Questions tagged [radon]
The radon tag has no usage guidance.
83
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How can I repair soil gas barrier membrane when relocating basement drains?
My dad and I are finishing his basement and the three piece bathroom is roughed in by the builder. The drains for the toilet and shower are not ideally placed, so we want to move them a few inches, ...
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Radon Fan - Low flow
I just installed a DIY radon mitigation system. I went with a Festa AMG Prowler fan. The system seems to be working great. The radon lowered from around 9 average in the worst room in the basement ...
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Radon Fan Getting Noisy & Other Questions
We are wrapping up a French drain installation, and our radon fan has been much noisier for the last day or so. The concrete has been poured over our new French drain piping, with the sump pump hole ...
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What is this black box on top of my radon fan?
I am in the process of replacing my RadonAway RP145 fan (15 years old).
What is this black box on top of the fan?
I cannot find any info about what it is used for and if that needs to be replaced too.
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Radon and moisture mitigation when joists are on dirt
In this house in a dry climate, the floor joists are directly on dirt, and the floor boards are just one layer (no subfloor). After 150 years, there is no rot, and there has of course been substantial ...
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605
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Access port to sealed-off sump pump with radon mitigation system
Clueless first time homeowner here. I purchased a home that has a sump with an attached radon mitigation system. The entire cover of the sump is sealed with caulk, so it's impossible to test if the ...
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1
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867
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Sump Pump Venting After Sealing for Radon
Apologies if this has been asked here before, my first time on the site coming from Reddit.
I just built a new house and know that the radon levels are high due to neighbors doing testing / the area ...
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276
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concrete sealant for radon
Radon is diffusing up from underlying soil/rocks through my basement's concrete slab.
What is an effective paint/spray application to stop this?
I see RadonSeal (sodium silicate) ads claiming to help ...
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How can I identify the purpose and terminal location of a PVC pipe from my basement slab?
Our house has a 3 inch PVC pipe running from the basement to an unknown location in the house. It has no T or Y junctions connecting into it. It does NOT go into the attic. The only pipe into the ...
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3
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616
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Are there home radon detectors that meet specific testing criteria? [closed]
This is just an overall question about home radon detectors. Where 10 years ago a topic like this might have seemed off topic (radon detection services sent specimen to labs - charcoal kits). It ...
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73
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Discontinuous footer?
During the installation of a radon mitigation system, the installers noted the area of the suction pit (not shown) didn't have a footer under the foundation wall. It seems that other parts of the slab ...
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1k
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Radon fan suction vs flow rate?
My house has a radon system (sub-slab depressurization) with two suction pits and 3" Schedule 40 piping installed by the previous owner. The system utilized a Festa AMG Legend and the manometer ...
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386
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Radon suction vs pressurization
Normal radon mitigation sucks out the air from underneath a house's foundation.
What if I ran the fan in reverse to blow this same air outward instead of sucking it upward?
It seems either direction ...
2
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3
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547
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Do I need to retain access to this pipe in my basement when building a shower? [closed]
I have a PVC pipe probably 4 in coming from basement floor and going to roof.
I am wondering if I need access for this. I am putting a bathroom and current plan was to put tiles shower on that wall. ...
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1
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How to install radon system with sump pit with no incoming drains
We have high radon levels (~10) and I would like to add a mitigation system. There is a sump pit in the basement, but there are no drains flowing into it (i.e. it's getting water directly from floor ...
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246
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mitigating radon in basement with joist & plywood floor
I bought a vacation home in the mountains and have found that it has a dangerous radon level (7.4pCi/L). The house has an 800 sq-ft unfinished basement, including a rough plywood floor over treated ...
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5
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Is there a way to color Radon to see where it enters and moves?
I'm trying to lower radon gas levels at home.
I currently have one Airthings Wave Plus device in one room and I'm waiting for a second one to triangulate radon sources, but I'm looking for another ...
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Radon system water leak in attic
In my attic there is (what I think is) the fan part of a radon mitigation system. There's a lip, and water pools there, then overflows and gets water in the attic.
It seems to be worse when it rains. ...
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1
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591
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Radon test results came back at 26 pCi/L, is it safe to use my basement?
My Radon Test Report just came back and it says that my basement has 26.2 pCi/L. The basement is where we exercise, so I'm wondering if it's safe to do so. I know the acceptable levels is dramatically ...
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2
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2k
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Radon fan has rhythmic woo-woooo-wo noise
We recently had a RadonAway 501C fan installed for sub slab depressurization in our 1923 Cape.
Our readings dropped immediately from 6 - 13 (average 9) to 0.3-1.5 (averaging 0.7)
We did expect that ...
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165
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Air-sealing basement slab weeping tile access for radon
I have a pretty high levels of radon in the basement (~400 Bq/m3 when windows are not open), so I want to seal obvious entry points, one of which is what looks like a 10 inch weeping tile cleanout ...
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1
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201
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Radon Levels Remain Elevated
I recently purchased a home. During the inspection there was measured radon levels of 6.3 PiC/L.
After having a professionally installed radon mitigation system, an electronic sensor indicates an ...
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3
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2k
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Loud thumping sounds coming from radon pipe
Our house had an existing radon pipe (passive) and high radon levels. We had a radon mitigation company assess the system. He installed a fan to the existing pipe. The fan is in the attic. Since the ...
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To mitigate radon, is a "positive" basement pressure possible during balancing?
Our basement has low-moderate radon levels, fluctuating typically between 1.5 - 4. We do have a subslab mitigation pipe, but it doesn't work great. For other air quality reasons, we decided to ...
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What are the pros and cons of getting a radon inspection before buying a home?
