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How To Coat A Metal Roof

What Is The Best Coating For Metal Roof

How to Apply Metal Roof Coatings | GAF Roof Mate

For a large structure like a commercial or industrial business, metal roofing is commonplace. While metal roofing is durable and long lasting, it needs a metal roof coating. What is the purpose of metal roof coating is a metal roof is durable on its own?

Metal roof coating and sealer add layers of protection to a metal roof, eliminating the possibility of leaks and make it rust preventive. Metal roof coating is an innovative way to make a metal roof more energy efficient, a utility bill cost cutter.

Youll get the best deal from a metal roof coating when its applied as soon as it starts to age. Early bird get the worm and early metal roof coating gets a longer life. When you ignore small things like aging, your roof will develop more problems that could end up costing more money, as much as four times more.

So, how do you choose the metal roof coating for your commercial buildings metal roof? There are roof conditions like leaking seams, flashing, or rust that will require a specialized roof product prior to the metal roof coating. There isnt a commercial roof that doesnt have some physical issue, so youll need to take those of your metal roof in consideration before choosing a metal roof coating.

The ASTM standards for testing include the following characteristics:

  • Elasticity
  • Peel adhesion
  • Tear resistance

To Purchase Please Contact Yourlocal Rv Dealer

Dicors Metal RV Roof Coating, forms a rubber-like blanket of protectioin. The 100% Acrylic Resin is super bright white and helps keep interiors cooler. The dry paint film resists mildew and algae, is easy to apply and requires only soap and water to clean up.

For application on an aluminum surface, our Metal Rust Inhibitor Primer is required for proper adhesion.

Metal Roof Rust Inhibitor Primer 1 Qt.

Surface Preparation:

Remove all loose dirt, oil, rust, chalk, mildew, loose coating or other contaminants, which would prevent maximum adhesion of the fresh coating. If chalk remains on a previously painted roof, repeated washing may be necessary. Thoroughly rinse with water and allow to dry completely before proceeding. Be sure all surfaces are sound and clean, and all rust has been removed down to bright metal, using mechanical methods such as wire brush, sandpaper or steel wool. Prime clean rust removed areas with Dicor Metal Rust Inhibitive Primer RP-MRRIP-Q. Seal all fasteners and around all roof protrusions and vent mountings with Dicor Lap Sealant. Seal all joints and roof seams with Dicor Coating Ready Cover Tape RP-CRCT-4-1C.

Directions for Use:

Clean Up:

Clean brushes, tools and other equipment with soapy water immediately after use. Dried film is difficult to remove from any surface. If coating is subjected to rain, before it has properly dried, and wash off occurs, it is necessary to immediately wash stained surfaces with soapy water to prevent staining.


Metal Roof Coatings Vs Metal Roof Overlays Systems

Thu, Jul 16, 2020 @ 11:39 AM|Perry

For many building owners, a metal roof coating seems like the logical next step to take when trying to stop leaks on a metal roof, especially if other targeted repair attempts in the past have failed and the metal roof leaks.

At first glance a metal roof coating appears to be the path forward to an economical and quick solution to stop the leaks without having to replace the entire metal roof and disrupt either your businesss operations or your tenants.

Metal roof coatings sound great, you get to leave the existing metal roof in place and still fix the leaks, What could be better? And besides that, what other choice do you have?

Most building owners find themselves stuck between an Expensive and unaffordable metal roof replacement option or a metal roof coating option.

In this blog well introduce you to another metal roof repair option you probably havent considered called a metal roof overlay system and well compare and contrast it to metal roof coatings. After reading this article you should walk away with a much better understanding of metal roof repair and knowledge of several possible ways to stop the leaks on your building.

  • Similar in cost, Not in Value, Whats the price difference?
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    Metal Roof Coating Coverage

    Applied in two coats at 1.00 gallons per 100 sq ft. To determine the number of 5 gallon pails needed, divide the square footage of your roof by 250. Or divide by 2500 to determine how many 50 gallon drums you need. This is the number of pails/drums you need to apply two coats at the proper thickness. Once you’ve determined the number of pails or drums you need select the appropriate quantity in the quantity discount box then enter the exact amount of pails or drums you need in the quantity box to get your discounted total price.

    EXAMPLE: Roof is 2000 SF. Divide by 250 for a total of 8 pails. Select the 5-10 option in the quantity discount box to get 50.00 per pail discount and then enter 8 in the quantity box for your total price.

