6 posts / 0 new
Last post
glenmonster
What's behind the wall?
glenmonster

Home was built in 1949, in suburban DC, moved in recently.

In trying to mount a few floating shelves, I ran into a peculiar (to me) situation. My stud finder couldn't locate a stud in my wall, so my friend recommended using "wall dog" screws. In putting the first screw in, I realized the drywall is quite thick, probably 3/4 of an inch. Past the drywall, there is a small gap, and then something metallic. it seems like this metallic area spans the whole wall. The other side of the wall is the exterior of the house, which has a brick facade. The drill bit I used showed no indication of insulation.

Any ideas what's up here? Many thanks!

HoustonRemodeler
Re: What's behind the wall?
HoustonRemodeler

Go to the local barber shop (the kind with the striped pole and hasn't been remodeled since 1948) when the old men are there.

They will know.

Jack
Re: What's behind the wall?
Jack

It could be that you have rock lath.

Jack

Sombreuil_mongrel
Re: What's behind the wall?
Sombreuil_mongrel

Could be expanded metal lath, heat pipes embedded in the walls, or electrical heating devices that were plastered into the wall finish.
Casey

ordjen
Re: What's behind the wall?
ordjen

Metal Lath would not normally be used in conjunction with rocklath. Maybe someone veneered drywall over the original plaster/rocklath? It is about the right time period for the use of rocklath. Pre-straight drywall or blueboard and veneer plaster.

Sombreuil_mongrel
Re: What's behind the wall?
Sombreuil_mongrel

Although rocklath is no longer made, we did a kitchen job in a historic house in 2008 using it, it was the last of the stock in a Baltimore supplier's warehouse. The homeowner insisted that the plasterer also put chicken wire over the rocklath for more strength.
Normally only the corners are reinforced with metal lath, but who knows.
Nor do we know what the OP's walls actually are. It could even be that the partitions are plaster over gypsum block units...
Casey

Sponsored Stories

TV Listings

Find TV listings for This Old House and Ask This Old House in your area.