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Questions tagged [roof]

For questions regarding the roof of a home or other structure in general, including roofing types, installation, maintenance and repair, upgrades, venting, and potential problems.

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Is it normal to see light between the plywood on a roof deck?

I am replacing my roof and needed plywood changed out due to water damage. They have completed the decking and are waiting for inspection prior to putting the other layers. Is it normal to see light ...
user188684's user avatar
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0 answers
13 views

Plastic washer placement for prefab corrugated roof

I'm putting together a prefab garden shed consisting entirely of sheet metal bracing and corrugated metal roofing. The instructions are extremely sparse. All of the bracing was connected by metal ...
BeeOnRope's user avatar
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1 answer
39 views

Temporary waterproofing hole in the roof

I have this old retired roofbox I would like to remove (has mod bit material applied over cracked glass to waterproof) and install a new skylight on a 10 degree mod bit roof. Once I demolish, I ...
amphibient's user avatar
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1 vote
1 answer
35 views

How do I address nail holes in roof overhang boards?

Our home's previous owner was a DIYer and used the wrong length nails when installing shingles, which resulted in them jutting out from the wooden boards. We got the nails removed when we got the roof ...
user188427's user avatar
1 vote
0 answers
26 views

Can a modified bitumen top layer hang suspended in the air over the gutter?

I recently had a modified bitumen roof installed on my house. During installation, the roofer extended the top layer of bitumen over the gutter and created a slight slope for drainage. However, this ...
Misagh Khayambashi's user avatar
2 votes
2 answers
55 views

How do I vent shingle roof with no attic with valley thats gets ice dams?

I am getting my shingle roof redone in the next month or so. I have a house in Toronto (zone 5) and we get a decent amount of snow. My roof can get ice dams that kick water into the house. The house ...
Caroline lexy's user avatar
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0 answers
26 views

Replace fabric roof on gazebo for metal or hard top material

I have a a steel frame gazebo with ripped canopy. Therefore, I was thinking of replacing the canopy with hard top. I have started my research and I arrived at these options 1- Ondura corrugated panel (...
Angie C's user avatar
0 votes
1 answer
73 views

Replace Playground roof

The cedar shake roof of my kid's playground is falling apart. This is the summer I do something about it. Just not sure what the best way to replace it is. The roof structure seems to be in decent ...
sassafrassquatch's user avatar
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19 views

Should Roof Sheathing Attach to Ridge Joint?

Something looks funny to me. My home inspector says that the sheathing should be attached to the ridge joint but someone else is saying that there should be more of a gap between sheathing and the ...
RogueJax's user avatar
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1 answer
37 views

Too Much Gap Between Roof Decking?

Should there be gaps between decking, on a new roof? City inspectors passed the job but they didn't actually come to the site. Apparently they pass inspections based on photos provided by the roofers ...
RogueJax's user avatar
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18 views

Can ceiling joists support the valley rafter?

Unseen roof leaks led to wood rot where the valley rafter landed on the exterior wall top plate. I cut away the rotten wood. This means I cut away not only some length of top plate but also the bottom ...
drt33ts's user avatar
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-1 votes
1 answer
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1.5" galvanized vent pipe as a fall arresting anchor [closed]

I am working on a roof design requirements. I would like to have a safety anchor other than (or in addition to) the brick chimney. If a regular drain plumbing vent pipe used would be PVC, could that ...
amphibient's user avatar
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1 vote
1 answer
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Rework Roof Design to add bedrooms [closed]

By chance. Does anyone have experience redesigning a roof. In this case, we're trying to see if it is feasible to add two bedrooms in place of the deck.
Louden Greiner's user avatar
2 votes
1 answer
51 views

What to do with nail holes from removed zinc strips?

I've got zinc strips on my tar shingle roof. They are all curled up, tearing loose at the ends, and lifting up the shingles so I need to remove them. What do I do with the holes from the nails that ...
aquaticapetheory's user avatar
6 votes
3 answers
1k views

Do very low-pitch roofs put too much outward stress on the walls?

I’m building a 18.2 feet (555cm) by 15 feet (460cm) shed, and due to local regulations it can’t be higher than 8.2 feet (250cm). Because I have a 20-inch (50cm) thick foundation structure above ground,...
Moyk's user avatar
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1 answer
47 views

Should roofers have noticed and resolved roof structural damage? [closed]

We had an inspector look at our attic because there was a cat up there one night. (He works for a company separate from the roofers but his company did our siding.) He found a truss that was rotted ...
identicaloskar's user avatar
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25 views

Roof pipe vent leak into wall

I was on my roof a couple of days ago seeing if there was tile damage after a hail storm and I noticed on one of the pipes that the pipe flashing was old and cracking and able to let in rain (Pic 1). ...
Chris Bucheit's user avatar
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Is there a standard formula or rule of thumb for how much airflow a whirlybird/turbine roof vent will achieve given a diameter and a wind speed?

