A J Waterproofing

What They Do

Water DamageMold

• Repair flooring
• Basement Drain
• Basement Flooding Repair
• Basement Leak Repairs
• Basement Walls
• Basement Waterproofing
• Commercial Property
• Concrete Pillars
• Crack Sealing
• Crawl Space Waterproofing
• Drain Repairs
• Drain Replacement
• Drain Solutions
• Emergency Services Available
• Exterior Waterproofing
• Foundation Waterproofing Services
• French Drain Installations
• French Drain System
• Pouring Concrete
• Residential And Commercial
• Storm Drain
• Storm Drainage
• Stormwater Drainage
• Sump Pump Installation
• Sump Pump Maintenance
• Sump Pump Repairs
• Sump Pump Replacement
• Tidying Up

Before You Call A J Waterproofing

1. Do you take moisture readings every day and will you give me the drying log?
2. Are your technicians certified in water damage restoration?
3. Where do you think the moisture is coming from, and who fixes it?
4. Will you set up containment and negative air, and how will you protect the rest of the home?

In Pennsylvania ask for the contractor’s state home improvement registration number, and in Philadelphia also ask for the city contractor license. Also ask for proof of insurance and industry certification for the technicians.

They list no storefront. Ask where the business is based and whether the crew is their own.

How Their Reviews Break Down

Counts from public listings as of September 23, 2026. A handful of reviews says less than a few hundred.

Read This While You Wait

• DIY with careWhat to Do in the First 24 Hours After Water DamageAn hour by hour plan for the first day after water damage. Make it safe, stop the source, document, remove water and start drying before mold can start.
• DIY with careSafe DIY Mold Cleanup for Areas Under 10 Square FeetA step by step method to clean up mold under 10 square feet safely, with the gear to buy, what to throw away, why bleach is not the default, and when to stop.
• DIY friendlyWasher, Dishwasher, Fridge and Toilet Supply Line LeaksHow washer hoses, dishwasher lines, ice maker tubing and toilet supply lines fail, how to clean up each kind of leak, and how to replace a line yourself.
• DIY with careAttic Mold on Roof Sheathing, Causes and FixesWhy mold grows on attic roof sheathing, how to find the cause, the fixes that stop it for good, and how to tell a cosmetic stain from a roof that needs work.