French Drain Installation and Yard Drainage Solutions
Serving Princeton & Surrounding Areas
What Is a French Drain and How It Works
Perforated piping, gravel, and slope to move water
A French drain is a subsurface trench that captures and redirects water before it can saturate soil or press against your foundation. It uses a perforated pipe encased in washed gravel and wrapped in geotextile fabric to filter sediment while maintaining flow. Installed with a calculated slope, the system relieves hydrostatic pressure, intercepts groundwater, and moves runoff to a safe discharge point such as daylight, a pop-up emitter, a dry well, or a sump discharge line.
Key design elements include proper grading, pipe sizing, filtration, and outlet selection. The slope is critical—typically 1% or greater—to keep water moving. Non-woven geotextile helps prevent clogs, while clean, angular gravel maintains void space around the pipe. Options include rigid PVC or corrugated HDPE pipe, plus cleanouts for maintenance. When paired with surface grading, downspout management, and catch basins, a French drain provides a robust, long-term drainage solution.
Symptoms of poor drainage and risks
Telltale signs include standing water that lingers 24–48 hours after rain, mushy turf, puddles along walkways, and water tracking toward or into the foundation. Indoors, you may notice dampness in basements or crawlspaces, musty odors, or frequent sump pump cycling. Outside, look for erosion ruts, mulch washout, plant stress from root rot, and heaving or settling of patios and paths.
Left unaddressed, excess moisture can undermine footings, degrade concrete and masonry, warp flooring, and foster mold growth. A properly designed French drain intercepts and redirects water, stabilizes soils, and protects structures and landscapes. Professional installation prevents common DIY pitfalls like insufficient slope, no fabric filtration, undersized outlets, or placing the pipe too shallow, all of which can shorten system life or reduce performance.
Assessment, design, materials, and workmanship
We begin with a comprehensive site assessment: mapping water paths, checking elevations with laser levels, soil texture and percolation checks, and locating utilities. We evaluate grading, roof runoff volumes, hardscape drainage, and tie-in options. Based on flow estimates and elevation constraints, we design a route with trench depths typically 12–24 inches (deeper near foundations), widths of 6–12 inches, and a consistent 1–2% slope. If required, we assist with permits or HOA documentation when connecting to approved discharge points.
We specify non-woven geotextile fabric, washed angular gravel (commonly 3/4 inch), and 4-inch perforated pipe for most applications, with 6-inch pipe for high-flow areas. Cleanouts are added at direction changes and intervals for serviceability. Discharge options include daylight outlets, pop-up emitters, dry wells, or integration with a sump line. We can incorporate catch basins, downspout connections, and root barriers to protect performance and longevity.
During installation, we protect existing landscaping and irrigation, excavate clean trenches, and set the gravel bed to grade before placing the pipe and wrapping with fabric. After backfilling and surface restoration (sod, seed, or hardscape reset), we test flow and review the system with you. Typical projects take 1–3 days depending on scope. We provide maintenance guidance—keep inlets clear and visually check outlets—and stand behind our work with clear warranties.


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Ahmed2025-08-13Trustindex verifies that the original source of the review is Google. I had a fantastic experience with Jay’s Irrigation. Jay was professional, prompt, and friendly from start to finish. He quickly diagnosed the issue with my system, explained the solution clearly, and had everything working perfectly in no time. His attention to detail was excellent, and he left everything neat and tidy. I highly recommend Jay if you’re looking for reliable, honest, and knowledgeable irrigation service. Sarah Stroud Li2025-06-29Trustindex verifies that the original source of the review is Google. Had a really positive experience with this team today. We just got new grass put in partially because our existing sprinkler systems were not working. Jays Techs came out the next day (on a Sunday morning) and quickly identified the issues and replaced multiple sprinkler heads. We have a large yard and they were done in about 30 minutes which was awesome. Daniel Robinson2025-06-24Trustindex verifies that the original source of the review is Google. Very responsive & respectful. I reached out when I needed a new controller installed & the sprinkler system at my new house inspected. He quoted me a fair price & found some damage I wasn’t even aware of. Everything was repaired the same day & he fully communicated with me throughout the process. I hope I don’t need any more sprinkler repairs, but if I do, I will for sure be calling Jay & his team out. Tiffany Sims2025-06-14Trustindex verifies that the original source of the review is Google. Jay is knowledgeable and great at what he does! He was able to complete some needed repairs for the sale of my home quickly and efficiently. His pricing is fair and he makes sure the work is complete to satisfaction. I would definitely use this company again if ever in need! Jason Andrade2025-06-09Trustindex verifies that the original source of the review is Google. Jay was great simply the best irrigation tech I’ve ever dealt with. Also wonderful customer service and straight to the point. Highly recommend them. Deborah Chase2025-05-22Trustindex verifies that the original source of the review is Google. Jay and his crew were great. Updated my irrigation system and repaired a leak. Explained it all to me. Would highly recommend. Great company and Cary Hodson2025-05-22Trustindex verifies that the original source of the review is Google. Jay’s Irrigation Techs are the real deal! Jay truly cares about his customers and takes pride in his work. Not only are they irrigation and sprinkler pros, but I also had them handle some landscaping for me—including a walking path, gravel work, and new sod. The whole project turned out great! Reliable, professional, and easy to work with. Highly recommend! Nimesh Patel2025-02-06Trustindex verifies that the original source of the review is Google. Jason and his team are great!! Fixed my sprinkler system and gave reccs on something's to do to improve watering of my plants and lawn. Had a recurrent leak and Jason came back quickly to fix it. His team is honest and great to work with. MaryAnna Walker2025-01-26Trustindex verifies that the original source of the review is Google. I have a zero lot line property that had some drainage issues, and Jayson was a creative problems solver. He is friendly and professional, and he guarantees his work. Highly recommend.

