Chimney Rebuild, What You Need to Know

If you need chimney repair and it is beyond the pointdown further or do a little work inside the attic to
of repair for chimney tuckpointing it must be toreget it to a secure rebuild point.
down and rebuilt, and there are a few things thatNow that your ready to rebuild be get your new
you must do to ensure that your new chimney willbuilding materials up to your work station and start
last for years to come.laying in brick. it is very important to keep the
The first thing you must do is select the propercourses level and plum to ensure a good looking and
building materials. You should use a brick that is solidlasting chimney. If you are using clay flue liners put
with no holes in it this will increase its durability. Bricksone in place as you go, once it is secured by brick all
that are cored (with holes) tend to have a muchthe way around it up to the top then place your
shorter life because moisture can build up in the holenext one in place and continue the process till you hit
cavities and break down the brick and mortar jointsyour desired height. code for most areas is 10 foot
from the inside out, this is especially a problem infrom nearest roof line and then 2 foot above that
colder regions. So be sure to pick out a solid brick iffor proper drafting of fumes, Generally in most cases
you can.if you build it to the same height it was you should
Next the chimney needs to be tore down. You firstbe ok, but be sure to check your area code just to
must protect your roof from falling debris, do this bybe sure.
placing a cloth tarp down over it around the chimney.After all your brick and flu liners are in place you need
You should really use cloth tarps because plastic vinylto pour a concrete cap, this is one on the most
ones can be slippery and you don't want to slip andimportant features of your chimney and it should be
fall, it could result in serious injury or death. Afterdone correctly to ensure a long lasting chimney. Yor
your tarps are in place start by removing theflu liner should be sitting about 6 inches above your
concrete cap first, the concrete cap must be first orlast course of brick, next build a form out of 2×4's
you risk a avalanche of heavy masonry units falling allaround the top course of brick, fill your form up with
over the place and possibly through your roof. Youconcrete till you reach the top of your form, Put a
may have to use a partner saw to cut it in sectionsslight slope on the cap from the liner down to the
first before picking it up, they can be very heavy.edge of form for good water shedding. Also tap
Next thing after the concrete cap has been removedyour form lightly as you fill it to help reduce bubbles
is to start removing brick. It is best to use a smallin the pour. After it sets up for a bit say a few hours
hammer drill for this with a pick attachment on it andpull the form and smooth off the edges of it with a
just focus the pick on the joint below the brick yousmall concrete float to seal all holes and to also make
are removing till it breaks free and you can grab it.the cap look nice.
Depending on the roof pitch and placement of theAfter that is complete install a draft cap, or also
chimney you should use a bucket to put debris in orcalled a bird cap to finish off the chimney. One of
if you are confident it is safe below you can throwthese is needed to reduce the chance of back drafts
the brick down to the ground in a designated ropedpushing fumes back into your house and they also
off area below. Be sure to remove the center clayserve to rain out and to keeps small animals out as
flu liner if there is one, as well as you work your waywell. They can be picked up at just about any home
down, but try not to break it, odds are you will sendimprovement store and are relatively cheap. You
debris down your chimney shaft which is not a goodmust also install your flashing around the base of
thing and it will have to then be cleaned out. Thechimney as well to ensure that is is sealed and water
brick should be removed down to just inside yourtight.
roof line unless its really bad you may have to reach