Premium Steel Doors Manufactured in Britain
Premium Steel Doors Manufactured in Britain 
Strongdor Secured by Design door-sets are certified to comply with the standards set by the national Police initiative to improve the security of buildings and their immediate surroundings, to provide safe places to live, work, shop and visit.
These door-sets offer greater protection to bin stores, plant rooms and access to communal areas and can be used on both residential and commercial developments that require the peace of mind that comes with Secured by Design compliance.
Available with multiple upgrades including acoustic rating up to 39dB, U-value as low as 1.5Wm2K*, manual and electric locking.
*U-value not available on louvred door-sets.
Fast quotes
Easy fit doors
Steel door experts
10-15 day lead time*
Single - up to 2.25m
Double - up to 2.25m
Single - up to 1.36m
Double - up to 2.5m
44mm deep leaf skin
Comprising of 2 x 1.2mm steel sheets, the leaf skins are mechanically interlocked and internally bonded providing greater stability and protection against de-lamination.
42mm thick 'Hexatex' core.
EN1026:2000 to class 4 – 600Pa (113kmh) test pressure
EN1027:2000 to 150Pa for outward opening and 100Pa for inward
Upgrade to Internal BS EN 1634:1 2008
EN12211:2000 to 1200Pa (Class A3) 98 mph
Available - air flow reduced due to security design
BS 6375: Part 1: 2009 (test to EN1026:2000, EN1027:2000, EN12211:2000) to 1200 exposure rating
Available with an insulated core as low as 1.5 U-value*
Up to 39dB rating.
Leaf
44mm door leaf thickness, fitted with an integrated astragal for added security. Comprising of 2 x 1.2mm steel sheets, the leaf skins are mechanically interlocked and internally bonded providing greater stability and protection against de-lamination.
42mm thick ‘Hexatex’ core or upgrade to insulated core for up to 1.5 W/m²K.
Standards
Certified to: PAS 24:2016 Enhanced security performance requirement for door-sets and windows in the UK. Door-sets and windows intended to offer a level of security suitable for dwellings and other buildings exposed to comparable risk. BM Trada Certificate 050/250.
Types
Classified as single and double lead, over panel, fully glazed, hinged, internally glazed, inward opening, louvre, outward opening, side panel/vision panel, with or without letter plate.
Threshold
AM3 inward opening or AM5 outward opening threshold available on request.
Finish
Supplied inclusive of a powder coated finish in a standard colour. Full range of RAL and BS colours available.
Options and Upgrades
Manual and electric locking Glazed and louvre panels available.
Single Door Installation
This video contains detailed, step-by-step instructions for the safe installation of a Strongdor Steeldor single door-set. Please pay particular attention to the safety instructions.
Double Door Installation
This video contains detailed, step-by-step instructions for the safe installation of a Strongdor Steeldor double door-set. Please pay particular attention to the safety instructions.
Speak to an expert now
01524 727000 Manual & Electric SBD Steel Doors
‘LPS’ is the abbreviation for Loss Prevention Standard and ‘LPS1175’ is just one of many standards created by the Loss Prevention Certification Board. LPS1175 specifically focuses on the intruder resistance and security of doors, and in Strongdor’s case, steel doors.
View ArticleUnfortunately there is no simple answer to this question as all security rated door-sets have protection enhancement. The level of security required for your door-set will be dependent on the location and specification of your installation.
Check out our documents LPS 1175 vs PAS 24:2016 and LPS 1175 Explained to see which security rating may be best for you!
It is the customer’s responsibility to ensure all details within the sales quotation / sales order meet the exact specification and / or original enquiry and are compliant with current building regulations including location and method of installation.
We are here to help and advise only and cannot accept responsibility for discrepancies after the order is confirmed.
Strongdor Terms and Conditions
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