Auditorio Víctor Villegas Auditorium Waterproofing of the roof - Murcia

Víctor Villegas Auditorium Waterproofing

Client: Institute of Industrial Culture and Arts of the Region of Murcia (ICA)

Location: Auditorio Víctor Villegas Auditorium, Avda. Primero de Mayo, s/n. Murcia

The award project for the installation of a photovoltaic plant and waterproofing on the roof of the Victor Villegas Auditorium in Murcia has included the waterproofing of the main roof of the auditorium, specifically the area just above the stalls. This intervention, which aims to improve the energy efficiency and structural protection of the building, has been developed with a focus on safety, sustainability and resource optimisation.

Project characteristics

• Area of intervention: 1,420 m² of main roof.
• Execution budget: €99,975.62.

Development of the work

The work began on 1 August and was finally completed on 28 November. We have had some occasional stoppages due to the work coinciding with rehearsals of the Murcia Symphony Orchestra or special events in the auditorium, etc.

Intervention Details

The intervention was carried out in several phases and required the installation of a specialised scaffolding system, in order to guarantee the safety of the workers and avoid passing over high-risk areas, such as the auditorium stage. The installation of the scaffolding was carried out by our partner SERMACO, while all the civil works were executed by RAFRANMAR INVERSIONES 2015, S.L.

The main tasks of the intervention were as follows:

1. Dismantling and stockpiling of materials:
   - Dismantling of existing gravel and stockpiling it on the roof.
2. - Removal of geotextile fabric and insulation boards for recycling.
3. Repair of damaged areas:
   - Repair of roof and parapet areas requiring intervention.
4. Installation of waterproofing:
   - Application of an SBS elastomer modified bitumen film, LBM(SBS)-40/G-FP, which ensures durable and resistant protection.
5. Insulation and Protection:
   - Installation of a 40 mm weldable polyisocyanurate foam insulation panel, which provides higher thermal and compressive strength than conventional polystyrene panels.
6. Installation of a geotextile sheet over the insulation.
   - Replacement of stockpiled gravel to restore the functionality of the roof.

Reinforcement in Vertical Meetings:

Laying of a reinforcement strip using an SBS-LBM-40-FP asphalt sheet at all vertical joints of existing installations and on the perimeter of the roof parapet, ensuring waterproofing at critical points.

Certification and Testing

Flood testing of the waterproofing, certified by the MASSALIA INGENIEROS, S.L. laboratory.

Sustainable Management

The intervention has included a sustainable approach to the management of discarded materials. All removed material, such as geotextile and insulation boards, has been taken to an authorised manager for recycling, contributing to the reduction of the environmental impact of the project.

Safety at Work

During the works, strict safety measures were maintained, following the regulations established for works on deck. Workers used appropriate personal protective equipment, including helmet, boots, gloves, goggles and harness, and secured themselves to the lifelines when necessary.

Resource Planning and Optimisation

The work was carried out in four phases in order to optimise resources and reduce the environmental impact. Thanks to this planning, it was possible to stockpile the gravel in the areas not affected by the intervention, avoiding the need to transport new materials and reducing both the costs and the carbon footprint associated with the project. This strategy also made it possible to minimise the use of heavy cranes, limiting it to only three interventions.

This project has not only improved the waterproofing of the Auditorio Víctor Villegas, but has also contributed to its energy sustainability and optimised the available resources, guaranteeing an efficient, safe and environmentally friendly intervention.

Acknowledgements

We would like to thank José Antonio Bastida, head of maintenance at the Auditorium, who, within his possibilities, has greatly facilitated the development of the work, and the technicians working on the auditorium stage, who have given us their support on several occasions when we have asked them for a favour. Their collaboration has been fundamental for the correct execution of the work and the coordination of the different activities carried out in the auditorium during this period.

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