Frequently Asked Questions

Roof rejuvenation is preventative maintenance treatment applied as a spray treatment applied to the asphalt shingles on your roof; designed to penetrate the shingles and replenish the oils that are lost over time due to aging and weather exposure.

For many homeowners, it can seem that when it comes to their roof there are only two options: repair or replace. Recently, however, a third option has entered the market — preventative maintenance through roof rejuvenation. 

While still unfamiliar to many homeowners, roof rejuvenation is gaining attention as a preventive maintenance strategy for asphalt shingle roofs because it addresses a specific and common cause of roof deterioration: shingle drying and oxidation.

From the ground, a roof may still look perfectly normal, which is why many homeowners are surprised to learn that shingles can begin drying out long before obvious problems appear.

 As asphalt shingles age, the oils that maintain their flexibility and performance begin to evaporate, leading to problems over time. Roof Rejuvenate applies an all-natural, bio-based solution that restores these shingles by applying a plant-based solution that replenishes lost oils and revitalizes their performance. With just one treatment, we can offer property owners a guaranteed way to save thousands of dollars compared to replacement.

Roof Rejuvenation Treatment Benefits:

• restores lost oils due to aging

• slows aging caused by UV and oxidization

• improves flexibility and durability

• improves granule retention

• improves waterproofing capabilities

• improves shingle seal tab adhesion 

• reduces damage caused by wind and hail

• improves fire resistance

• enhances shingle colour

• kills moss and hinders re-growth

• keeps shingles out of landfills

 We apply a premium, environmentally friendly, corn-based bio-oil formulated to condition and restore flexibility while supporting/maintaining the integrity of the shingle

Our roof rejuvenation treatment from Roof Rejuvenate Canada, is developed by Colorbiotics, a Sika company. 

Sika is a global manufacturer of construction chemicals that bond, seal, protect, and extend the life of buildings. Founded in Switzerland in 1910, and operating in 100 plus countries globally.

They are one of the most trusted material science companies in the construction industry and considered a world leader in roofing and waterproofing systems designed to withstand extreme weather conditions.

Roofs that are suitable for rejuvenation are generally:

• 5 plus years of age

Once a roof is about 5 years old, natural weathering starts to dry out the shingles. This is the perfect time to make preventative maintenance a part of your strategy.

• Aging but functional shingles 

Shingles that are drying out, losing flexibility or showing signs of early wear – this is the optimal stage for rejuvenation 

• Granule loss beginning or moderate

Some granule loss is normal over time and does not disqualify the roof. Rejuvenation helps slow further loss.

• No widespread active leaks

Roof systems performing as intended, even if minor repair or maintenance items are present.

Roof systems exhibiting widespread deterioration, substantial shingle loss, or active water intrusion, are generally not suitable for rejuvenation and may require repair or replacement.

When applied at the appropriate stage in a roof’s life, and combined with minor maintenance or repairs where needed, roof rejuvenation may extend the expected service life of your roof by up to 15 years.

Roof rejuvenation allows homeowners to address aging proactively rather than reacting to failure and help save thousands of dollars by preventing roof damage and delaying the need for replacement; giving homeowners the ability to budget and plan for replacement on their timeline 

Over time, exposure to sun, heat and Ontario’s freeze-thaw cycles causes the essential oils within asphalt shingles to gradually dissipate.

Asphalt shingles are the first and most critical line of defense on a roofing system. They act as a protective barrier that sheds water, blocks UV rays, and shields the underlying components—like the underlayment, decking, and structural elements—from exposure to the elements. When shingles are in good condition, they direct water safely off the roof and help maintain the integrity of the entire system.

When shingles begin to fail, that protection is compromised. Water can start to penetrate beneath the surface, reaching the underlayment and eventually the roof deck. This can lead to rot, mold, insulation damage, and even structural issues if left unaddressed. Missing granules and loss of flexibility also make shingles more vulnerable to wind damage, increasing the risk of blow-offs and exposed areas. Once the outer layer is no longer doing its job, the rest of the roofing system is forced to absorb stress it wasn’t designed to handle—often resulting in more costly repairs or full replacement much sooner than expected.

This stage often occurs years before visible leaks develop, even if the roof appears intact from the ground.

