Earth Sheltered Homes Financing Construction Sales

Strong Pre-engineered

The Shelter Systems are constructed  pre-engineered, providing you the peace of mind of knowing that your shelter will protect you no matter what.

The Shelter Systems uses a unique, patented technique to ensure that each shelter can withstand a three-bar blast.

Innovative Construction using the following components :

High Pressure Blast Doors
The strongest door for your shelter
3.4 bar (50 PSI) positive pressure, 1 bar (14.7 PSI) negative pressure
- 7200 pounds per square foot engineered pressure rating -

Click to enlarge : Single leaf blast door : Optional viewer, security cam
latches, and outside latches

* Bolt on design that is as secure as a poured in place door with optional wall capture brackets

* Step over or flat threshold

* Optional viewer, security cam latches, and outside latches
* Easy installation - fill with concrete after installation

We offer a complete range of high pressure swinging blast resistant doorsand blast hatches.

These are true high pressure blast doors that feature massive hinges and heavy duty cam latches. They have been in use for years in a variety of applications - bomb shelters, factories, foundries.

This double leaf blast resistant door is designed to allow vehicles to pass through.

It carries the same pressure rating as our single leaf blast door shown above.

This door comes in two standard sizes - and customs sizes can be built.

The standard sizes are 72 inches wide by 80 inches tall and 96 inches wide by 80 inches tall.

The free opening when installed is nominally one half inch under the rated size.

As with the single leaf blast door, this door is designed to bolt to the wall with high strength concrete wedge anchors - after the wall is poured and has cured.

This drastically eases installation time and cost.

If you choose the assault resistant cam latches, you also get the wall capture brackets -
which give you the security of a poured in place door with the ease of installation of a bolt on door.

The double leaf blast door can be built in two halves - with each door leaf attached to half the frame.

This reduces the cost of shipping and eases the handling of the door when you install it.

If your shelter has the ability to house a vehicle, you need this door.

Please measure the height and width of your vehicle before ordering.


Horizontal Blast Hatch

This blast hatch is designed to mount on a vertical shaft.

Unlike the blast doors, this hatch is not filled with concrete.

It features a gas charged lift strut, that aids in opening. The hasp can be locked in the
open or closed position with a user-supplied paddle lock.

Installation is simple - lay the hatch on the riser coming up from the shelter, center drill the hole locations, remove the hatch, drill out the holes with the included concrete drill bit, install the included concrete wedge anchor studs, replace the hatch - grouting it in place, torque down the nuts on the wedge anchors, install the lift strut.

The opening size is 32 by 24 inches.

Update - we have a new blast hatch that is 36 by 32 inches. Contact
Earthlog for more information on this hatch.