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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1answer
48 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
24 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
31 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
55 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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1answer
163 views

Can I stick a tarpaulin using a nylon Velcro(Hook and Loop) in my wooden roof?

I have a wooden roof and I want to cover it with Vinyl Tarpaulin. I am further covering it with tiles to prevent damage from UV rays. Is it possible if I attach one part of Velcro with my tarpaulin(by ...
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4answers
5k views

How to properly ventilate a Mansard Roof?

I recently purchased a home with a Mansard roof, I had some roofers come to give quotes to replace the top (it is finished) and they all recommend adding ventilation (known issue with Mansard's). The ...
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2answers
1k views

Name the architectural feature of thin strip of roof on side wall connecting gabel end points?

Is there a specific name for this feature: I think this is purely for aesthetics, generally a horizontal mini-roof that connects the lowest points of a gable end. I believe it's to visually break up ...
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3answers
94 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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2answers
4k views

Should I seal these areas in my roof?

Our home has some areas where the different pieces of roof meet the primary roof. These may or may not meet the criteria for "dormers." I recently had a local worker do some caulking & painting. I ...
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1answer
33 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
22 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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4answers
9k views

How should I connect two beams to a post at a corner?

I'm constructing a 15'x20' screened porch. I've completed work up to the footings, posts, ledger, and joists. I'm now ready to install 4x4 posts around the perimeter which will hold 2x4 bottom plate, ...
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4answers
16k views

Is it more work to replace or remove a skylight?

We have a 20 year old leaking skylight, and right now I am contemplating either removing or replacing it. Not exactly sure why it is leaking, perhaps the flashing is bad, but it's leaked for a while. ...
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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
25 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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3answers
99 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 ...
4
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1answer
109 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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2answers
116 views

Removing Roof Caulking from Jeans After Roof Job?

I'm not exactly sure where to post this question. I've checked a bunch of places on Area 51, and many of the clothing specific StackExchangess have been closed. I figured that the people most ...
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2answers
30 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 ...
4
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3answers
15k views

What is the max distance between top of gutter and the roof tiles?

I am about to replace my gutters, one guide I have read say the gutter should never be more then 30mm below the bottom of the roof tiles, another says 50mm. What is the reason for this? What is a ...
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2answers
1k views

Will I be able to run a duct over the wall to a soffit vent for a bathroom fan?

I have a small bathroom with exterior walls in an area of my home with a vaulted ceiling (and thus no attic access.) When I moved in, the exhaust fan was uselessly "exhausting" directly into a ...
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2answers
143 views

How to prevent water coming off the edge of a roof with no gutter?

On the side of our house that is perpendicular to the main roof ridge the roof (the ladders?) extends further by the ridge than it does down by the eaves. As a result, rain that hits close to the end ...
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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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1answer
90 views

Raining inside workshop

The place where I do my diy stuff keeps getting wet because whenever it rains the water gets inside through the roof, the roof looks generally like this stock photo of a tile roof (this is not my roof)...
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1answer
32 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. ...
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2answers
61 views

Moving awning support column

I'm wondering if it would be possible to move this support column 1 meter to the left, so that it lines up with the start of the sliding doors instead of being in the middle of it. Would I need to add ...
3
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1answer
83 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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2answers
76 views

How can I identify the cause of ceiling water damage?

Just wondering if there is an easy way to tell if water damage on the celing is a result of a roof leak, or condensation build up in the house. Here are some pictures: https://photos.app.goo.gl/...
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0answers
33 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 ...
2
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1answer
155 views

Rafter load capacity

I have a 1929 craftsman house with dimensional 2x4 rafters on 24" centers. They're about 13.5 ft long, spanning 11.5 ft each (measured horizontally, wall to ridge beam) at a 7:12 pitch. About 25% of ...
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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
101 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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2answers
66 views

Can I approximate flow rate of a roof with known flow rate of another roof?

My main building roof I need to know the flow rate (FR, for example Litre per minute) of water coming out from the gutter of this roof. The easiest way would be catching the flowing water coming out ...
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2answers
13k views

When should I consider using Plastic Round Cap Roofing Nails?

I'm getting ready to shingle a roof for a shed/outdoor office and I'm confused on if/when I should use plastic round cap roofing nails: I haven't seen these used in any instructions (including the ...
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3answers
49 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 ...
3
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2answers
5k views

Why are the shingles blowing off my year-old home?

My house is new construction and approaching its one year warranty anniversary mid April. The house has its back to a cornfield where it gets pretty windy.. i think the highest this year way 65mph.. ...
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3answers
112 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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2answers
2k views

What are the advantages and disadvantages of elastomeric coatings versus shingles?

I'm ready to reroof my house and want to consider an elastomeric coating rather than replacing the existing shingles. I'd use a local contractor either way
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1answer
60 views

tools and material to seal and shape concrete rooftop lip?

How can I seal the concrete lip in this building's rooftop? This lip is about 5" wide, and I need to seal it. At the same time, it needs to be even with the rest (ie.it needs to look "square" ). ...
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3answers
105 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
56 views

Material for short-term sealing of cement patches in EPDM roof?

I recently had a contractor install solar panels on my EPDM rubber roof, and they cut some fairly large square holes to pour concrete and attach bolts for the rails (long story). The problem is that ...
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1answer
90 views

Very localized heat loss

I have a heat loss issue that is very localized to directly up from my septic vent pipe. There’s no heat loss anywhere else. What type of contractor should I be calling? Insulator (I’m thinking no ...
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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
112 views

Too much water…coming into my downspout

I live in a Townhouse...I'm second in of 4 Units...I'm at the second to highest level and then the unit beside me is higher again. I'm the only unit with a downspout in the backyard...we have ...
3
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0answers
64 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 ...
2
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1answer
69 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
59 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
72 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
87 views

Some powdery substance on roof rafters

I notice some powder substance on roof rafters in the attic. Its only at few places. Does anyone know what exactly it can be?