IMG 0026 2741

Brussels Expo - Palaces 8, 9, patio and 12

On behalf of Brussels Expo, we handled the roof renovations of the flat roofs of palaces 8, 9, patio and 12.
  • Client: Brussels Expo

  • Surface: 21.000 m²

  • Budget: Palace 8, 9 and patio: €685,000 I Palace 12: €685,000

  • Timing: Palace 8, 9 and patio: September 2016 (study) - April 2017 I Palace 12: March 2017 (study) - November 2017

  • Status: Executed

The former grand expo halls of the World's Fair on the Heysel site in Brussels were built in 1935 by architect/engineer Joseph Van Neck. They underwent an extension in the 1940s and in 1958 for the World Expo. Palaces 8, 9 and patio date from 1957, while palace 12 dates from 1989.

The main buildings are partially listed and consist of a monolithic concrete skeleton with infill brickwork and are clad in natural stone cladding and copper eaves. The original external joinery consists of slender rolled steel sections.

Brussels Expo3 2709

Study and design

  • Evaluation of the existing condition based on site surveys
  • Study of the roof details depending on the feasibility of the concept options, including study of the roof lights
  • Evaluation of the possible additional weight on the respective roofs based on the current roof sealing weight, consultation with Aib-Vinçotte, review of existing plans.
  • Building physics study: review and advice on the insulation thicknesses to be used within the framework of the current regulations, the 2017, 2020 regulations. Review of the need for a vapour barrier, type of insulation material and type of roof waterproofing.
  • Synthesis: 4 concept options (material use, fixing method, thickness etc. ) with +/- evaluation and budget implications, impact on hall use, use during renovation and suspensions.
IMG 0034 2737

Tender dossier

  • On the basis of the draft option retained by Brussels Expo, drafting of the technical and administrative specifications, detailed drawings, detailed bill of quantities and summary bill of quantities (tender form).
  • Price comparison and negotiation of the tender in consultation with Brussels Expo.
Brussels Expo2 2708

Construction site

  • Technical control of the execution of the works.
  • leading the weekly worksite meeting (technical, cost, organisational, etc.)
  • technical control of the smooth running of the works
  • reporting.
  • Assisting with provisional and final acceptance.

Meet our project team

From Team Renovation, Restoration & Maintenance (3)

prof. arch. Jan Moens

General Director
Head of Research & Development Department
Managing Director
E-mail |
Johan 3224

prof. arch. Johan Cordonnier

Project architect
Expert construction details
Façade advisor
E-mail |
B B Ken Koolsaet 7293 Large

Ken Coolsaet

Adviseur platte daken
Veiligheidscoördinator
E-mail |

From Team Safety (1)

B B Barbara Arts 8055 Large

arch. Barbara Arts

Project architect
Safety coordinator
E-mail |
TAGS: Roof