Questions tagged [mortar]

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.

Filter by
Sorted by
Tagged with
13
votes
3answers
4k views

How do I self-repair a section of crumbling basement wall, or should I hire a professional?

How do I self-repair a section of crumbling basement wall, or should I hire a professional? Background: How I discovered it: I removed some exposed blue foam insulation from my basement walls to ...
0
votes
1answer
17 views

O or N Mortar for Fieldstone foundation on the exterior side

My house was built in 1860 and I have a field stone foundation. I have some areas on the exterior that I need to reapply some mortar on. I know some people are using type N and adding sand and some ...
0
votes
1answer
31 views

Outdoor kitchen on sloped patio

I am building an outdoor kitchen using standard 8"x8"x16" concrete blocks on a concrete patio which slopes away from the house. The length of kitchen is 120" and the slope of the ...
3
votes
3answers
188 views

Will a slab poured with mortar stand up to service under a pizza oven?

I mistakenly did not add any stones to my foundation mix and now have a mortar foundation. It is 1.6m x 1.6m x 0.2m with reinforced mesh. I am creating a brick pizza oven with hollow concrete blocks ...
0
votes
1answer
74 views

Identifying material on masonry wall

The inner side of an exterior wall in my house has, behind the plasterboard, a kind of masonry which I'd like to identify. I attach pictures. It looks like concrete but it's quite easy to drill: I can ...
1
vote
1answer
52 views

What to do about daylight between brick and mortar?

I noticed a small space between this brick and the mortar underneath it on my front porch. It’s wide enough for me to fit a piece of old duct tape into the gap. I’m not sure when it was repointed last....
0
votes
1answer
46 views

Materials for rock wall repair

I have a rock retaining wall that has seen better days. Some day we may replace it, but for now, I would rather try to do some patching to make it more water right and also to fasten the top stones ...
0
votes
0answers
54 views

How to replace mortar above lintel

We have a brick house and our windows have an iron lintel above them, with a layer of mortar on top of the lintel and bricks on top of the mortar. For one window, it looks like water got under the ...
0
votes
1answer
69 views

Should I be concerned with a minute amount of flexing under a shower tray?

I have recently installed a quadrant shower tray. The manufacturer recommends a 5:1 sand and cement base on an 18mm structural marine ply to support the tray. The tray was set on a 18mm sand and ...
0
votes
2answers
81 views

Gap between tub and greenboard

On the left is a "tongue" (Flange) of the tub that sticks out and on the right is greenboard. It seems to be about a 5/8" gap between the two and I would like to set tile here. Can I ...
1
vote
2answers
113 views

Which thinset to connect USG Durock® Brand Cement Board with EdgeGuard?

I am about to install USG Durock® Brand Cement Board with EdgeGuard onto my bathroom frame where the toilet is (I'm using HardieBacker for the shower FYI). This is new construction. According to USG's ...
0
votes
0answers
17 views

Repair/re-fill gap above basement security sliding door with concrete/mortar

My home will be getting painted in a week or two so I want to better repair a section of missing concrete/mortar above a basement sliding door so it can be painted and sealed. It appears that some ...
10
votes
10answers
2k views

Rusted screws in outdoor outlet box

Summarize the problem I need help removing rusted screws from an outdoor outlet box. A few notes: The outlet box was used for an outdoor light that I removed I turned off the breaker I have access to ...
0
votes
1answer
70 views

1920 UK London House - How should I internal insulate?

The house was built in the 1920's east of London. The inside walls are cold to touch and we are considering insulating them. The house was recently externally rendered without external insulation :( ...
0
votes
3answers
197 views

Cement vs. mortar for embedding stones in drive way

I will be scraping a dirt/gravel driveway down two inches and laying flat stones of various sizes and thicknesses. Need to have the tops at the same level, so some will need to have something ...
0
votes
4answers
319 views

Will a cement mixer extend the working life of mortar?

I'm going to do some brickwork on my own. Last time it was quite the job to mix up mortar and get it laid before it started to go off (I know, working in pairs would be helpful!). I know I can ...
0
votes
0answers
60 views

Fireplace mortar cracks

I have a large crack where the fireplace hearth meets the chimney. I’m curious if this is a foundational problem, and if it needs to be repaired by a pro, or if I should just use a sealant repair ...
1
vote
1answer
495 views

Can I use Type-S mortar and rock to set wood fence posts?

