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Found 94 results for the keyword ‘Concrete’

  • A portable re-bar bending tool

    Hitichi let me play with a prototype of a portable machine that will bend re-bar to any shape you want, with absolutely no effort. Expensive and used for heavy construction sites -- but a really nifty gadget. It is like playing with re-bar like they were paper clips.
  • A form for column footings, below ground

    "Big Foot" is a plastic form that you put in the bottom of the hole you dug for your support columns. You then set a Sono-tube on the top and pour in the concrete. The concrete will fill the form on the bottom (air holes let it flow) and give you a perfectly formed footing every time, without h...
  • What are "injection" repairs for concrete wall cracks?

    Gordon from Montreal writes: I want to seal a crack in my foundation myself using an injection system. I hear there are two types of injection materials and can I do it myself?-------- ReplyYou are right Gordon, the two primary materials used for injection into concrete wall cracks are epoxy and ...
  • Sealing a concrete roof

    Dartmouth, Nova Scotia is home to a peculiar house with a concrete roof. The roof is now leaking and Ron would like to know how to seal it.Many good coatings are available, but all of them will eventually need maintaining and may even develop leaks from weathering -- as has happened with the pre...
  • Myths and misconceptions about concrete and water

    A comment from a reader:"I notice in your section on self leveling concrete that you mention about needing to let the water out before putting anything on top of the new compound. (Self Leveling Concrete) This is a common misconception about concrete, in fact the water does not leave, it becomes ...
  • Preventing graffiti damage on walls.

    Graffiti is a major problem primarily for cities and schools, but even some homeowners have to deal with passing artists. There are now several graffiti removers on the market, but here we looked at a new graffiti inhibitor from a company called Wearlon.This is a transparent coating that simply ...