Welcome to Longhorn Commercial Roofing

For your San Antonio roofing solutions, trust a company that has covered nearly three billion square feet of roofing in Texas. When you need a new roof, or you need to repair and extend the life of your existing roof using one of these miraculous new roof coatings, call us first!

40+ years of Experience Covering Over 2.7 Billion Sq. Ft. Phone: 210-446-3982

San Antonio TX Roofing Company

Commercial & Industrial Roofing Repairs and Replacement. For any roofing need in San Antonio Texas, call 210-446-3982 for time-honored customer service

Longhorn Commercial Roofing has been a top roofing and general commercial contractor in the industry for over 40 years. When we started the business we wanted to focus on customer service, competitive pricing, and unbelievable company ethics. That is why so many clients from all over the nation continue to choose Longhorn Commercial Roofing for their roofing projects. We covered over 2.7 billion square feet of roof. Not only is your satisfaction guaranteed, but we offer 20 year renewable warranties on the roofs that we install. Rest assured if you pick Longhorn Commercial Roofing as your roofing or general contractor, you are picking one of the best in the industry. We offer the following roofing products:

The asphalt shingle roof is the most popular type of roofing in the United States. The average lifespan is up to 20 years. The materials start at prices below a dollar a square foot, are easy to install and simple to repair. If your shingle roof is aging, we offer a seamless, durable elastomeric coating to seal shingles against leaks and damage.

Metal standing seam roofs are factory-made panels with raised seams that interlock then are sealed watertight. It has been used in half of all low-rise commercial and industrial buildings constructed in the last several years.

Modified bitumen is ideal for buildings with flat or low slope roofs. It is manufactured in rolls with adhesive on the underside to bond the roofing to the substrate.

Metal roofing complements home exterior decor, delivers the long-lasting affordability commercial structures require, and is the first choice for industrial building. In light colors, or with a metal roof coating, the energy efficiency is significant.

Roof coatings adhere to many kinds of roofing materials. The products are not “one size fits all,” but are engineered for specific roofing materials. What they do have in common is exceptional “reflectivity,” which means heat from the sun bounces away from the surface, significantly reducing air conditioning costs.

Elastomeric roof coatings are applied as a liquid, and then dry to a seamless coating that prolongs the life of your roof. It is an economical roofing solution for BUR, modified bitumen, metal, cement, and EPDM roofs.

For rubber roofs, a seamless coating results in years of worry free and maintenance free service. An aging EPDM roof shrinks and cracks. The coating restores leak protection.

Metal roof coatings are the innovative solution for commercial, industrial, farm and ranch structures. Your roof is coated with layers of polymer leak and rust protection.

Flat roof coatings eliminate the succession of troubles associated with flat roofs such as chronic leaking, ponding and rapid deterioration. Ask about it if your current roof is hot-tar modified bitumen rubber; built-up single-ply metal; or polyurethane foam.

San Antonio roofing company, Longhorn Commercial Roofing, serves the entire state of Texas. Call us at 210-446-3982 to speak to one of our experienced customer service representatives.

Longhorn Commercial Roofing Blog

Benefits of Elastomeric Coatings on Commercial Roofing Systems | San Antonio TX

Jamie Ndungu - Saturday, August 15, 2020

Elastomeric coatings are a common and popular type of coating for commercial roofing systems. These coatings are similar to rubber, and most types are water-based. Elastomerics can be applied to many different sloped, slanted and flat commercial roofing types and protect roof materials in San Antonio, TX, from thermal heat damage. Most elastomeric coatings are applied in at least two coats, and a third coat is recommended in certain circumstances.

Butyl Elastomers

Butyl elastomeric roof coatings are liquid sealants. They work well over flat, metal, and single-ply membrane roofing systems. The sealant protects your roof from the elements and lengthens the roof's functional lifetime.

Isobutylene was first discovered in 1825 and it was developed into butyl rubber by 1937. Butyl rubber is a synthetic rubber, or elastomer. It is very flexible and impermeable to air. Common uses of butyl rubber include solvents, adhesives, fiber optics, fuel additives, sports equipment and window insulation.

Butyl elastomeric commercial roofing coatings adhere securely to many types of substrates, including metal, modified bitumen, built-up roofing, concrete, polyurethane foam, concrete and single-ply TPO, PVC or EPDM. The coating forms a seamless, waterproof membrane that is very flexible. This synthetic rubber sealant stretches during high temperatures and maintains its original shape in cold weather. These properties let butyl sealants resist cracking and shrinkage.

