The Tiny house Blog

Types of Roof Coatings: Choosing the Right Option for Your Roof

By
Jason Francis
Designed and built over 100 custom tiny homes, lived on a sailboat for 9 months, and loves to live life to the fullest with his wife and their 4 kids.
Updated on:
August 24, 2024
Types of Roof Coatings

Image Source: Canva

Applying a roof coating is one of the smartest things you could do to protect your home or buidling. It not only increases the life of your roof but, in addition, gives much more strength to it. With so many options though, how to tell which roof coating works best? Whether you need to fight wear and tear or are looking to enhance energy efficiency, having a full understanding of your options goes along way.

Why Restore Your Roof?

Roof coating and restoration services can enhance the appearance of your roofing system without having to do a full replacement. 

A roof coating can save you a lot of money if your roof is still structurally sound but looks worn out. This solution is often more beneficial since the time required for roof replacement may result in interruptions and unanticipated expenses. Moreover, these coatings protect against UV rays, water and extreme temperatures hence reducing frequent repairs.

However, if you truly wish to reap all the benefits from your newly-restored roofing, it is essential to choose the most appropriate coating and consider factors such as where you live and the climate in your area.

Different Types of Coatings for Your Roof

Let’s explore the different types of roof coatings and how to select the one that’s perfect for your roofing system.

1. Acrylic Roof Coatings

Acrylic roof coating often used in moderate climate. It’s water-based, so if you want something that can be applied easily, has excellent UV resistance, and is compatible with most roofing systems, then this could be the one for you. 

Acrylic coatings are UV resistant and, therefore, are capable of reflecting sunlight. This  help cool the room faster and lower down energy cost. They are also flexible  which means they can expand and contract with your roof to prevent cracks. 

If your roofing system has the tendency to hold water, however, acrylic might not be a good option as it has the tendency of wearing out faster especially if it is exposed to such a environment all the time.

2. Silicone Roof Coatings

Roofs that have problems with pooling water better off using silicone roof coatings. They are widely used on flat or low-slope roofs, particularly in humid and rainy regions because of their high moisture resistance and their excellent waterproofing properties facilitate a natural shedding of water.

Silicone is more expensive than other coating types but when applied properly, a silicon coat may last 10-15 years or more. Silicone also reflects UV rays like acrylics do so it can help to cut down cooling costs but may pose safety risks during repairs or maintenance as they tend to be slippery when wet.

3. Polyurethane Roof Coatings

When your roof carries heavy loads or it is in a harsh weather environment, polyurethane roof coatings are quite good alternatives. These coatings are known for being very tough and resistant to impacts which makes them suitable for roofs exposed to physical stress. They also adhere well to different roof surfaces including metals as well as asphalt based ones. 

Aliphatic polyurethane provides excellent UV stability which make them great for for long-term protection purposes; but it can release strong smells during application and tend to be pricier compared to acrylic.

4. Asphalt Roof Coatings 

Asphalt roof coatings are always the leading choice for many years now, especially for low-slope roofs. These coatings are often made with aluminum or other materials that reflect and enhance UV resistance and moisture proofing which why they are quite popular in areas experiencing heavy rains. 

The thing is, asphalt does not possess as much flexibility as the alternative options, therefore, its life expectancy is generally less compared to silicone or polyurethane coatings.

5. Cool Roof Coatings

Designed to reflect more sunlight and absorb less heat than conventional roofs, cool roof coatings are perfect for hot climates. These can be made of different substances such as acrylics; silicones and polyurethanes among others. 

The greatest benefit of cool roof coatings is their energy efficiency. By reflecting more solar radiation, they are an environmentally favorable option with the potential to considerably minimize air conditioning bills. The upfront cost of this type of coating material is usually higher; however, this extra cost would be covered by the electricity savings over time.

How to Choose the Right Roof Coating

When choosing the correct roof coating, you should look at factors such as your roof’s material, weather conditions and specific needs. The following guidelines will enable you to make an educated choice.

Climate Considerations: Silicone is the most preferable selection in wet regions due to its excellent waterproofing qualities. For the hot sunny areas, cool roof coatings, or acrylic coatings can be used to lessen energy costs.

Roof Material: The nature of your roofing system also affects your decision making process. Metal roofs can be coated using acrylic or polyurethane coatings; on the other hand, asphalt based coatings may be more suited to asphalt roofs.

Foot Traffic: Polyurethane would be a better alternative for highly trafficked rooftops compared to other types of coating available.

Budget: Although some coatings like silicone or even polyurethane offer maximum protection against harmful elements, they tend to be pricier than others. Let your budget guide your choice.

The Impact of Roof Coatings on Energy Efficiency

Reflective roof coatings are especially instrumental in reducing heat consumption by buildings. The US Department of Energy says that using reflective coatings and cool roofs can reduce peak cooling demand by 11-27%. This reduction in energy usage leads to enormous savings on monthly bills for utilities in places with high air conditioning loads.

Application of roof coating helps reduce the heat load on buildings and make HVAC systems run more efficiently, thereby reducing wear and tear on them. A research made by Lawrence Berkeley National Lab disclosed that cool roofs (including those with reflective coat) were able to cut down on the cooling energy demands of buildings in hot climates, reducing electricity-related greenhouse gas emissions. These efficiency gains are important in saving costs especially in commercial properties where HVAC systems require substantial initial investment.

Additionally, depending on the material and condition of the existing roof, according to Roof Coatings Manufacturers Association (RCMA), coatings can add another 25 years onto a roofs life. 

Given these statistics, opting for roof coating and restoration instead of a complete roof replacement can be a wise decision, especially in scenarios where the existing roof structure is still in good condition but needs a protective layer to enhance its performance.

Invest in Roof Coating and Restoration—Your Wallet Will Thank You Later

Whether you want to extend your roof’s lifespan, boost its energy efficiency or just offer it an added layer of safety, knowing what alternatives you have will assist you in making the right decision. 

It takes careful considering of elements such as the weather conditions in your area and the material of your current roofing system to make the choice that best serves your purpose.

Choosing the correct roof coating is not only about instant protection;  it’s about safeguarding future investments and peace of mind. With the right selection, you can ensure that your roof stands up to nature while still keeping your home or business safe and secure.

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