Brick Steps
Summary: Building steps leading down to your patio is not a project for a rookie. Building brick steps can be done several ways. You can use the traditional brick and mortar method or use interlocking concrete bricks, that require no mortar.
DEAR TIM: I need a set of brick steps to take me down to a patio. I have no clue how to build brick steps, and wonder if I might be out of my element. Is it hard to build brick stairs like this, especially ones set in mortar? I have watched masons building brick steps, and it seems that if I take my time, I might be able to succeed. What are the basic things I need to know to survive this project? Pete J., Lexington, KY
DEAR PETE: Building brick steps is not a project I would recommend for a rookie. That doesn't mean I don't think you can do the job, it means that there are several skill sets required to get professional results, especially since you want to lay the brick in cement mortar.
There are two sets of nearly identical brick steps at my own home. I built them nearly twenty years ago, and they look as good today as the day I completed them. I used special 1.5-inch-thick paving brick that are designed to be laid horizontally on the ground. These paving brick were fired in the kiln at a high temperature for a significant amount of time. This is why ice, snow and countless freeze-thaw cycles have not deteriorated the brick.
The best way to think of traditional set of brick steps is to think of two sets of steps. There is the set of brick stairs you see, and the one underneath the finished brick. Think of the finished brick as just a facing. If the first set of steps is built correctly, then the brick will cover these much like a pair of jeans covers your legs. If you are able to visualize this, you are going to be able to do this job.
I built the hidden set of steps using concrete block. These block plus the finished brick are very heavy, so to ensure the brick steps would never crack or crumble, I poured a concrete pad that acts as the foundation for the brick steps. This concrete pad was 6-inches thick and had one-half inch steel reinforcing bars spaced at one-foot centers placed in a grid pattern like a crossword puzzle. The steel was placed in the middle of the wet concrete. Take the time to make sure this concrete is poured on compacted ground, and the finished surface of the concrete is level.
The day after I poured the concrete, I started to use different sized concrete block and concrete brick to build the set of steps that had the same width, depth and tread height as the finished brick steps. Using this coarse masonry material allowed me to learn some of the tricks when working with mortar. It is imperative the first set of concrete block steps are level side to side and that the treads tilt forward so water runs down each step to the patio. I engineered in a tilt of one-eighth inch per foot of fall to each tread to achieve good drainage. You don't ever want water to pool on a stair tread.
The mortar I used to hold everything together was just a mixture of fine sand and Portland cement. Do not use traditional brick mortar as it is not really the correct material for installing brick flat on grade. Regular mortar works fine for walls, since water can readily shed to the ground. Portland cement is formulated to withstand ice and snow when mixed, installed and cured properly. I used a blend of three parts sand to one part Portland cement for my mortar.
The 6-inch riser height for each step was simple to create. I placed the brick on its narrow edge so the flat part of the brick created the riser face. The bottom edge of the brick was flush with the back brick of the tread below. The one-half-inch wide mortar joint between the top of the riser brick and the flat tread brick above adds up to 2 inches exactly. You can create a 6.5-inch-high riser if you add a visible mortar joint under the riser brick.
The 21.5-inch deep tread not only looks good, but it is safe and comfortable to walk on. In my opinion, whenever you build steps with risers less than 7.5 inches, you want a deep tread where you take an extra step before you go down to the next tread. The 21.5-inch depth gives you the needed room to take that extra stride.
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Comments:
Bob 06 Mar 2008, 11:00
Building two riser brick walkway coming from my backdoor. Will follow above
instructions, but wondering if you know how to pu the thin grey slab of
concrete along the top of the bricks and mortar that is popular today. It
might be granite, but it goes right on top of the bricks. thanks, Bob
AsktheBuilder 09 Mar 2008, 11:09
Bob,
Sorry, I have no clue what you are describing.
Juris 23 Apr 2008, 23:00
I think what our friend is trying to describe is a blue stone tread. Blue
stone treads are about $40 for a 3 footer and are available at a masonry
supply store.
Installing a blue stone tread just takes normal mortar joints, "paint" a watery mixture of mortar on the bottom side of tread to create surface tension with mortar, gently and evenly press tread into place, hammer with rubber mallet to fine tune, slight slope for water drainage, and your done. Caution though, when placing tread 2 people must gently, evenly and perfectly put it in place. Anything short of perfection and your better off removing all of the mortar and starting over, rather than try to chisel it out after the first winter when it slides off the step. Also, don't forget the mortar seem between the brick risers and the bluestone tread or the first freeze will unseat the tread and your back at it with the chisel wishing you'd hired a mason.
Old Bob 21 Sep 2008, 14:59
You say "Do not use traditional brick mortar" and that you use "a mixture
of fine sand and Portland cement". I thought that was what Sakrete mortar
mix was! No?
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