Keep Your Roof Safe With Roof Coating
For an owner or maintenance crew of a commercial structure, the repairs and upkeep of the building are important. There is the safety factor as well as the budget to maintain, and local regulations to be adhered to. With all of that in mind, as most large commercial structures have a flat roof, it is a major concern and focus. Part of that major focus is roof coating and repair, which is the best option when there is an issue: roof coating vs replacement.
There are difficult decisions to be made, such as which roof coating is best and if roof coating and waterproofing will be one job or two jobs. To make those decisions, those in the position of making the decisions must be knowledgeable about exactly what are roof coatings and the purpose of roof coating.
Does roof coating stop leaks?
While roof coating might stop minor leaks, experts recommend that you should locate the leak then repair it first. You should allow the repair job to dry completely before you apply a roof coating.
How often should a flat roof be coated?
What may appear to be a flat roof, it isn’t flat. There is some slope necessary for draining but doesn’t eliminate draining issues totally. An un-coated flat roof has an approximate lifespan of 10 years. Having a professional roof coating applied every five years can extend that lifespan enormously.
Besides roof coating extending the lifespan of a flat roof, it can ease the budget by saving on costly repairs later. The frequency of when a flat roof needs to have a roof coating depends on several factors.
Because draining issues are the main concern for a flat roof, having a roof coating applied regularly is considered a pre-emptive measure. Waiting until there are ponding or leak issues and attempt to roof coating to correct them can often be too late. When ponding is unaddressed, it can lead to fine cracking, referred to as crazing. When a building has sustained any structural damage, roof coating should be done immediately.
Can you paint over roof coating?
Painting over roof coating can depend on the roof coating used. The most popular choices in roof coatings are:
- Acrylic Coatings are water-based, the ideal roof coating for environments with high UV ray exposure. They come in grey, white, and tan but can be specially made in other colors.
- Asphalt Coatings are solvent-based or emulsions that come aluminized or in black. This roof coating is ideal for cold climates with inclement weather.
- Polyurethane Coatings is solvent-based and has two types: aromatic which is less UV stable and aliphatic which is high UV stable. The mechanical properties in this roof coating make it ideal for areas that need a high resistance to abrasions, such as hailstorms or foot traffic.
- Silicone Coatings provide high reflective performance in high UV environments. Silicone roof coating is ideal for rainy environment where ponding may be an issue.
With painting roof coating, elastomeric paint offers good coverage but is difficult to repaint. Once elastomeric has dried, it becomes very slick and new paint doesn’t stick. Solvent-based primers support adhesion, however, roof coating and primer can still have issues in bonding together.
How long does a painted roof last?
There are many factors that will determine how long a painted roof will last, with the first factor being the climate and environment. Other factors are the preparations done before painting, the paint type, the thickness of the paint applied, and if a topcoat is used to seal the paint. A properly painted roof should last the same length of time as the roof coating it covers.
The manufacturers of roof coating products provide advice on if, how, and when a roof coating can be painted. Care needs to be taken in choosing the right type of paint for the roof coating so as not to have them “fight” each other, ruining the coating and you must have the roof coating reapplied, after removing remnants of the previous coating.
A properly installed roof coating that is inspected and maintained regularly should last a structure many years, prolonging the life of the roof itself. A good roof coating will save on energy expenses, especially in climates where the summer weather is brutally hot, and the winter weather is extremely cold with ice and snow on the roof.
For a commercial structure with HVAC or plumbing installed on the rooftop, it is important to get a roof coating durable to foot traffic. Building maintenance should advise any technician that will be on the roof working on what type of roof coating is in place so they can wear proper footwear or take precautions needed to walk on the rooftop.
It is recommended that a complete inspection be done on any flat roof twice a year. This allows for any possible issues or problems to be addressed before they become bigger issues or problems. For all of your commercial roof coating needs in Kerrville, TX, call (830) 955-5075 today!