In the dynamic construction industry, sustainability is key, leading to the emergence of innovative materials like Woodcrete Insulated Concrete Forms (ICF). These blocks are eco-friendly and highly energy-efficient, perfect for builders and homeowners who prioritise the environment. This blog explores why eco-friendly Woodcrete ICF blocks are transforming the construction landscape.

What is Woodcrete?

Woodcrete is a type of building material that ingeniously combines the natural insulating properties of wood with the durability and strength of concrete. Specifically, it is made from a mix of recycled waste wood chips and cement. These are bonded together to create a lightweight and sustainable material.

1. Recycled Wood Chips: Woodcrete uses recycled wood chips, which are typically a by-product of various wood processing industries. These chips are treated to remove any impurities and are then used as the primary aggregate in the material mix. This not only helps in waste management but also reduces the environmental impact associated with logging for new timber.
2. Cement: Cement acts as a binder in woodcrete, encapsulating the wood chips and giving the composite material structural integrity. The cement used is often Portland cement, which, when mixed with wood chips, cures into a solid, stone-like material but with significantly lighter weight than traditional concrete.
3. Natural Insulation: The inclusion of wood chips not only contributes to the sustainability of Woodcrete but also enhances its insulation properties. Wood naturally has air pockets, which help in reducing heat transfer. Combined with cement, these properties are enhanced, making Woodcrete an excellent insulator. This is particularly beneficial in construction, as it improves building energy efficiency.
4. Breathability and Moisture Regulation: Unlike traditional concrete, Woodcrete is breathable, allowing moisture to pass through the material without condensation. This property helps regulate indoor humidity levels and promotes a healthier living environment.
5. Durability and Fire Resistance: Despite its wood component, Woodcrete offers remarkable durability and is resistant to common problems like rot, pests, and decay that affect standard wood products. Moreover, the material is fire-resistant, providing an additional layer of safety in building construction.

Why use ECO-friendly Woodcrete?

Woodcrete stands out as an eco-friendly option in the construction sector. Utilising waste wood reduces the amount of material sent to landfills and decreases the demand for virgin resources. The production process of Woodcrete is designed to have a lower carbon footprint compared to traditional concrete, as it consumes less energy and emits fewer greenhouse gases.

Woodcrete can be moulded into various shapes and sizes, making it suitable for a wide range of construction applications, from residential buildings to commercial structures. It is particularly popular in insulated concrete forms (ICFs), which create energy-efficient and robust building envelopes.

Despite its wood content, Woodcrete offers excellent fire resistance, making it a safe choice for building homes and commercial properties. It is also resistant to pests, rot, and decay, which are common issues with traditional wood-based construction materials.

Woodcrete ICFs are modular and easy to install. Their interlocking design simplifies construction, reducing build time and labour costs. This ease of installation not only speeds up the construction timeline but also minimises disruption on-site.

Using EWI Pro lime products with Woodcrete

Combining EWI Pro Lime Basecoat with Woodcrete is an effective strategy for improving the external walls of buildings, particularly for enhancing thermal insulation and moisture management. This pairing is beneficial because the lime basecoat enhances the natural insulating properties of Woodcrete, promoting a stable internal temperature and reducing energy costs. Additionally, the breathability of the lime basecoat complements Woodcrete’s moisture-regulating properties, helping to prevent dampness and maintain a healthier building environment.

The lime basecoat also adds a durable protective layer to the Woodcrete. This shields it from weathering and extends the material’s lifespan by protecting it against moisture and freeze-thaw cycles. This combination not only supports sustainable building practices by utilising eco-friendly materials but also offers aesthetic flexibility. Different finishes can be applied over the lime basecoat. However, it can also be left as a finish. The colour of the product, once dry, is a desirable one. When applying this system, ensure the Woodcrete surface is clean and possibly primed to improve adhesion.

We have recently visited a site using EWI Pro Lime Basecoat internally with Woodcrete to produce fascinating results. You can watch the video below!