I have a found a home design that really suits my needs. However, some of the lock-up stage materials are from a particular company I'd rather not give money to due to its past treatment of asbestos victims. Am I able to say I want to use other products, or do they lock you into using what they want?
PS I should add that because I've only made enquiries so far, the company only ever replies with their standard email responses and never actually answers my questions. I don't want to sign a contract and then find out they won't be flexible.