Proper ventillation is one of the most important factors in your roof lasting it's full lifespan, looking great for decades, and not creating black mold issues in your attic or crawl space. Not only d ... read more
You didn't mention if the grout was colored. Be very careful to NOT use any bleach based products on any colored grouts. Something that works good on all types of grout is bon-ami mixed with vinegar. ... read more