First step: get a professional energy audit with blower door test. It will tell you exactly where you are losing the most air. In old farmhouses that is typically rim joists, attic air sealing, plumbing and electrical penetrations.
This is a real code issue. If you spray over Romex in an attic it may need to be re-rated. Most AHJs want wiring in conduit if it is going to be embedded in foam.
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Mike T. (TX) posted in Contractor Talk: "Best temp settings for 2lb foam in summer heat"New article: "Spray Foam R-Value: The Complete Guide" — Read it nowSarah K. (OH) rated a contractor 5 stars in ClevelandWebinar: Cold Climate Installations — June 18 at 2PM EDT — Register Free28 new members joined this week!Texas Chapter Meetup: June 24 in Dallas — RSVP nowFoamPro_Dave replied: "Graco vs Gusmer after 8 years — my verdict"Mike T. (TX) posted in Contractor Talk: "Best temp settings for 2lb foam in summer heat"New article: "Spray Foam R-Value: The Complete Guide" — Read it nowSarah K. (OH) rated a contractor 5 stars in ClevelandWebinar: Cold Climate Installations — June 18 at 2PM EDT — Register Free28 new members joined this week!Texas Chapter Meetup: June 24 in Dallas — RSVP nowFoamPro_Dave replied: "Graco vs Gusmer after 8 years — my verdict"
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Mike T. (TX) posted in Contractor Talk 2 min ago
Sarah K. (OH) asked in Ask An Expert 9 min ago
FoamPro_Dave replied in Equipment and Rigs 15 min ago
