WDR Roofing Company Austin - Roof Repair & Replacement
Austin, TX, USA
Other than inquiring you viewers for an evaluation of my plan, I've A different question introduced about by considerations expressed by a local builder. He is worried that as soon as the AC ducts are Within the conditioned Place that the ducts will likely be vulnerable to sweat and will drip throughout my home furniture.
Eventually (I promise This really is my last subject matter). Regarding my fiberglass batts: Will the dealing with that arrives with it retard the drying out approach that I explained earlier mentioned (does it make a difference what facet I put it on within the purlin cavity?
Inside of a phrase, no — the code explicitly forbids this technique. Cellulose can only be used in an unvented roof assembly if there is an suitable layer of rigid foam above the roof sheathing or an sufficient layer of shut-mobile spray foam beneath the roof sheathing. Cellulose alone won’t function.
I'm opening up my residence and setting up cathedral ceilings, I just needed to verify my plan considering the fact that I acquired next feelings reading A lot more about it. My original choice was to go with a vented roof technique and R38C batts. I browse a lot about different approaches and it nevertheless seems to me that This is actually the best. Livint in Atlanta GA we really have to deal with both of those very hot humid summers and chilly winters, so humidity Manage is a dilemma, that's why I believe the vented technique will be the best. Anyhow, I'm right down to the rafters and roofdecking and furred out the prevailing 2x6 with six" metal studs, so I have about 11.five" for insulation. Mt plan was to create a ongoing air flow underneath the roofdeck, my issue goes towards to use baffles, xps board Create baffles or insect screen nailed at furring strips to recommended you read permit for the airspace.
We make sure that our service Specialist businesses carry any applicable condition-degree trade licensing for your services for which we match them to consumers.
I'm a little bit stumped on this a single - I would like to vent this roof assembly, but I can not say whether there'll be a normal convective circulation as there might be with rafters sloping with the roof pitch. My rafters are managing degree but they sit on parallel curved major plates. I'm able to use twelve" rafters and make 10" of batt do the job, leaving a lot of air flow space. I can drill the tops with the engineered joist flanges to allow air flow 'up-slope' (perpendicular on the rafters) and also from the rafter bays, And that i can provide continuous perimeter air flow (Cor-A-Vent strip) at my roof fascias (eave, ridge and gables).
If you need to make a conditioned attic, this information tells you what you have to know. For more information on The subject, see Developing a Conditioned Attic.
I don't have a great deal of place over or beneath the roof structure for insulation / venting. Would a flash / batt unvented assembly get the job done beneath The only sheathing deck? My insulator has accomplished A good number of of these locally.
I believe you mean this: Your cathedral ceiling is presently uninsulated. When you're indoors searching up, it is possible to you can find out more see your rafters. Higher than the rafters it is possible to see a layer of boards. Is that appropriate?
The investigate this site precise design and style revealed was for your Passive House. The roof thickness & usage of a service cavity may possibly look like overkill for most projects, but If you would like an airtight lid, a service cavity will get you there - completely... And allow you to wire and light-weight the interior.
I checked out the unvented schematics and I'm not certain that fits the Invoice for up in this article (Canada - west coast).
In the choice, if we can't do a ventless roof that way, can we attain our whole insulation needs by combining the above mentioned and down below deck R-Values if we prime all of it with a vented about-roof? Many thanks for your time and your information! Dan
To circumvent moist inside air from getting in touch with chilly surfaces near the ridge, You'll need a authentic air barrier and a true insulation layer. The proper way to repair this issue is to show the rafter bays -- possibly from higher than or down below, It really is your choice -- and pull out the fiberglass insulation. Put the fiberglass inside a dumpster. Then fill the rafter bays with spray polyurethane foam.
one. Get rid of the can lights and throw them away. Recessed can lights ought to under no circumstances be mounted within an insulated cathedral ceiling.