Questions tagged [drainage]

Use this tag when the topic is about controlling water runoff, particularly near structures but also in yards or elsewhere.

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2answers
186 views

What pipe diameter, for gravity drain of a given impermeable area?

How do I calculate a sufficient pipe diameter, for handling a given amount of impermeable pavement? A general answer is best. In my particular case I have approximately 675 square feet of tile roof ...
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0answers
379 views

Pouring drainage channel right next to foundation, how to protect the foundation?

Ugh. How can I arrange details on this concrete pour, to not damage the foundation later? This is San Francisco Bay area (no freezing). The visible clay pipe is a high volume gravity drain from the ...
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1answer
623 views

Correct drainage setup for a wall-mounted AC?

I have a wall-mounted AC unit. Specifically, a Fujitsu ASTG24LFCB. Recently water started leaking from the interior portion of the unit. I followed the instructions in this video to troubleshoot ...
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2answers
285 views

Garbage disposal not turning on with on/off switch. Water in sink draining in dishwasher. [closed]

My garbage disposal is not coming on and water from the sink is draining in the dishwasher. Do I need an electrician?
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2answers
154 views

What is this, and I can pump my dehumidifier water into it?

We got a dehumidifier with a water pump recently and I'm just now looking for a place to drain the water. What about using this p trap in the middle of this pic: I believe that brown rubber hose is ...
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3answers
177 views

Solving active sump issues

We bought our 20 year old house in Fishers, IN (northeast Indy suburb) this past summer. Three days after moving in, we had the last of the bad summer storms. One of the pumps in our Triple Safe sump ...
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1answer
115 views

How To Identify/Fix Source Of External Water

My house is leaking! It's hard to see but if I angle the camera just right, these small droplets of moisture become visible. This is from an East-facing external bedroom wall taken during a pretty ...
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3answers
76 views

How to manage water pooling at a particular spot in my lawn?

Per the picture, I have an interesting draining issue where some rain water will drain along my roof's edge to a spot on my lawn. Problem is that the water is pooling in heavier rains (see picture ...
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2answers
106 views

Do I have drainage issues?

I am looking at buying a home and the yard is a down slope to the road in the front and flat on the sides and in the back. The house was built in 1999 and had to have the driveway replaced in 2014. ...
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1answer
352 views

Drainage on side of new driveway

A bit of a two-part question. I had a new driveway put in this week. The sides of the driveway are exposed still after the forms were removed and I wonder whether I need to rush to fill that in so ...
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2answers
330 views

Best way to drain water away from house?

When we get rain the water flows off the cement slabs and drains into the space between the pavers. This is a small amount of water, but enough that a leak has formed in the basement. We are taking ...
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1answer
554 views

Standing water in front of retaining wall okay for wall?

I built a retaining wall this past summer, and put the proper drainage behind the wall. Due to time, I never got around to handling drainage in front of the wall and in between the pool. The ...
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2answers
314 views

Slope of decking and foundation

I'm having decking installed and the boards currently slope towards the house. The underneath of the decking is soil and there is no gutter alongside the house to funnel the water to the drain. Is ...
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1answer
374 views

Does my vanity's sink need to be offset from the bottom-exit drain pipe?

I am installing a new sink/vanity in a older house. The drain pipe for the sink is down through the floor (as is the water supply lines) and not in the wall. When I position the new vanity, do I need ...
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4answers
338 views

why river stones needed close to foundation

I often observe that some houses have a strip of lawn adjacent to the foundation removed, and replaced with pebbles, river stone or alike. I understand this does not serve only decorative purpose. ...
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1answer
1k views

How to remove hydrostatic pressure from basement floor so we can finish part of the basement?

We purchased a 3000 square foot ranch that was built in 1977. We would like to finish about 1000 sf of the basement. It has poured concrete walls and a concrete floor. Currently, we have two sump ...
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5answers
5k views

What's the best strategy to reduce moisture in this garage?

