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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0answers
32 views

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 ...
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1answer
34 views

How does an end notch in a ceiling beam affect deflection calculations?

We have a ceiling beam that is a standard 4x8 over 12 feet. Let's stipulate that is properly sized for the weight load over that span. But, what if, in order to place that beam, we need to notch it ...
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1answer
63 views

In what order should I install roofing, gutters, and attic insulation?

I have an old ranch built in the 50's. It needs a new roof, insulation (currently no insulation) in the attic, and new gutters. It's almost impossible to find a good contractor that does it all. ...
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5answers
3k views

When should an asphalt shingle roof be replaced?

My shingle roof is 21 years old. However, it still looks good. My roof has aged well. Should I play it safe and just arbitrarily replace the roof based on time? Or, is it safe to hold off a few ...
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1answer
38 views

Roofing shingles / rainwater question

Recently I have noticed that about 1-2’ from where the roof would drain into the gutter, water is dripping over the edge of the house on the side. What would cause that to happen? No where else around ...
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1answer
23 views

Sealing coarse concrete rooftop?

I live in an apartment and I would like to seal a section of our rooftop with small leaks where water puddles (depth of puddle is negligible). The rooftop is "rough" concrete in the sense that it ...
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3answers
82 views

Should I Add More Static Vents On My Roof

I wanted to add insulation to an old ranch house. However, the insulation contractor wants to add static vents (2 turtles and 2 pipes). He says I don't have enough ventilation in my attic. The roof ...
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1answer
29 views

How to know when an asphalt shingle roof needs to be replaced?

Is there a way to inspect a roof to know whether the asphalt shingles need to be replaced?
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1answer
36 views

How to fix chimney hole in roof?

I've starting insulating the roof and that got me looking at the "old" hole where a (useless) chimney used to be. That chimney got removed for a solar panel setup. As I'm insulating, this needs to be ...
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2answers
39 views

Water dripping from soffit - problem with the gutter, roof, or something else?

We recently bought a house that has gutter guards installed. I noticed during heavy rain storms, water drips from the front of parts of the gutters, and ends up dripping onto the porch underneath as ...
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1answer
20 views

Shortening Roof Rafters for Flat Roof Addition

I'm in the early stages of planning an addition which will involve extending a flat roof out from a sloped roof. Are there reference sources/videos/etc out there discussing approaches to shortening ...
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2answers
235 views

Is it possible to get a accurate assessment of a roof without ripping it off?

I just bought a house, and knew it needed a new roof because of its age. I had a roofing company come out and inspect it. The inspector spent a couple of hours standing on the roof and going through ...
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0answers
23 views

How to remove old RV roofing tar?

In past years we used this elastomeric silver roof coating on a roof. I need to remove that to repair the underlying roof. How best to remove it? I haven't found any method that isn't tedious and ...
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2answers
42 views

Should I modify the end trusses to accomodate a gable vent?

I am currently building a detached, single car garage and getting ready to sheath the roof. I had originally specified a ridge vent but am strongly considering switching to a gable vent. I have some ...
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1answer
45 views

Old or new water damage on roof interior

I’ve been in this (100-year old) house 3 years, and this area of the roof has always had marks of past water damage. I looked at it more closely today as we’ve been having a lot of melting and ...
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1answer
62 views

Screw for concrete roof

I am installing some solar panels that measure 41" x 27" on my concrete flat roof using slotted angle bars. What type of of screws (as well as wish and length) would be best to attach to the roof and ...
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4answers
125 views

How to overwinter a roof during construction?

I am building a new detached garage, and the forecast this weekend is just warm enough that I plan to get my trusses and roof sheathing up. My sheathing is 5/8" plywood (not OSB). It's a single car ...
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1answer
52 views

Chimney still leaking despite reflashing and coating

My chimney was leaking and the contractor pulled apart the roof around it and reput it with proper sealing and coating. Then he also coated the entire chimney with Geocel siliconized seal which is ...
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1answer
51 views

How can I fix this leaky roof over a covered open air porch?

There is a small deck above this covered porch. The first picture shows right below that deck where there is small shingled roof. Below this roof is a covered but open to the air porch. When the snow ...
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1answer
26 views

Fix attached laundry room roof framing

I have a laundry room attached to the back of the house (was done by previous owner). Recently I found a leak (due to some nail wrongly on the shingle exposed). But then when I "uncover" below the ...
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1answer
37 views

2x6 span as rafter for shed with tin-roof

I'm building a goat shed - total size is 16' x 24'. The tin roof (lean-to) will run the 16' length. Can I use a 2x6 for the rafters? Could go 16 or 24" OC. Thanks. Update from responses: roof is 1/8 ...
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1answer
69 views

How to terminate cooker hood ducting

I have a probably stupid question about assembling ventilation pipe for a cooker hood. I want to vent my cooker hood through the eaves rather than go through the roof as I suspect it's cheaper, less ...
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0answers
23 views

Roof Flashing inside corner

I'm building a structure and putting a roof on it. The roof is single slope 3x12 pitch. Basically it's rectangle platform except where in the middle of the lower edge the roof extends 2 more feet so ...
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1answer
36 views

Galvanized 5V Crimp roofing screw placement with battens/counterbattens

I am installing 5V crimp roofing over an addition to my small house. The additions's roof joins the house under a 14" eave. The main house slope is 5/12 or about 22.5 deg. The addition slope is 10 deg....
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0answers
32 views

Long clout nails though rigid insulation boards

We are building a cabin with a solid wooden roof (18mm) on which shingles are nailed. An advised method of insulation is to put rigid insulation board on top, then nail the shingles using long clout ...
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8answers
11k views

Should plywood be missing on my roof?

