– Sparkle Window Cleaning is a family owned and operated business. For over 25 years John and Thomas Lynch have been providing the finest window cleaning service on Long Island. We have no outsider partners and never operate under any other names. We are always on the job site, our entire staff consists of highly skilled professionals, never seasonal workers. Our reputation of having the most dependable and reliable service means everything to us, and thats what you will get every time we come to your door. For more details visit