Client Testimonials The following are some unsolicited comments from our clients. Your crew was as professional as I've seen.  My house was left in perfect condition and I will gladly refer Delong Services to all. J. Pruitt - Dallas, TX After my second slab leak, I was worried I would have another at any time. Your NUFLOW product and the  10 year transferrable warranty made it possible to sell my house with  confidence the buyer would have no more leaks. Thanks to Delong Services. L. Tice - Dallas, TX Thanks to Delong Services we didn't  have to tear up our floors and walls to repair our hot water slab leak.  No mess, no hassle, and we got a much better warranty. Congratulations on a great product! M. Braswell - Rowlett, TX I have already referred you to our local plumbing companies. Your crew was great and the NUFLOW process was outstanding!  Use me as a referral anytime. K. McCool - Gainesville, TX