    Metal Roof Coating Features

    Metal Roof Coating
    • UL and Factory Mutual Fire Rated
    • Mold & Mildew resistant
    • UV & Ozone resistant with no sign of pitting or wearing under ASTM 9000 HR Accelerated Weather Test
    • 65% Solids and not water based! Means more of the coating you apply to your roof will still be on your roof after it dries. Many coatings have more than 50% of the coating you apply evaporate away as it dries. That’s why they’re so cheap to buy, most of the product is either water or inferior solvents. There’s no magic formula as to how other roof coatings are sold so cheap it’s because they are cheap products, water is cheap, solvents are cheap, silicone is cheap and you get what you pay for. That’s why the Air Force stop using the silicone coating they were using, it didn’t last and it didn’t work and the lifetime warranty was bogus.
    • Elongation rating of 500% with 99.999% memory retention factor. Means it stretches and contracts more than standard coatings and will maintain it’s original shape better and longer. That’s a big issue with bargain coatings they stretch out after a few years and once they do that they are not as effective at keep water out of your building!
    • Flexible down to -40 degrees
    • Shore A Hardness of 50 is rated for normal foot traffic, very cut and impact resistant
    • Heat reflectivity of 90% save up to 30% on cooling costs
    • 12 Year Guarantee! Routinely lasts 15-20 years till recoat is required.

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    Working On Your Roof Safely

    After you determine the paint you want and gather all of the necessary materials, youll need to prepare so that you can work safely. Continue reading this section for the best way to paint safely:

    • Grab a buddy If youve decided to do the job yourself, grab a friend to help you out. Make sure you thank them in some way, whether its buying them a beer and pizza or paying them for their efforts.
    • Work from a ladder as much as possible Its usually safer when you work from a ladder rather than up on the roof. Just remember to keep it away from any power lines or doors.
    • Wear a harness with a safety rope when youre on the roof If you need to go on the roof, wear a harness with a safety rope. Anchor the rope securely to either a tree or a part of your home.

    Buy Liquid Rubber Waterproof Sealant Today

    Liquid Rubber Waterproof Sealant will help you save money, not only by waterproofing your metal roof for less but also by protecting it from rust and damage from the elements. Your older roof will receive a much-needed facelift, which will beautify your home and add to its value. Liquid Rubber Waterproof Sealant is solvent-free, non-toxic, water-based and safe for use around pets and family members. Find out how Liquid Rubber Waterproof Sealant can help you repair and waterproof your metal roof. Shop now and join the loyalty program.

    Read Also: Shingling A Shed Roof

    What Causes A Metal Roof To Leak

    If you aren’t sure if your metal roof is leaking, you might want to inspect it. Tell-tale signs to look for so you can prevent any further damage include:

    • Loose or missing fasteners
  • Apply Liquid Rubber Seam Tape around vents, flashing and protrusions.
  • Paint Liquid Rubber Waterproof Sealant over seam tape around vents, flashing and protrusions to seal.
  • Apply Liquid Rubber Waterproof Sealant on the entire roof with a brush, roller or sprayer.
  • Allow the sealant to dry between coats.
  • Apply a colored or reflective top coat, if desired.
  • If some areas of the roof have a significant amount of rust, apply Liquid Rubber Multi-Purpose Primer before applying Liquid Rubber Waterproof Sealant. If the roof is more heavily rusted, use Liquid Rubber Metal Safe Sealant.

    The best time of the year to waterproof your metal roof is at a time when you can avoid hot, direct sunlight while temperatures remain above 5C/40F. You also want to make sure to avoid starting your project if there’s a forecast for precipitation. For areas prone to dew in the morning, application early in the day works best to allow time for drying between coats and for the final coat to dry before the next morning.

    Different Types Of Metal Roof Coatings And Different Types Of Metal Roof Overlays

    Roof Coating Restoration over Metal Application Instructions

    Just as there are several types of metal roof coatings on the market today such as acrylic based, polyurethane based, Elastomeric, and siliconized coatings, there are also two distinct types of metal roof overlays:

    As mentioned in the beginning of the article, building owners seem to have no problem finding their own way to metal roof coatings as a repair option, however the metal roof overlay systems option isnt as self evident or as obvious as a possible solution to metal roof repair.

    In Fact, we find most building owners arent even aware that you could install another metal roof on top of your existing metal roof, , or that you could install a TPO/PVC flat roofing membrane overtop of your existing metal roof, .

    Moving forward, its worth noting that metal roof coatings are easier to compare to the TPO/PVC membrane over metal option than the metal over metal roof overlay.

    Metal roof coatings and TPO/PVC over metal roof retrofits are similar in class and also in the price installed even though the TPO/PVC over metal has much better long term performance. The comparison is fair, more like apples to apples, and we see this comparison play out in the real world everyday as building owners consider their metal roof repair options and their budgets.

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    Cleaning With Pressurized Water

  • 1Favor using plain water over chemical cleaners. Expect clean water alone to get the job done most of the time. Save yourself the time and money and use chemical cleaners only when absolutely necessary.XResearch source Expect these to leave behind streaks and film if you dont thoroughly rinse them off.XResearch source
  • Rinsing your roof with water at least once a year should reduce the need for using chemical cleaners.
  • 2
  • What Causes Condensation Problems On The Underside Of Metal Roofs

    To understand what causes condensation, we reached out to Chris Davis, President of DripStop. Chris explains that there are two important things to remember with condensation, and they may seem somewhat counterintuitive:

    • Warm air holds more moisture than cold air
    • Warm air is actually lighter than cold air

    Essentially, condensation occurs at night, when the temperature inside a building is warmer than outside. Warm, wet air rises and meets the cold roof and cools. As it cools, it cant hold as much moisture. That excess moisture ends up as drops of condensation on the roof: Picture a cloud of moisture floating overhead between the rafters.

