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Roof Cleaning

The Layered Approach: Demystifying Roofing Over an Existing Roof

roofing over existing roof
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When it’s time to replace your roof, homeowners often face a critical decision: remove the existing layer or opt for a roof-over. Roofing over a current top involves adding a new layer of shingles on your existing one, a decision influenced by several factors such as the roof’s condition, the type of roofing material, and the roof structure itself. This article dives deep into this roofing approach, exploring its benefits, drawbacks, and key considerations.

The Decision: Roofing Over an Existing Roof

To roof over an existing roof means installing a new layer of shingles over the old shingles.This approach can be appealing due to potential cost and time savings and the additional protection on your roof that the extra layer can provide. However, like all construction decisions, it’s not without its pros and cons. Nonetheless, it’s important to note that this construction decision, like all others, has its advantages and drawbacks. Careful consideration of factors like existing roof conditions, weight capacity, and local building codes is vital before proceeding with this method.

roof over existing roof

Evaluating the Current State: Condition of Your Roof and Roofing Inspection

Condition of your roof and roofing inspection

Before deciding to install a roof over an existing one, the condition of your current roof must be assessed. This evaluation should look for signs of damage, such as buckling shingles, leaks, or damaged flashing.A thorough roofing inspection by a professional can provide an accurate assessment and advise if a roof-over is a suitable choice or if a full roof replacement, involving the removal of the existing layer, is necessary. However, if the inspection reveals significant issues such as extensive water damage or weakened structural supports, the professional may recommend a full roof replacement, which would require the removal of the existing layer to ensure a durable and safe solution.

Material Matters: Type of Roofing Material and Types of Roofs

The type of roofing material is vital in deciding to roof over an existing roof. Typically, asphalt shingle roofs are well-suited for a roof-over. However, when it comes to other types of roofing systems, such as tile or wood, the weight, and structure of the existing shingle roof may not be conducive to an additional layer. Furthermore, not all shingles are created equal, and the compatibility of the current layer with the new shingles should be considered.

Weighing it Up: Roof Structure and Roof Layer

Your roof structure’s load-bearing capacity is another critical aspect. Installing a roof over an existing one adds extra weight. If the roof structure cannot bear this additional load, it could lead to structural problems.

Moreover, an additional roof layer may conceal potential issues with the existing shingles or underlayment. This could allow small problems to develop into more significant ones over time, leading to more costly repairs.

Implementing the Plan: Roof Installation and Roof Repair

Once you’ve weighed the pros and cons, and have decided to proceed with a roof-over, the process of roof installation begins. The existing shingle roof is prepared to receive the new layer, which may involve minor roof repair to ensure the new shingles lay flat and secure.

Professional roofers experienced in roof-overs are indispensable at this stage. They can ensure the new layer is installed correctly, preventing potential problems and ensuring the longevity of your new roof. Their attention to detail guarantees the correct installation of the new layer, ultimately safeguarding the longevity and durability of your brand-new roof.

Roof installation and roof repair

Long-Term Investment: Roof Needs and Future Care

With the new roof installed, the focus turns to maintenance. When needed, regular inspections and prompt roof repair can prolong your roof’s lifespan and keep it in good condition. The roof-over approach does not exempt you from caring for your roof needs; it simply provides an additional layer of protection.

Add New Roof Shingles Over Old?

Adding new roof shingles over old ones, also known as a “roof overlay” or “re-roofing,” can be a convenient option in some cases. It saves the labour and cost of completely removing the existing shingles. However, this approach has considerations. The added layer might not allow for proper inspection and addressing of underlying issues like rot or damage. Moreover, the additional weight could strain the roof structure. Building codes often limit the number of layers. While quicker and more cost-effective initially, it’s crucial to consult a roofing professional to determine if this method is suitable for your specific roof condition and local regulations.

Concluding Thoughts: Is Roofing Over an Existing Roof Right for You?

In conclusion, roofing over an existing roof can be a practical and cost-effective solution for many homeowners. Yet, it’s crucial to consider all the factors involved, such as the condition of the existing roof, the type of roofing material, the capacity of the roof structure, and potential future repair needs. A well-informed decision, coupled with professional advice, can ensure that you enjoy the benefits of your new roof for many years. Remember, your roof is a crucial barrier against the elements, and its care and maintenance should never be compromised.

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Exterior Cleaning Roof & Siding, Johnson, Iowa

Amazing! I had the roof, siding and soffit cleaned on my 14 year old home. I can’t believe the difference it made! It looks new again! Sullivan was great to work with. There was absolutely no trace they had been there, other than the clean house and roof! I am very pleased. I will refer my friends and family to Sullivan Roof Cleaning!

Jen Goemann, Johnson, Iowa

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Siding and Deck Cleaning, Johnson, Iowa

I found Bruce and Maria via their Your Tube video demonstrating their approach to cleaning the “green” stuff growing on the north and east sides of my home. I recommend watching it, it’s exactly who they are and what they do.

My house, deck and patio look brand new! I wish I had taken before pictures. The improvement is dramatic.

