Kiprobalhato wrote:
yeah, i guessed it was drywall.
whooee, i'm glad my house was built in the 40s with harder materials and that i won't risk damaging my home's structural integrity my my short busts of anger.
though it is a bit unsettling when i try to nail something onto the wall and i can hear bits and pieces crumbling inside it. such sounds were heard today when i tried to nail some artwork of mine to the wall (i seriously have no space for it in my room anymore).
It might be a lath and plaster wall. But if it was built in the 40's, especially post-war, it probably is drywall. Or it could be plaster over a drywall backing. Drywall (sheetrock) was heavier and harder back then, but over time it can become brittle.
Whatever it is though, if it is crumbling, I would be really careful about hanging stuff or putting much stress on it. Like Sweetleaf said, it won't affect the structural integrity of your home, because the weight is all put on the framing, not the wall covering. But either drywall or plaster could start cracking.
I have some walls that crumble like that, and I use hooks like these to hang stuff on them.
http://www.ebay.com/itm/20-BRASS-PLATED ... 416dbec2fdThese are designed to be push pins so they go in a little easier than a nail or screw and it is less likely to damage the wall. And they are more reliable than using nails because they go in from an upward angle and rest against the wall. A nail can become loose in a crumbly wall and fall out when you least expect it.