Interior Drainage system

How do you comment on this interior type of drainage, i do not think it is good. but it seems like people commonly do it, maybe as a cheaper repair to a water problem.

Just wanted to get the appropriate disclaimer for this item. See the attached diagram for example.

The basement i looked at today, had this system tied to a sump pump (that ran a few times as i was there) and it is about 2 degrees F where i am at. Don’t think it should be running at all?

You can still get water moving through soil below the frostline.

yes i agree. just strange letting that water inside all year, instead of correcting the problem out side.

I am not a lover of this way of removing the water .
I have seen blocks decay from these systems .
Remember water is the strongest solvent in the world .
Just look at the grand canyon this happened one drop at a time

Roy what would you suggest i tell them then?

This is what i currently have in my report “Sump pump connected to interior drain system. Interior drains can have issues while continuous water in your basement can also cause issues related to excess moisture. I recommend further investigation or correction by a qualified licensed contractor or water infiltration specialist.”

I have not sent it yet, just getting feedback before i do.

Thanks, Ryan

These type of systems do remove the water but you could still have a humidity concern .
I would recommend you constantly run a automatic dehumidifier hooked up to a drain via a hose to help control the moisture in the home
I understand blocks can decay from these systems .
Remember water is the strongest solvent in the world .
Just look at the grand canyon this happened one drop at a time .

Talk soft write hard miss nothing .

You can still have soil supporting the structure affected too.

…‘It seems like people commonly do it, maybe as a cheaper repair to a water problem’

In my honest opinion, they commonly do it because, it’s the ONLY thing they do, they only install interior systems. And that is most often due to…the incompetence of these interior system companies or it’s cheaper for these companies to install these systems aka, THEY make MORE money installing them versus exterior waterproofing where it is more labor and more cost in materials needed.

And more often than not, inside system co’s will charge MORE for their bubblehead interior system than what it would have cost to fix the actual problem(s) on the outside.

Most who have block basement walls and leak/get water in basement is due to 1 or more exterior cracks, cracked exterior parging, no parging etc hence no interior system repairs this sht, no interior system stops water that will continue to enter. (it can, at best, only divert the water that continues to enter)

That’s why many interior system companies will often place/attach some sort of paneling etc against part or most of the interior basement wall. This will hide any sign of water entering, cracks in wall, mold or efflorescence on wall or possibly, some deteriorating blocks as in photo here…
See? And some will apply some ‘mud’ over these deteriorating blocks on the inside beore they cover part-most of wall. THAT obviously doesn’t stop FURTHER deterioration of those blocks, nope.
Would you say that (photo) is a DEFECT?

Sorry so long, just trying to be somewhat…thorough, as there is a lot of bs, myths, bogus-false claims etc on this subject.

Sometimes for those who have leaky basement and block walls, they may NOT see any INTERIOR crack(s) on inside wall(s). That does not at all mean there isn’t 1 or more exterior cracks, cracked parging etc on the outside of block walls, no.
THIS is what I mean…block basement wall, NO visible cracks on INSIDE wall but, what do you see on the outside? Any ‘defects’??? :wink:

Before replying to you, wanted to see where your from, eventually I clicked your website info to find out…MN.
Took a quick gander and read, ‘The inspectors ability to find defects is most important’. And that’s fine, cool man, plz don’t take/get me wrong.

One point though is, there can most certainly be existing defects on exterior of block, brick basement walls that a home inspector etc is not going to see, know about hence will not be able to inform their client aka homeowner about.

I know I know ;-), home inspectors aren’t going to, not suppose to, tear off interior paneling or drywall etc in order to be able to find/see possible defects, cracks in basements wall, mold etc on wall. And again, even when one can see the inside walls, THAT doesn’t mean there aren’t exterior cracks etc.

Lolol, I guess part of my point is, while the HI just trying to do their job, and most Nachi inspectors do it well :wink: , it doesn’t mean ALL is being done for their client in these situations as you posted about…homeowner has interior system, doesn’t at all mean there aren’t exterior defects and doesn’t at all mean their leaky basement problem was fixed CORRECTLY.

In, around MN area, did a quick search on basement waterproofing companies and all I found were interior bubbleheads. Of course that doesn’t mean there aren’t 1 ore more good, experienced exterior contractors there, just saying, like everywhere else there are mostly of only interior system turds, which is why lolol there’s an interior system installed at place you inspected.

Here’s many EXISTING exterior defects imo lolol…
existing defects that homeowners/buyers would what to KNOW ABOUT

Not sure how YOU good nachi inspectors should word your reports to homeowners, I just know here is MI there are many HI’s who don’t say, inform homeowners/buyers of squat and who actually tell them that an interior system is fine, is best etc etc and that is a BUNCH of buslhtt, incompetence! (no lol not any nachi hi’s I’ve seen yet, I mean the NON nachi members, the unlicensed or just totally inept ones)

Let me ask, are any of the walls covered, drywall etc?
Is that inside system a PARTIAL system or does it go all the way aroind interior perimeter?

Bud Light salutes you, Mr. Supermarket Deli Meat Slicer (just you and your salami!)

“Interior drain system was noted in the basement area at the time of inspection. It is important to monitor all componnents and alarms that the system has in place to ensure that they are working properly. Recommend inquiring about any or all guarantees/warranties that may apply to the system. All basements, including homes with these types of systems should be considered wet. Further, these systems include componets that have a rate of failure that is unpredictable. It is not recommended that you add finishes in the basement area when these systems or sump pumps are present.” Something to that effect. Feel free to add or subtract.

Left out: It is important to manage all exterior drainage (gutters, drains, ditches, etc) away from the foundation and structure.

Maybe redundant but very important so…
An interior drainage system previously installed here, still leaks, more mold and efflorescence on blocks and some cracks widening since/after the dumb az interior system was installed
Interior system did NOT address, fix ANY of the actual problems. Out over $15,000 and exterior work still needed and should have been done in the first place.

First 6 photos here, an interior drainage system was installed.
Hmmm, why did buyer call my dumb az over?
Because water is STILL entering. The interior system, the company did not stop the water from where its still entering hence, MORE mold, efflorescence etc.

Another interior drainage system installed here, still leaked, more mold etc and some cracks widening.

Another installed here, still leaks, more mold etc and wall is bowing in. Interior drainage systems do NOT stop water from entering where most peoples actual problems are, exterior cracks etc.
Had the inside system company been someone like my azz then, it would have been hand dug, waterproofed correctly on the outside, would have saved them $$$$$. So, still needs to be done on the outside lolol

Have more photos of same incompetent crap if ya’s like. lol

Here’s an interior system company who bs’d another homeowner, the crap he says about efflorescence etc is…total crap!

Just like, Nachi’s Mr Macy and others explained it pretty good.

The problems are on the outside, the interior drainage system, as usual, does not, has not stopped further water intrusion etc. Exterior still needs to be done, correctly.

One of my points is, if and when a home inspector (or realtor etc) tells a homeowner who is interested in buying a house that has an interior drainage system that, the interior system is fine, its ok, no future problems etc, then imo they may (and should) lose their inspection fee and quite likely will not be referred by the homeowner and who knows what else.
Seen this happen all too often here in MI.