Burying My Downspouts With Schedule 40 PVC

September 12, 2025 1074708 Views

If you want to save yourself potentially thousands of dollars in foundation repairs and have a dry basement- do this one thing.
Bury your downspouts and pipe the water away from your house.
I’m using four-inch Schedule 40 PVC pipe.
I start with a thin-wall downspout adaptor like this; then I cement it into a 4-inch Schedule 40 coupler.
I’m using clear primer since these fittings will be visible above grade.
The purple primer is only required on jobs that get inspected.
The inspector can see the purple primer and know that primer was used on the job.
I’m making sure to slope the pipe away as I go- around ¼” per foot.
Everything was going really well till the New Guy decided to come out and check on my work.
Lately he’s been kind of critical- at first, he said I wasn’t using enough primer; then he said I was using too much primer.
The worst was when he got out his tiny level and tried to tell me I didn’t have enough slope on the pipe.
Honestly, I think he’s just bitter that I didn’t hire him with his new side hustle – “Pinky’s Plumbing”.
Let me know in the comments, do you think Schedule 40 was overkill for this job- or worth the cost? @hausplans

#build #howto #construction #downspouts #diy #contractor

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Real Estate
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