Filling holes in crawl space

[erikssonandreas]

I recently bought a house and have just discovered a hole in the foundation (I have a crawl space). The hole is at ground level and is about 6-7 cm in diameter, going all the way through.

What should be used to fill the hole? Can you use some kind of sealant foam or should you mix concrete?

Appreciate any tips.

 

[orparn]

It's probably an air vent that should be there.

 

[erikssonandreas]

No, I don't think so because the hole is not round in shape but rather uneven.

 

[GzO]

Does any other ventilation to the foundation exist at present?

 

[erikssonandreas]

Yes, there are several "common" valves/grilles.

 

[orparn]

Buy a standard vent grille, break off the collar, and drill holes in the corners for screws.