Various elements, including the type of roof, its age, the weather, environmental issues, aesthetics, etc., must be taken into consideration when deciding which coating is ideal for a given roofing environment. Action Roofing as restoring metal roofs agency invites you to look closely at some of the most important things regarding popular coating types used today below.
The most cost-effective and long-lasting elastomeric coatings available are acrylic roof coatings. These highly reflective coatings, which are made of high-solids emulsion polymers and effective biocides, offer outstanding resistance to mildew and dirt buildup and are perfect for use in harsh UV climates.
Asphalt emulsion, which comprises asphalt particles dispersed in water with clay employed as a bonding agent, is another commonly used substance for roof rehabilitation. Asphalt emulsion, which is often black or brown in color, incorporates additional additives, organic and inorganic chemicals, and other substances to increase strength and durability.
Because of their outstanding elongation and tensile strength, butyl coatings, a polymer based on solvent, are the most used type. They are excellent for roof maintenance and repair and are highly reflective and quick-drying. In cold storage/freezer applications, butyl rubber coatings are most frequently employed as a vapor-retardant barrier over spray polyurethane foam systems due to their low permeability.
For UV protection and resistance to standing water, silicone roof coatings are the best option. They don’t become brittle or hard, but they dissolve much more slowly than other coatings. Modern silicone formulations often contain a large number of solids—more than 90%. This indicates that less material is required to obtain the desired dry film thickness.
Urethane or Polyurethane
Urethane roof coatings are unrivaled in terms of strength, longevity, and adherence. They are more impact-resistant and better equipped to tolerate foot activity than other coatings. They can withstand the harmful effects of standing water as well as the normal thermal expansion and contraction of roof structures.