48
APPOINTMENTS & COMPANY NEWS
Navigating fl at roof design standards with Bauder’s specifi cation support for architects
C omprehensive, free-of-charge fl at
roof specifi cation support from Bauder helps architects mitigate the challenges of technical calculations, regulation compliance, and detail design. And, with 24 Bauder systems covered by 16 CCPI (Code for Construction Product Information) marks, architects can trust that the information used to specify a Bauder solution
is “clear, accurate, up to accessible, and unambiguous.”
Flat roofs are often perceived as simple. In practice, they present a range of design and compliance challenges. For architects, ensuring performance,
buildability, and
alignment with regulations often requires signifi cant technical input across multiple disciplines. Bauder’s in-house technical team works closely with architects to simplify this process and deliver single-point support that saves time, reduces design risk, and streamlines project delivery.
Approved Document A: Structural and load considerations
Bauder provides weight load calculations to ensure that proposed roof systems do not exceed the structural capacity of the building. These calculations align with BS EN 1991- 1-1, supporting compliance with Approved Document A of the Building Regulations. This is a consideration particularly with blue roofs, green roofs, and roofs with heavy insulation build-ups, for which these calculations can help inform architects’ Additionally,
material selection. under Approved Document
A, accurate wind load design is delivered in line with BS EN 1991-1-4 and, ensuring resistance to wind uplift – essential for tall buildings or exposed sites.
Approved Document L: Thermal performance and energy compliance Another component of Bauder’s support is resolving U-values and thermal bridging. Calculated in accordance with BS EN ISO 6946 and BR 443, they ensure the thermal performance of the roof build-up meets the standards of Approved Document L. Integrating these assessments early in the design process helps architects meet energy targets effi ciently and avoid potential redesigns, which can be costly both in terms of time and money.
date,
Ayrshire Hospice: Close collaboration between Bauder and architects Austin-Smith: Lord LLP ensured a successful install on a challenging project.
Approved Document H: Drainage and tapered insulation schemes For drainage outlets, Bauder adheres to BS EN 12056-3 and Approved Document H, ensuring compliant roof drainage layouts that reduce the risk of standing water and long-term membrane damage. Bauder’s tapered insulation schemes provide drainage and thermal performance where structural falls are not feasible. From an architectural standpoint, they save space
and reduce and structural Approved (Conservation of Energy).
Approved Document E: Acoustic performance
Depending on the system specifi ed, Bauder offers detailed assessments of acoustic performance, with roof build-ups tested to BS EN ISO 10140-2:2021 and designed to meet the requirements of Approved Document E. This is especially important in buildings such as schools and hospitals, where noise transfer can signifi cantly impact educational attainment and health outcomes.
Approved Document C: Moisture control
For condensation risk analysis, and meet the Bauder
uses modelling based on BS EN ISO 13788 (2012), helping architects prevent interstitial condensation
moisture
management expectations set out in BS 5250 and Approved Document C. In addition, architects can be confi dent that meeting the requirements of BS 6229:2018 supports compliance with Approved Document C for a
complexity,
while ensuring regulatory compliance with BS 6229:2018, Approved Document H (Drainage),
Document L
jointed system that is impervious to moisture and offers resistance to weather.
National Standards for SuDS Compliance: Blue roofs
In response to increasing rainfall intensity and sustainable drainage systems (SuDS) requirements,
Bauder provides H-max
capacity calculations and discharge reports for blue roofs designed to attenuate a 1:100-year storm event. These reports help architects meet both planning conditions and environmental targets.
Ayrshire Hospice project: Collaboration in action
A Scottish charity required extensions to its 201-year-old Category ‘B’ listed premises. Close collaboration during a challenging project between Bauder and architects Austin-Smith: Lord LLP ensured fl at-roof upgrades met regulations while respecting the site’s heritage and adding a modern touch to the rear curtilage. Precision in the fully compliant, multi-layer green roof design is backed by 20 years of assured design, warranty, and performance. The project’s success enables the charity to expand its care across Ayrshire and Arran communities. Bauder’s specifi cation support provides architects with a single, reliable contact for fl at roof design, grounded in current standards and regulations and ensuring the specifi ed fl at roof systems are compliant and aligned with the project’s design intent.
For more information on Bauder’s specifi cation support for architects, please get in touch.
01473 257671
www.bauder.co.uk/contact-us
WWW.ARCHITECTSDATAFILE.CO.UK
ADF NOVEMBER/DECEMBER 2025
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76
