Filling Floor Vents With Concrete

When mixed with water it produces putty like mortar with good wash out resistance and a powerful bond onto wet concrete substrates.

Filling floor vents with concrete. 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. 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. We recently had our hvac system replaced from floor vents to ceiling vents. If the ducts are way below the slab it may not be necessary and you could fill w sand top off with concrete.

Concrete floor patch fill is a blend of ordinary and specialist cements high quality graded aggregates and a unique combination of polymers and admixtures. The forced air vents in our floor fill with water whenever it rains. Filling the holes is the easy part. This has caused the metal ducts to rust out and expose the dirt.

Hvac air ducts located inside concrete slab floors invite a surprisingly broad range of building problems that fall into two broad categories. Old metal pipes rust out that they used for slab ducts. Local companies refuse to work on them. They are metal vents buried and encased in the concrete floor.

The hvac company was going to blow insulation into them and cap them off w a piece of metal. I have no idea who i should call or what kind of business does this type of repair work. The hard part is replacing the flooring itself. Concrete would add some strength to the slab.

Hvac ductwork in floor slabs. I would think you need to insert some expansion material to prevent cracking the floor slab. This article describes heating and air conditioning ducts that have been placed in or beneath concrete floor slabs. I did not have them do it cuz i have heard from others that they should be filled with concrete.

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. 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. When you pour concrete into slab duct you will have expansion from new cement.

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. 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. Functional troubles such as lack of air flow or collapsed ductwork and environmental problems such as.