
Roofs
Synthetic and bituminous waterproofing for flat roofs, including insulated and protected build-ups.
Born in Barcelona. Specialist waterproofing for main contractors: roofs, terraces, podiums and below-ground structures.
Founded
Projects delivered
m² · largest single project
Clients by referral
We coordinate the waterproofing works with the main contractor and project team, from reviewing the proposed build-up to installation and handover.
Official manufacturer certifications
Roof waterproofing, refurbishment and membrane installation across healthcare, sports and industrial buildings.

Badalona · Healthcare · PVC
Mechanically fixed PVC roof waterproofing over mineral wool insulation and a geotextile separation layer.

Barcelona · Sports venue
Waterproofing of external hardscape areas using a 1.5 mm glass-fibre reinforced PVC membrane over geotextile, with a protective mortar screed.

Martorell · Industrial building
Bituminous radon gas barrier with thermal insulation. Building area: 5,864 m².

Parets · Bituminous roof
Two-layer bituminous waterproofing with XPS insulation and a gravel finish.

Cerdanyola · Roof refurbishment
Refurbishment of a metal roof with thermal insulation and PVC membrane waterproofing.

We review drawings, details and interfaces to define the waterproofing scope and identify points requiring coordination.
We coordinate the system proposal, product information and installation details with the project team before work starts.
Our team installs the agreed system, with checks at joints, drainage outlets, penetrations and perimeter details.
We review the completed work and provide the documentation agreed for the project.
OREMAG is a family-owned waterproofing contractor founded in 2015 by Pedro Gamero and now led by his daughter, Ángela Gamero.
The family’s experience in construction spans three generations. Today, OREMAG works mainly with main contractors on new-build projects, alongside refurbishment work.

For high-end residential new-build projects. Share your drawings, programme and technical requirements to discuss the waterproofing scope with our team.
Request a meeting
OREMAG helped found the National Association of Waterproofing Specialists. ANEDI promotes safety, quality, integrity and professional development across the waterproofing trade.
About ANEDIShare the project location, building type, waterproofing scope, approximate area and programme. Use the form to request a meeting with our team.
gamero@oremag.es