Underground storm shelter installers near Ozark, MO

How an underground shelter works

An underground shelter is a steel or precast concrete unit set into an excavated hole in your yard, backfilled and anchored so only the entry door sits above ground. Being below grade keeps you out of the path of wind-borne debris, which is what causes most tornado injuries.

Digging in Ozarks ground

Much of southwest Missouri sits on rocky soil over limestone, and it's common to hit rock a few feet down. Installers who work here bring equipment to break or remove rock, and they'll look at slope and drainage so water runs away from the door instead of into the shelter. Ask about drainage and how the unit is sealed before you sign.

Things to compare

• Steel or precast concrete construction
• Size and how many people it seats
• Door type: flat, slope-front or side entry
• Ventilation, lighting and an inside latch
• How the unit is anchored against groundwater lift
• Testing to FEMA P-320 and ICC 500 guidance

Who it suits

Underground shelters are a good fit for homes with yard space and no basement, especially on larger rural lots. Steep stairs can be hard for people with limited mobility; slope-front models with handrails help, and an above-ground safe room may be the better choice.