A sealing coat can be applied to the entire commercial roofing system and joints. Butyl coatings reflect UV rays to prevent roof degradation and reduce or prevent further leaking and degradation of weathered roofs. Some butyl coatings contain pesticides and mildewcides.

Acrylic Elastomers

Perhaps the most recognizable type of acrylic plastic is Plexiglass. It is often used for bullet-proof windows due to its high impact resistance. Plexiglas is an all-acrylic material, but most acrylics are produced to blend with other materials. Blended acrylics are used to make numerous products, such as paint, caulk and adhesives. The greatest advantage of acrylic polymers is their versatility.

Acrylic polymers are formulated to possess various qualities for specific purposes. Some acrylic polymers are tough, hard and flexible, while others are elastic and flexible with a high tolerance of low temperatures. Acrylic polymers capable of waterborne emulsion were developed in the mid-1950s. This development led to acrylic latex house paint. Waterborne acrylic paint is extremely durable, and it is now one of the most commonly used types of house paint.

Acrylic polymers designed for roofing coats are applied as a liquid with a brush or spray mechanism. The liquid polymers form a tough, durable and seamless membrane that fully adheres to roof substrates. Acrylic elastomeric roof coatings reflect UV-rays, resist ponding, retain flexibility at low temperatures, and expand or contract without cracking.

These properties help coatings stand up to thermal expansion in San Antonio, TX, and seismic expansion caused by snow or rain. Commercial roofing coatings also need to withstand regular foot traffic due to routine tasks such as servicing HVAC units, maintaining satellite dish antennas, and caring for other types of equipment related to specific businesses. Acrylic polymers do not absorb ultraviolet radiation, and acrylic coatings contain UV blocking pigments to protect roof substrate as well. Most acrylic coatings are white and reflect up to 85% of sunlight to reduce roof temperatures and minimize heat transfer to the building.

Polyurethane Elastomers

Polyurethane roof coatings, also known as urethane coatings, are some of the most durable and rugged of all elastomeric coatings. They adhere strongly to numerous roofing substrates including modified bitumen, single-ply, EPDM, smooth and gravel BUR, concrete roof decks. Some polyurethane coatings are used for sprayed-in-place polyurethane foam insulation. Polyurethane coatings are resistant to ponding and extremely flexible to withstand thermal expansion and contraction. They are also exceptionally impact-resistant compared to many other coating types, so they are often used on roofs with high-traffic areas.

Polyurethane coatings are categorized as aliphatic or aromatic. Aliphatic coatings are UV stable and highly reflective, so they are very useful for preserving colors. These properties also reduce heat transfer during summer months and reduce coolings costs. Aliphatics are normally applied as a top coat due to UV stability and their ability to resist dirt. Aromatic coatings are less UV stable and usually function as base coats.

There are also several disadvantages of polyurethane commercial roofing coatings, which explain why polyurethane is not universally used despite many strongly positive characteristics. Polyurethane produces a strong, unpleasant xylene-based odor. The vapor is not dangerous, but it is pervasive and most people strongly dislike the smell. Buildings with fresh air intake HVAC systems should take precautions before and immediately after polyurethane coating application. Set the system to recirculate air within the building or turn the system off completely until the coating has finished drying.

Polyurethane coatings are also solvent-based, which causes difficulty during application. The urethane liquid wears out hydraulic spray equipment quickly and leads to frequent repairs. The spray equipment must be carefully cleaned and maintained during and after use. Single-component urethane coating liquids are constantly curing, even in the original product container. Plural-component urethane does not start curing until it is mixed.

Silicone Elastomers

Silicone commercial roofing coatings contain more solid components than most coatings, so they are usually applied in a single coat. Silicone is one of the easiest types of coating to apply. These coatings dry quickly and they can be applied regardless of outdoor temperatures. Silicone-based coatings are solvent-free with very minimal VOC levels.

One positive aspect of silicone coatings is also a negative in some circumstances. Silicone repels most dirt and liquids. This will keep your roof nice and clean, which is especially helpful in high-traffic areas, but other things you may want to apply are not going to stick either. For example, spray foam will not adhere to silicone. You would need to remove the silicone layer and reapply it afterwards to add spray foam.

Contact Longhorn Commercial Roofing in San Antonio, TX, with any commercial roofing questions and inquiries concerning roof coatings. The skilled technicians at Longhorn can offer advice on protecting your building's roof.