Discussion I have had with some of my partners. We understand what radon is, what causes it, how to mitigate it and the health effects it imposes. These are givens and a different question.
My ...
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3
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Causes of radon in the basement of a newer home?
We are in the process of (maybe) buying a home. It is a newer (2007) home in Northern Wisconsin with an insulated concrete form (ICF) basement in red clay. We just got the radon test back and the 2 ...
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58
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Is it correct for air to flow into home from under an addition?
I have seen multiple houses sitting on concrete basements or slabs where additions were added on to the house in the 1970s-80s and air flows directly from under the addition to inside the house. The ...
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1
answer
141
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Radon remediation in a part-time home
We have a second home that we use approximately 1 week/month year-round, and more in the summer. When we purchased the home in 2019, it was tested at 9pCi/L, and a remediation system was installed ...
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3
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393
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Should I be worried about radon while I live on the 9th floor?
I've recently heard of this threat to our health and I'm trying to educate myself on how to best protect myself and my family from it. I've been living for the past few years in a rented apartment in ...
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1
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386
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2-4 inch gap between crawlspace slab (floor) and surrounding wall - Why?
about a year ago I had my crawlspace conditioned. Among other things, the company put in a concrete slab for the floor and added a sump pump in the corner.
The strange thing is, there is a 1-4 inch ...
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How to Identify an Unknown or Poisonous Gas
Situation
My office has a meeting room that is located on the ground floor with inward facing windows towards the bottom of very small and stuffy open air interior. This area is surrounded by six ...
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4k
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Is it normal to have flooding in basement after radon mitigation system installed?
I have been experiencing flooding in my basement. I think the water is coming from the pipe installed in slab for radon mitigation. I don't believe the basement was flooding before (I just closed on ...
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2
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526
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slab heat pipes and radon reduction
My house has slab heat and the pipes come out of the dirt and go to the heating unit. This is located in my basement and I'm wondering how to seal it to help reduce radon entering the house.
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781
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Loud and HOT radon mitigation fan
I just got a Radon mitigation system installed and it is very loud, much louder than the AC unit that it sits next to (fan is installed outside). The housing of the fan after only a couple of hours ...
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Should I attempt to repair a leak in my radon mitigation system's pipework?
My radon evacuation system has been in place for about 10 years and it operating efficiently. However, the caulk that was used around the outdoor fan has deteriorated. When I cleaned up the area to ...
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4
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Why is my Radon level high even with passive ventilation in place?
We have about 6 PVC pipes with Aqua covers on them that were installed when we built our log cabin. We were told that they were for the Radon to escape.
We just had a 24-hr test done and the ...
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2
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Concrete vs suspended floor over vapor barrier
Our house has a sizable crawl space large enough to use as storage. The space has no slab covering it, but due to radon issues, it does have a vapor barrier to maintain a suction for the radon ...
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5
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Radon manometer shows negative pressure when off
I had a Radon mitigation system installed last week. When I turned on the fan it was all working great. A few days later the pressure level started to drop a little each day, until day 4 it was even. ...
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1
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Ice In Radon Mitigation System
I have a fan powered radon mitigation system installed in my house. It was installed in 2016 and I have not had any issues with it until this winter. I live in northern Iowa where we have been ...
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2
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483
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Radon in water mitigation
I need to install a Radon in water mitigation system. Is there a Do It Yourself way to do this with a simple aeration or filter system. I already have a pH adjustment system in my basement ( Calcium ...
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1
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2k
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Sump pump pit fill-in / Radon mitigation
I live in a partially below-ground finished basement of someone else's house. I have recently tested for radon and found the level to be elevated.
There is a 2-foot deep sump pump pit in the ...
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1
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550
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Which RadonAway fan is this?
I am replacing my RadonAway fan which has seemingly burnt out. However, the sticker on the current fan identifying the part number is self-contradictory:
It's marked as an RP265, but part number ...
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0
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1k
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Running 4" PVC pipe through foundation wall
I am installing a radon mitigation system and my plan is to go off of the sump pump (I bought one of those covers that seals it up good and lets you pass a PVC pipe though it).
The easiest thing to ...
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1
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1k
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Fill hole in slab beneath tub to reduce radon?
We recently discovered that our downstairs bathtub has a large hole in the slab beneath it where the tub drain and a few other pipes go into the dirt. We had a radon mitigation system put in a few ...
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886
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Radon fan with submersible pump. Is this normal?
New home owner here. When I bought my home, they did the radon test and found the levels high, so a radon fan was installed. I recently investigated the radon fan setup, and discovered that it seems ...
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How could the location of a radon abatement hole impact its effectiveness?
The radon level in my partially finished basement is from 8 to 11 pCi/L. I'm looking to have this installed professionally by contractors and the recommendation so far is to create the hole near the ...
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2k
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Has anyone heard of or have experience with a reverse pressure radon mitigation system for your home?
We purchased a home that had one installed during construction. I'm just wondering if people have had a positive experience with this type of system and can explain how it works. We just had a radon ...
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354
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Does this vent cap limit passive air flow?
I am looking at various vent covers for my house. I have a 3" Plumbing vent stack and a 4" Radon vent stack. The radon system is passive, which means I do rely on a chimney effect along with the ...
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2
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3k
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Can I cover these pipes in my basement floor with concrete?
I have a 18in by 18in area in my basement floor that is open dirt. The house is measuring high for radon so I need to seal this up as it is a major source for radon getting into the house.
There are ...
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Loud Radon System Noise
Our radon system is right under/outside our 6 month old's bedroom. Over the fall and winter I never heard it but now it is running a lot and it is very loud and it is affecting our daughter's sleeping....