14/12/20
The percentage of sealer in total cost of the modern plastic window is quite small and is not more than one percent. Do not forget that the main feature of high-quality sealer is a high wear resistance, so saving on it, you risk a rather fast replacement of the sealer. Therefore, there are only two alternatives. The first is to install a strong and durable material, and the second is to put a cheap sealer, which will have to be changed frequently.
Sealer is not always possible to change by yourself. If it is installed in the grooves of the profile, then self-replacement is possible, in the Internet you can find videos, which show in detail how to do it. After watching such an instruction, think if you will cope with this work. If you're uncertain, it is better to contact a window company that will do it for you quickly and efficiently.
Do not purchase sealers of unknown manufacturers. If you decide to replace, take some time to study the market. So you can choose the option that suits you best.