Questions tagged [roofing]
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76
questions with no upvoted or accepted answers
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Can I use 2x6 rafters for my garage roof?
I plan to build a 24ft x 30ft garage (28ft x 34ft with 2ft overhangs). I was planning on using 2x8 rafters, but I'm wondering if I can get away with using 2x6 rafters instead. The rafters are 24 ...
2
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82
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What are these foil covered copper shingles called? What can I learn about them?
I'm looking for anything on this style of shingle
I need to help replace a few of these, and so far have not found anything in terms of vendor, date, supply, or even a name. Other than "copper ...
2
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0
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78
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Roof Replacement Done Wrong?
Id appreciate any opinions. Just had a new roof put on. Looks worse than the old. Please see the picture. 3 areas of concern. It was put on in cold weather so that may explain the shingles, but the ...
2
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1
answer
379
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How to protect corner of roof from rain?
I have a two sided metal roof with a different grade on each side. The two sides do not meet at the center. The design incorporated vertical sky windows in the center of the roof which creates a hip ...
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51
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Problems On Rolled Roofing Section Of New Roof?
We just had a new roof put on our house a week ago. The front of the house is all architectural asphalt shingles, and the rear addition is rolled roofing.
The house withstood the first rain just fine ...
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42
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Tips for insulation above unvented bay window roof
I have a portion of my kitchen under its own roof similar to a bay window. This piece of roofing is unventilated. There is paper-faced fiberglass batt insulation in the cavity with a vertical vapor ...
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0
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167
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Drip edge replacement
The drip edge on my house is peeling back and wasn't noticed until significant water damage to the soffits occurred. Doesn't seem like it was ever actually fastened to the sheathing with nails, nor ...
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34
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How to replace subfloor under torch-on deck
A friend has a deck that is exposed to the elements, and the sub-floor is rotting. The finishing is torch-on roofing with a coarse granular finish.
I would like to help him replace rotted sections of ...
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0
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174
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Is it proper to have shingles at the bottom of the valley where the fascia is be 3 inches above the roof deck?
The shingles at the bottom of the valley are not laying on the roof deck, they are bridging across leaving a large gap between the shingles and roof.
Is this normal?
1
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0
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339
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Neighbours guttering running onto roof
Hi I have just got home to see our neighbour at the back has put guttering running straight onto our outhouse roof. I wondered if this was allowed or should the pipe be going right down to the ...
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750
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Onduline / corrugated bitumen roofing: better to use nails or screws for fitting?
I'm about to lay Onduline on a 25° roof and am undecided as to which fasteners to use.
Most guides seem to use the nails, and many don't even mention the availability of screws.
In my mind screws will ...
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0
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223
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Metal roof decking is rotting along edges
I'll try to keep the backstory short: My family has an old WWII era camp that was reroofed a couple years back. At the time, money was tight so the hired help was maybe not the best.
We're ...
1
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0
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211
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What's the best way to protect plastic drain waste vent pipes from UV damage on a roof?
What is the best way to protect plastic plumbing waste vents (DWV) where they extend above the roof? PVC discolors and gets brittle in the sun, solid ABS gets chalky, foam cellular core ABS bends ...
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0
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135
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Air sealing vent baffles in cathedral ceiling
I am reroofing my house. I am taking the opportunity to pull up the decking above the cathedral ceiling and adding air baffles to help cool the roof and reduce ice dams.
In order to accomplish this, ...
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143
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Building Rafters for OutBuilding
I am going to be constructing an outbuilding for livestock. It will be 32 ft. x 32 ft. I plan to use rafters instead of trusses. Is it OK to use 2x6's with 48 in. OC for the rafters at a 3/12 pitch? I ...
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0
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554
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How to redirect water pooling behind skylights
I have a pair of skylights in my roof that leak every time it rains. I've tried silicone and a roofing sealant along the edges.. still leaks. During the last storm heavy rain I went up to check it out ...
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305
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Cooker hood venting close to eaves
I have had a new single story extension built to first fixtures; this includes a new kitchen area. Building Control (UK), will not sign off the extension until an extractor hood is fitted with ...
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0
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71
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How to determine source of this roof leak?
As Irma pounds our house I was in the attic and noticed we have a roof leak but I can't figure exactly where it is coming from. The obvious place is where that exhaust vent is penetrating, but it is ...
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2k
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calculating waste factor for hip roof w/ valley using cedar shakes
I've been told that my hip roof would result in a whopping 30% waste factor with cedar shakes, that three additional squares of shakes are needed above the amount required to cover the raw square ...
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0
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148
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How to add/retrofit birdstop to tile roof without removing tiles?
Is it possible to add "birdstop" to the edges of a Spanish tile roof without having to take the tiles off? Is there something on the market that can be screwed to the facia?
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31
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Installing CT-4 vent for dryer - found 2 strange small holes - what are they and should they be blocked/covered?
I recently had a CT-4 vent installed to exhaust my dryer through my attic(it was the only way).
I turned on the dryer to test the connection and I felt some air blowing out. I found the culprit was 2 ...
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0
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29
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Vent cap came off, there's no fastener holding it
I did bathroom remodels recently.
Then there was a strong wind a few days ago, and one of the vent caps came off of the roof.
Today I went up on the roof to find out there's no hooks on vent to hold ...
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0
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75
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How to properly top a parapet wall with coping stones?
I have a flat-roofed extension with a parapet wall (built by previous home owner). The parapet is topped with once weathered concrete coping. The extension is about 15 years old and - I think - the ...
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31
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Should a canted bay window roof have soffit?
We have a two story house are repairing some leaks above the canted bay window in our living room on the first floor. We got the leak stopped, pulled out the ceiling and affected insulation. After ...
