Construction Foil – Practical Guide to Selection and Application

Film thickness and its applications

The thickness of construction foil directly determines its intended use and durability. Thin film like FOLIJA PE TRANSPARENTNA 0,15mcr (150 microns) excels as temporary surface protection during construction work and as a vapor barrier. For foundation and floor waterproofing, thicker variants of 200-300 microns are recommended as they better withstand loads and punctures.

Transparent vs black foil

Transparent PE film allows visual inspection of the surface underneath and transmits light, making it useful in greenhouses and temporary covers. Black film provides additional UV protection and is used for mulching, weed control and long-term waterproofing where light penetration is undesirable.

Key characteristics of quality construction foil

Brands like Dikem and Kronmat manufacture films with controlled thickness that guarantee uniform protection without thin spots. For waterproofing applications, puncture resistance is critical – verify that the film has adequate polyethylene density (LDPE or HDPE). For vapor barriers, the Sd value indicating diffusion resistance is essential.

Proper installation and joining

Always install foil with a minimum overlap of 15-20 cm and seal using specialized tape designed for PE materials. Products from reputable brands such as Interalis and Interalis Chemicals come with clear installation instructions. Never skimp on tape quality – poorly sealed joints completely negate the protective function of the foil.

Common mistakes in selection and installation

Purchasing based solely on price often leads to insufficient thickness that tears easily during work. Another frequent error is using construction foil instead of specialized vapor barrier membrane in roof structures – ordinary PE film lacks the necessary water vapor permeability. Always select foil according to its specific purpose, not as a universal solution.

Selection and Pricing

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