First of all, I know this garage will never be dry. It's a standalone, one car garage built into the side of the hill that my house sits on. It abuts the neighbor's yard, and they have landscaping and ...
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1answer
1k views

Plastic sheeting in a french drain system

I am installing a french drain along the foundation of a residence. I have always place thick plastic sheeting (6mil) up against the trench on the foundation side and on the bottom of the trench. ...
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0answers
143 views

How to determine which size of auger to get for backed up basement floor drain?

My basement floor drain is backing up water (~10L) when washer is dispensing water during the spin cycle. It's an older house at 1955. The drain looks like it has a p-trap. I wonder how can I ...
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0answers
124 views

My shower doesn't drain well in the first few minutes

When I take a shower the water doesn't drain well in the first few minutes. After about three to five minutes there's a few bubbling sounds from other drains, and then the shower drain works perfectly ...
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2answers
112 views

How can I get my sink's trap to fit around the rest of the drain assembly?

I'm in the process of adding a new bathroom to my house. I had a plumber rough in some connections for us, and then we are in the process of finishing it off. We used plastic accordion pipe to ...
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0answers
108 views

Can I build a concave mortared-stone sidewalk that will also act as a drainage flume?

I recently had a landscaping company install a mortared-stone drainage flume on the interior of a retaining wall at my house: It looks great and works just as well. It naturally has me wondering ... ...
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1answer
69 views

Should I install gutters before addressing draining in the yard?

My house doesn't have gutters or downspouts, so I'm planning to install them. Parts of the yard also remain wet for days after a rain, so I'm planning to install some kind of drain system in the yard (...
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1answer
268 views

How do I unclog my AC drainage line

I live in a condo with an in-home AC/heat pump. This morning we noticed that it was dripping water, and when we took off the front panel we could see standing water in the run-off tray. It was pretty ...
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1answer
258 views

Sealing crawl space vents in Pacific Northwest?

I just had a perimeter drain and sump pump installed in our crawlspace because it flooded frequently and severely during the rainy seasons. Before, I was under the impression that leaving the ...
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5answers
674 views

How should I cover this drainage garden pit in my front yard?

We just bought a newly constructed house. In front of it is a rectangular concrete pit, maybe 2–3 feet deep and roughly 8 feet long by 5 feet wide, with dirt at the bottom and several shrubs planted ...
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0answers
42 views

Is there a sealant I can use on concrete grouting with concrete pipes?

The driveway at our new house crosses over a creek, which requires 3 concrete culverts, about 16' long and 30" in diameter. The culverts are each made of two pipes with a joint in the middle. ...
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3answers
72 views

Making a small drain/vent/hole in a glass box

I've got a glass box that measures 900mm x 450mm x 450mm. The width of the glass is about 6mm thick. If I drill, cut, or grind a small hole in/through one of the faces; will it significantly ...
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1answer
2k views

Can I “just” concrete over the existing gravel in this carport?

Based on this annotated image, can I reasonably pour concrete over the existing gravel in this carport area? If no, would it be enough to add another 1-2 inches of fresh gravel first? Some details. I'...
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0answers
68 views

Drainage pipe in ground

I just discovered that my 2 inch PVC drainage pipe output was buried at about 6 inches below my front lawn. I tried to make a makeshift 1 inch trench to help the water flow out. The problem is that my ...
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1answer
224 views

Shoring up drainage culvert slope

I just bought a new house, and the drainage culvert out front along the road has several areas where the slope has collapsed, resulting in what looks like a miniature landslide landscape. What is the ...
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1answer
617 views

How do I divert rain water off of property?

My upper back yard sits on a slight hill. When it rains, water forms in holes like springs, and water continues to run down my driveway days after it has stop raining. I just had a new driveway ...
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1answer
147 views

More backyard drainage problems.