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56
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noticing some water leakage from my townhouse neighbors downspout, how to diagnose the leak and blame my neighbor
I noticed some water leak marks on my wall under my roof corner and went up and found this. My townhouse neighbors downspout leaned over onto my property line connected to his drain hole with a big ...
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0
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9
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Rake Boards & Rake Cladding
What is the proper term roofers use for rake board cladding, as opposed to fascia board or fascia wrap?
What should rake board cladding be called on a roofer's estimate or roofer's contract if it is ...
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0
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57
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Do I need soffit vents if I have an attic fan?
We are in the process of replacing our roof. Our roofs aren’t long enough for Soffit vents and we have loose insulation in the attic. Our roofer is installing a ridge vent at the top but no intake ...
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0
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16
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Roof flashing material and thickness
For residential roofs, what is the most common metal to use for step flashing and apron flashing, and what would you recommend? Is there a particular thickness I should request for step and apron ...
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0
answers
55
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Vinyl Siding Holes
What would the reason be for holes or snips in multiple places on vinyl siding but all in the same relative location just at different parts of the roof, with all at the ends of a bottom panel of ...
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0
answers
36
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Scuffs on Newly Installed Roof
I just had my roof replaced. The roofer installed Owens Corning TruDefinition DURATION COOL PLUS asphalt shingles.
When I was inspecting the roof I noticed some scuffs and chips. Asked the roofer ...
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51
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Roof Structural Issues
We are in the process of buying a house and our inspection report came back with some separation in the trusses of the roof on one side of the home.
I don't anything about roofs. Can someone provide ...
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0
answers
66
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The effects of overinsulating my finished ceiling?
I am planning to cover my finished drywall ceiling with Rockwool 80 insulation for acoustic treatment. Insulation will be covered with wood panels for a nice finish. The ceiling is vaulted and there ...
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0
answers
96
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Will larger gutter solve overshooting problem?
Due to the structure of the roof, the water from several planes goes into one spot of the gutter, which causes severe overshooting problem even with clean gutter, as one can tell from the water marks ...
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96
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What is the black stuff they put on NYC chimneys?
Mine has begun to crack so I want to give it another once over coat
and also silver coat it - is the stuff they use Karnak 19 Flashing Cement or something else?
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80
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Barn Roof Overhang Repair / Attaching Purlins
I have a ~3000sq/ft barn which has overhangs on either side. They are a bit "off the cuff" in their design and I'm working on repairing them. The "purlins" (I think that is what ...
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74
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Flashing repair question
Does anyone have any suggestions on correcting this roof flashing? Leaking occurs during storms and when water is directed under the flashing that extends on the shed roof. The existing house roof ...
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0
answers
28
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Water roof leak
Wondering If should bypass spreader to lower gutter
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54
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How to paint brick and galvanized flashing together?
I recently changed the chimney flashing on my house and removed a lot of old roofing tar around the flashing. This caused some discoloration on the bricks, so I'd like to do what the previous flashing ...
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1
answer
71
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Is Tri-Ply an acceptable underlayment for shingles?
My handyman wants to use GAF brand TriPly underneath the new shingles he's installing for the roof repair project. It's a small area and we had half a roll left over from the shed roofing project. Is ...
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36
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Water collecting on timber outbuilding ceiling (inside), possibly structure related, causing water damage (is the structure the cause?)
I have a problem with a timber outbuilding built this last summer. I'm wondering if the problem is related to the fact that I asked the contractor to omit the insulation and internal OSB skin (to save ...
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0
answers
404
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End caps for standing seam metal roof
I've installed a standing seam metal roof as shown below:
Any ideas how I can approach the seam terminations shown above?
Here's a top view detail of one standing seam termination, showing where I've ...
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1k
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How much R-value do you need to insulate a garage ceiling with exposed 2x6 rafters in Zone 4?
We would like to insulate and drywall the garage ceiling to work on projects in the cold winter and hot summer. (We'll probably install a mini-split or something similar, too.) This question is ...
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110
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12x24 gable end porch addition
I'm adding a gable end porch to my house. I want a 12x24 covering so I have 6x6 post and 2- 2x12 beams attaching to the house on both sides. im using structural trusses so no need for headers. My ...
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764
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What is this pipe in the attic for?
I see this silver pipe in the attic that doesn't seem to lead anywhere. There is a hole in the wood, maybe it used to go outside? Right now the hole is covered, probably with the roofing.
Just ...
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185
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Flat roof, where electric mains enter via conduit, leaks in heavy rain - does a cover for this exist?
I have a section of the roof on my house that is flat, and across the roof runs a conduit that carries electrical from the main panel to subpanel. In very heavy rain, water enters through a square box ...
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159
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designing a cross gable roof with a doorway
I am trying to attach a gable roof perpendicular to an existing one,but looking for some help in joining two perpendicular/cross gable roofs with a one door headroom. It is because the existing gable ...
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94
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Advice installing a vent on roof
Installed a new bathroom fan today and realized the ducting is way undersized. 9'x15' room and a very tiny fan with 3" ducting. I replaced it with a 110CFM Panasonic fan.
So I can't use the ...
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137
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Spray foam on roof and HVAC
I am re-foaming my flat roof (residential home). Typical process is to remove existing foam, then spray on ~1" of new foam, and after that, apply two coats of elastomeric which protects the foam ...
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72
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What are the proper steps to replace a poorly installed dryer vent in an old flat roof in Phoenix?
The dryer vent extends from a utility wall in the center of the house directly up and through the roof. The current penetration is a simple hole with a dome screen topped by a vent hood.
I believe ...
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48
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Aluminum roofing over shingles
Can I reroof my garage with aluminum panels, but go over the existing shingles? I’m fairly certain they contain asbestos and don’t want to remove the old.
Surface is plenty flat and planar, and I can ...