Some less than reputable roofing contractors are telling customers around st.
Silicone vs urethane roof coatings.
More than just an opinion this idea has proliferated the roof coatings industry for nearly a decade.
You might hear some contractors refer to a silicone roof coating as a cool roof because of is reflective capabilities.
A urethane roof coating system with an aromatic base and an aliphatic top coat is durable stays cleaner and is more resistant to ponding water than an acrylic coating.
Leading urethanes such as humiseal 1a33 offer protection to 125ºc.
Since they are your building s first line of defense against the sun this is an alarming trait.
Astm c920 federal tt s 001543 astm d 5893.
Silicone conformal coatings on the other hand offer protection of 200ºc or higher.
Urethane roof coatings are a fluid applied roofing system.
They are now used as coating applications over a variety of existing roof membranes.
Silicone also holds dirt on the surface and loses reflectivity over time.
However our experience and the research proves otherwise.
One major concern with polyurethane roof coatings is their poor uv resistance which causes them to turn yellow and chalk when exposed to uv rays.
As one may guess opinions aside there are pros and cons that exist for both silicone and acrylic roof coatings.
Aliphaltic coatings are more expensive but are uv stable hold color well and stay cleaner than most other coatings.
Polyurethane coatings were initially developed to be applied over sprayed in place foam roofs.
The testing standards required may vary by sealant chemistry silicone or urethane.
They are most commonly used for sprayed in place polyurethane foam insulation as well as other commercial roofing substrates including modified bitumen single ply epdm smooth.
Urethane roof coatings more commonly known as polyurethane roof coatings are among the strongest and most durable elastomeric coatings available in the industry.
This is typical with conformal coatings as silicones typically offer the best protection temperature wise.
Our team sees silicone roof coatings lose their efficacy on a regular basis.
Louis that silicone commercial roof coatings will last 50 years.
They also do well as cool roofs because they.
Moreover you can choose between aliphatic and.
Silicone roof coatings last 50 years.
There is no doubt urethanes are among the strongest most durable coatings on the market today.
Building specifications often dictate that a sealant meet particular testing standards.
A silicone roof coating can reduce your energy expenses.
The more common tests applied to silicones and urethane sealants are.
Silicone roof coatings are better than acrylic roof coatings.