Roof rejuvenation is applied as a liquid spray that penetrates the shingle surface within minutes, replenishing the oils that asphalt shingles naturally lost over time.

The process is:

• Non-invasive spray application

• Minimal disruption to residents

• Typically completed in 1–2 hours

• No tear-offs or construction debris

• Low noise procedure

• Treatment penetrates shingles within minutes

 As part of the treatment, we’ll inspect the condition of your shingles, sealing, and flashing and complete minor roof maintenance as required prior to treatment. This may include resealing roof penetrations and flashing, sealing exposed fasteners, addressing minor nail pops, and securing loose shingles. 

If any significant repairs are identified that fall outside the included minor maintenance, they will be quoted separately and completed only once authorized.

 A proper inspection evaluates real conditions, and understanding the condition of the roof allows homeowners to ask better questions, compare options realistically, and choose the solution that best fits their home and budget. 

In some cases, an inspection may reveal that rejuvenation is not the best option, and that repair or replacement would be more appropriate.

Like many home maintenance decisions, the right solution depends on the condition of the roof and the homeowner’s long-term plans for the property.

  Phone • Text • Email • Facebook • Website Contact Form

STEP 1 QUICK FREE VIRTUAL QUOTE 

YOU : Provide your property address and contact information; and any details about your roof’s age or condition. Photos are also welcome and can help us get started. 

US: We’ll review your information and send you a preliminary estimate.

STEP 2: ON SITE INSPECTION

YOU: If you are interested in taking the next step, simply reply to the preliminary estimate and we will arrange an on-site inspection at your convenience.

US: During the inspection we will review your measurements, confirm that your roof qualifies for treatment and the 5-year transferable warranty, and answer any questions you may have about the product and treatment process.

As part of the treatment, we’ll inspect the condition of your shingles, sealing, and flashing and complete minor roof maintenance as required prior to treatment. This may include resealing roof penetrations and flashing, sealing exposed fasteners, addressing minor nail pops, and securing loose shingles. 

If any significant repairs are identified that fall outside the included minor maintenance, they will be quoted separately and completed only once authorized.

STEP 3: SCHEDULE YOUR TREATMENT 

US: AFTER INSPECTION WE WILL EMAIL YOU A FORMAL QUOTE VIA QUICKBOOKS FOR YOU TO REVIEW AND APPROVE 

YOU: Approve the quote and let us know when you would like to schedule the work. 

US: We’ll schedule your treatment for your preferred time, with most applications and any necessary repairs completed within 1–2 hours.

A Bio-Based Approach That Works With Your Roof 

Our treatment is made from over 95% bio-based ingredients, using refined corn-derived oils designed specifically for outdoor performance.

This matters because your roof isn’t just any surface—it’s constantly exposed to:

• UV radiation

• Heat and temperature swings

• Rain, snow, and freeze-thaw cycles

A product designed for these conditions needs to be stable, predictable, and compatible with the shingle itself.

Conditioning vs. Breaking Down

One of the most important differences in roof treatments comes down to how they interact with your shingles.

Some products rely on methyl ester-based formulations, which are designed to penetrate quickly. While that may sound beneficial, faster penetration can sometimes mean the product is too aggressive, potentially disrupting the internal structure of the shingle.

Our product is a conditioning agent. Not a coating that alters the structure. 

• It conditions the shingle rather than dissolving it

• It helps restore flexibility without over-softening

• It works with the material instead of breaking down its chemical bonds

The goal is simple: support the integrity of the shingle—not interfere with it.

Built for Long-Term Stability

Corn-based formulations offer several advantages when it comes to durability outdoors:

• Greater oxidation stability – resists breaking down over time

• Improved UV resistance – holds up better under constant sun exposure

• More stable under heat – less prone to rapid chemical change

In practical terms, this means the treatment remains effective longer, rather than degrading prematurely under harsh roof conditions.

Safer for Your Home and Environment

What’s not in a product is just as important as what is...

Our formulation uses ingredients listed on both the DSL (Canada) and TSCA (US) inventories, carefully selected to avoid PFAS and aggressive or unnecessary chemical additives.

Our treatment is:

• Free from toxic chemicals

• Free from PFAS (“forever chemicals”), which do not break down in the environment

• Designed to be environmentally responsible, including for properties with water collection systems 

For homeowners, this provides peace of mind that the solution applied to their roof isn’t introducing unnecessary risks.

