofs across southwestern Ontario, will no longer have sufficient bite due to the ongoing metal panels since the meltwater has no surface of grains that it can pool against and then refreeze at an eave. Reflective finishes on lighter metal profiles cut summer cooling loads demonstrably as well, which is also a good point of energy performance on top of the already high durability argument.
Slope roofing has to deal with residential work and the choices that are made about the product have a greater impact than most of the homeowners think when they are comparing quotes at the kitchen table. Three-tab shingles have been extensively phased out of serious re-roof discussions in favour of architectural grades that are more wind resistant, have more dimensional profiles, and have manufacturer warranties that are adjusted nearer to actual performance than to the theoretically optimum performance under laboratory conditions. Impact-resistant shingle models have also gained consistent interest with residential clients with mature tree canopy overage or otherwise exposed areas that receive hail during spring convective storms – the incremental surface hardness has been recouped in a relatively short period in terms of missed repair calls due to weather conditions. The variable is always underweighted in slope roofing decisions, but this implication of ventilation on the life of the shingles is direct and worked with serious consequences: an attic that becomes a heat-trap and a humidity-trap in the summer months loss shingles away at an accelerated rate, years off a product that was sold on the promise of 30 years of service.
Flat roofs require a completely different set of skills than slope roofs, and the contractors who are willing to consider it an easy continuation of their shingle business will install roofs that show that attitude in a matter of years. TPO membrane prevails in commercial flat constructions in Sarnia due to its heat-welded seams, which stay clean when subjected to seasonal thermal movement, and white reflective surface, which resists UV radiation exposure without any serious deterioration throughout the warranty term. EPDM rubber still is a good option on residential flat areas such as garage roofs, low-slope extensions, covered entries where cold-temperature flexibility provides it with a mechanical edge due to hard freeze and thaw cycles. Adjusted bitumen is used on rooftops where there is frequent foot traffic or mechanical equipment is installed, and puncture resistance is important in addition to weather performance. All these systems cannot out-run poor drainage planning – ponding water is the usual enemy of all flat membrane types, and getting slope-to-drain geometry right before starting the roofing installation is the judgment that will distinguish between flat roofs that live long and those that prompt complaints.
There should be inspections at least twice per year in the calendar. The spring takes that which was left by winter. Fall picks up what summer had dried and snapped before the winter.