Mortar is used between bricks, cinder blocks, or stone to bind them and fill any gaps. It is made from sand, a binding agent (cement or lime), and water.

learn more… | top users | synonyms

2
votes
0answers
175 views

How can I match existing mortar?

I'm trying to find a good sand that matches the mortar that I have in our house right now. I live in Chicago. The house is 30+ years old and as I look at the existing mortar, I see that it has large ...
2
votes
0answers
281 views

How do I level a summerhouse concrete base that dips in the middle?

I laid a 4x3 metre concrete base for my summerhouse/office thing. The corners are all level and so the summerhouse sits fine, but it dips in between and so the load bearing battens aren't taking any ...
1
vote
0answers
44 views

Is it worthwhile to fill minor cracks and holes in mortar?

There are a number of small cracks and holes in the exterior on my 10-year-old brick house. These are very small and do not in any way appear structural. They are much much smaller than the weep ...
1
vote
0answers
131 views

What sand is best for thin-set mortar?

I understand that unmodified thin-set mortar is typically 25-35% portland with most of the balance being a fine sand. If I wanted to make my own where could I obtain this fine sand? What is it ...
1
vote
0answers
188 views

What is a suitable mortar when repointing a wall made of soft red brick?

I am about to re-point the front of my Victorian (1895) house which has soft red bricks. Is a 4:1 ratio of sand to cement suitable? I have read that cement can force the moisture though the bricks ...
1
vote
0answers
212 views

Will I have any issues installing an in-floor heating mat with premix mortar?

I installed a radiant floor heating mat under ceramic tiles using a premix mortar. I now understand this was not the right thing to do. After further research the only reason I can find that suggests ...
0
votes
0answers
8 views

Cinder block retaining wall repair

I inherited an old retaining wall (from the 1980s? repaired once or twice here and there): It has a few cracks and the mortar has gone bad so I'd like to repair it. So I removed the cinder caps, ...
0
votes
0answers
29 views

Kitchen backsplash tile (24“ x 1.5” x 1/2") to drywall; which mortar & trowel notch size?

I will be installing kitchen backsplash tile to a drywall. tile size: 24" width x 1.5" height x 1/2" depth tile type: limestone tile Which mortar or mastic would you recommend as well as trowel ...
0
votes
0answers
17 views

Portland tile mortar being used as a final coating over hb

I am building an outdoor propane fire table. I have constructed a steel frame and covered it with hb. I wanted a modern look so i was going to coat the hb with concrete. I was told not to use cement ...
0
votes
0answers
92 views

How can I install Kerdi over an existing shower pan?

I started out building a shower pan in the traditional method (plastic liner), but, bailed after having difficulties with the shower curb. I have built the first layer of mortar that goes under the ...
0
votes
0answers
380 views

Hydraulic Cement vs Mortar for concrete block wall repair

I am repairing some mortar cracks in-between the concrete walls in my basement. Initially I was using hydraulic cement (I know most is technically hydraulic, I mean the leak stopping kind: ...
0
votes
0answers
196 views

What maintenance does an 1890s brick-over-fieldstone foundation need?

I know that if when it comes time to repoint, I should get the current mortar analyzed to make sure its curing strength is compatible with the old bricks. I know that brick foundations in the time ...
0
votes
0answers
78 views

What would cause mortar to have a patchy finish?

I started a re-pointing project in my basement, but it was way more work than I had anticipated, so I haven't continued in about six months. However, now that i'm looking at mortar I originally ...