Local Service You Can Trust
Fast scheduling, clear pricing, lasting results
Clay-heavy soils and seasonal downpours in Princeton often lead to persistent surface saturation and foundation pressure. Jays Irrigation Techs designs French drains tuned to Princeton rainfall patterns, grading norms, and lot layouts to move water efficiently and safely away from your structures.
From free assessments to itemized proposals, we make the process straightforward for Princeton homeowners. Our team schedules quickly, coordinates utility locates, and manages any approvals common in Princeton neighborhoods, keeping job sites clean and communication clear from start to finish.
If pooling water is limiting your yard, choose Jays Irrigation Techs for proven French drain installation in Princeton. Contact us to book an on-site evaluation and receive a tailored plan that protects your home and adds lasting value in Princeton.
Ahmed2025-08-13Trustindex verifies that the original source of the review is Google. I had a fantastic experience with Jay’s Irrigation. Jay was professional, prompt, and friendly from start to finish. He quickly diagnosed the issue with my system, explained the solution clearly, and had everything working perfectly in no time. His attention to detail was excellent, and he left everything neat and tidy. I highly recommend Jay if you’re looking for reliable, honest, and knowledgeable irrigation service. Sarah Stroud Li2025-06-29Trustindex verifies that the original source of the review is Google. Had a really positive experience with this team today. We just got new grass put in partially because our existing sprinkler systems were not working. Jays Techs came out the next day (on a Sunday morning) and quickly identified the issues and replaced multiple sprinkler heads. We have a large yard and they were done in about 30 minutes which was awesome. Daniel Robinson2025-06-24Trustindex verifies that the original source of the review is Google. Very responsive & respectful. I reached out when I needed a new controller installed & the sprinkler system at my new house inspected. He quoted me a fair price & found some damage I wasn’t even aware of. Everything was repaired the same day & he fully communicated with me throughout the process. I hope I don’t need any more sprinkler repairs, but if I do, I will for sure be calling Jay & his team out. Tiffany Sims2025-06-14Trustindex verifies that the original source of the review is Google. Jay is knowledgeable and great at what he does! He was able to complete some needed repairs for the sale of my home quickly and efficiently. His pricing is fair and he makes sure the work is complete to satisfaction. I would definitely use this company again if ever in need! Jason Andrade2025-06-09Trustindex verifies that the original source of the review is Google. Jay was great simply the best irrigation tech I’ve ever dealt with. Also wonderful customer service and straight to the point. Highly recommend them. Deborah Chase2025-05-22Trustindex verifies that the original source of the review is Google. Jay and his crew were great. Updated my irrigation system and repaired a leak. Explained it all to me. Would highly recommend. Great company and Cary Hodson2025-05-22Trustindex verifies that the original source of the review is Google. Jay’s Irrigation Techs are the real deal! Jay truly cares about his customers and takes pride in his work. Not only are they irrigation and sprinkler pros, but I also had them handle some landscaping for me—including a walking path, gravel work, and new sod. The whole project turned out great! Reliable, professional, and easy to work with. Highly recommend! Nimesh Patel2025-02-06Trustindex verifies that the original source of the review is Google. Jason and his team are great!! Fixed my sprinkler system and gave reccs on something's to do to improve watering of my plants and lawn. Had a recurrent leak and Jason came back quickly to fix it. His team is honest and great to work with. MaryAnna Walker2025-01-26Trustindex verifies that the original source of the review is Google. I have a zero lot line property that had some drainage issues, and Jayson was a creative problems solver. He is friendly and professional, and he guarantees his work. Highly recommend.
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