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Fire rated cinder block home depot3/15/2024 ![]() ![]() Make sure you have enough cement mix for at least two bags per block section as well as sand and water if using mortar and grout instead of plain concrete mix with just gravel aggregate added per bag instructions. Then use a hand saw or masonry knife (if they are not square) to trim off any excess material on the edges of the blocks so that all sides will be even when placed next to each other. Using a tape measure, layout your cinder blocks in the shape you want to build your fire pit or barbecue. Note: You can use any type of grill for this project. Materials needed are as follows – Cement, Mulch (optional), Sand (optional), Barbecue Grill (optional). ![]() ![]() Step-by-step instructions on how to build a cinder block fire pit.įollow the steps below that show you how to create this simple outdoor masterpiece in minimal time and cost! 1. 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.
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