The floor joists and subflooring in our house in northern Michigan was installed during the winter of 2017 when the outside temperatures were consistently below zero oF, at times -23 oF.  The subfloor adhesive used was BFS-400 Subfloor Adhesive (Builders First Source) which is made by DAP.  The low end of the working temperature range for this adhesive is 0 oF and the curing time is 7 days, according to the product technical bulletin.  Does anyone know what happens to the adhesive properties of this type of subfloor adhesive (solvent based) when applied outside the recommended working range?  What happens to the “cured” adhesive material over time when applied during these extreme conditions?
Our house has nuisance noises coming from the joists/subfloor system during the heating season.  The clicking/clanging noises appear to be coming from the joists/subfloor system when our air-to-air heat pump, and at colder temperatures the propane forced air furnace, are running as well as when they turn off and the house cools.  This appears to be due to expansion and contraction of the system.  We have opened up our lower level finished ceiling in specific areas to pinpoint the numerous locations of the noises but can not specifically locate the exact locations and specific causes of the noises.  We have had the HVAC contractor as well as the framing contractor and a Builders First Source rep come in to observe and listen to the problem but they have not yet figured it out nor have a solution.
Any suggestions to solve this nuisance noise problem would be appreciated.