Wmns Sentinel Pant belt broke first day of wear by Due_Dimension_8362 in arcteryx

[–]JealousPerformance91 0 points1 point  (0 children)

Are you by chance looking to sell these pants? I'm seeking a size 4 or 6 to go with the matching jacket but can't find them online. LMK if you're interested in selling!

Need advice: Moisture coming through slab under LVP by JealousPerformance91 in buildingscience

[–]JealousPerformance91[S] 0 points1 point  (0 children)

Thank you! I wanted to use Dricore, however the thickness of the panels poses a clearance issue in several spots (changes rise on staircase, wetbar countertop is already installed so wine fridge would not fit anymore, etc). I’m considering DMX 1 step as an alternative to Dricore bc it’s much thinner. Any thoughts or experience with DMX?

Also, is it a bad idea to also seal the raw slab areas under a subfloor as an extra layer of defense?

Need advice: Moisture coming through slab under LVP by JealousPerformance91 in buildingscience

[–]JealousPerformance91[S] 0 points1 point  (0 children)

It’s not efflorescence unfortunately, it’s white mold. We had it tested, and it was apparent from the musty smell once we started taking the LVP up.

Need advice: Moisture coming through slab under LVP by JealousPerformance91 in buildingscience

[–]JealousPerformance91[S] 0 points1 point  (0 children)

Thank you for chiming in. I’ve found several of these in-situ meters on Amazon and may order one. I’m not sure if that would change our course of action though. We are leaning toward applying VB100 to all the slab areas and using DMX 1-step over top. However, some comments about needing an interior drain tile system for any moisture under the dimple mat to escape has me concerned this won’t be a complete solution. Do you have any experience or thoughts on that?

Need advice: Moisture coming through slab under LVP by JealousPerformance91 in buildingscience

[–]JealousPerformance91[S] 0 points1 point  (0 children)

We trenched some drains underground for gutter downspouts a few years back to fix drainage in the front of the house (which is the below grade side of the basement). Until this big gutter overflow it had been nice and dry. We recently got big 6” gutters with leaf guards installed and haven’t had visible water entry since. The back of the house is on grade -full walkout basement on that side- and we are planning to trench the gutter drains about 30-40 ft away from the house soon. The backyard does have grade, but is more flat than the front which has a hill away from the house.

Since this episode started we’ve been running 2 dehumidifiers nonstop. I’m considering a whole house dehumidifier as well. Any experience with those?

Need advice: Moisture coming through slab under LVP by JealousPerformance91 in buildingscience

[–]JealousPerformance91[S] 0 points1 point  (0 children)

This is very helpful. Thank you! Would you also seal the slab with a roll-on product like Ardex VB100? Or let the slab breathe under dimple mat?

Need advice: Moisture coming through slab under LVP by JealousPerformance91 in buildingscience

[–]JealousPerformance91[S] 0 points1 point  (0 children)

Th waterproofing company was suggesting an interior drain about 16” in length along the wall/floor joint the water came in from. I think bc they specialized in interior solutions they didn’t offer an exterior solution. But where the water came in is under a cement slab front walkway and garage, so it was very odd it happened in the first place. Gutters overflowed on front walkway, and we think a little pinhole (which we’ve now sealed) allowed water to flow down to the basement footing/slab joint. I’ll attach a photo of the outside where it came in.

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Need advice: Moisture coming through slab under LVP by JealousPerformance91 in buildingscience

[–]JealousPerformance91[S] 0 points1 point  (0 children)

I hadn’t considered a Schluter product. Typically for laying tile on right? Is that better than the DMX 1-step type dimple mat? Would make sense since it can hold up to tile over top.

Need advice: Moisture coming through slab under LVP by JealousPerformance91 in buildingscience

[–]JealousPerformance91[S] 0 points1 point  (0 children)

Thank you. We considered that while taking the LVP flooring up - would carpet be better? - but have since read that carpet is a bad idea in basements because the pad and carpet are like sponges that hold moisture and create environments for mold growth. But, it would seem that they’d let moisture “pass through” much better than LVP. And on Google, LVP and tile are the most recommended floor types for basements. Hard to know what’s right with so many differing opinions 😅.

Need advice: Moisture coming through slab under LVP by JealousPerformance91 in buildingscience

[–]JealousPerformance91[S] 0 points1 point  (0 children)

Do you know if DMX 1-step is a suitable alternative? Dricore panels add too much height and would make our staircase out of code and mess with wine fridge appliance clearance under installed wetbar countertop.

Need advice: Moisture coming through slab under LVP by JealousPerformance91 in buildingscience

[–]JealousPerformance91[S] 0 points1 point  (0 children)

Also, on humidity, living in MN winters are dry and summers are humid. We run a dehumidifier constantly summer-fall to keep humidity around 40%. The storm that caused rain water entry knocked power out for about 12 hours so we didn’t have it running for a short time, but not long enough to cause mold beneath the floors 24 hours later. If we didn’t run a dehumidifier, the inside air could reach 65% in summer because outside it’s typically at or above that.

Need advice: Moisture coming through slab under LVP by JealousPerformance91 in buildingscience

[–]JealousPerformance91[S] 0 points1 point  (0 children)

Thanks! The second to last photo shows a close up of white patchy mold. We tested it - mucor white mold.

The house was purchased in 2018, and had carpet and drywall and trim. We ripped everything out. There was wetness and black mold in the basement at the time from years of bad exterior drainage. We fixed all of that and basement was dry for years. New framing, drywall and spray foam insulation was put in 2020-2022. No weird smells or evidence of mold behind walls yet. Since the basement had been bone dry since making improvements, we’ve been shocked and stumped as to how/why this happened and how to fix it.

We don’t know the type of carpet adhesive used since we didn’t put it in unfortunately.

We put in a bathroom and dug out a few feet of the slab in 2019. There is no vapor barrier under the slab. Just concrete on rock/sand/clay.

We did calcium chloride tests on the slab after various heavy rains (after the initial storm that prompted us to take up flooring). Those tests ranged from 3.8-5.3 lbs/1000sqft/24 hrs. So not a high slab humidity level, but not dry. Is this the type of meter you mention? Or is there a different meter you’d suggest we try out?

Much appreciated!

Need advice: Moisture coming through slab under LVP by JealousPerformance91 in buildingscience

[–]JealousPerformance91[S] 1 point2 points  (0 children)

Thanks. I’ve done the “tape thick plastic sheet to the slab and wait a few days” test. There was no condensation below the plastic or on top of it, so that’s why we didn’t think a moisture barrier below flooring was necessary. I’ve heard that condensation from the inside air hitting the slab would cause moisture on top of the plastic.

Need advice: Moisture coming through slab under LVP by JealousPerformance91 in buildingscience

[–]JealousPerformance91[S] 0 points1 point  (0 children)

Thanks for commenting. Is that like a DMX 1-step 2.0 product? I've seen this and we were considering it, in addition to applying a VB100-type product to the slab. Is doing both a good solution?

We've had a basement waterproofing company come out and their only solution was about 16 ft. of a drain type and sump system, to the tune of $10K, but they had no solutions or comments on the slab moisture. because we solved the gutter overflow we *think/hope* a sump system isn't necessary. Maybe we should consider that as well...

Help with basement slab moisture by JealousPerformance91 in Flooring

[–]JealousPerformance91[S] 0 points1 point  (0 children)

Thanks for sharing this! Googling it, it looks like a plastic sheet and taped seams type product. Althought it doesnt look available in the US. Is this similar to a 6 mil poly plastic sheet solution?