Is Masonite Siding Fire Resistant

Another piece of masonite omniwood lap siding.

Is masonite siding fire resistant.

That means the siding itself does not catch fire and slows the spread of fire but it does not prevent heat from passing through. Brick as a matter of fact is considered non combustible. Masonite boards are synthetically constructed from a mixture of wood fibers wax and other resins. For comparison purposes the following board is the back of louisiana pacific siding.

Many homeowners looking for a fire resistant house siding may consider products such as vinyl which are technically non flammable as well. Here s a look at some of the common problems arising in masonite sidings and the ways to fix them. Most metal siding is rated as noncombustible which means that in fire safety testing it was shown not to ignite and spread fires. The photo below is the back side of the above omniwood board.

You can add an interior wallboard that resists burning for one hour if you want to take extra precautionary measures. Although metal siding is not generally as inexpensive as vinyl boards it is still one of the more budget friendly options on the market. Fiber cement siding won t ignite burn or melt when exposed to either heat or flames. The strands of wood are about 1 4 inch wide and there are at least two slightly embossed raised rows running the length of the siding.

Fiber cement is also marketed as fire resistant making it an ideal siding choice for homes in wildfire regions. The highest rating possible for fire resistance. As they are manufactured these elements are bound together through a process of heat and pressure fusing these components into. Steel siding not only offers protection against a fire it is also naturally resistant and does not require the use of fire resistant treatments.

Masonite siding is extensively used in constructions. If your wood siding is swelling cracking or constantly needs repainting then you may want to look into masonite siding. A class a rating means it is going to offer the maximum protection possible. I ve found one that i particularly like but it has masonite siding.

However if not properly maintained it will deteriorate. However i ve read lots of horror stories online about masonite siding and i was curious as to what the bogleheads think about it. Brick and stone exteriors masonry exteriors such as brick and stone also typically do well in fire resistance tests. Not only do these tough exteriors stand up well to wind rain hail and sleet they re also very fire resistant.

Rollex navigator steel siding for example has a class a fire rating. The difference though is how the product holds up to heat.