For example, the data show that vinyl is less flammable than most polymeric materials (natural or synthetic). It also shows that vinyl will not normally continue to burn unless a sizeable source of fire or heat remains present.

Is vinyl fire resistant?

Vinyl siding is an exceptionally versatile and high-performing choice for exterior cladding, which is why it’s the most common wall material used in today’s new home construction. … Vinyl siding is fire resistant, harder to ignite, and easier to extinguish.

Is vinyl siding flammable?

Fire danger It would seem that vinyl siding would be highly flammable, but in fact it’s not. Composed mainly of polyvinyl chloride (PVC), vinyl siding’s chlorine base makes it harder to ignite and easier to extinguish.