Veneer Brick Heat Shield - Mortar for Grout Joints

[karl1989]

Hi

I am building a veneer brick heat shield. I have installed my brick to Durock using Type S mortar. I now want to fill the joints with WHITE mortar but I cannot find any White Type S in my area. Can I use white thin set? Or does it have to be Type S? This is just for the joints.

Im hoping to use some color pigment to get my grout to match my creme brick.

My stove is a Jotul F500 V3 with rear heat shield and double wall pipe so I don't expect a ton of heat to transfer to the brick

 

[bholler]

Hi

I am building a veneer brick heat shield. I have installed my brick to Durock using Type S mortar. I now want to fill the joints with WHITE mortar but I cannot find any White Type S in my area. Can I use white thin set? Or does it have to be Type S? This is just for the joints.

Im hoping to use some color pigment to get my grout to match my creme brick.

My stove is a Jotul F500 V3 with rear heat shield and double wall pipe so I don't expect a ton of heat to transfer to the brick

Thinset will be very messy to use for pointing.

 

[begreen]

Maybe try this?

TXI 50 lb. Type S White Mortar Mix 5327 - The Home Depot

www.homedepot.com

 

[karl1989]

I found this, none of the other white Type S are available in my area (SE Wisconsin)

Quikrete 50 lb. Glass Block Mortar Mix 161000 - The Home Depot

Quikrete Glass Block Mortar is used for laying glass block for indoor and outdoor walls. Contains a blend of hydrated lime, cement and white sand.

www.homedepot.com

Apparently their glass block mix is Type S and is approved for use with veneer brick/stone

 

[Doublebogey]

Commercial masonry contractor here. Type S will work on thin brick for the joints no problem , but In almost all circumstances type n mortar is specced as veneer mortar for full bed depth brick because of its lower compressive strength. We always use type s for cmu walls and sometimes type m for block foundations. Type m is stupid sticky and royal pain to work with. Also overkill since foundations in this area are always grouted solid with high strength concrete that makes the mortar moot.

The fact that you installed the brick to the Durock with type S does not mean you have to use type s for the joints. Type n will work fine in the joints and since it is normally what is used In veneers is more likely what you will find readily in a variety of colors. A builder supply that deals with concrete and masonry contractors should have a selection. For a true white mortar you need white silica sand.

For future reference I would recommend thin brick or engineered stones veneer (or any product that we refer to as lick and stick) be adhered with a polymer modified veneer mortar. If none is readily available it is best to mix in a bonding agent like acrylic 60 for long term adhesion assurance.