For most people, safety and comfort are the most important values associated with their home. A security door is a way to ensure these. A good external door, besides being the first line of defence of your home, should be thermally insulated and soundproof. External doors for houses and flats differ, as those intended for a house, being outside, must be resistant to the elements. Before buying a security external door, check what kind of guarantees and safety and quality certificates they have. The structure of these doors is usually made of steel, while chambers are filled with various soundproofing, insulating, and at the same time, fire protective materials. They’re reinforced with piles, multiple bearings, concealed hinges with an anti-theft function, and feature a multi-point lock with a protected cylinder that allows no unauthorized keys, or a fingerprint lock and contactless key. Check out other advice we’ve prepared for you, and use our calculator to see prices of security doors and the cost of their installation. You can also always contact our experts, who’ll be more than happy to reply.