Filling Floor Vents With Concrete

This has caused the metal ducts to rust out and expose the dirt.

Filling floor vents with concrete.

They are metal vents buried and encased in the concrete floor. Now i have these vents in my floor we are on a slab no basement or crawl space and i need to do something with them. When mixed with water it produces putty like mortar with good wash out resistance and a powerful bond onto wet concrete substrates. Functional troubles such as lack of air flow or collapsed ductwork and environmental problems such as.

Concrete would add some strength to the slab. Old metal pipes rust out that they used for slab ducts. Then just fit a piece of sub floor in the opening and screw it onto the 2x4 s. Filling the holes is the easy part.

You put a scrap of 2x4 under the floor across the hole on each side and run screws through the existing subfloor to fix the scrap in place. The hard part is replacing the flooring itself. This water is filling the lowest spot under the furnace where all the basement s heat vents connect. My slab from 1952 had dust neighbor has leaches.

If the ducts are way below the slab it may not be necessary and you could fill w sand top off with concrete. If you have floor registers in your basement that mean that the duct work is either in the slab which would be difficult to do with a typical concrete slab being 4 inches thick or it is running in the gravel below the concrete and just coming up through the concrete. Foam may do the same thing. We recently had our hvac system replaced from floor vents to ceiling vents.

The forced air vents in our floor fill with water whenever it rains. Hvac air ducts located inside concrete slab floors invite a surprisingly broad range of building problems that fall into two broad categories. I have no idea who i should call or what kind of business does this type of repair work. Hvac ductwork in floor slabs.

I would think you need to insert some expansion material to prevent cracking the floor slab. Someone said i should seal the floor vents and install new vents in the ceiling but that sounds very expensive and i would prefer to keep my floor vents. Local companies refuse to work on them. I bet it wouldn t take all that much concrete to fill them anyway and it would be much easier to pump it than to mix it by hand.

I did not have them do it cuz i have heard from others that they should be filled with concrete. This article describes heating and air conditioning ducts that have been placed in or beneath concrete floor slabs. Concrete floor patch fill is a blend of ordinary and specialist cements high quality graded aggregates and a unique combination of polymers and admixtures.