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housebird350 t1_iy9cna0 wrote

I would scrape it out and use mortar, not mastic. You can also use "patchcrete" its already mixed and comes in smaller tubs if the repair is fairly small, it will keep you from having to buy a 60lb bag.

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SpaceGoonie t1_iya9beu wrote

Also, make sure it's freeze thaw stable. Many are for indoor use only.

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SatanLifeProTips t1_iy9zvgt wrote

If it’s the gap between concrete stairs and a home you NEVER use mortar. The home and stairs have different thermal expansion characteristics. You need a sealant that remains soft and pliable.

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housebird350 t1_iya07lj wrote

Thats not what OP said though, he said holes IN THE STEPS, not the joint between the steps and the house.

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SatanLifeProTips t1_iya0emc wrote

Did you read what I said before you downvoted me?

I read what the OP posted and felt it was important to add a disclaimer for the house to steps connection.

Edit: we are also both assuming concrete steps. But the OP doesn’t even say what kind of steps they are.

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