    This video shows what a significant condensation problem can look like.

    There are essentially three factors to be considered in the fight against condensation lets take a closer look at each of them.

    Recommended Reading: How Many Screws Per Square For Metal Roofing

    The Benefits Of Roof Coatings

    Elastomeric roof coatings have been around for a long time. That being said, many facility owners and managers are still relatively unaware of the numerous advantages they provide.

    Before we get into the strengths and weaknesses of the various types of coating chemistries available in the industry, lets get an idea of the many benefits a coating system provides, in general.

    How Often Should You Paint A Metal Roof

    What is Roof Coating and What Are the Benefits  Barrys ...

    How often you need to repaint metal roof depends on the type of paint system and quality of work that was previously done on your roof. Generally, metal roofs need to be repainted every 10 years. It is a good idea to have your metal roof inspected by a professional at least once or twice a year to ensure there are no hidden issues or painting that needs to be done.

    Read Also: How To Install Skylight On Metal Roof

    Design And Color Of Your Home

    Depending on the design and color of your home, the color of the metal roof should be aligned. For example, if your outdoor house paint and the roofs color do not match, it will create a bad display of aesthetics.

    Therefore, it is important to study the outdoor of the house and its color and then carefully pick a color that will complement and enhance the overall look of the house.

    Best Paint For Metal Roof In 2021 Buying Guide

    If you are searching for the perfect roofing solution to keep your house cool during a hot summer, a metal roof would be your best answer. This roof is quite the trend and is highly sustainable as well. Moreover, the cost of putting it up is relatively cheap.

    Once put up, it will last for years to come. To further enhance its sustainability, coating it with paint would be great. To help you with this, we have listed the 11 best paint for metal roof in 2021.

    Coating a metal roof with paint not only increases its sustainability but also improves its aesthetics. Keep reading to find out which paints made it to our top 10 list!

    Jetcoat Cool King Reflective Acrylic Roof Coating

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    Liquid Rubber Color Waterproof Sealant Indoor & Outdoor Coating

    If we are to name one of the best paint for old metal roof, this paint will surely be mentioned. This paint too like some of the previous picks is completely water based. Manufactured by Liquid Rubber, it is available in the color water in a container measuring 1 gallon. Due to its watery base, it is quite smooth and easy to apply. On top of this, it has great adhesion as well.

    Not just outdoor roofs, you can use this paint to color your indoors as well. It provides a smooth coating for metal roofs, sloped roofs, and every other kind of roof, and also works on wood and concrete. Furthermore, you can even paint the plant boxes with it. Besides, it can be used to paint the basement.

    This paint provides high flexibility due to its efficient elongation. Its final membrane will give you full coverage without running the risk of adhesion failure. On top of this, the paint completely blocks out UV rays, thus protecting the inhabitants of the house from any harm. It also helps to keep the house cool by blocking the heat rays.

    Each gallon of this paint is capable of covering an area of 30 square feet if you apply 3 to 4 coats. A layer of these many coats will give you a color membrane of 30 milliliters, which is good enough to protect the metal surface.

    Highlighted Features

    • Provides maximum adhesion

    Painting Rusted Galvanized Metal Roof

    How to Coat a Metal RV Roof with Dicor Products

    Painting rusted galvanized metal roof is one of the best ways to maintain your roof properly and prevent any further damages. Some people assume its not such a good idea to do that, but I beg to differ because it may actually work wonders. There are many paints out there you can use to paint rusted metal, but you have to ensure you only select the best one.

    When it comes to painting a rusted metal roof, its important to clearly understand what youre doing. Luckily, this post is here to offer you the right tips and insights on how to go about it in the right way.

    Also Check: Roof Replacement Cost In California

    Will Rust Come Back After Painting

    Unless you get rid of all of the rust and identify the reason that you got it in the first place, rust is likely to come back after painting. There are many ways in which you can prevent the rust from coming back which you will need to incorporate into your painting process. Using a primer that is at least 80% Zinc can be great at preventing rust. When painting, use a specialized metal roof paint which you may have to top up every couple of years to make sure the rust isnt coming back.

    You need to make sure that the roof is prepped properly before painting and ensure that it is clean. Following the method stated above will give you the best chance of getting rid of the rust entirely.

    Can You Paint Directly Over Rusted Metal

    When you notice rust on your metal roof, your first thought is to paint it to cover it up. Unfortunately, it isnt as simple as painting directly over rusted metal, you cant just put a layer of paint over the rust and expect that to fix the issue, you need to do a few steps before you actually paint.

    The extra steps are worth it, and will give you a much nicer, and more efficient finished look and will stop the rust in its tracks to prevent further damage and stop it coming back in the future.

    You can not paint directly over rusted metal as this will not fix the problem, and your finish will look poor, with a lot of texture showing through and rust most likely to appear again in a couple of days. It is better to tackle the rust once and for all to get rid of the problem so more damage isnt done.

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