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1

Typical mortar joints are 3/8", but there is no rule for it, that it has to be that size. They can be much wider than that. I have seen joints as wide as you have pictured, no big deal, it is a matter of aesthetics. The mason could have looked to find the right size brick, but he may had to order them and possibly pay a premimum for them, especially if he is ...


0

In the UK we fit all our chimneys with a 'cage' or 'balloon' made from strong wire formed into a ball (other decorative shapes are available) with long stiff legs that are pushed into the chimney pot to hold it in place. The ball shape prevents large birds from building nests on top of the warm flues, ironic since most folks around here call them 'bird ...


16

Sounds like you need a chimney cap These come in a variety of sizes and shapes. They keep out most rain and snow and, most importantly, animals. You should attach any cap with stainless screws and lead anchors. Sealant is not a big issue, since there is no need for air or water tight joints. While sealant might hold in most conditions, strong winds ...


1

I'd recommend Not using any petroleum-based sealant on any surface subject to heat (it will soften and melt). For a positive and weatherproof seal use any 100% silicone caulking (Dap, Owen-Corning, etc.). For an even better and longer lasting seal against water go with any exterior Urethane caulking. Well worth the slight cost increase, but is U.V resistant ...


1

The best support for that 10 foot tall, 2 ton (4,000 pound) column of bricks would be a column of bricks underneath it all the way down to the foundation. Wait, you already have one of those... ;-)


1

It is 'thinkable' in my opinion, BUT!... There are (among others, already pointed out) reasons to not to do so. Let me bullet this: brick weights a lot - try to compute it (well, I know that You cannotcompute ;) but at least, try to do so), so it needs a good, solid support - that makes another issues: computing the support (civil engineer ...


2

Have you the faintest clue what 10 feet of chimney weighs? "reinforce here" to WHAT exactly, that's going to hold up 10 feet of bricks? This is a bad, terrible unthinkable idea. Take it down from the top, or hire somone else to take it down from the top, or far enough from the top that you feel comfortable working on it. Don't kill yourself, or someone ...



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