I did a fast drive-by for a house that’s lacking on the intake side for NFA.
Gabled, closed soffits but no intake vents on the low side (does have gable vents).
30 year roof; no idea how old it is.
I am thinking the addition of louvered vents provided I can see through the attic space clear through to the tips of the eaves & it’s not stuffed with blown or rolled insulation. Otherwise, I may suggest a GAF solar powered intake booster or three.
So, questions for the floor:
- I’m thinking a RotoZip. Screw 1x4’s in a smaller rectangle to use as a guide, then use a RotoZip to carve my rectangle (again, smaller than the screened vents), then install. I am thinking that a SawzAll is going to be way too wiggy & will run out offline (same for a jigsaw upside down). Besides, this gives me an excuse to get a new tool & that’s always a good thing. Maybe run just to the near end of my lines & carefully finish off with the Zip or maybe a Jigsaw @ this point?
- What would you charge for a 1 story elevation?
2a. What would you charge for a 2 story (it’s on a slope with the street side level & back wall set higher from the ground).
- What kind of spacing do you suggest (on average) to get proper NFA?
- Would you skip the individual louvered vents & instead go for something like a Hardie continuous soffit vent?
*3 & 4 Are assuming there’s no insulation blockage @ the header / load bearing wall. If it’s blocked, I’m going to suggest the solar powered intake vents.