Is it appropriate to apply silicone paint to American Standard UL 790 class a?

It is necessary to confirm the base material for painting , Such as conventional metal plate , Incombustible plate, etc .UL 790 It is a fire prevention Laboratory for roof coverings , There are three test levels ：Class A,B,C,Class A It is relatively demanding , And so on , Therefore, I apply for Class C There will be more .

remarks ： Before the test, it is necessary to confirm whether the base plate is combustible or non combustible , The combustible base plate is wood board or plywood , The incombustible substrate is metal 、 concrete 、 plasterboard .

UL 790 Standard terms 1.2 The scope of application of fire tests of three levels of classification is described in ：

1.2.1 A The class a test applies to the following roof coverings ：

It is expected to effectively resist serious fires , Provide a high degree of fire protection for the roof deck , Will not fall from position , It is not expected to cause flying fire hazard .

1.2.2 B The class a test is applicable to those who are expected to effectively resist moderate fire exposure 、 Provide moderate fire protection to the roof deck 、 Roof coverings that do not slip from position and do not pose a fire hazard .

1.2.3 C The class a test is applicable to the test that can effectively resist mild fire 、 Provide light fire protection for the roof deck 、 Roof coverings that do not slip from position and are not expected to cause a fire hazard .

UL 790 There are three test methods in the flame retardant standard ：

Intermittent flame test

Flame spread test

Cribbing test

Reference products ：

Photovoltaic panels ;

wood ;

Various roofing materials ：

Relevant standards ：

ASTM E108 Standard Test Method for fire test of roof coverings

NFPA256 Roof covering test

ASTM D226 Specification for saturated bitumen organic felt for roofing and waterproofing

ASTM ED312 Specification for bitumen for roofing

ASTM D2626 Specification for saturated bitumen and coated organic felt substrates for roofing

ASTM D4442 Test method for determination of moisture content of wood and wood-based materials

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