They arrived as scheduled, worked efficiently and with respect for my property. The work was completed for exactly the bid they provided when they visited my home to provide a free quote. I wish all contractors were so reliable and transparent. I am a very satisfied customer.

Annette DeFrancisco, Johnson, Iowa

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Cleaning Product Works-Des Moines

Bruce has done several roof cleanings for me and the results always exceed my expectations. He’s saved me thousands of dollars on my investment properties by making old roofs look brand new. He cleaned my gutters and siding in just a few minutes in what would have taken me hours with a power washer. With just a simple rinse, his cleaning solution removed dirt and grime that a pressure washer couldn’t remove. He’s got an amazing product.

Adam Lewis, Des Moines

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Roof & Deck Cleaning-Ames, Iowa

Our roof and deck area look better than new and Bruce and Maria are responsible for this transformation. I am so pleased to have hired Sullivan Roof Cleaning. They were friendly, courteous, and experienced and delivered excellent results.

Marie McCuskey, Ames, Iowa

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Roof & Deck Cleaning-Ames, Iowa

Our roof and deck area look better than new and Bruce and Maria are responsible for this transformation. I am so pleased to have hired Sullivan Roof Cleaning. They were friendly, courteous, and experienced and delivered excellent results.

Marie McCuskey, Ames, Iowa

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Roof Cleaning-Pleasant Hill, Iowa

I was skeptical of this when my wife suggested it. I told her roofs were suppose to do this after time. I went to Menards to purchase a product and tried it in a small area ( no results) we went ahead and had it done and our roof looks like the day we had it installed. This is the best money we have spent to keep the house looking like the day we built it. GREAT JOB!!! I would recommend this to anyone.

Jeff Backous, Pleasant Hill, Iowa

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Deck Cleaning-Granger, Iowa

You did an awesome job on my daughter’s log home, deck, railing, swing and chairs on the deck. They are totally impressed. My roof looks great, as well as, the stucco on front of my house. I appreciated your professionalism regarding communication and being where you said you would be at the time agreed upon.

Joan Clary, Granger, IA 09/15/2015

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Bruce Sullivan has over 50 years of experience in maintaining, cleaning, and restoring cedar shake roofs. Making him one of the top authorities on cedar shake roofs in the US.

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Testimonials

Exterior Cleaning Roof & Siding, Johnson, Iowa

Amazing! I had the roof, siding and soffit cleaned on my 14 year old home. I can’t believe the difference it made! It looks new again! Sullivan was great to work with. There was absolutely no trace they had been there, other than the clean house and roof! I am very pleased. I will refer my friends and family to Sullivan Roof Cleaning!

Jen Goemann, Johnson, Iowa

img-25

Siding and Deck Cleaning, Johnson, Iowa

I found Bruce and Maria via their Your Tube video demonstrating their approach to cleaning the “green” stuff growing on the north and east sides of my home. I recommend watching it, it’s exactly who they are and what they do.

My house, deck and patio look brand new! I wish I had taken before pictures. The improvement is dramatic.

They arrived as scheduled, worked efficiently and with respect for my property. The work was completed for exactly the bid they provided when they visited my home to provide a free quote. I wish all contractors were so reliable and transparent. I am a very satisfied customer.

Annette DeFrancisco, Johnson, Iowa

img-26

Cleaning Product Works-Des Moines

Bruce has done several roof cleanings for me and the results always exceed my expectations. He’s saved me thousands of dollars on my investment properties by making old roofs look brand new. He cleaned my gutters and siding in just a few minutes in what would have taken me hours with a power washer. With just a simple rinse, his cleaning solution removed dirt and grime that a pressure washer couldn’t remove. He’s got an amazing product.

 

Adam Lewis, Des Moines

img-27

Roof & Deck Cleaning-Ames, Iowa

Our roof and deck area look better than new and Bruce and Maria are responsible for this transformation. I am so pleased to have hired Sullivan Roof Cleaning. They were friendly, courteous, and experienced and delivered excellent results.

Marie McCuskey, Ames, Iowa

img-28

Roof & Deck Cleaning-Ames, Iowa

Our roof and deck area look better than new and Bruce and Maria are responsible for this transformation. I am so pleased to have hired Sullivan Roof Cleaning. They were friendly, courteous, and experienced and delivered excellent results.

Marie McCuskey, Ames, Iowa

img-29

Roof Cleaning-Pleasant Hill, Iowa

I was skeptical of this when my wife suggested it. I told her roofs were suppose to do this after time. I went to Menards to purchase a product and tried it in a small area ( no results) we went ahead and had it done and our roof looks like the day we had it installed. This is the best money we have spent to keep the house looking like the day we built it. GREAT JOB!!! I would recommend this to anyone.

Jeff Backous, Pleasant Hill, Iowa

img-30

Deck Cleaning-Granger, Iowa

You did an awesome job on my daughter’s log home, deck, railing, swing and chairs on the deck. They are totally impressed. My roof looks great, as well as, the stucco on front of my house. I appreciated your professionalism regarding communication and being where you said you would be at the time agreed upon.

Joan Clary, Granger, IA 09/15/2015

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