Amoving to another question will save this response question 9 which of the following can be a challenge with timber frame construction ? since the frame is mostly exposed, it is challenging to know where to install the insulation timbers are not readily available and can be difficult to order timbers are more subject to decay than dimensional lumber timber framing takes 2-3 time longer to install than dimensioned lumber all of the above moving to another question will save this response. o ei type here to search a