Sound and thermal insulation of security doors: quiet and warmth in your flat
Your flat’s entrance door does not only protect against burglars. Quality security doors dampen noise from the shared corridor and help retain heat.

Sound insulation of up to 40 dB
Our doors have sound insulation of up to 40 decibels. In practice this means you can barely hear noise from the staircase, the lift or the neighbours in your flat. It is one of the things cheaper doors do not offer.
Leaf construction
- steel leaf shell made of 1.25 mm thick steel,
- internal reinforcement between the shells, 1.25 mm thick,
- 50 mm thick mineral wool filling, which serves as both thermal and sound insulation,
- seal around the perimeter of the leaf.

Door frame and threshold
The steel door frame, made of 1.5 mm thick steel, is set in concrete together with the threshold. Pouring concrete eliminates the gaps around the frame through which sound and cold would otherwise get in. More in the article Installing security doors.

Security and comfort in one
The construction that dampens noise also increases resistance to break-ins. You can find more about security in the articles Security class RC3 and Security door lock and cylinder. All parameters and prices are on the Security doors page.
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We will help you choose
At Stolárstvo Sučanský we have been making made-to-measure interior doors and door frames since 1992, and we also supply certified RC3 security doors. On-site measurement is free and made-to-measure doors carry no surcharge. Call us on 0903 231 742, visit our shop in Bratislava, our showrooms in Trnava or Žilina, or our production site in Čachtice. You can create a price quote yourself in the door visualizer. You will find all contact details on the Contact page.