I have a steep tree and grass covered back yard where rain water flows down during storms. This exits through the garage but is causing soil erosion. I too would like to know what sort of ...
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3answers
113 views

Sump pump size and reliabilty for crawlspace

Still trying to sort out the different advice from crawlspace drainage vendors. The least expensive fellow insists a single 1/3 HP pump pumps out plenty of volume, and that only a single pump is ...
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1answer
376 views

French Drain placement question

I am installing a French drain around the back side of my house to help protect the perimeter foundation. I have a 31'X 36' patio butted up against part of the foundation. Should I also install the ...
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2answers
371 views

How can I rig a battery backed-up sump pump for an exterior pit?

I have an exterior sump pit which gets all the water from my downspouts and french drains and pumps it out to a rain tank and overflow into a leeching field. Because of where the pit is, if the pump ...
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0answers
34 views

outbuilding drain into dry well

Aside from code differences between jurisdictions, is it acceptable to tie an outbuilding floor drain into a dry well drainage system? The outbuilding does not have a water supply, the slope of the ...
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0answers
83 views

Is soil in an open rock spoon drain a blocker? Think we've got a cowboy job done

Being on a slope, our place has a lot of problems with surface water flooding. We've had a spoon drain installed along our upper boundary to redirect surface water away from the house. Here's a pic ...
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0answers
963 views

Where to lead french drain end in backyard, cookie cutter neighborhood

I am going to install a french drain to alleviate some of the soggy muddy areas after rain. First, my backyard slopes and graded to drain to the rear left of backyard. There is a small valley to ...
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1answer
646 views

Can I route a drain pipe under a gas line?

I want to reroute an outdoor drain pipe (rain water) to a better location but there is a gas line that is in the path that the drain pipe needs to go. Can I route the pipe below the gas line? I'm open ...
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3answers
1k views

Will internal waterproofing solve my moisture problems?

We've been working on our water problem for awhile now. Here's the deal: There is black drain tile under the home (all the way around) tied into a sump crock. Water was only coming in one side. A ...
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2answers
1k views

What does airflow in the sump pit mean?

I have a sump pit in my basement with a pipe that comes from the drain tile. The drain tile does not see day light anywhere, it's all near the footings of the foundation. I can feel a strong flow of ...
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1answer
138 views

Is a conventional interior drain tile system likely to silt up over time?

Three companies have proposed the same solution, more or less, to address pretty bad flooding in our crawlspace: Dig a trench around the interior perimeter and install a perforated pipe that leads to ...
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2answers
1k views

Should an underground drainage pipe be perforated?

If I want to install a long (30ft+) drainage pipe underground for my sump discharge, should the pipe be perforated or solid? The pipe will flow down and out into a creek. This is in a region that has ...
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3answers
4k views

air trapped in sink drain?

A modest sized object had fallen into my bathroom sink causing (I assume) the sink to drain slowly. That is, at first (after dropping the item) the sink seemed to drain fine but eventually it slowed ...
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1answer
2k views

Water Drainage Towards Neighbor's House

We are in the process of purchasing a home in Washington State. We receive a lot of rain and the backyard lawn always seems kind of soggy/standing water. I've looked into a french drain and it seems ...
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1answer
559 views

Sealing what appears to be a non standard overflow drain

I have an overflow drain, as seen in the picture provided, that isn't sealed. The common wisdom I've read online has been to seal with a gasket, but my drain doesn't seem to be anything like the ones ...
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2answers
2k views

New home grading in backyard soil stays muddy for days

I have a new construction home and the backyard grade needed adjustment late in fall. There is an area that meets in the middle that doesn't really hold static water above, but the ground stays soft ...
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0answers
41 views

Changing drainage from washing machine

I have a new build house that has a drainage on the side of the house as shown in this video: https://www.youtube.com/watch?v=BU_-fnvqCOI I want to change this so that it does not drain on the side ...
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2answers
2k views

Do I need to suplimentary seal the joint between pavers and patio edge when that joint is used as a drain channel?

Initially I was looking for this: I was told that distributors do not sell this anymore because it is unsafe (tripping hazard). I am thinking about using the joint between my pavers and my edge to ...