When deciding for the frame, choose between aluminum and steel. For security, the most recommended is to use a steel door. If you need something that is less corrosive then using aluminum is the best option. The channel created for the frame should be deep enough for the grille. The channel and the frame should have a secure connection. Corner reinforcements are also necessary.
For the infill, there are many options to choose from such as stainless steel mesh, steel, aluminum grill and perforated sheet made of aluminum. For optimum security, steel bars, grilles and motifs are the best options. Though aluminum grilles may look like fly screens, there are heavy-duty types. If you use doors made of stainless steel mesh then they are usually made of steel or aluminum frames. It provides security and does not obscure the view though it may look like a flyscreen as well. The newest available kind is the perforated sheets made of aluminum. These types are structural grade and are the cheaper version of the stainless steel mesh.
When installing the grilles, the cords need to be thick. A strong grille is useless unless connected properly to the door frame. It is usually fasten to the frame. A grille should be welded onto the frame, at every connection points, to make the structure more reliable.
For more secure locks, it is better to opt for the five-pin cylinder since the wafer locks are proven to be less secure. A lock with three-point is also necessary if you want to make sure that the door will not be easily wrenched with enough force. Upon purchasing, most locks come with a 25-year warranty.
The number of hinges on the door should not be less than three and the hinge pins should be permanent so it can’t be moved. It is ideal to have a bigger pin.
With the advancement in technology, security doors can now be custom made depending on the client’s need and preference while making sure it still meets the standard required. If materials used are within the standard then it should have resistance to corrosion. For environment that are more prone to corrosion, use powder coated or hot-dip galvanized steel or aluminum.
You should know your door inside out and if it can be easily accessed in case of fire and other emergencies. Safety precautions should be considered either you need to stay in or stay out.