Professional Roof Sealing in Ontario
Apex Impressions applies professional-grade roof sealant to protect your shingles from UV degradation, moisture infiltration, and premature aging. Extend the life of your roof with a single treatment that lasts for years.
Roof Sealing Projects at a Glance
Ontario homeowners turn to Apex Impressions for roof sealing after cleaning or as a standalone maintenance treatment. Our sealant applications protect shingle granules, slow UV degradation, and reduce the rate of future organic growth. You can view examples of our work in our gallery to see the quality of finishes we deliver across the region.
5 star reviews
Consistently rated for thorough surface preparation and clean sealant application that holds up through Ontario winters.
100%
Every roof sealing job is completed with a post-application inspection and a full walkthrough confirming coverage and adhesion.
10+ Years of Industry Experience
Over a decade of exterior surface protection experience across Ontario rooftops in every shingle type and condition.
Why Ontario Roofs Benefit from Sealing
Asphalt shingles are durable, but they are not invulnerable. Every year of sun exposure degrades the bitumen layer that holds shingle granules in place. Every freeze-thaw cycle works at the micro-cracks that UV exposure creates. Every spring rainstorm carries algae spores and organic debris that settle into the granule layer and begin to grow. As we discuss in our blog, roof sealing addresses all three of these degradation factors and can extend your roof’s lifespan significantly.
Get an Expert Roof Sealing Quote
Your roof is one of the most expensive components of your home. Protecting it with a professional sealant application is one of the most cost-effective maintenance decisions you can make. Apex Impressions is a trusted provider serving Ontario homeowners across the GTA and Central Ontario, and we’ve been helping families preserve their roofs for years. Contact us for a free quote and we will assess your roof’s current condition and recommend the right treatment for your shingle type.
OUR PROCESS
We examine the full roof surface to assess shingle condition, granule retention, active growth presence, and moisture exposure history. This assessment determines whether the roof is ready for sealing or requires cleaning first, and which sealant formulation is most appropriate for your shingle type and current condition.
If the roof has any active algae, moss, or lichen growth, we treat and clean the surface before any sealant is applied. Sealing over organic growth accelerates damage rather than preventing it. We allow the cleaned surface to dry completely before proceeding to the sealant application stage.
We apply professional-grade roof sealant in a uniform low-pressure washing application across the full roof surface. The sealant is worked into the granule layer evenly, with particular attention to ridges, valleys, and edge zones where granule loss and moisture infiltration begin earliest.
After application, we inspect the full coverage area to confirm uniform adhesion and identify any sections that require a second pass. We check that no sealant has pooled at shingle seams, entered gutter cleaning channels, or run onto fascia boards. The roof is left clean and evenly coated.
We provide you with a written service record including the product applied, application date, and photographs of the completed surface. We review the expected maintenance timeline with you and make recommendations for the next cleaning or resealing interval based on your roof’s current condition and local environmental factors.
Characteristics of Professional Roof Sealing Care
Not all roof sealants are equal, and not all surfaces are ready for sealing. Professional roof sealing starts with a surface assessment that determines shingle condition, granule retention, and growth status. Sealing a roof that has active algae or moss growth traps the organic material under the sealant layer and accelerates the damage it was meant to prevent. Our process always begins with a thorough cleaning, and if you’re unsure whether your roof needs this treatment, we encourage you to contact us for a free evaluation before any work begins.
FAQ's
How long does roof sealant last on Ontario shingles?
A professionally applied roof sealant typically provides effective protection for three to five years on Ontario shingles, depending on the product formulation, shingle age, and local environmental conditions. Roofs with significant sun exposure or heavy tree coverage may require retreatment at the shorter end of that range. GoNano nanotechnology-based coatings tend to perform at the longer end of the protection window due to their deeper granule penetration.
Can I seal my roof without cleaning it first?
No. Sealing a roof that has active algae, moss, or lichen growth is counterproductive. The sealant traps the organic growth against the shingle surface, which accelerates granule loss and moisture retention rather than preventing it. Professional roof sealing always requires a clean, dry surface. Apex Impressions provides combined cleaning and sealing services, and we will not apply sealant to a roof that has not been properly prepared.
What is GoNano protective coating and how is it different from standard sealant?
GoNano protective coating uses nanotechnology-based formulation that penetrates the shingle granule layer at a microscopic level rather than sitting on the surface. This creates a more durable hydrophobic bond that sheds water more efficiently, resists UV degradation more effectively, and inhibits organic growth for longer than conventional surface-applied sealants. For Ontario homeowners whose roofs face significant thermal cycling and moisture exposure, the GoNano formulation typically extends the protection interval by one to two years compared to standard products.
Does roof sealing affect my shingle warranty?
In most cases, professional sealant application does not void shingle manufacturer warranties — and in some cases, documented maintenance including sealing can support warranty claims by demonstrating proper roof care. However, warranty terms vary by manufacturer and product line. We recommend reviewing your specific warranty documentation before scheduling a sealing treatment if warranty coverage is a concern. We can advise on compatible products for your shingle brand during the assessment visit.