Wood is a common choice of material for construction projects, particularly due to its structural and aesthetic properties. However, its vulnerability to fire is a major drawback which demands taking precautions against fire risks. Intumescent varnish is increasingly becoming an essential solution for protecting wooden surfaces effectively. This article looks at the many benefits of using intumescent varnish.
It is a fire-retardant coating applied to surfaces, especially wood, which reacts in a certain way when exposed to high temperatures. It reacts by expanding and forming a thick foam (called “meringue”) when exposed to heat. This foam plays a twofold role. It not only acts as a physical barrier slowing down the dissipation of heat from the wood, but also restricts the supply of oxygen, which in turn slows down combustion of the material.
Intumescent varnish acts as an active barrier against flames, helping to delay wood burning. It takes significantly longer to catch fire and break down as a result. Saving time like this is invaluable in this kind of emergency, allowing anyone present to evacuate safely and call the emergency services.
Fire safety regulations in buildings (especially those visited by the public) require materials meeting certain standards. Applying intumescent varnish makes it possible to comply with these safety standards, known as “Euroclasses”. This European classification offers guaranteed safety levels validated by laboratory testing in accordance with EN 13501-1.
One of the major advantages of using intumescent varnish is that it preserves the natural look of wood thanks to its transparent finish. Unlike other flame-retardant finishes, intumescent varnish protects wood while preserving its appearance.
Intumescent varnish is normally applied in the same way as other types of varnish: with a brush, roller or spray. This range of applications makes it possible to meet every need, depending on the project.
Intumescent varnishes are excellent fire-retardant solutions for when you want to preserve the appearance of wood while at the same time meeting fire safety standards. ‘Lineo supplies a full range of flame retardant solutions meeting EN-13501-1. The F’Lineo range includes intumescent wood varnishes that meet these challenges in the construction sector perfectly. Intumescent paint is also available, effective against fire and enabling a white finish. The ‘Lineo teams are available to meet the specific needs of each project, so do not hesitate to get in touch.
