WDR Roofing Company Austin - Roof Repair & Replacement
Austin, TX, USA
That appears to be really attractive: go with R-thirty on the underside of the deck at our dwelling using a combination of fiberglass batts and XPS as I explained over, then add an additional R-10 (two" XPS) on the very best side whenever we tear down and re-roof? Unfortunately that appears like It is much too simple.
Can I get some far more commentary around the "full roof" of Ice & Water Shield? I believe this had really little to do with the failure. The explanation why I request is I have an analogous "complete roof" layout developing, HOWEVER, the rafter bays are all straight runs with soffit vents, constant vent baffles (one/two" plywood) and ongoing ridge vent. Dense pack cellulose, two" XPS down below 2x10's, air restricted drywall (XPS might be sealed up as well).
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November 18, 2011 Picture 1 of three A leaky ceiling doomed the roof sheathing. The ceiling of this ten-year-previous household was Lower for an electrical box, and also the outsized gap was never caulked. Moisture-laden air entered the rafter bays through these cracks. In the event the humidity encountered chilly roof sheathing, it condensed, leading to humidity accumulation and rot. (The rubberized membrane inside the Image was employed as A brief patch for any hole during the roof, and didn't contribute on the failure system.) Graphic Credit rating: Peter Yost A leaky ceiling doomed the roof sheathing. The ceiling of this 10-year-previous household was Reduce for an electrical box, as well as the outsized hole was never ever caulked. Dampness-laden air entered the rafter bays via these cracks.
As The pinnacle of our local HBA, I have strenuously identified that foam more than a vented flat roof assembly does not present the insulation values promised. Some builders have recommended they could basically seal and stucco in excess of the stucco vents and do away with the ventilation.
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Slash-and-cobble is an insulation system used by some homeowners, but under no circumstances by insulation contractors. It entails chopping rigid insulation into slender rectangles, and inserting the rectangles concerning rafters or studs.
The high density fiberglass is so considerably more dense as opposed to medium and small density fiberglass that it seems like it need to decrease the probable for convection within the batts, but at 2 to three occasions the cost of medium density fiberglass batts the obtain could be nominal rather than worth the additional cost. Many thanks for sharing your experience,
Thorsten Chlupp is in a very A great deal more difficult local climate and he appears to be accomplishing good with straightforward unfastened fill around the attic ground....not surprisingly He's using "sufficient" amounts (cellulose galore)and he has baffles near the soffit.
Whilst roof air flow will help dry out damp roof sheathing, it’s vital to limit the stream of drinking water vapor escaping from the home so that the roof sheathing never will get damp to begin with.
2. I think your proposed element will be tricky to Develop. How simple is it to harmony about the rafters as you put in the membrane, presumably with staples, and after that set up the 2x2 spacers, presumably with nails or screws, all without Placing a foot between the rafters? I wouldn’t want to do it.
Hi Every person. I see I am a little late for the get together on this thread but I hope an individual can even now aid me. From my topic line you are able to see I have fairly the house. I am the house owner and pissed off with my leaky roof. I live in WI and my roof has asphalt shingles.
If you want to create a ventilated insulated sloped roof assembly, pick a form of ventilation baffle that is usually put in in an airtight way. Web site-crafted baffles are best.
Set up rigid foam insulation previously mentioned the roof sheathing and air-permeable insulation in between the rafters. This sort of assembly is made to dry to the interior, Hence the assembly should in no way include things like an interior polyethylene vapor barrier. If you choose this method, it’s feasible (however not necessary) to install vent channels between review the best you can try this out of your rigid foam and the best layer of roof sheathing by installing a number of parallel 2x4s — a person higher than Every rafter — extending from soffit to ridge. (To learn more on this technique, see How to put in Rigid Foam On Top of Roof Sheathing.)