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crazymama61
Basalt Rock House

My house was built in 1905 out of Basalt rock. There is missing 'stuff'' inbetween the rocks. What do I use to fill in those spaces?

dj1
Re: Basalt Rock House

That "stuff" is most likely mortar.

JLMCDANIEL
Re: Basalt Rock House

I would suggest you check with local masons, because you don't normally just fill those spaces. Pointing must be properly done to be effective and with the right mortar.

Jack

HoustonRemodeler
Re: Basalt Rock House

I'd also contact the area masons. If that stone is native to your area, they'd know best. I usually ask the guys with the roughest hands and the grayest hair. They might know the person who did your house the first time.

crazymama61
Re: Basalt Rock House

Most of the guys who would of built my house would now be builders in heaven! LOL Anyway, thanks for the advice.

Fencepost
Re: Basalt Rock House

There are different types of mortar; two of the most common are based on some kind of lime or Portland cement. It is not a good idea to mix the two. Based upon the age of the house and the location (Idaho), I would guess it's Portland cement, but only an experienced mason would be able to tell you after looking at it.

I'm guessing that the house is near a road? Road salt will eat away at mortar over time. But then again, at over 100 years old, the mortar probably isn't holding up anyway.

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