I've been looking for effectiveness measures for whirlybird vents for a while and I can't find anything in building codes, and only one empirical claim from askthebuilder.com for a relationship ...
Steve's user avatar
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0 votes
0 answers
32 views

Fibreglass to Felt roofing join

I'm going to be putting a fibreglass roof on our porch, but the neighbour's roof joins ours. Their roof is felted. As I understand it, resin is not a good mix with felt as it breaks it down. Will the ...
Paul's user avatar
  • 101
0 votes
1 answer
19 views

Identifying and remedying soffit vents for proper attic ventillation

on post from the below where I noticed the roof does not meet with the fascia and soffit to form a tight seal. Is there supposed to be a gap between soffit and roof? I have continued to investigate ...
AdamO's user avatar
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0 answers
31 views

Freestanding Patio Cover Beam Size

Trying to build something like this but with a 16ft span: https://www.backyarddiscovery.com/collections/slope-roof-gazebos/products/12-x-9-5-arcadia-gazebo I'd like to build a slope roof patio cover ...
user1594257's user avatar
0 votes
2 answers
37 views

Asphalt Shingle Maintenance. Advice on on some quick repair. Exposed Nails

How are things looking on this roof? I first noticed the exposed nail heads that have worn off caulking. My plan is to re-caulk it myself (geocell 2300) while cutting some circular tabs of asphalt ...
Jake's user avatar
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2 votes
1 answer
65 views

How to pass NM cable through framing for fixture centered on gable end

I am looking to install a light fixture above my garage for my driveway. I would like the fixture to be centered, however this falls right against a stud on the framing. Is it permissible to drill a ...
CGEffex's user avatar
  • 189
0 votes
0 answers
19 views

Sun Tube glass replacement, manufacturers

I've got two sun tubes on my roof (pictured, sizes are 14" and 28") that were installed around 1997. The plastic domes are starting to look worse for wear with cracks and chips and I'm ...
DIYSteve's user avatar
1 vote
1 answer
89 views

Do These Spots On My Roof Need Repair?

We had a new roof put on a few months ago. The other week, we had a day with very strong winds. I went up on the roof today to check that everything was ok. Saw a few spots. Don't know if these are ...
RandolphRobertson's user avatar
0 votes
0 answers
68 views

Pergola roof drainage

We have a Pergola with no roof but only slats. So pergola was built with no slope. We are fixing to install a roof and am thinking of sloping pergola toward the house due to gutter system home has. Is ...
Los Alamos's user avatar
0 votes
0 answers
46 views

New Soffit Vent Design Still Bad Idea?

I recently discovered that my 1-story ranch (hip roof) has both full baths venting to attic. Upon this discovery I’ve been trying to determine best approach for venting to outside. I’d prefer to not ...
LakeHouse's user avatar
1 vote
1 answer
56 views

How do I vent 3 bathroom exhausts out the roof

I have 3 bathroom vents that all just vent into the attic. There is flexible pipe going toward the edge of the attic, as if it were going out a soffit vent, but there are no soffits here. So they are ...
chen's user avatar
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0 votes
0 answers
26 views

Best Practices for Installing Metal Vent Caps on Cast Iron Vent Stacks - Preventing Galvanic Corrosion

I'm in the process of replacing vent caps on my roof's sewer cast iron vent stacks. I have a few concerns about galvanic corrosion and proper installation: Galvanic Corrosion Concerns: I'm ...
LeanMan's user avatar
  • 101
1 vote
0 answers
37 views

How to remedy water running under shingle and fixing damage to rafter?

We just had some heavy rains and we've seen some paint bubbling on an interior wall and a little bit on the exterior. I examined the outside of the house and think I found the culprit. Here are some ...
milesmeow's user avatar
  • 5,076
5 votes
3 answers
1k views

Is HVAC heat pump condenser better mounted to a wall or a flat roof?

My home has a split flat roof. One section is 3' taller than the other. I'm considering replacing my gas furnace with heat pump. Would it be better to install the condenser unit on top of the flat ...
dabi's user avatar
  • 973
0 votes
0 answers
22 views

Adding insulation to roof rafters, air gap and eaves

I'm adding insulation to a small shed/garage which has the same roof construction method as the main house. Gable roof, slate tiles, batons, felt and rafters. I'm adding 50mm insulation boards in ...
Fergal's user avatar
  • 101
0 votes
0 answers
37 views

How to disconnect ceiling joists from wall to raise them for wall repair

I have to repair support wall framing. I will rent ceiling jacks. What is the best way to separate the joists from the wall top plate? I can't raise them while nailed to the top plate, and I don't see ...
drt33ts's user avatar
  • 11
2 votes
1 answer
109 views

What to do with these darn OSBs

So we just started replacing an old roof as the forecast seemed promising. All of a sudden, it changed to full on rain every day... We have managed to remove half of the old roof (2 out of 4 sides) ...
php_nub_qq's user avatar
0 votes
2 answers
66 views

How can I future-proof the roof of a small countryside building?

