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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2
votes
2answers
96 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 ...
4
votes
3answers
156 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
22k 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
140 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 ...
3
votes
4answers
23k 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 ...
0
votes
0answers
51 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 ...
0
votes
1answer
653 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
11k 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
56 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
2k 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
147 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
259 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 ...
0
votes
0answers
37 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, ...
0
votes
2answers
144 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
4k 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
60 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 ...
1
vote
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
128 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
1k 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
92 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
196 views

Is Roof De-Icing Cable good for the roof?

Is heat tape or Roof De-Icing Cable good for the roof?
4
votes
2answers
4k 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
30k 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
146 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
67 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
576 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
79 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 ...
1
vote
0answers
73 views

What type of furnace vent pipe is this?

I need to extend my furnace vent pipe up 2 foot above the ridge of my roof to comply with IBC. So I need to couple this pipe somehow and extend it up. Any idea what type of pipe this is and how I ...
0
votes
0answers
35 views

concrete and slate roof has started to leak

I have a house with a concrete roof with slates stuck on it (probably using gypsum). The roof is pitched, I would guess somewhere around 20 degrees. It has started to leak in a few locations. Can ...
0
votes
1answer
148 views

Condensation at roof, down outside of furnace/water heater vent. What is happening?

I am getting condensation dripping down the outside face of my furnace vent at the roof. I think I know why this is happening I'm just curious how to remedy it. There is a cast iron exhaust pipe that ...
5
votes
2answers
5k views

How can I patch holes in the roof left by satellite dish removal?

My house came with 2 satellite dishes mounted to the roof around the same place. I've never used them. Recently, wind managed to push them down so that one came down completely and the other was ...
2
votes
1answer
1k views

Moisture/Dew on Roof in Morning

I just had a new roof installed and it looks decent enough. They replaced my metal ventilation with some plastic vents, which is fine, but I'm not sure if it was enough. I had a two layers of asphalt ...
0
votes
0answers
62 views

Extending the back of our house

We are going to be replacing our entire roof with a metal roof this summer. I was wondering if it would be possible to extend the back of our house before we put on the new roof. We would have to pour ...
0
votes
0answers
38 views

I need a blue print or measurements on how to build a barn roof

I am building a 16'x 16' shed and would like to get a blue print or mesuements on how to build a barn roof on the 16' shed
3
votes
2answers
624 views

Roofing solution for “dead valley,” where one plane goes into side wall?

Problem I am reworking my roof on the front of my house. The previous roof had been leaking down the corner of the house where the garage and porch roofs come together. The previous roof had a sort ...
0
votes
0answers
28 views

How do I clean a white cement Spanish-type tile roof?

I have a white cement Spanish type tile roof that is very dirty. What is the best way to clean it? Can I power wash it?
1
vote
3answers
270 views

Should I add wood sheathing to a metal roof car port?

I'm making a carport that is about 10 feet wide with 2x6's for the "roof frame" and 4x6 posts. I was going to use a medal roof using tin I think. Do I first need to put down wood sheathing? Or can I ...
3
votes
2answers
824 views

Which flat roofing system requires the least maintenance?

I am a board member of my townhouse homeowners association and our townhomes are unfortunately very tall (need a lift or 60 ft ladder to access the roofs) and also the builder made the roof one single ...
6
votes
4answers
16k views

Does water dripping through my soffit indicate a problem?

When it rains, water drips through the soffit and along the inside face of the fascia. This picture shows the water dripping through, but when it rains harder sometimes there's more: My landlord ...
1
vote
2answers
78 views

How to stop this small roof from leaking?

We have water stains in the ceiling drywall underneath this small section of roof. I suspect it's due to the loose metal that's on top of the shingles. The fasteners on the top of the metal are ...
0
votes
0answers
94 views

Fixing glass onto a porch roof

Ive made myself a fairly large porch area on the front and side of my house. Im in the UK but Ive always liked American style porches, so ive ended up with a porch that is 7.5m along the front and ...
4
votes
3answers
4k views

Do I run screws through the “tops” or through the “bottoms” of the corrugated steel in roofing?

Suppose I want to cover a roof with corrugated steel sheets. Imagine a sheet laying on the roof. It will have "tops" - zones that are further from the roof surface and "bottoms" - zones that are ...
2
votes
2answers
1k views

What's the true longevity of exposed fastener metal roofs?

I want to replace my roof. Exposed-fastener metal roofs are popular and common where I live, but nobody nearby has owned one long enough to really comment on the longevity. I worry that over time, the ...
4
votes
3answers
272 views

Will foam-filling this gap create problems?

I'm trying to find out if I can spray-foam fill a gap in my ceiling. I have an almost-flat rubber roof, 1" foam, wood planks, then a gap created by 2x6s, then the sheetrock ceiling. I'm in PA, climate ...
7
votes
2answers
2k views

Do I need to add roof vents if I close off a small attic space in the garage?

I have a small section of roof over the front of my garage, which I would like to insulate and drywall (making my garage fully insulated). It is 39" high, and 54" by 17', framed with 2x4 trusses, ...
11
votes
3answers
6k views

How do I handle significant snow and ice dams on a 4/12 gable roof with ridge vents?

It is our first winter in a new-to-us house, that has a pretty flat roof (3/12-to-4/12 pitch), and a ridge vent along the entire top of the roof. We just had the snowiest December on record ...
4
votes
3answers
2k views

Can you use plywood as roofing?

I've seen buildings where plywood was used as both wall sheathing and siding. T-111 is commonly used this way, for example. Would it work to do the same thing on a roof? I assume it wouldn't last ...
1
vote
2answers
247 views

Hardware (clamp and/or spacers) to mount a horizontal pipe to a roof?

Related question: What is this called (adjustable angle pipe footplate)? After posting that previous question, I began to think that there's likely both a cheaper, and sturdier way to accomplish what ...