Backed by Proven Science

Our roof rejuvenation treatment from Roof Rejuvenate Canada, is developed by Colorbiotics, a Sika company. 

Sika is a global manufacturer of construction chemicals that bond, seal, protect, and extend the life of buildings. Founded in Switzerland in 1910, and operating in 100 plus countries globally; and they are one of the most trusted material science companies in the construction industry and considered a world leader in roofing and waterproofing systems designed to withstand extreme weather conditions

Roof rejuvenation is not a surface coating or sealant—it’s a penetrating treatment designed to work within the shingle, not on top of it. Unlike coatings that create a visible layer or alter the texture, this product absorbs into the asphalt and replenishes the oils that have been lost over time. The shingles maintain their original structure, profile, and granule integrity, with no added film, buildup, or change in how the roof sheds water. 

The only noticeable difference is a slightly richer, deeper colour, as the restored oils enhance the natural appearance of the shingles. 

Because it doesn’t modify the surface or create a barrier, the roof continues to function as it was designed—just with restored flexibility and performance.

What’s not in a product is just as important as what is.

Our formulation uses ingredients listed on both the DSL (Canada) and TSCA (US) inventories, carefully selected to avoid PFAS and aggressive or unnecessary chemical additives.

Our treatment is:

• All natural food grade product

• Free from toxic chemicals

• Free from PFAS (“forever chemicals”), which do not break down in the environment

• Designed to be environmentally responsible, including for properties with water collection systems 

For homeowners, this provides peace of mind that the solution applied to their roof isn’t introducing unnecessary risks.

Our roof rejuvenation treatment from Roof Rejuvenate Canada, is developed by Colorbiotics, a Sika company; and uses a corn-based-bio-oil developed to replenish each shingle without the use of harsh chemicals. The product is environmentally friendly and safe for landscaping, pets, and surrounding surfaces. 

Sika is a global manufacturer of construction chemicals that bond, seal, protect, and extend the life of buildings. Founded in Switzerland in 1910, and operating in 100 plus countries globally; they are one of the most trusted material science companies in the construction industry and considered a world leader in roofing and waterproofing systems designed to withstand extreme weather conditions 

YES! Roof rejuvenation address common organic growth problems like moss and algae: those black stains on your roof aren't dirt, they are cyanobacteria and they are alive.

As singles age, conditions are created where shingles lose their oils and retain water where the oils should be; allowing moss and algae to grow.

As shingles dry out:

• They lose oils and become less water-shedding and more absorbent

• Become more porous and lose their ability to shed water effectively,

• This slows down how quickly they dry after rain, allowing moisture to sit longer on the surface creating conditions that encourages moss and algae growth.

Roof rejuvenation helps interrupt this cycle in two ways.

First, by restoring oils to the shingle, it improves how the surface sheds water, so it dries faster and becomes less hospitable to growth. 

Second, the treatment penetrates into the shingle and into the root-like structures of moss and algae, loosening their grip and disrupting their ability to survive. 

As a result, existing growth breaks down over time, and the conditions that allow new growth to establish are removed; all without the need for harsh pressure washing or damaging surface treatments.

Asphalt shingle roofs typically represent one of the largest exterior investments homeowners make, which is why maintenance strategies are receiving more attention.

Maintaining the roof you already have, can often be one of the most cost-effective ways to protect the value of your home.

While roof rejuvenation is not a permanent alternative to replacement, when applied at the right time it can potentially provide many additional years of service life for an asphalt shingle roof.

Roof rejuvenation allows homeowners to address aging proactively rather than reacting to failure and help save thousands of dollars by preventing roof damage and delaying the need for replacement; giving homeowners the ability to budget and plan for replacement on their timeline.

For homeowners unsure about the condition of their roof, a professional inspection can help determine whether rejuvenation, repair, or replacement is the most appropriate next step.

Homeowners interested in receiving a quote or roof inspection, can contact us to receive a virtual estimate using aerial measurement tools or schedule us for an on site visit.

Roof rejuvenation can be applied throughout most of the roofing season as long as the temperature is above 5 degrees celsius.

