Designed both as a manifesto of expertise and a practical implementation guide, this new medium embodies the meeting between ancestral knowledge and PRB's scientific approach.
Combining the art of lime, respect for heritage and innovation

Architectural heritage demands special attention, as well as a deep respect for traditions and the specific characteristics of each building. Through its HISTORIA range (Mastery, Art & Tradition), PRB aims to facilitate all renovation and restoration work.
The brochure highlights the exceptional virtues of lime (aerial and natural hydraulic), a millennia-old material essential for ensuring the flexibility, resistance, breathability and sanitation of sensitive old masonry.
It also underlines the crucial importance of the selected sands, in particular the exceptional quality sand from the Boissière des Landes (85) deposit, whose round grain shape guarantees the durability and beauty of traditional finishes.
A key operational tool: the "Solution Sheets"
More than just a catalogue, this brochure has been designed as a true on-site support tool for architects and stonemasons.
It includes a comprehensive set of detailed, step-by-step solution sheets, covering a wide variety of technical problems:
- Façade renovation: using traditional lime plaster (PRB BELLE ÉPOQUE) or lightweight, microfiber-reinforced single-layer plaster (PRB FINICHAUX).
- Stone and brick work: with sheets dedicated to pointing (PRB JOINT BM), to the renovation of plasterwork with exposed stone or to the meticulous repair of cut stone (PRB RÉPAR PIERRE).
- Specific heritage techniques: from plastering on rammed earth walls, through the creation of hemp-lime mortars, to the treatment of damp or saltpetered masonry.
- Finishes and embellishment: highlighting textures (scraped, troweled, smoothed finishes) and applying traditional lime-based washes (PRB BADIRÉNO).
Environmental commitment, an integral part of the restoration
True to its innovative approach, PRB also highlights in this guide its latest generation solutions with reduced carbon footprint (Neo Terra commitments).
Professionals will discover, in particular, cement-free solutions such as PRB MORTAR BTC M5 R&D (ideal for natural stone and raw earth) or PRB REPAIR MORTAR R3 R&D dedicated to old concretes, proving that the preservation of the past can perfectly fit into the environmental requirements of today and tomorrow.
The PRB HISTORIA brochure: Preserving and enhancing old buildings is now available in printed form and can be downloaded for free from the company's official website: www.prb.fr.