Formwork from Penoplex. No boards are needed, and the foundation is immediately insulated
In modern times, every board has become gold for a price. I would like to save on the lumber that is used for the formwork for pouring the foundation. After all, then you do not know what to do with these soiled concrete boards. Polyethylene Doesn't Always Help
There is a technology for pouring strip foundations into permanent formwork where lumber is not used (or you can get by with waste in the form of a slab).
Permanent formwork technology from EPS (extruded polystyrene foam). Because Penoplex products are most often used, then this name has become a household name for this insulation.
Insulation sheets are easily exposed and fastened together with special plastic ties. The sheets are glued together at the seams with glue-foam.
There are several types of these plastic ties. Some allow you to set the desired foundation thickness.
If the strip foundation is high enough, there is a risk that the permanent formwork will not support the weight of the concrete, especially if it vibrates. To do this, it is better to install a frame made of bars or sawing waste, slab.
In this case, lumber is needed several times less than for formwork panels. And then the croaker can be cut for firewood.
After pouring into a conventional formwork, the foundation must in any case be insulated by drilling or gluing the insulation. When installing permanent formwork, you simply do it in advance. You can say save time. And if the builders do it, then the funds.
Also, when installing fixed formwork, you can save on frames for the frame when reinforcing. That's a decent weight in metal. In this case, the fittings are laid on plastic ties. In some models, they even have fasteners for fittings. Reinforcement is faster. No need to bend frames and knit a space frame.
Moreover, using this technology, it is possible to fill in and at the same time insulate armopoies and lintels over windows and doorways. These places are especially prone to freezing. If you make a formwork for pouring from boards, then the house definitely needs to be insulated. In this case, the formwork is easily mounted and if the house is not planned to be insulated, then freezing of concrete in the lintels and armopoyas will be excluded.
The inner part of the formwork can be made from OSB sheets. Dismantle them after pouring. But for some reason builders do not like to use such solutions, most are used to working in the old fashioned way. And customers do not own such technical solutions. After all, you can make your home warmer right away and save some money on lumber.
If anyone has used this technology of fixed formwork - write your review or opinion on the technology. Some of the readers will find this information useful.