1. Fire resistant glass for windows.
Though windows are important for visibility and light, they can be a fire hazard. Even before a window is in direct contact with flames, the intense heat of a nearby fire can cause the glass to break. And a broken window allows flames to enter a building easily. In addition, the heat from a fire outside might be enough to simply ignite flammable items inside a home without direct contact.
To protect your house, consider installing fire resistant windows. One example is dual paned glass windows which in addition to providing energy efficiency, also double the time it would take for fire to break the windows. The outer layer will break first before the inner layer. Tempered glass, which is heat treated to make it about four times stronger than regular glass, is also effective.
Though they do not provide visibility, glass blocks are extremely fire resistant while still providing light. Perhaps the best is wired glass, which is tempered glass with metal wire reinforcement. Doors that require fire resistance but also visibility often incorporate wired glass windows.
It is also wise to note the importance of window framing. Steel framing offers the best fire protection, followed by wood and aluminum. Vinyl is the least effective.
Concrete is one of the most common building materials and it is also an excellent fire resistant material. It is noncombustible and has low thermal conductivity, meaning that it takes a long time for fire to affect its structural, load bearing ability and it protects from the spread of fire. It is significantly more fire resistant than steel and often used to reinforce and protect steel from fire.
However, it is important to note that not all concrete is created equal. It consists of cement and aggregate and the particular kinds of aggregate materials used can vary as well as the amount used. Aggregate can make up 60 to 80 percent of the concrete's volume. The exact fire resistance properties change depending on the type and amount of aggregate used. Natural aggregates tend not to perform as well. Moisture in the aggregate can expand when heated causing concrete to sinter after long exposure.
Concrete is often listed as among the best fire resistant roofing materials too. And you should not overlook the roof as essential in fire protection since it is extremely vulnerable to sparks blown from wildland fire.
Stucco is a plaster that has been used for centuries for both artistic and structural purposes. Modern stucco is made of Portland cement, sand and lime. It serves as an excellent and durable fire resistant finish material for buildings. It can cover any structural material, such as brick or wood. It usually consists of two or three coats over metal reinforcing mesh. A one inch layer of stucco can easily lend a one hour fire rating to a wall.
Roof eaves are a fire hazard but they can be protected with an encasement of fire resistant material. Stucco is often recommended as one of the best materials for boxing in hazardous eaves.
Gysum boards are treated to be even more fire resistant. Many structural materials will require underlying gypsum sheathing in order to achieve a good fire resistant rating and gypsum board is the most commonly used fire resistant interior finish. Gypsum board also known as drywall, consists of a layer of gypsum sandwiched between two sheets of paper. Type X gypsum board is specially treated with additives to further improve its fire resistive qualities.
The paper on the exterior of the type X gypsum board burns slowly and does not contribute to fire spread. In addition, gypsum board has a noncombustible core that contains chemically combined water. When affected by fire, the first thing that happens is that this water comes out as steam. This effectively impedes the transfer of heat through the gypsum board. And even after the water is gone, the gypsum core continues to resist fire penetration for a time. Builders often use multiple layers of gypsum board to increase the fire resistance rating.
Brick is not only resistant to a big bad wolf's huffing and puffing but it is also resistant to fires.
As bricks are made in a fire kiln, they are already highly resistant to fire. However, it is true that individual bricks are much more fire resistant than a brick wall. A brick wall is held together with mortar which is less effective. Brick is commonly cited as among the best building materials for fire protection. Depending on the construction and thickness of the wall, a brick wall can achieve a 1 hour to 4 hour fire resistance rating.
Although some materials are more fire resistant than others, several factors might influence a builder's decision, including cost effectiveness, ease of installation and climate.
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