As a leader in Duct, Vent and Chimney Cleaning Armstrong provides solutions to residential and commercial clients. We operate with certified management and technicians. Our experience and success in the industry is a testimony to the commitment we have to our customers. We use the most advanced equipment available combined with proper training to achieve what we call "The Armstrong Difference". With over three decades in the duct, vent and chimney business. By adhering to the stringent guidelines set by the National Air Duct Cleaners Association (NADCA), Armstrong has become a NADCA Certified Company.

Concrete Plus is a decorative concrete supply store located in Manchester, NH. We carry a wide variety of concrete supplies suited for any size project. Shop online or in store for decorative concrete stamps, texturing tools, integral color, sealers, diamonds, concrete grinders and much more. We also carry the innovative NIVCOMP leveling system along with LevelPegs. Concrete Plus is a one stop shop for all of your decorative concrete needs. We have over 15 years in the decorative concrete industry and an unrivaled passion for what we do. At Concrete Plus you can find quality products along with unmatched expertise. Whether you are a professional working on a large polished concrete floor or a homeowner looking to repair a crack, we are here to offer tips and answer any questions you may have. Stop in or give us a call!

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TCI manufactures high performance PTFE films, fabrics and laminate products for many different industries. Using a proprietary, all-PTFE CrossFilm™ material, TCI provides material solutions that are unaffected by exposure to chemical environments. Because of excellent non-porosity traits, tremendous flexing and tear-resistance properties, and welding ability, CrossFilm barrier materials provide very unique solutions for industrial, chemical, military, and numerous other industries. TCI manufactures all of these products in the United States utilizing technologies that are covered by trade secrets and patents. These materials are then further fabricated into ducting, belting, covers, and other specific components either by TCI or our customers.

New Image Coatings manufactures the Seal-Once brand of non-toxic, eco-friendly Zero voc waterproofing sealers for all wood, composite decking, concrete and masonry surfaces. They contain no solvents, petroleum distillates, harmful chemicals, penetrates deep into wood, UV stable, protects against mold and mildew stains, cracking, splitting and warping. They will not harm fish, plants, pets or livestock, not harmful to people or the environment, eliminating many health and safety hazards associated with other products. Once applied, they can be stained or painted increasing the life of top coats. We guarantee the product for 6 years on horizontal surfaces and 10 years on vertical surfaces. Marine grade and industrial multi-surface formulas are available. Semi-transparent tints are available with excellent UV protection. Endorsed by NH DES and is GreenSpec™ Listed. Our eco-friendly cleaners for wood and masonry complement the waterproof sealers and come with a 100% Money-Back Warranty. Marine and Industrial grades are available. Private labelling is available.