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Replacing Ductwork In Concrete Slab. System is defective and allowing sub-slab moisture migration. When go for a concrete replacement. Fill the duct register hole with the concrete and let it dry. If youd prefer to just keep the in-slab ducts if cleanliness was addressed long term.
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Encasing the duct in concrete with porous fi ll beneath is the best way to install PVS duct. If your ductwork is breaking down under the slab a coating is not going to do you any good. An optional vapor barrier can be placed between the pipe and the. No problem with Argon Gas as the complete system will be sealed forever and you dont need sheet metal in them. Once you figure out where its coming from and the ducts remain dry Id maybe stuff some balloons down the holes and fill with concrete. Then mix up some pre-mix concrete and dump it into the hole in the floor into the ductwork.
Another alternative would involve completely rerouting the ducts possibly overhead through the attic though that too would be a last resort.
There are companies that can use thermal imaging cameras to pinpoint hot spots in the floor where a duct might be broken allowing you to cut into the slab at that point and make a repair. Air Specialty Duct System. Sure its done all the. Trenches are dug in the soil according to the HVAC blueprints. Details are at HOW to REMOVE INDOOR RADON. The only option that the professionals have come up with is to use a split unit such as Mitsubishi to heat and cool the level and filling underneath ductwork with concrete.
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Describe more about the exterior. System is defective and allowing sub-slab moisture migration. Concrete is them poured around the ducts as they lay in the soil. Often times the ducts are in direct contact with the soil. Describe more about the exterior.
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If youd prefer to just keep the in-slab ducts if cleanliness was addressed long term. Then mix up some pre-mix concrete and dump it into the hole in the floor into the ductwork. Dig trench for the duct put in some. Also no concrete driveway services can restore it to strengthened conditions. Finally the concrete slab is poured on top of the ductstrenches to form the homes foundation This practice of in-slab ducting has become notorious for different types of problems like functional troubles lack of air flow or collapsed ductwork and environmental problems radon odors flooding mold insects.
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Then these can be scrubbed out not just vacuumed paint sealed with a few layers of sprayed-on paint via a hose. Hope this helps you guys. Expert Member Dana Dorsett Sep 13 2018 0233pm 1. There are companies that can use thermal imaging cameras to pinpoint hot spots in the floor where a duct might be broken allowing you to cut into the slab at that point and make a repair. Let the ducts be the barometer until you have the big moisture issue improved.
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Maybe someone would have a better idea. Another alternative would involve completely rerouting the ducts possibly overhead through the attic though that too would be a last resort. A duct under a slab could easily become a difficult to service or repair water infiltration path or mold farm well before a buildings lifecycle is up. The notion that you have to supply the heating air under a. First use expanding foam to fill the ductwork below the floor at each register.
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Your instincts agree with mine. The Air Specialty Duct System can also be used as a general. The main reason I want. If supply ductwork must pass through a subslab space it should be seamless or sealed airtight with durable aluminum tape or duct mastic. If your ductwork is breaking down under the slab a coating is not going to do you any good.
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Details are at HOW to REMOVE INDOOR RADON. The primary use of the Air Specialty Duct System is to exhaust air from bathroom fans range-hoods and clothes dryers. It would require a heatingcooling apparatus on the wall in almost every room. If youd prefer to just keep the in-slab ducts if cleanliness was addressed long term. Remove the floor cut concrete and replace leaking duct with new PVC ducts.
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Also no concrete driveway services can restore it to strengthened conditions. Also no concrete driveway services can restore it to strengthened conditions. Directly below a concrete slab is installed above the original line of undisturbed soil and above the water table. Maybe someone would have a better idea. It uses a special tape to seal the joints and is much stronger than normal sheet metal ductwork so you dont have to worry about it collapsing although you do have to make sure people dont put too much weight on it wheelbarrows full of concrete.