While it is best to avoid treatment right before or after heavy rains, the product is designed to quickly penetrate the top layer of the shingle, and in about 1 hour is absorbed; so there is no need for concern about it being washed away.

WHEN IS THE BEST TIME TO REJUVENATE MY ROOF?

RIGHT NOW is the time to give your roof the attention it deserves. The best time to rejuvenate your roof is while your shingles are still in good condition. If your roof qualifies, NOW is the time to act. Don’t put off maintenance until further deterioration turns into costly problems and limits your options. 

Protecting your home starts with smart, proactive maintenance. Taking care of your roof before problems develop is a responsible way to protect your investment and get more life from what you already own. 

Schedule your roof inspection while weather conditions are suitable for treatment, and find out whether roof rejuvenation can help preserve your shingles before winter.

Can roof rejuvenation be applied in any weather?.. Is one of the most common questions homeowners ask. 

Do weather conditions affect roof rejuvenation? Weather does play a role, but the good news is that roof rejuvenation can be performed successfully in a wide range of conditions.

A lot of homeowners assume the treatment must be applied during the hottest days of summer. In reality, roof rejuvenation can be successfully performed throughout much of the year, as long as the roof is in suitable condition and the weather forecast is favourable.

General Temperature Guidelines for Roof Rejuvenation

Roof rejuvenation is typically applied within a practical working range that allows the treatment to properly penetrate the shingles.

Recommended Temperature Range:

• Minimum temperature: Approximately 5°C (41°F) 

• Ideal temperature range: 10°C to 30°C (50°F to 86°F)

Does Hot Weather Improve Roof Rejuvenation Results? 

A lot of people think it needs to be hot for roof rejuvenation application, but that’s not actually the case. This is a good question—and honestly, it’s one of those “feels logical but isn’t fully true” situations.

Short answer: warmer weather helps a bit, but it’s not a requirement—and waiting isn’t necessary. Because the product is a water-based bio-oil, it doesn’t rely on extreme heat to function. Instead, it’s designed to work in typical outdoor conditions.

During hotter days:

• Shingles are naturally more flexible

• Absorption may occur somewhat faster

• The product may spread more easily across the roof surface

These are minor advantages and do not significantly change the overall effectiveness of the treatment.

What About Cooler Conditions?

Spring or fall conditions:

• The treatment still absorbs properly

• The conditioning process may take a little longer

• The end result remains the same

Think of roof rejuvenation not as a product that depends on heat to work, but as a treatment designed to perform under a variety of weather conditions. While temperature and humidity can influence how quickly the water-based carrier evaporates, the rejuvenating oils themselves are formulated to penetrate and condition the shingles under a wide variety of conditions. 

Can Roof Rejuvenation Be Done in Spring or Fall?

Absolutely... In Ontario communities such as Niagara, Haldimand, Hamilton, and Norfolk County, spring and fall provide excellent conditions for roof rejuvenation.

Even in moderate temperatures:

• The treatment still penetrates the shingles properly

• The conditioning process continues over time

• The final results of the treatment are the same

Does Humidity Matter?

Humidity can influence how quickly the water-based carrier evaporates, but by itself it is not a significant factor in determining whether roof rejuvenation can be performed. Roof rejuvenation can be applied successfully in a wide range of humidity levels.

Does Wind Affect Roof Rejuvenation Applications?

Unlike thin, highly atomized sprays that can drift easily, roof rejuvenation is applied as a heavier, denser spray pattern made up of larger droplets. This allows the product to transfer directly onto the roof surface with minimal airborne mist.

Because the treatment is a water-based emulsion of plant-derived bio-oils, it has more body and weight than many conventional spray products. This helps the material stay on target and reduces the likelihood of overspray. 

As with any exterior application, wind is still monitored closely. If wind conditions become excessive, adjustments can be made to the spray pressure, nozzle selection, and application timing to maintain precise coverage.

What Happens If It Rains After Roof Rejuvenation?

This is one of the most common concerns homeowners have.

Roof Rejuvenation Niagara, authorized supplier of Roof Rejuvenation Canadas, roof rejuvenation product, begins penetrating the shingle within minutes of application. Once it has had adequate time to absorb, normal rainfall will not wash it away.

If heavy rainfall is expected soon after application, the treatment may not have enough time to fully penetrate the shingles. That is why weather conditions are carefully monitored before every job.

