Cinder Blocks not only can be used to build fire pits but also any other structures such as steps or benches. The materials you will need for this project are cinder blocks, mortar, and a few tools. However, this would significantly increase the cost of your do-it-yourself project.īut, hey, you’re making a low-cost firepit out of free or recycled blocks. Others would use firebricks to line the pit. To protect the structural integrity of your pit, some people recommend placing a steel fire bowl or a fire pit ring on top. If you read reviews, the general consensus is that they should not be used in fire pits because they are not fire-rated (see home depot reviews). TIP: I now understand why people fill holes in Cinder Blocks with gravel or crushed rocks after doing some reading on that site – it improves the fire rating of the blocks. The National Masonry Association website – – has more information on concrete masonry assemblies fire ratings. Fire RatedĬinder Blocks are fire-resistant, which means they will not burn, but they are not fire-rated, and prolonged and repeated fire exposure will cause them to crumble. Patio Paver Calculator + Cost Fire Resistant vs.Free Concrete Slab + Bags Needed Calculator.Read More: Building a Front Porch with Cinder Blocks However, it is not impossible – see ideas below. It is difficult to construct a nice-looking round fire pit with these blocks.They are not very aesthetically pleasing (when compared to other landscaping stones and bricks).More on that debate can be found further down. They are not fire rated instead, they are fire resistant.Some will give them away for free in order to clean up their yard. Because they are so heavy, you don’t have to secure the blocks together.Cinder Blocks are inexpensive and large, so it only takes a few to make a large fire pit at a low cost.It costs $1.35, which is two cents less than the Home Depot price. Lowe’s 8-in x 8-in x 16-in Standard Cored Concrete Block is a popular choice. Caps are the skinny ones with no holes (16′′ x 8′′ x 2′′). Those with through-holes are hollow all the way through. There are several different shapes and sizes to choose from (see image above). In addition, there is usually no setup time involved with assembling a cinder block fire pit, and the structure is sturdy enough to hold up under most weather conditions. You can build your own or have one built by a professional if you so choose, but it’s really not that difficult of a process to complete on your own with the right tools and materials at hand.Ĭinder block fire pit ideas range from basic designs using only four walls with an open-top to more complex ones that include seating areas around the base as well as covering over part of the structure in order to allow people who would like some time out away from the heat during colder months while still enjoying their outdoor space comfortable when warmer weather returns again. The largest size block – 16′′ x 8′′ x 8′′ (with holes) – that most people use for fire pit projects costs just $1.37 per piece. The average cost to build a cinder block fire pit is between $40 and 60$.Ī 16′′ L x 8′′ H x 6′′ W cinder block (with holes) starts at $1.15 at Home Depot and $1.13 at Lowe’s for the same size and shape. They are cheap and easy to find which makes them a popular choice for fire pits. The most commonly used material is cinder blocks. It’s easy to build and will add both charm and function to your yard or patio area. 11 How Long Does Cinder Blocks Last In A Fire Pit? How To Build A Cinder Block Fire Pit?Ī cinder block fire pit is a very common type of outdoor fireplace.
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