2005年11月11日 · Fire brick = fire clay. Either the dry clay you mix yourself, or that "sairset material in the gallon cans. The brick and clay have essentially the same coefficient of expansion so there is no separation. Do not use a portland mix as the joints will begin to crumble out. A lot of granite carvers use a propane torch to pop the surface off.

2006年12月13日 · Where I work, we have 12 Heatilator fireplaces. The units range in age from 10 years old to1 year old. The "fire brick" liners are starting to crumble. Some of them are cracked and some of them are crumbling in the center of the back wall. The liners are 3 piece units, the back and each side. The liners are about 1/2 inch thick.

2012年8月2日 · A local building inspector recommended installing new rafters with their ends wrapped in 30# felt paper as a wise upgrade from Code. The idea to keep untreated wood separated from the brick mortar found in the walls that they are secured to because, so the thinking goes, the portland cement in the mortar mix will breakdown the wood in the long run.

2012年6月20日 · Mortar set 100% I learned a trick. Screed off dry mortar bed, (Over concrete pad) set pavers, fill joints with dry mortar mix and lightly mist to set. Rub off with burlap. I simplified this as I am tired but if you need more detail just ask. Sand is sand. It will move. I just don't understand the whole mentality except that it is a cheap way out...

2022年2月7日 · We use thinset all of the time over tile backer board. I prefer this system because the brick lay much flatter than over lath. Couple of pointers: Don't over-butter the backs because thinset sags much more than mortar, you're pretty much grinding them tight. Keep your hands clean, it's easy to smudge the faces and thinset stains worse than mortar.

2012年1月20日 · Hydraulic-setting refractory mortar Hydraulic-setting refractory mortar is the best all-around refractory mortar. You can use it to lay the firebrick, set or parge the throat and smoke chamber and set clay flue liners. It has the workability of ordinary Portland-based mortar and can be made almost any color using ordinary mortar color.

2011年7月15日 · A refractory product will only absorb enough heat to get the 1 1/4" brick hot before a thermal imbalance is reached and begin reflecting heat at that point. Now, by the same token, during cool down a brick and mortar fireplace will provide heat long after the fire has gone out, not true with a refractory product.

2006年3月29日 · I usually use type N. I mix it generally add water, 10 sand, the bag of mortar, then generally I add anywhere from 8-10 more sand and adjust the water to get consistancy as needed. Different companies seem to take different amounts of water to get the same constistancy mud you get from the bag of mortar and 18-20 shovels of sand.

2006年11月4日 · Thin brick jobs installed in the last five years number in the thousands. Full Brick are being made to a hollow brick spec instead of a astm 216 spec. Full Brick used to ship 15 billion a year and already went below 4 billion for 2009. They continue to lose market share.

2016年9月26日 · I’ve built hundreds of fire pits and lined everyone with firebrick, but I think a custom metal liner would likely take care of the issue for you. Also, you want to have the mortar cured before starting a fire and building the fire small at first. If you go right to a full fledged “bonfire” it is likely you’ll see some cracking.