I am trying to set a fence post by the house to fix up a gate door. The usual "bag mix" for this job is a mixture of quarter inch stone and cement and lime. However, I also have a bag of ...
0
votes
1answer
16 views

I am re- pointing between patio slabs using soft sand and a standard cement.The cement recommends 1 : 5 but should it be 1:3 for these slabs? I

I am re- pointing between patio slabs using soft sand and a standard cement.The cement recommends ratio of 1:5,but should this be 1:3 for patio slabs?
0
votes
1answer
113 views

Lime mortar for indoor applications

I have a question. Can I use lime mortar (hydrated lime and sand mix) for indoor applications? I have to re-point an old, brick wall (This is my first time doing it). Is it safe health-wise? What else ...
0
votes
3answers
451 views

Brick to drywall

My home was built in 1971. There is a brick fireplace that runs up the entire wall. The mortar is cracking and breaking in chunks(about 1" thickness) where the fireplace attaches to the wall. I ...
0
votes
1answer
134 views

How to prepare vertical brick surface so Portland cement based mixtures (concrete, mortar) will adhere properly?

I have a sub grade vertical stack of perforated brick (foundation) which I need to coat in a thick layer of mortar or concrete in order to fill gaps, creating a flat surface for subsequent painting/...
0
votes
1answer
429 views

Holes in brick mortar?

There are a couple holes in my house's exterior brick mortar about 3/8" in diameter. Is there any reason not to fill them in? I only hesitate because my masonry knowledge is pretty much nil. ...
0
votes
1answer
30 views

Best way to fix tile

One of our old tiles suddenly feel off, the others seem ok. What's the best to fix back. I don't think I'll be able to get a new tile to match, and I don't think I can chisel the old mortar off ...
0
votes
1answer
483 views

Do I have a fieldstone foundation and if so, do I need to use Type O mortar?

I own a house that was built in 1890. The area of my foundation that I need to work on is an exterior section that is above ground. It is the part between my driveway and where the siding starts. I ...
0
votes
2answers
1k views

How long should I wait to drill holes into brand new mortar?

I just repaired loose bricks on my house in preparation to install new window shutters. When would it be ok to drill holes into the mortar and install the shutters? From my other research I'm going to ...
0
votes
4answers
2k views

Pouring concrete over rocks

Need a bit of guidance here, I have tough yard and my contractors are going to pour concrete over some large boulders and filled in the remaining area with parts of other boulders (6in to 1 foot). ...
1
vote
3answers
2k views

what is the correct procedure to patch up cinder block hole with plumbing?

(followup question to Why is this Ptrap installed in this location?) Here is the hole that I want to patch up: As you can see, it is a cinder block wall with concrete foundation with a new PVC drain ...
1
vote
1answer
39 views

How to maintain an old brick wall

we have a small section of exposed brick from an old chimney in the kitchen. The chimney is now used as an exhaust for the furnaces in the basement (and maybe for the kitchen exhaust in a different ...
1
vote
0answers
18 views

Is there anyway to prevent rust stains or staining of color on a house that has been German schmeared? (Thinset mortar applied to brick)

We applied thinset white mortar on the brick of our house using the German schmear technique. After a very very hard rain, we had some rust stains show up down the brick in areas around older gutter ...
0
votes
1answer
2k views

Retile Shower Floor Only?

I want to replace my mosaic tile shower floor. The shower pan is hot mopped. The wall tiles are set on a 3/4 inch mortar bed. I imagine replacing the floor tile means replacing the hot mop, which ...
0
votes
1answer
130 views

Is this joint between the foundation and first row of mortar typical

Just wondering if this is a normal appearance for the area where the foundation and first row of mortar/brick meet. There are no signs of any structural cracks or anything like that in the area. Is ...
1
vote
1answer
249 views

What should I use to patch this gap between brick siding and top of foundation

I have a small gap between the top of our foundation and the start of the brick siding in one isolated area and was wondering what the best material would be to fill this area.
1
vote
1answer
45 views

