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
22 views

Cottage roof leaks

In a cottage that is unheated in the winter, snow sits on the eaves trough and when it melts it finds a way to seep into the cottage, run along the rafters and get leak into the living area. How can ...
1
vote
1answer
41 views

Should this roof be fixed now (shingles)?

My wife and I just bought a house, and it looks like the previous owners did a partial repair job on the roof. Shingles on the front of the house look OK, but the back not so much. I see some granules ...
0
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1answer
38 views

Water seeping through stained concrete in slab foundation - during heavy rain only

I bought a house in north Dallas, about a year ago, the house was built in 2000 and it is a single story house. There were no problems reported or found during the inspection for the foundation or the ...
3
votes
1answer
301 views

Is sheathing required under a hybrid concrete tile roof?

We have hybrid concrete tile roof that has concrete tiles attached to a dense foam backing. The roofing was installed about 15 yrs ago. In looking in the attic, I noticed there is not plywood or ...
1
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0answers
23 views

Pitch on a patio roof

Recently I decided to re-roof my patio because it has been leaking in several places. That's when I noticed that my patio had very little rain run-off. My patio is 24' wide by 17' deep. The roof ...
1
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3answers
85 views

Need a new roof but have2 gable ends and no overhang for soffit vents

I have about a 1400 square foot roof with a 6/12 pitch. The house was built in the 50's and there are no soffit vents, but there are 2 Gable ends. I need to have a new roof installed and am adding a ...
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2answers
30 views

Should I fill in holes in a roof deck before installing underlayment?

I'm getting ready to install roofing shingles on an outdoor shed/office. The roof has a small/moderate incline. At the moment, the roof just has bare plywood on it. In several spots, I needed to ...
2
votes
2answers
155 views

Covering / Cap over DWV vent pipe

I've eliminated a DWV vent pipe during a bathroom remodel (consolidated fixtures and went from 2 vents to 1) but I don't want to mess with roof patching/repairing if I were to undo the penetration of ...
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5answers
1k views

Is it possible to collect rain water from a roof for drinking use?

For a re-roofing or new build, I was pondering the possibility of capturing and purifying water for drinking use. Are there good examples of this? What roofing materials should be used or avoided? ...
2
votes
1answer
172 views

Do I need soffit vents and can I add them without taking the roof apart?

Last year, we re-roofed out 83-year old house. We removed the 3-layer cedar/asphalt shingles and laid plywood decking, 30# paper, ice-barrier and 26-gauge metal roofing. As far as ventilation, we just ...
1
vote
1answer
295 views

Gable and Roof Vents Together?

I need to add some additional exhaust venting to my attics, along with some along the soffit as well. I need some knowledge on a few things as I can't seem to find answers for them on the interwebs: ...
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1answer
68 views

Conflict with roofer [closed]

I hired a local roofer to redo my roof. One of the items in the contract is to "INSTALL 7/16” OSB SHEATHING OVER EXISTING ROOF BOARDS." The roof boards are rough sawn 3/4 inch thick pine, with a 1/2 - ...
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1answer
51 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). ...
1
vote
1answer
997 views

Attic Venting of Knee Wall in Cape Cod

I have a cape cod style home, pictured below. The second story living space on the back side of the home is created by having a lower pitched roof. So, the front and back sides of the roof have ...
2
votes
2answers
78 views

Where to start with raised deck

I currently have a flat roof over my patio which looks really solid as it is an extension of a flat room from my living room. I want to have someone come out and verify the integrity of it along with ...
1
vote
1answer
70 views

Can I insulate flat roof using this method?

I just wonder if I can insulate my flat roof in northern India by following steps as under: Apply a cover of Bitumen Cover it with polythene (for water proofing) Lay used cement bags on polythene ...
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votes
2answers
367 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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0answers
30 views

Considerations for spray foam insulation with roof replacement possible in about 10 years

We have an old house in the Philadelphia area which we bought last year. This has a slate roof and we were told by our home inspector that we'd need to consider replacing it in 10 years. It is the ...
4
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3answers
89 views

Ok to roof-over in the rain?

A buddy and I will be installing a second layer of composite shingles over the old ones already on my roof. Should we consider doing any of this in the rain?
13
votes
7answers
19k views

What is better for a roof, plywood or OSB?

While watching the builders next door do their thing, I became curious with their technique to install plywood on edges neighboring the next townhouse, and OSB for the rest (which for these narrow ...
1
vote
0answers
53 views

Does a vaulted ceiling roof need venting?

I'm buying a house in Colorado, and the house has a vaulted (cathedral) ceiling such that both the plywood sheathing and the ceiling sheetrock are attached to opposite sides of the rafters, i.e. no ...
2
votes
1answer
40 views

How to prevent squirrels from damaging pipe boots?

I have a few pipe boots on my roof that squirrels like to munch on. I'm not sure why but it creates a lot of work for me. How can I prevent this from happening again once I fix the boot? This is ...
3
votes
4answers
21k views

How to remove moss from my roof?

My roof seems to be growing moss and I'd like to remove it. I did some research and it looks like the solution is to mix water and bleach, spray the mix on the moss and then scrub the moss off about ...
3
votes
3answers
8k views

What is the method to seal a concrete roof?

We are staying in a home which has a concrete roof. Now we are facing leakage in the roof during rainy seasons. What do we have to do? How do we protect the roof from leaks?
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0answers
37 views

Is it possible to install soffits from inside of the attic?

Is it possible to install soffits on the inside? I requested a quote from someone to unblock or install more soffit vents and on the quote he wrote " more vents install by soffit". He made no ...
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1answer
202 views

How to calculate steel beam and posts size to replace existing wood beam in terrace

I have a covered terrace that extends 10' out (West) from the house towards the yard/pool and has a width/span of 32'. The current beam is made up of (2) 2x6 in wood placed side-by-side functioning ...
5
votes
7answers
10k views

Is a roof made out of glass viable?

