Building A Chimney Using Flue Block

Each chimney level must have six blocks.

Building a chimney using flue block.

As noted in the previous section it may be made of either brick or metal pipe. Construct the flue and outside of chimney. There are however several that are accepted nearly everywhere. As you are building the outside of the chimney lay the flue tiles at the same time and use the mortar to seal them together.

You ll need the 7 flue liner. Lay the brinks on top of each other building up the chimney s walls on each side. The gap between the liner and chimney must be filled with rubble so that the liner is stabilized. If clay or ceramic tiles are used to create the flue in a brick chimney they are laid as the exterior of the chimney is put up.

The flue connects the top of the smoke chamber to the roof through the middle of the chimney. Masonry chimney flue article index. This allows for the blocks to form an internal square of eight inches by eight inches which can accommodate standard chimney flue. Of brick is laid between them and bonded to the chimney walls.

Building code requirements. A chimney made of concrete blocks and ceramic flue tiles uses a special type of block that is sized and shaped differently than the 8 by 8 by 16 inch blocks found in concrete block walls. 100 mm unless no flue liner is used in which case a. A typical chimney construction would start with the liners being supported on a suitable lintel or gather if being used above an open fire.

Adjust if needed before the mortar dries. Building code requirements for chimneys may vary on a local basis. Common chimney problems such as cracks draft chimney height leaks leaning chimneys or chimney stains chimney inspection repair methods are discussed here. I assume you plan to use the 16 square flue block i think the new ones are 17 sq.

You ll need to use cat block or otherwise fill the block to make a floor for the clean out opening. Other sizes are available but this is the most common found in most areas. Build a clay flue liner inside the chimney block. Periodically use a level to make sure the brick wall is level both horizontally and vertically.

Chimney wall thickness should be a nominal 4 in. Get the thimble in the length size you need and the flue liner and 2 pc chimney block that is cut out for it. Concrete chimney blocks are 24 inches square with a hole at the center that is sized to fit a section of vertical ceramic flue tile. The liner building must always be one step ahead the chimney building.

Here we list key articles useful for building inspecting diagnosing or repairing problems with masonry chimneys.