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Let the ducts be the barometer until you have the big moisture issue improved. This is an expensive option because the new ductwork typically needs to be installed in an already-finished space. It helps eliminate the condensation issues which promote the mold mildew and other nasties. Fill the duct register hole with the concrete and let it dry. Due to this condition damp rise is also suspected.
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The duct encased either in concrete or buried industry standards. Trenches are dug in the soil according to the HVAC blueprints. Remove the floor cut concrete and replace leaking duct with new PVC ducts. There are two basic methods for dealing with water in sub-slab ductwork. When some parts of the entire concrete pavement has damaged.
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I would recommend against breaking up your slab for any reason. Concrete is them poured around the ducts as they lay in the soil. Weve also used Low-E slab shield wrapped around the ducts which seals up when the concrete is poured. The In Slab Duct Installation Process. Cheapest option but will be least effective at heatingcooling the space.
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Remove the floor cut concrete and replace leaking duct with new PVC ducts. It helps eliminate the condensation issues which promote the mold mildew and other nasties. Also no concrete driveway services can restore it to strengthened conditions. Then these can be scrubbed out not just vacuumed paint sealed with a few layers of sprayed-on paint via a hose. HVAC Slab Ductwork Seal Concrete.
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Abandon the ducts in the slab and run ducts in the wallsattic if at all possible. A slabs concrete and rebar are a monolithic unit when the concrete is poured all at once. No problem with Argon Gas as the complete system will be sealed forever and you dont need sheet metal in them. System is defective and allowing sub-slab moisture migration. Contrarily concrete replacement is the removal of the already present layer and application of entirely new concrete pavement.
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Details are at HOW to REMOVE INDOOR RADON. It uses a special tape to seal the joints and is much stronger than normal sheet metal ductwork so you dont have to worry about it collapsing although you do have to make sure people dont put too much weight on it wheelbarrows full of concrete. Contrarily concrete replacement is the removal of the already present layer and application of entirely new concrete pavement. The least expensive solution may be to fill all ductwork with concrete and install all new ductwork in the. Share Improve this answer.
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The least expensive solution may be to fill all ductwork with concrete and install all new ductwork in the. Often times the ducts are in direct contact with the soil. No problem with Argon Gas as the complete system will be sealed forever and you dont need sheet metal in them. Due to this condition damp rise is also suspected. Directly below a concrete slab is installed above the original line of undisturbed soil and above the water table.
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Once you figure out where its coming from and the ducts remain dry Id maybe stuff some balloons down the holes and fill with concrete. The main reason I want. I dont know of anyone who could do it personally but it really should be quite quick simple with wonderful results. Placing any return-air ductwork under the concrete slab is not recommended since this will tend to draw radon into the ductwork and distribute it around the house. Share Improve this answer.
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Cheapest option but will be least effective at heatingcooling the space. Then the floor would need to be re-poured and new flooring installed. A duct under a slab could easily become a difficult to service or repair water infiltration path or mold farm well before a buildings lifecycle is up. Air Specialty Duct System. Span Crete is also twice as strong as regular concrete there- by eliminating the need for the top flooring concrete over it.
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Placing any return-air ductwork under the concrete slab is not recommended since this will tend to draw radon into the ductwork and distribute it around the house. It uses a special tape to seal the joints and is much stronger than normal sheet metal ductwork so you dont have to worry about it collapsing although you do have to make sure people dont put too much weight on it wheelbarrows full of concrete. The Air Specialty Duct System can also be used as a general. A duct under a slab could easily become a difficult to service or repair water infiltration path or mold farm well before a buildings lifecycle is up. Sure its done all the.
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Directly below a concrete slab is installed above the original line of undisturbed soil and above the water table. Dig trench for the duct put in some. When you start getting ground water in the ducts you basically have 4 options. The In Slab Duct Installation Process. By breaking up a slab fixing ducting or plumbing and then repairing the rebar and repouring concrete its no longer a monolithic unit due to cold joints where the old concrete joins the new.
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