Shower base and perimeter adhesive & grout

Just put in the shower floor tile with epoxy adhesive & have the perimeter tiles left to do (the very bottom tile against the shower floor tiles) What Adhesive can I use for this? Is it ok to use ...
2
votes
1answer
395 views

Filling gaps between bricks in pool deck

I am repairing the deck around my pool. Some bricks were loose, so I removed them, ground off old mortar and glued them back. Now I need to fill the gaps between the bricks with mortar, similar to how ...
0
votes
0answers
29 views

Temporary Re pointing of Brick work

I have some damp in a bedroom which is because the wall outside needs re-pointing. I will do this in the summer but what can I do as a temporary fix
0
votes
1answer
3k views

What adhesive to use when tiling the fireplace hearth?

I am tiling the wood burning fireplace hearth and it gets really hot especially in the top-middle. I am wondering what kind of adhesive should I use for this purpose? I don’t want it fail due to high ...
1
vote
0answers
20 views

placing a tile on an old plank floor

The subfloor in my home is 4" planks. The previous owner removed the hardwood, painted the flooring and left it that way (I have no idea why you would do that). Regardless I want to put down tile. ...
3
votes
2answers
418 views

Repairing above-ground gaps and holes in foundation

I am moving into a house (built 1911) that had a few things turn up on the inspection. One corner of the basement has an indoor cistern, and there are some gaps and a hole in the cinder blocks just ...
2
votes
1answer
393 views

What type of mortar should be used for small mortar repair on a 100 year old house?

I've read that one should use a special type of mortar with old brick houses because they expand more - portland mortar vs soft lime. The recommendation from the NY Landmarks Commission states: ...
1
vote
2answers
237 views

Laying Stone on a unlevel concrete surface

first and foremost thanks for the help :) I am in the process of redoing my porch and I have hit a road bump along the way. I am planning on laying real thick stone (as seen here) on the porch floor. ...
1
vote
1answer
98 views

Is this crack between bricks a concern?

I just noticed this crack that has formed along an exterior window. Does this seem like something that needs repair, or just some caulking? I noticed that for some reason the bricks were not ...
1
vote
2answers
824 views

Is this Landscaping Caulk on Outdoor Retaining wall Steps

I have steps leading up through my retaining wall and a few of the stones that cap the steps have come loose. Looking at the place where the steps were, there appears to be some kind of caulk-like ...
0
votes
1answer
497 views

Are phosphate floor screws suitable for subfloor which will be covered in thinset and cement board?

I am installing hardiebacker concrete board with thinset to a plywood subfloor. I am putting down the new subfloor and want to be sure the screws that I use to secure the plywood to the joists will ...
2
votes
2answers
197 views

What is the best proportion mix cement, sand and aggregate to use in mosaics?

I am pouring mosaic concrete stepping stones to be placed in a city sidewalk. The mosaic will go face down into a form and the concrete poured from the back. I have been having problems with my test ...
1
vote
0answers
42 views

Mortar recommendation for repointing this older stone chimney

Which type of mortar or product would you think most appropriate for doing some repointing on this chimney? I've been reading about using mortar that is too hard for the stones. I'm worried I will ...
1
vote
1answer
101 views

Which cement or mortar will give best result when creating low water diversion barriers?

I want to build up a short dam of maybe half an inch in height, to control where water is flowing. The water flows as a small, steady trickle. Right now it fans across a large-ish area. I'd like to ...
2
votes
1answer
1k views

What critter (insect?) removes sand from between paving bricks?

Something is excavating sand/mortar from between paving bricks, as seen here. I thought it was ants, but I've placed ant traps and bait and there seems to be no effect. Also, when the mounds are ...
2
votes
1answer
148 views

How to stop bricks pushing out while drilling?

I need to add an extractor fan to our utility room so I started drilling a hole using a core drill bit from the inside to outside. Its a standard UK brick cavity wall, so brick > insulation > brick. I ...
0
votes
2answers
234 views

Convert recessed brick mortar to concave mortar design to decrease water intrusion due to high winds

High winds cause my 20 year old brick home to leak water through the reduced cement volume in the head joints. Water runs through head joints, down inside of brick wall, then leaks under the sill ...