Get to know the pros and cons of Insulated concrete formwork (ICF)
If you’re looking for a quick structural system with impressive energy performance. Then insulated concrete framework could be a great choice for your build project.
What is ICF?
ICF is based on hollow blocks or sheet components, usually made from expanded polystyrene, fastened together with metal or plastic connectors. The panels or blocks feature an interlocking profile, so they can be stacked without bonding materials. Concrete is then poured inside to make the structure secure.
Is ICF energy efficient?
Once the pour is complete, the ICF remains in place to provide a robust layer of thermal insulation. ICF structures also offer very good airtightness, as the concrete pour and insulating formwork combine to create a highly sealed house shell. In addition, the different thicknesses of ICF blocks, with varying insulation depths, are available to help you achieve your target thermal performance.
Pros and cons of Insulated concrete formwork –
Pros
- Speed of build
The construction is simple and not labour-intensive. Insulated concrete formwork blocks are very similar to Lego blocks in the way they interlock and stack together.
- Durability
ICF buildings are incredibly structurally sound due to the concrete and steel reinforcement that is incorporated into the walls. The buildings are known to be disaster-proof.
- Reduced energy bills
They are incredibly energy efficient and can easily achieve an A rating. This level of efficiency means less energy is required to heat the home, which reduces the energy bill. Owners that have Insulated concrete formwork buildings have experienced as much as a 60% reduction in their energy bills.
- Peace and quite
The blocks used in construction create thick and solid walls, which noise cannot penetrate. If noise is an issue in your area, or you live in a city but want peacefulness then, ICF maybe your best solution.
Cons
- The walls can be very thick. This can cause limited space in some areas, particularly cities.
Cost of ICF –
In addition, depending on the job, the formwork can be inexpensive or expensive. Most Insulated concrete formwork systems on sale cost between £25 and £35 meters squared.