Photo By jorgeflorez at Shutterstock


Signs of Commercial Roofing Problems and the Importance of Roof Maintenance and Repair | Commercial Roofing in San Antonio TX

Jamie Ndungu - Sunday, April 15, 2018


The roof of your commercial building is the first line of defense in case of seismic disasters such as hail, ice, snow, fire, rain, heavy winds, storms, heat, etc. The roof, on the other hand, is also very vulnerable. It is exposed to different weather conditions at all times, every day, and certain elements may contribute to its deterioration. Not to mention deteriorated roofs pose the contents of the building to a high risk of damage.

The authority that sets safety standards for commercial buildings, called the International Building Code (IBC), has set a requirement for the roofs of commercial buildings to “serve to protect the building.”

This and other safety reasons are the force that compels people to call professionals such as Longhorn Commercial Roofing in San Antonio, TX. A roof’s strength does not only depend on the materials used to construct it and appropriate installation but also on the design of it. A roof that “protects the building” is built considering all of these things to ensure safety and the business’s continued operation in case of a disaster.

Apart from the construction requirements, you need to ensure schedule regular programs of inspection, maintenance, and repair in order to increase the useful life of your roof and ascertain that it does what it is meant to do.

Here are the common signs of problems related to commercial roofing in San Antonio, TX and everything else you need to know about roof care.

Recognizing the Signs of a Roof Problem

As a business owner or a commercial building owner, it is your responsibility to keep a check of the problems your roof might be facing. If it is been a while already since you last checked your roof for any issues, it should be your foremost priority to hire a professional for commercial roofing in San Antonio, TX to identify and fix any existing and potential problems.

If the roof is facing a serious problem, the signs are often evident from inside the building as well. For example, water stains on the top surface of the premises may indicate a leak caused by a crack or hole in the roof.

Remember, no leak is negligible or less important from the other, even if it is a small leak. Even the smallest leak you see can easily put you in shambles by expanding over time. Likewise, if your commercial building has molds or bad odor inside it, this may be a sign of water penetration because of roof leakage. It’s important to understand that even the smallest leak can be a sign of big trouble.

While these few signs observed from inside the building are sufficient for you to call a professional for commercial roofing in San Antonio, TX, it is more important to physically inspect your roof yourself to see if any problems are evident and keep them from worsening.

While business owners or other people working in a building should regularly check for roofing problems in a commercial building, this is not enough. There may be underlying/hidden problems that only a professional for commercial roofing in San Antonio, TX will be able to identify and resolve. For this reason and more, it is a smart choice to hire a contractor to ensure safety as well as to prevent and/or fix the potential/existing problems and their recurrence.

Looking for the Visual Clues on the Roof


  • Ponding on the roof or water that is standing for long can result in premature aging and destruction of the cover of the roof and ultimately cause huge leaks. Leaks that are left untreated deliberately or are unnoticed for awhile can steadily result in the rusting, rotting, and deterioration of insulated concrete and gypsum decks, which turn into a thick paste. Furthermore, the water standing on the roof can put additional pressure on it due to the weight, which then weakens the deck of the roof.
  • If you see bubbles on your roof, this is probably a sign of trapped moisture inside the cover of the roof, which can soon cause leaks. Trapped moisture can also drastically reduce the durability of the roof, accelerate premature aging, and reduce the effectiveness of the roof’s cover system against forces such as winds.The release of gases trapped below the cover from the insulation board could be another source of bubble formation on your roof. A moisture survey done by an expert dealing in commercial roofing in San Antonio, TX will help diagnose such issues easily.
  • Waterproof material or metal strips that are fixed along the roof is called roof flashing. It is also draped around other roofing equipment to deflect water away from the seams and joints. When a gap emerges in the flashing or roof cover perimeter, it increases the risk for roof failure during an event that leads to water intrusion or brings in high winds and molds.
  • Cracking, worn seams, or tears in the roof cover can also make a way for water to enter below the cover and cause problems.

Hiring a Professional for Roof Care and Maintenance


  • Choosing a provider who is established, licensed, and/or has bonded professionals.
  • Obtaining estimates before the work has started.
  • Checking if the provider and his technicians are insured. If possible, ascertain that the coverage for liability and workers’ compensation insurance is up-to-date.
  • Checking website ratings or contacting your local Better Business Bureau to know about any complaints filed against the provider.
  • Discussing and verifying your warranty and guarantee options. Confirming what is or isn’t covered and asking any questions you need to be clear.

A roof that is properly maintained and strong is imperative to safeguard your building, business, and the people associated with it. A little amount of money spent on roof maintenance goes a long way. Dial 210-446-3982 to connect with the experts at Longhorn Commercial Roofing in San Antonio, TX.






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