There are different types of balustrades which is why you need to get in touch with someone experienced in this area. Someone who daily installs such items can tell you everything related to it. There are improvements that raise the cost such as finishes. If you choose frosted or tinted windows or you go for engraved designs, it will cost you more. You may wonder why there is such a difference between handrails with or without frames. The difference comes from the support system.  If you choose framed handrails the costs will not be so high.