Additions

by Larry Haun

Thanks to interlocking foam forms, you can form, pour, and insulate any small foundation in a single day by Rick Arnold

Even if the foundation is not square or level, getting the mudsills right will get you back on track by Jim Anderson

by Rick Arnold

Grafting the right foundation onto a house that's neither square nor level by Rick Arnold

Waterproofing the foundation walls is only the first step; you also need a system of drains around the foundation that silt won't render useless by Larry Janesky

The bones beneath concrete's muscle, rebar has to be cut, bent and tied properly to do its job by Howard Stein

by Fred Lugano

Assembled with regular building skills, ICFs form airtight, insulating concrete walls that finish with standard materials by Andy Engel

They hold up the house, hold back the earth and keep out the water. If they're not level and square, you may end up custom-cutting every rafter. by Rick Arnold, Mike Guertin

Fill up a trench with concrete -- what's to know? If a house is going to stand on those little sidewalks, they'd better be straight, level and correctly placed. by Rick Arnold, Mike Guertin

Think of the ground around the house as the roof that keeps the foundation dry by William B. Rose

Get evenly spaced courses and consistent mortar joints by using the proper layout, mortar consistency and troweling techniques by John Carroll

Used overseas successfully for decades, this innovative foundation system uses carefully placed insulation and a slab with integral footings instead of conventional deep frost walls by Christopher R. Kendall