How the Product Handles Moisture

Unlike solvent-based products, the treatment used by Roof Rejuvenate Niagara is a water-based emulsion of plant-derived bio-oils. This means that our product does not require a perfectly dry surface in the same way some solvent-based systems do. 

Light surface dampness generally does not interfere with performance and can even help the product spread more evenly across the shingles.

In other words, the treatment is designed to work with your roof—not fight against a little moisture. The most important factor is that the roof should not be saturated with water or exposed to heavy rainfall too soon after the application.

Do You Need to Wait Until Summer for Roof Rejuvenation?

No, you don’t need to wait for the hottest part of summer to schedule roof rejuvenation. Delaying treatment simply allows your roof to continue aging and drying out in the meantime.

Applying roof rejuvenation in spring or early fall helps restore and condition the shingles before they are subjected to the additional stresses of summer heat or winter freeze-thaw cycles.

If your asphalt shingles are showing signs of aging, there is no reason to delay your application. When it comes to roof rejuvenation, early treatment offers the best opportunity to maintain and protect the most important part of your home –your roof.

Immediately after application, the water-based carrier helps transport the bio-oils into the shingles and within minutes the solution begins to soak into the top layer of the shingle, and you will notice that the roof will appear darker and richer in colour. 

Over the next few hours, most of the roof rejuvenation treatment is absorbed into the shingle and ready to penetrate the deeper layers of the shingles. 

Over the next few days, the water-based carrier gradually evaporates and leaves the bio-oils to remain behind and continue penetrating the shingles allowing the shingles to become more flexible and less dry and brittle.

Over the next few weeks, the conditioning treatment continues to absorb as the asphalt shingles expand and contract through normal daily heating and cooling cycles. 

Natural temperature cycles help the bio-based oils move through the shingles, allowing the treatment to gradually migrate and penetrate deep into the shingle layers as the roof responds to everyday conditions.

At this stage, the shingles will continue to condition and gradually relax, helping reduce curling and allowing them to lie flatter over time. Shingles that lie flatter are better able to shed water properly and are less exposed to wind uplift, which improves the roof’s overall performance restoring waterproofing capability, shingle tab re-sealing, and shingle loss from wind uplift. 

Shingles will retain less moisture, and remove cosmetic issues such as dark staining from algae, and moss as the treatments work by suffocating the existing growth. Remaining moss will die gradually and naturally wash away through rain, wind, and normal weather exposure. 

Product Warranty 

Roof rejuvenation treatments include a 5 year transferable warranty for qualifying roofs.

This warranty covers the performance of the rejuvenation treatment, including the continued performance of the shingles as intended by the manufacturer.

The warranty does not replace the original roofing warranty and should be considered a maintenance warranty, not a structural roofing warranty.

Typical Warranty Conditions

For warranty eligibility, the roof must generally meet certain criteria at the time of application, including:

• shingles must be structurally sound

• roof decking must be intact

• no active leaks present

• proper ventilation in place

Contractor Guarantee

Our contractor warranty guarantees the application workmanship and will match the manufacturers product warranty by covering associated labour costs in the event of a warranty claim.

As part of the evaluation process, we recommend reviewing the original roofing warranty and confirming that rejuvenation is appropriate for the roof’s current condition. 

 • Because rejuvenation products aren’t yet certified in Canada by regulatory bodies (like CCMC or ULC), insurers do not count them as an official “roofing upgrade.”

• If a rejuvenated roof leaks or fails, the insurer will still treat the roof as its original age/condition, not as “newer” or “extended.”

• Warranties on rejuvenation products are separate from your insurance policy. That warranty is between the homeowner and the applicator/product company, not the insurer.

Roof rejuvenation is considered a preventative maintenance treatment, not a roofing replacement or structural repair.

The application process typically:

• does not involve tear-offs or structural work

• does not involve open flame or hot-work roofing methods

• produces minimal construction debris

For this reason, roof rejuvenation is classified as a maintenance treatment, rather than a construction service. If needed we can provide details to help with any insurance related questions or submissions.

Roof Rejuvenate Niagara maintains a 5 million commercial general liability insurance policy, and valid WSIB clearance certificates, and complies with applicable safety practices when accessing roofs.