WDR Roofing Company Austin - Roof Repair & Replacement
Austin, TX, USA
That appears to be pretty attractive: go with R-30 around the underside from the deck at our house using a combination of fiberglass batts and XPS as I explained higher than, after which add an additional R-ten (two" XPS) on the highest facet once we tear down and re-roof? Unfortunately that sounds like It is really also uncomplicated.
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I have a fifty 12 months-old seasonal cottage within a northern climate. The simple 6/twelve gable roof is composed of real 2x6 rafters (24" oc), sheathed with 1/2" plywood and protected with asphalt shingles. There is not any insulation in the ceiling and I suspect little to no efficient insulation in the 2x4 walls. In the summertime the warmth attain inside of tends to make dwelling Nearly unbearable. I think that the biggest bang with the buck would be to address the ceiling insulation challenge to start with, but want to retain the interior appearance.
I'm opening up my home and installing cathedral ceilings, I just required to verify my plan since I received 2nd feelings reading Progressively more about it. My first final decision was to go with a vented roof technique and R38C batts. I examine a whole lot about different approaches and it still seems to me that this is the best. Livint in Atlanta GA we should offer with the two sizzling humid summers and chilly winters, so humidity Manage is a dilemma, that's why I think the vented strategy would be the best. Anyhow, I am right down to the rafters and roofdecking and furred out the present 2x6 with 6" metal studs, so I have about 11.5" for insulation. Mt plan was to produce a steady air flow beneath the roofdeck, my find out question goes in direction of to employ baffles, xps board Make baffles or insect display screen nailed at furring strips to permit for that airspace.
As The pinnacle of our area HBA, I've strenuously identified that foam about a vented flat roof assembly does not give the insulation values promised. Some builders have suggested they might just seal and stucco above the stucco vents and eradicate the air flow.
Does it make sense to spray and Slash and cobble four inch closed cell foam/board on underside of sheathing accompanied by fiberglass In the bays and one inch of eps/iso under the rafter (to prevent thermal bridging) in advance of ending with drywall? Will I produce a vapor sandwich and greater leave the final EPS and settle for the thermal bridging?
Leak inclined areas like valleys, chimneys and skylights have ice & h2o defend membrane put in For extra protection and comfort.
If you need to produce an unvented insulated roof assembly, you almost certainly don't desire to disturb the tile roofing. That implies that by far the most proper insulation would be spray polyurethane foam. Not surprisingly, the existing insulation ought to be taken out before you put in the spray foam.
If you'd like to use rigid foam, the best place to place it really is on top of your roof sheathing, not underneath your roof sheathing.
To start with, many thanks Martin to the wealth of data this website has. I've been traveling to it frequently for the previous few many years, ever due to the fact buying my to start with property. I'm also situated in northern VT, zone six but I do think company roofing able we might be pushing 7 because of localized ailments. I have just lately had an Power audit executed and needed to validate one of the suggestions. We've an area with a cathedral ceiling, in addition to a lose dormer constructed to the cathedral. The cathedral ceiling is insulated with r38, along with the shed dormer with r19. Equally are kraft faced fiberglass. The roof is twelve/twelve over the cathedral, unsure but much less on the dormer, and has snow protection (often about eight") from the beginning of January until eventually mid March.
A. As I wrote while in the posting, "Most rafters aren’t deep more than enough to support the insulation required to meet minimum R-values expected by code, particularly if the rafter bays contain a air flow channel. ...
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Recall: if you decide on to set up rigid foam in addition to your roof sheathing, don’t install air flow channels under the roof sheathing; these two practices are incompatible.
A. Possibly strategy will perform, as long as you have roofing company bakersfield at least the minimum code R-price in your roof, and as long as you employ building procedures that pay attention to airtightness.