I have inherited a small countryside masonry building from my grandfather in a grass field. It's a very small building with about ~40sqm of interior space over two floors, and a roof covering the two ...
rrrrrrrrrrrrrrrr's user avatar
0 votes
0 answers
42 views

Roof: Must the entire rake be replaced if the bottom end has rot?

On my roof a rake comes down and lands on the top plate where a valley rafter also lands. A lot of water flows down the roof to this point. At some point in time it found a leak. It didn't help that ...
drt33ts's user avatar
  • 11
0 votes
1 answer
126 views

Who do I hire to install a dormer in a roof?

I want to install a dormer in my attic in order to create more headroom and open it up. This is well beyond my DIY skills, so I want to engage a trade. Should I be looking for an engineer, a draftsman,...
WOPR's user avatar
  • 355
1 vote
2 answers
64 views

How to fix a funky roof transition

I'm getting ready to have my roof replaced and trying to tick off a few odd fixes before that. One thing that has always bugged/puzzled me is the way this roof transition is framed. The roof on the ...
icurays1's user avatar
  • 199
0 votes
1 answer
65 views

Technique for strapping a cathedral ceiling

I have an older cape (1947) and am finishing the upstairs. I was looking for help/idea on how to strap the ceiling to flatten out the uneven roofing rafters. I understand on a flat ceiling you could ...
Nick's user avatar
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0 votes
0 answers
43 views

Do gable end rafters have to meet at a ridge board if the rest do?

On a shed roof, can the gable end rafters touch without ridge board, and then ridge board be connected in between them for rest of rafters? This would be for ease of raising gable ends.
Zachary Skerry's user avatar
0 votes
0 answers
40 views

Solar panel brackets not waterproofed correctly?

We are having solar panels installed. They just squirt some glue or caulking under the mounting bracket and bolted it to the roof. In the YouTube videos the installers always cover them with flashing ...
James Toomey's user avatar
0 votes
0 answers
36 views

Closed valley to open valley on clay shingle roof?

My home is about 30 years old and has a clay tile roof. I was cleaning around a skylight yesterday and decided to take a look at the valleys. The valleys are closed. There are "W" formed ...
Dennis_M's user avatar
  • 135
3 votes
6 answers
3k views

Can I raise my ceiling in my shed?

I have very low trusses on my shed. Do I need them? Is there a way to give me more headroom without replacing the whole roof? The shed is approximately 6m x 2m has six trusses going across and they ...
Mark's user avatar
  • 31
0 votes
0 answers
55 views

Attic Ventilation Help

Looking for some guidance. I've read through several other posts on this topic, but would like to get some insight on our specific situation. Any constructive advice is appreciated. We're finishing ...
PeteF's user avatar
  • 1
0 votes
2 answers
58 views

Could a new roof type exacerbate basement floor cracking?

I have been concerned on cracks in my concrete basement floor. Home is 15 years old and always had one crack in the floor leading from the walkout basement door to about the center of the basement. ...
Anne Myerscough8's user avatar
1 vote
2 answers
100 views

How can I keep water from saturating the bottom row of siding over a metal roof?

In the picture you can see water intrusion on the bottom layer of siding above the metal flashing. Was the flashing installed incorrectly? It was never sealed with caulk or anything. There is a second ...
ian's user avatar
  • 81
0 votes
1 answer
120 views

Joining 2 sides of a gable roof gutter system for rainwater collection? [closed]

A house we're in the process of buying has a North/South facing Gable roof with gutters on both sides and a downspout in each of the 4 corners. Are there any options, or sense, in somehow joining the ...
T. Cubbin's user avatar
1 vote
2 answers
429 views

Storage Limit in Truss-supported Attic?

I recently purchased a home that has access to what appears to be somewhat usable attic space. There's a 2x2 foot hatch in one of our upstairs closets that grants (not so convenient) access. In the ...
Adam's user avatar
  • 11
1 vote
1 answer
115 views

Are gable vents necessary w/ adequate active or passive ridge ventilation?

I'm about to get my roof replaced and while that is happening I am trying to correct some very outdated attic ventilation design. For context, I am in Southern Arizona so primarily hot & dry. My ...
icurays1's user avatar
  • 199
0 votes
1 answer
39 views

GFCI outlet and roof leak

The GFCI outlet in one of the bathrooms tripped and is now blinking red. It says it’s now a bad outlet. I’ve flipped the breaker to off for safety but my concern is that this is from a leaky roof I ...
Mary's user avatar
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