7 Key Tips to Keep Water Out of Your Basement

1. Clean rain gutters. Blocked gutters may cause roof water to pour directly into your home’s foundation, increasing the risk of basement flooding. Remove any debris, such as leaves or branches from the gutters and check the gutters for loose particles if you have asphalt roofing. Tighten any loose gutter straps and spout extensions. If there is gunk in the downspouts, clean them by pouring water into the downspouts with a garden hose.

2. Extend downspouts. To protect your basement from excess water, downspouts should extend at least five feet away from your house. This can be achieved by adding plastic or metal extensions to the downspouts. Alternatively, consider having an underground drain pipe installed. This system can send gutter run-off away from your house.

3. Slope the ground away from your foundation. Make sure that the ground next to your foundation slopes away from the foundation to divert rainwater away from your home. The “crown” of dirt around your house should slope at least six inches over the first 10 feet in all directions.

4. Seal gaps in the basement. Water may leak into your basement through gaps or cracks around plumbing pipes or cracks in concrete walls. Seal these gaps with polyurethane caulk or hydraulic cement. However, if water comes through the floor, sealing gaps won’t do the trick and you need to fix the groundwater problem.

5. Install a French drain. For serious water problems, install a curtain drain such as a French drain. This type of drainage system consists of a series of underground pipes that divert water away from your home’s foundation.

6. Waterproof interior basement walls. Condensation that forms on basement walls may be prevented by applying sealant on the walls. You can waterproof basement walls with concrete coatings, silicate-based concrete sealers, waterproofing paint or plastic sheets or panels. Alternatively, waterproof exterior walls of the basement to fix gaps in the foundation, although it’s a costly job that requires excavating around the house.

7. Install a sump pump. These devices provide protection against flooding by pumping out water that has accumulated in the sump basin. When the water level in the basement floor rises, the sump pump will automatically discharge the water outside your house. Learn how to choose a sump pump here and how to test a sump pump in this article.

Restoration Support from PuroClean of Princeton

Keeping water out of your basement starts with understanding where moisture enters and maintaining the systems that direct it away. If your property has been affected, explore our professional restoration services or contact PuroClean of Princeton at (609) 436-5959 to discuss the damage and next steps. For general guidance, see the IICRC’s professional cleaning and restoration standards.

A Practical Plan to Keep Water Out of Your Basement

Track when moisture appears and where it is most noticeable. Note whether it follows heavy rain, occurs near a plumbing fixture, or remains present during dry weather. Photographs and a short maintenance log can help a qualified contractor understand the pattern. Keep the records with information about past repairs and any pump or drainage system servicing. The right plan to keep water out of your basement depends on the source of the problem.

If water returns after a repair, ask the contractor to reassess the source rather than repeating the same temporary cleanup. Tell your restoration provider which materials were affected and whether moisture reached finished walls, flooring, or stored belongings. Keeping water out of your basement involves preventing new entry as well as drying existing damage. If the water may be contaminated or electrical equipment is affected, avoid contact and arrange professional assessment.

Build a Basement Maintenance Record

A simple record makes recurring moisture easier to discuss. Write down the date, recent weather, the location of any dampness, and the materials affected. Keep photographs of stains and previous repairs, along with contractor invoices and servicing information. Note any changes in stored belongings or finished areas that might make future water damage harder to detect. Share this history when requesting an inspection so the contractor has more context than a single snapshot.

Review Equipment and Drainage with Qualified Help

If your property uses a sump pump or other drainage equipment, keep the manufacturer’s instructions and arrange servicing as recommended for that system. Ask a qualified plumber or contractor about problems you have noticed, such as unusual noises, standing water, or unreliable operation. Avoid improvised electrical work or entering standing water around powered equipment. For exterior drainage concerns, describe where rainwater collects and discuss appropriate repairs with a professional familiar with the property.

Check Again After Weather and Repairs

After significant rain or a completed repair, revisit the locations where moisture was previously visible. Compare new observations with your earlier records. Look at accessible walls, floors, and stored materials without removing finishes or disturbing suspected contamination. If a stain changes or a musty smell persists, explain the difference to the contractor. Following up helps you assess whether the original issue has been addressed and whether further investigation is needed.

Separate Prevention from Damage Restoration

Stopping new water entry and restoring existing damage are related tasks, but they may involve different professionals and equipment. Discuss both needs when calling for help to keep water out of your basement and restore affected areas. Tell the restoration provider which materials became wet, when you first noticed the problem, and what repairs have already been arranged. Ask how the inspection, drying, and any necessary removal will be coordinated. Clear records and communication help the property owner, contractors, and insurer understand the next steps.