A little on the Commercial side of things.

Pictured below are granite steps that are peeling and ugly after only 10 years of use.
Replacement cost= $16,000.
Found the cause and solution to salvage.

In the third picture, there is a two foot section of a tread that was done for a sample.

Marcel :slight_smile: :slight_smile:

Thanks Marcel do you think this repair will last .
How was the repair on #3 done ?
what was the cause of these steps not lasting ,Salt?

Need the right tools Roy.

By using various bushing tools with your pneumatic hammer, it is possible to rough out, finish carve and texture many types of stone. This valuable stoneworking technique not only saves time, but also produces a wider variety of surface finishes than is possible with conventional hand tools.
Some important things to remember:

Do not hold onto the bushing chisel. Hold the pneumatic tool perpendicular to the stone so the chisel moves freely, bouncing and spinning over the surface in a random pattern (called “dancing”).

The 4-point chisel (above left) is ideal for roughing out your work and will leave a course texture. The 9-point chisel (center above) removes less material but leaves a finer surface. The cup chisel (above right) will not dig and is excellent for curved areas; use it to achieve a smoother texture prior to final finishing.
In my case, I used a diamond tip bushing head on a Hilti electric hammer drill set on drilling and hammer mode. This spins the bushing head around instead of direct impact.

The cause of the de-layering was initially due to the process of over thermal.

Granite like many other stones, undergo a process of smooth glossy finish, a honed finish where the stone is smooth and not glossy, and the thermal finish which is used for steps and what not. This process is done with an external flame and roughens the surface to give it a texture.
During this process, if the external heat applied is to hot, it will layer the stone as shown in my previous post.

Bushing down the stone with the right head, can bring the stone back to it’s original state and harder layer of the stone matrix.

Hope this helps a few.

Marcel :slight_smile: :slight_smile:


You are the MAN thanks Marcel , Much appreciated …

Seen it done but had no idea what was happening.

Installing an underground propane tank.

What is that little bag on the ground?

What is that man doing with that little wire on the tank?

Key words; Cathodic, and Cad-----

Hope some like.

Marcel :slight_smile: :slight_smile:

Marcel, will that tank be insulated before being buried?

Was a long winter putting this one together.

Last week

Last week

Last year

Last week

Marcel :slight_smile: :slight_smile:

No Peter; I see very few tanks here that get insulated in or out of the ground.
Preference would be in the ground so they do not frost up as much and affect the gas pressure.

Their will be very little draw on this 1000 gal. tank and should not be a problem.
Grills for College Kids. Oh and don’t forget the Pizza Oven. ha. ha.

Marcel :slight_smile: :slight_smile:

Marcel, the reason I asked was I see many commercial tanks insulated with spray foam, Icynene, I believe to control moisture.

Frost from a heavy draw causes loss in pressure.

Moisture causes rust, that is why that little bag in the picture is there.

Marcel :slight_smile: :slight_smile:

I was wondering about that, how does it work?

Check this out Peter, that should answer your question.


Marcel :slight_smile: :slight_smile:

Thanks Marcel, very good info.

The anode seems somewhat technical but very simple at the same time.

I do not have very much experience with underground tanks and very rarely see the so you info. is helpful. Thanks again

…uhmm…CATHATER! :smiley:

Funny Paul:p

The word was CadWeld or another term would be Thermite Weld.

Marcel :wink: :smiley:

Seems similar to sacrificial anodes on boats Marcel. Interesting, who would have thouhgt.

Shotblasting old carpet adhesives for installation of quarry tile floor.
Manufacturers will not warranty their adhesives (thin set cement) on top of glues.

Marcel :slight_smile:

Hey Marcel,
Here’s a couple pictures of an old mill building. My company renovated the top floor, about 20,000 square feet into office units.

Guess how we made the arches???

Nice Peter;

My guess would be that if it is a bearing wall, the suport beam is concealed and the fill in is drywall, don’t know. ?

At any rate, I think my arches were bigger. ha. ha.

Marcel :slight_smile: :wink:

OK Marcel, your arches are bigger than mine.

Here’s the trick I used to make the arches correct to match the eyebrow above the window.

I made a perfect 90 degree angle on the floor with chalk, at the corner of the 90 I nailed down a straight edge 12 feet long, I placed plywood on the floor and used this giant compass and scribed a perfect angle on the plywood which was then used as a template for the Sheetrock.