Ablemix Limited is a supplier of premixed concrete throughout the Midlands. They claim to have "everything you ever wanted to know about concrete but were too afraid to ask". With information on planning jobs, safety information, types of concrete and a technical glossary, I'd say they come pretty close!
Affordable Concrete Cutting (Boston) services the contractor and homeowner in and around Boston and Eastern Massachusetts. They specialize in cutting doorways in concrete foundations. Check out their website for information on the cutting process and some great photos of work-in-progress.
ARMA has lots of good information on using asphalt shingles for residential and commercial roofing. Lots of pictures and a great Q&A.
Cheng Concrete Exchange offers a full line of resources to help you design and build concrete countertops for your kitchen and bathroom. Created by Fu-Tung Cheng, author of bestseller book "Concrete Countertops" and the new "Concrete at Home".
Elite Concrete Restoration has been providing specialized concrete services since 1995. We cure spalling concrete and create custom decorative concrete surfaces to make your concrete surfaces beautiful and usable.
Emecole offers a broad line of epoxies, polyurethanes and polyureas to meet the needs of concrete repair pros and ambitious do-it-yourselfers. Their site also has a number of good articles on the tools and procedures involved in many concrete repair projects.
Historical Bricks is the nation's premier supplier of antique brick for residential, landscaping, and commercial projects. All products are shipped direct to your project, nationwide. They specialize in new constructions with an old world look as well as historic restoration projects. Custom brick matching is available.
Roadware Incorporated manufactures and markets high performance concrete repair materials. Roadware concrete repair products are used by thousands of businesses large and small to repair cracks and spalls within their facilities, as well as on highways and bridges. If you are in building maintenance and have use for this type of product, they have a lot of technical info on their products waiting to be downloaded!
Gardner-Gibson Asphalt Corporation supplies many types of driveway, roof, and foundation resorative products. One of their products, Rubberized Crack and Joint Filler, can also be use for concrete expansion joints. They supply information on the preparation for and application of all their products... so you can know up front the, shall we say, "effort level" of the project you are getting into!
Masonry Stone Builders is a company that specializes in masonry heating systems for the home. This alone makes a visit worthwhile. They also have a lengthy links directory, information on masonry ovens, and more.
Quikrete is a leading manufacturer of cement, concrete and related products for setting posts, repairing leaky basements and more. They have a great collection of do-it-yourself articles that alone make the site worth a bookmark!
WEBAC is an online source for products to repair, protect and waterproof concrete. They feature underwater epoxy paste, coatings to repair damaged concrete surfaces and polyurethane foam crack sealants. Though they specialize in commercial applications, many of their products are available to individual consumers and are difficult to find elsewhere!