I live in Canada and I just had my roof done on my house. I recently went in my attic and found out that some part of the roof is missing plywood :( In the following picture, there is no nails ...
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0answers
26 views

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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2answers
32 views

How can I replace missing parapet wall “joint caps”?

My home has a fiberglass roof deck with parapet wall surrounding it. The parapet wall is covered in aluminum (at least I think its aluminum) that matches the vinyl siding and color of the fiberglass ...
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0answers
38 views

How to fill in an incompletely filled in downspout on built up flat roof

I notice that water pools up over a mostly filled in downspout fairly often on my built up roof. The downspout goes maybe 3-4 inches deep before I hit a rough and very hard rubbery surface (I can't ...
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5answers
136 views

Power cable loose on roof OK?

I would like to mount a floodlight on my chimney. I'm not keen on cutting into the roof there to make an entrance for the wire. Every hole in the roof is an opportunity for water intrusion and it's ...
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1answer
34 views

Fixing water ingress at mitred corner in roof fascia

Apologies in advance for the long question - I wanted to include all the details as I am rather unsure of what I am doing! I have a 10-year-old flat roof with a fascia facing the predominant weather. ...
3
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1answer
90 views

My new roof has a few sagging spots

Not so visible in photos because of the way the sun hits the roof but very visible by naked eye. Enough for my neighbors to stop by to ask me what's wrong. I had the new roof installed 2 weeks ago ...
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0answers
36 views

Is roofing felt/felt shingle breathable?

I'm thinking of putting either these bitumen shingles, or standard roofing felt, on top of a barrel sauna to stop it leaking. While I'm at it I thought I might add some air bubble/aluminium ...
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1answer
36 views

Best roof for tropical climate

I'm building a new house and can't decide what type of roof is best. I live in a tropical country where the day temperature is always above 32 degrees celcius. The criteria I want for the roof are: - ...
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2answers
103 views

What prevents water from getting underneath these roof shingles?

I see a lot of houses In my area with roof edges where one side of shingles overlaps the other. For example: Is anything special needed to prevent water from getting underneath the overlap?
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3answers
52 views

How to taper an irregular flat roof for a slight fall

First of all, Harper gave a great answer to a similar question here, but I'm having trouble making it work for an irregular shaped roof with an angle that is not 45 degrees. My roof contains an ...
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3answers
144 views

Should I bend my roof edge away from the fascia to prevent water wicking?

Last year, I had a new fiberglass shingle roof installed by one of the better roofing companies in my area. Overall, I am happy, but I'm not sure that the drip-edge was done correctly. It seems that ...
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3answers
110 views

Truss Plate Loose where rafters meet

DIYer here. I noticed that (only) one of the truss plates popped off where the rafters meet at the peak of the roof. Thus, a single set of rafters and the supporting beam are misligned and no longer ...
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1answer
31 views

What type of paint and preparations would be appropriate for painting a mural on a rooftop?

My house has a modified bitumen membrane roof, at a very low pitch/nearly flat, which was repainted with aluminum asphalt paint a couple years ago. My friend is considering painting a mural on the ...
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1answer
120 views

Connecting downspout to first floor gutter

I am looking to connect my second floor downspout to the first floor gutter. In any sort of wind, the water misses the gutter completely and makes a big mess. I found the thread here very helpful ...
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0answers
70 views

Was my home's dormer flashing installed incorrectly?

I've lived in this home for two years now. Roof is probably at least 10-15 years old, perhaps 20 years. We started noticing some water stains on the ceiling soon after moving in. On a closer look, it ...
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1answer
72 views

Small patch in wall sheathing behind masonry chimney

I noticed a small hole, about 14” x 14” in our attic on the gable side. I wonder if it used to be a gable vent. Home was built in 66’ What can i do to patch this up? It looks like this sheathing ...
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1answer
61 views

Will my roof framing support an array of flat solar panels?

I want to install 23 305w panels on my roof. It's a flat roof constructed with 2x8 beams spaced at 24". There is no snow load to consider and we get occasional wind and rain storms a few times per ...
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2answers
80 views

Attic more drafty after roof replaced

We had our house re-roofed a few weeks ago and I noticed that my attic is more drafty. I live in the UK and my house was built in the 1960s. It is a semi-detached bungalow. I'm not sure what the ...
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1answer
52 views

Is it a problem that I see daylight through my shed's soffit?

First and foremost - please excuse my ignorance and improper use of terminology. I have a free standing garage with a mono-pitched / shed style roof: The garage is unfinished inside and I noticed ...
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2answers
91 views

How can I attach/seal around an exhaust fan duct at the roof?

I am redoing the ducting from a kitchen exhaust fan to the roof cap. The old ducting was 6" and I'm increasing it to 8" to match the vent on the new exhaust fan. The current roof penetration is a 6....
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3answers
107 views

What is this roof constructed from?

I am trying to answer questions about the construction of a roof and was wondering if it is possible to tell from the picture attached, and if so what the construction is? EDIT: The roof is difficult ...
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1answer
47 views

Is a 7 degree slope for a roof too small in a rainy area?

I want to build a car port off my house. Due to window placement the highest part of the roof could only be 10 feet above ground. It will extend out 16 feet. If I want the low point of the roof to be ...
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1answer
33 views

Water around furnace: culprit?

Problem: After heavy rain, water pools around our basement furnace. After climbing onto the roof, I found a mysterious (plumbing?) vent. This post seemed relevant, but 0.5 gallons comes in after a ...
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0answers
32 views

How can I add a roof over the existing Deck?

I know how to build a cover, I just don't know how to attach it to the existing deck. Something like this: