Previous homeowner had it done, he wasn't a DIY type person, so i'm going to assume it was a professional job.Who installed the shingles?
I have a few spare shingles... looked on the back and they are Tamko Heritage #0193Do you know who manufactured the shingles?
RF
That's what I thought at first too MJW, but if you look close I don't think those are all shingle ends. Kind of hard to tell from the small pics that's why I asked if they were all shingle edges.The shingles are racked.....improper installation.
Shouldn't be the cause of what we are seeing here though......
What about the ventilation/insulation? Looks like small holes cut in the soffits.
Maybe squirrels hiding food under them??? Looks like the tree is rather close to the roof.
Haha, torn off plenty of shingles with nuts, corn, etc. under them. Could be from birds too, I guess.That's what I thought at first too MJW, but if you look close I don't think those are all shingle ends. Kind of hard to tell from the small pics that's why I asked if they were all shingle edges.
LOl Squirrels, seriously?
I have soffit mini-vents: along the front of the house there are 15 2" holes and 5 4" holes (larger in the front porch). Along the back there are about 36 2" holes. They all have screen over them.What about the ventilation/insulation? Looks like small holes cut in the soffits.
Maybe squirrels hiding food under them???
No insulation between rafters. The fan blows out the back, middle of the roof, just below the ridge.fish mouthing like you have there is usually a sign of poor ventilation. Just because you have sollit vents does not mean you have proper ventilation. Do you have insulation in the rafter bays? Where does the fan blow out? does it blow out of gable vents?
Your 2" vents have 1.5" NFVA and the 4' with 2.75" NFVA should have 9"NFVA per foot on each soffit to vent 1/150; http://www.lomanco.com/ProductPAGES/CirkVents.htmlNo insulation between rafters. The fan blows out the back, middle of the roof, just below the ridge.
Makes sence.Your 2" vents have 1.5" NFVA and the 4' with 2.75" NFVA should have 9"NFVA per foot on each soffit to vent 1/150; http://www.lomanco.com/ProductPAGES/CirkVents.html
The round vents should be touching each other or continuous for minimum vent supply; http://www.airvent.com/homeowner/products/intakeSoffit-specs.shtml
The powered exhaust is pulling conditioned air from the house or crawlspace/basement.