I have thought about that if I am ever going to build a single floor house this is what I would do. I would make the whole roof out of glass (like a greenhouse). This glass roof would be made out of ...
1
vote
0answers
48 views

How to insulate roof from heat (sunlight)

I'd like to insulate roof which is over my flat in 4 store building. MY flat is the last one and every summer is a killer for me as about for 1 month a year I have constant temperature of 30 Celsius. ...
6
votes
6answers
1k views

Should I replace fallen gutters?

This past winter a heavy snow fall ripped two sets of gutters off our house, and I haven't had a chance to re-hang them yet. One is over our back door and it's really annoying having the running off ...
0
votes
2answers
67 views

Low-slope roofing

I bought a house a year ago and the section above the mudroom started leaking, so I had to tarp it. I am looking to reroof / roof-over the entire thing later this year, and I've done some research and ...
1
vote
3answers
254 views

Is this “ice damming”?

The north-north-west side of our house has a 2 foot soffit/overhang. This morning we notice that the vinyl siding of this wall is covered with icicles. It looks like water is somehow getting into the ...
14
votes
6answers
12k views

What are the pros and cons of steel vs. aluminum metal roofing?

I'm considering a new roof for my suburban home. The home is about fourteen years old and the shingles are in so-so shape. We have had two leaks already and I've been told that means it is a good ...
0
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0answers
32 views

German tile roof installed using dowels

During a trip to Germany many years ago, I saw workers replacing broken red tiles. I was surprised to see them turn some sort of crank, and the whole line of roof tiles, hooked to some sort of dowel, ...
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2answers
85 views

How to prevent concrete roof from Absorbing water

It's winter again and rainwater still collects on my flat roof due to it's bad tilt, Because of that the concrete absorbs a lot of that water into the second floors roof and it's really visible on the ...
2
votes
2answers
2k views

Ways to Safely Repair 45 Degree Pitched Roof without Jacks?

What methods can a person use to safely repair a roof that is slanted at a 45 degree (or greater) angle without using Roof Jacks? Is there anyway it is possible for a person to safely walk on such a ...
0
votes
0answers
31 views

Flow rate of water in gutter system

I am attempting to build a waterfall out of a gutter system. I currently have an awning that is 72" by 48" with 3" high (tentatively) buffers on each side to keep the water from flowing off. The ...
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4answers
3k views

Exhaust fixture for venting bathroom fan through roof

I'm planning to install a roof vent for a bathroom exhaust fan I'm putting in. I'm thinking about using one of these: but I was wondering if I need to worry about it getting blocked by ice or snow? ...
0
votes
2answers
75 views

Can I remove a furnace compartment vent that's obstructing roof repair?

There are two vents going up to our roof, one is the normal vent from the furnace exhaust straight up to the roof. But right next to it there's a second vent pipe, a little larger and single wall. ...
2
votes
3answers
326 views

Best shoes for walking on a standing seam metal roof?

I went up on my roof this weekend to do some work on an antenna and clean chimneys. It's the first time I've been up there since I replaced the hail damaged asphalt shingles with standing seam steel. ...
2
votes
2answers
61 views

Lift existing roof frame to replace top logs in log home

We have a log house with a 12/12 pitch roof. This summer we're planning to take off all the old asbestos tiles and leave the existing roundwood framing and put in new tiles of some kind, or metal ...
5
votes
3answers
188 views

Is Roof De-Icing Cable good for the roof?

Is heat tape or Roof De-Icing Cable good for the roof?
5
votes
2answers
6k views

Can a gambrel roof have outer instead of inner supports?

I have built some of the "arches" for a gambrel roof, I know support is needed so the roof doesn't collapse. Is it reasonable to run twin metal straps around the roofing diagonally on the outside for ...
4
votes
2answers
3k 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 ...
2
votes
6answers
25k views

How do I approach new water stains on my ceiling?

I am a brand new home owner with almost no experience with DIY stuff. There was a few days of significant rain and now my wife noticed some stains on our 2nd floor ceiling that we are pretty sure ...
0
votes
1answer
79 views

Low slope roof (2:12) - acceptable for metal roofing?

I'm designing a garage for my backyard and I want to obscure my view as little as possible. I've read that asphalt shingles aren't great on a 2:12 slope, so I'm just planning on using metal roofing. ...
0
votes
1answer
46 views

How should I stop condensation on my roof that's leaking into my home?

Condensation in my attic causes frost which melts on warm days and leaks through my ceilings. I plan to add more insulation this spring. I have installed a bathroom ceiling fan to help with moisture. ...
0
votes
3answers
490 views

Why should I repair/replace roof just because it's old?

My roof is old. Shingles are worn down, some are torn, and there are some nails coming through some shingles. I'm being told by some contractors there for other reasons that my roof needs immediate ...
6
votes
4answers
2k views

How to I safely anchor a safety line to a chimney?

I am going to be installing an antenna at the top of my brick chimney and I'd like to be able to use a safety line with a fall arrestor. The chimney visually looks OK. I'm trying to figure out the ...
7
votes
5answers
1k views

How can I add insulation to my roof?

I have an old 1930's house, the upstairs of which is in the pitched roof space. I've just checked and it has no insulation what-so-ever up there, so it is very much the same temperature as a loft at ...
0
votes
2answers
75 views

Optimize insulation cost / benefit

I have roof made by scheme from images. Both should be same, just different angle. I have 20cm of space yet to fill. How can I calculate conductivity in W/m2K if i fill missing 20cm of space with 20cm ...