Edmonton AB isn’t the hottest city on Earth. However, every homeowner knows that when the sun comes up, the roof can crumble or turn visibly weak without any warning for any reason at all. The sun’s heat and UV rays can ‘shock’ the roofing material due to consistent higher temperatures. It is for this reason many homeowners go for maintenance services before any type of roof repair solution during the summer.
However, is a roof coating a good enough roof repair solution for your property? You’ve definitely seen your neighbors and some Internet instructions endorse it as a solution to aging roof materials. They’re budget friendly, and you won’t even need to use the most helpful and dependable Edmonton AB roofing contractors for repairs. Is it all that it’s cracked up to be?
What is Roof Coating?
Before heading in deeper, it’s important we know everything there is about roof coating.
Acrylic and elastomeric roof coating are paints mixed with resin. These serve as binders that attach to roofs and act as a second layer that is water, impact, and tear resistant. In addition, their white color can reflect UV rays. Typically, dark-colored roofs such as asphalt shingles are prone to damage because of UV absorption, which contributes to poor residential insulation thereafter.
If you’re interested in some technical aspects of roof coatings’ chemicals and their role in being a possible long-term roof repair solution, National Coatings has a great list of chemicals you might want to research:
Titanium Dioxide (TiO2): TiO2 is a pigment that delivers excellent durability and reflectivity. TiO2 is opaque to UV radiation; therefore, it blocks the harmful UV rays from reaching the substrate below, while delivering additional protection and durability to the coating. TiO2 causes the coating to be white in color, increasing reflectivity and energy efficiency in a Cool Roof System.
Zinc Oxide (ZnO): ZnO is pigment that also provides opaqueness to UV radiation, whiteness and reflectivity to a well-formulated acrylic coating. ZnO also resists mildew and algae growth without leaching out of the dried coating film and does not deteriorate by continued exposure to UV rays. This pigment provides additional chemical bonding between polymer molecules, making for a tougher and more water resistant coating.
Fire Retardants: These are also pigments with inorganic materials that suppress smoke generation and flame spread. Fire retardant coatings are required for attaining fire ratings such as UL 790.
Extender Pigments: Extender pigments are essentials. They allow the coating to maintain its quality, primarily affecting the coatings abrasion resistance and color retention.
Dispersants and Surfactants: These are additives that impact the ease and uniformity of how pigments are blended into an acrylic coating. They provide in-can stability so that the coating remains a uniform blend that can be applied consistently and correctly in the field, delivering a water resistant roof coating system.
Defoamers: Defoamers ensure a better performing membrane by minimizing entrapped air in the coating which otherwise would cause areas of weakness in a coating system. (Source)
Can Roof Coating Be a Long-Term Roof Repair Solution?
In our experience applying roof coating for Edmonton AB property roofs, roof coating is useful in extending the fresh initial lifespan of a brand-new or recently-replaced material.
In one experiment, we’ve tried painting over a rusted metal roof and a nine-year old asphalt shingle roof layer. The paint helped them prevent water from seeping further and corrupting their base material. However, they only lived for a few more days until both failed to function properly as roofing materials.
However, in our previous projects wherein we applied roof coating to fresh roofing materials, we can verify that it can add 5-10 more years. If your roof has an average lifespan of 50-70 years such as metal roofs, using elastomeric roof paint can extend its lifespan up to 80 years or even beyond if you regularly re-coat your metal roofs.
Roof coating isn’t a long-term roof repair solution, but it is a preventative roof solution that can extend your roof material’s lifespan and durability. Indeed, an ounce of prevention will always trump a pound of cure.
Some Known Disadvantages
Homeowners can safely DIY roof coating paint without the need for professionals. However, it’s important they perform the procedure carefully to avoid forming unwanted paint lumps. These can crack over time and negatively affect your roof’s existing curb appeal.
In addition, aged roofs do not fare well with elastomeric or acrylic paint. The paint will not permeate and fill in the gaps of your roof material. You will still need the help of reliable contractors to repair oversized fractures or holes before you proceed painting them. These holes can collapse the paint layer quickly especially after a single rainstorm.
If you have yet to find a reliable roofer to work with in applying roof coating for your roof or improving its condition prior to roof coating, you can count on DDCL to help you. Contact us today to know about the roster of roofing services we can provide you.