Sheerline’s aluminium S1 roof lantern has achieved Secured by Design (SBD) accreditation, the police-backed initiative designed to provide a recognised standard that increases security while deterring and reducing crime.

According to Sheerline, security was a key consideration when designing the S1 lantern, as traditional lanterns are said to have a host of weaknesses that can be exploited.

Sheerline says it has overcome these issues through design solutions such as high-performance glazing tape, anti-tamper rafter fixings and high-security radius fixings that are only accessible from the inside – all of which are supplied as standard. In addition, glazing is held securely in position using a unique patent-pending glass lock.

The optional SBD upgrade adds additional security clamping plates, locking the SBD lantern’s laminated glass panels in place, preventing them from being lifted even if rafter top caps have been removed. These stainless steel components are held in place by stainless steel security screws for added strength.

This optional security upgrade is said to be invisible on finished roofs and doesn’t compromise aesthetics or the thermal performance delivered by Sheerline’s Thermlock technology, which supports 28mm glazing and offers a centre pane U-value of 1.0.

Roger Hartshorn, Sheerline CEO, said: “We’re delighted our lantern is among the top rated for security in the UK as very few systems have achieved this standard. It shows our commitment to security and signals the fact that every product in the Sheerline range is now SBD accredited.”