3 votes

What should I do to prepare chipped cement surface for tiling?

Do nothing! The adhesive you'll use between slab and tile will fill those gaps, and as long as it does, there won't be any weak points that may cause the tile to crack later, when walked upon.
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  • 2,632
3 votes

I laid my back patio flush with the back door. I know this isn’t right, now what do I do?

There are quite a few options in the realm of "drive way" drains as pictured below. If you have a place to drain the water to it might work.This would be installed just outside the door. ...
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2 votes

filling sunken living room with concrete

I know of several sunken rooms which were raised to the level of the adjacent levels. All of them were done with wooden joists. It seems to me that filling the sunken room with concrete would not be ...
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  • 19.6k
2 votes
Accepted

Block wall drilling considerations

There are usually no concerns in drilling into blocks or concrete, unless drilling though to the outside underground and making a path for water to leak in. Mortar is the easiest to drill into, but ...
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  • 5,481
2 votes

Pure concrete hollow cylinder

I realize this is quite a late reply, but in case it is still relevant: My dad has had one of these for ages, it's a small piece of concrete sewer pipe. The RCP seems to have held up quite well to ...
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  • 21
1 vote

Is this mold on my concrete slab foundation?

There's no way to tell just by looking at a photo. If it's mold. bleach will kill it and turn it white/colourless, If it's adhesive it will likely be unaffected by bleach. we also can't tell if it ...
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  • 13.2k
1 vote

What type of mortar for foundation blockwork below ground level?

Gathered the answer elsewhere. For anyone else searching the same, my architect confirmed 1:1/2:4 CEMENT: LIME: SAND MIX (CLASS M6) for below the damp proof course. This is confirmed in this table. ...
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  • 277
1 vote
Accepted

How can you tell if interior concrete floor is sealed?

You can not tell if concrete is sealed from a photo. The adhesive for the tiles could even damage some sealer’s. To see if you have a moisture problem take a piece of plastic like a trash bag and tape ...
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