Liquid membranes are designed to penetrate into raised or bumpy surfaces (e.g.
Can Wifi Penetrate Concrete Walls. Generally walls like this are made of more substantial material; Do concrete walls affect wifi?
drain - Does a plumbing vent need to penetrate the roof ... from i.pinimg.com
So, my concern is along the same line made in mark's comment. Going through plasterboard walls or wooden doors is a lot easier than to go through steel enforced concrete ceilings. Do plywood walls let wifi radiation through?
A common point of wisdom when it comes to routers is that the 5 ghz band is ideal since it travels brick and concrete are much better at absorbing wifi signals than wood is.
Will any of these ap's be able to penetrate concrete and allow for wireless coverage in the resident bedrooms? I know wifi don;t penetrate concrete, only thru doors(losing signal strength). Will the google wifi penetrate a brick exterior wall for security camera's? Can wifi penetrate concrete walls?