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3
votes
2answers
3k 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?
2
votes
1answer
119 views

How do I improve the insulation in a vaulted ceiling?

I live in a twenty year old Florida condo quadplex. The upstairs ceilings are two by four trusses of a mansard roof. I have replaced the ac, wall insulation, ducts. An IR thermometer shows huge heat ...
1
vote
1answer
30 views

Free standing shed with single plane roof

my shed/summerhouse build will be around 3m by 4m give or take. if i build it with a single plane roof, or shed roof. Will this put considerable load on the lower wall holding up the roof. The shed ...
0
votes
0answers
33 views

How do I reattach a small roof over our back door, that has pulled away from the house?

We have an older home (built around 1900). Over the back door, there is a small triangular roof covering the entrance. There are no posts, just this little roof. It is pulling away from the house and ...
4
votes
2answers
163 views

Are torch-on-roofs the best solution for a low pitched roof?

I have a low pitched metal roof and it is leaking. The roofer I spoke with says to stop the leaks they need to tear the metal off, put down plywood, and use a torch-on-roof system of roofing. He said ...
0
votes
0answers
20 views

roof planking damp

I went into the attic today to check for leaks. In Chicago area this week we have had extremely cold and snowy weather and now rain. I had the roof replaced 3 1/2 years ago down to planking. I now ...
5
votes
1answer
86 views

Hangman's Noose vs Uni Knot

Is there any practical difference between the Hangman's Noose and the Uni Knot (a.k.a. Duncan loop)? The difference I see between the two is that the coils are wound inside the loop in the uni knot ...
1
vote
1answer
90 views

How do I cap a T junction on a roof ridge?

My house's roof-ridge joins a small barn at the center of the barn's roof-ridge forming a "T". The barn does not have a vent cap. Metal flashing was used on both valleys where the house roof meets ...
0
votes
2answers
143 views

What can I use as dog kennel roofing?

I have a 10' x 10' chain link kennel (standard round tube). I'm looking at roofing options, and all of the kennel covers that I've found so far are tarps. I have concerns over the durability and snow ...
4
votes
5answers
15k views

What tool should I use to cut metal roofing?

I'm getting ready to install metal roofing on my building project. Wee! But I'm not sure how I should cut it. The roof is a simple gable, 20ft long, with 8ft rafters. The roofing I'm using is 3ft ...
5
votes
8answers
6k views

What are the pros/cons of Ondura for roofing?

I came across Ondura in Lowes this morning and had never heard of it. It looks pretty slick. Does anyone have experience with it to share? I found no matches when searching here and was sort of ...
7
votes
2answers
126 views

Maintaining a Thatched Roof

Is there anything I can do to prolong the life of my thatched roof? Should I attempt to remove moss etc?
0
votes
0answers
27 views

How to set an AC condenser on a low pitch roof?

I would like to sit my AC condenser on my low pitched modified bitumen (mod bit) roof. Can I just take some PT 2x lumber and rip it lengthwise as to offset for the roof pitch, making the top level ...
1
vote
1answer
76 views

When is the best time to install solar tubes in relation to a new roof?

My roof will need to be replaced next year, perhaps a complete tear-off. I'm also considering installing one or more solar tubes. I'm thinking it would be wise to wait for a new roof before installing ...
4
votes
3answers
21k views

What are the pros and cons of Owens Corning shingles vs. GAF shingles?

I am looking to get a new roof for my house. I have taken quotes from about 4 contractors and 3 of them are suggesting I should use GAF shingles. 1 suggests that Owens Corning is a better shingle and ...
3
votes
1answer
178 views

Are alternative roofing types, such as rubber roll, usable for a typical residential sloped roof?

I'm wondering specifically, if rubber-roll roofing, such as this can be used on a sloped roof. Or maybe if there is something akin to the stretch-and-seal tape but in large sheets that would be ...
0
votes
1answer
84 views

Is it normal for there to be tar showing from under some shingles on a roof?

I just had a new roof put on and my wife and I noticed that there are some sections of shingle that show tar like if too much tar was used. Can this be fixed?
7
votes
5answers
3k views

Should shingles have bubbles in a new roof?

I just had a roof repaired (shingles replaced) because of hail damage. As far as I can tell, everything looks good. Except for one section, there's what I would only describe as a large bubble. Are ...
6
votes
2answers
932 views

Can you skin over an existing roof deck that is breaking down?

Working on reshingling my roof. The roof deck turned out to be 3/8" plywood which is starting to break down due to the number of times the roof has been replaced. The deck is not rotting out except ...
6
votes
2answers
340 views

When is it time to replace the roof?

I've read several some of the guides out there (examples here and here) on this topic. I've found a shingle in the yard a couple times (after heavy wind/rain), and at times I've seen a few granules ...
5
votes
1answer
326 views

Will combining roof venting systems cause short cycling?

I'm looking into buying a new house here in Wisconsin that has soffit vents, ridge vents and some additional static roof vents installed. However, when the home inspector came through he said that ...
2
votes
2answers
119 views

What should I do if I'm unsatisfied with my recent roof replacement?

I had my roof replaced this past summer . The old roof was torn off and new insulation and a whole new roof. It is a flat roof, new plywood and two layer torch on, on a 12x60 mobile home . The roof ...
1
vote
1answer
23k views

What is the minimum roof slope to accommodate rainwater drainage?

I have a patio with a 13ft(4m) by 26ft (8m) Roof, the slope runs vertically down the short (13ft) side.. and the height difference from the high point to the low point is only about 10in (25cm). ...
6
votes
2answers
3k views

Can I make the contractor redo a roofing job because he didn't replace delaminated plywood?

My wife and I recently moved into our first home. It's a raised ranch in CT that was built in 1967. I've been doing a lot of "refreshing" myself inside; however, I hired a roofing contractor to ...
5
votes
2answers
4k views

What size ceiling joists and rafters should I use for a 14' span?

I'm going to build a single story addition to my home with a width of 14ft. I plan on using ceiling joists every 16" but I'm not sure which size to get. The roof will be asphalt shingles and the attic ...
3
votes
1answer
374 views

How much sag on a roof is acceptable?

I have minor sagging of my roof plywood, 3/8" thick, placed on trusses 24" apart. Is there an amount of sag that is technically okay? I could not find anything on the APA website. I am not worried ...
4
votes
3answers
3k views

Is it normal to see nails coming through the roof decking after a new roof was installed?

Our home was built in 1954, and is a Florida ranch style home. We have about a two-foot overhanging soffit with trusses that show and with tongue and groove under whatever that’s called. Sorry, I ...
6
votes
2answers
2k views

How is installing roof sheathing horizontally stronger than vertically?

Prompted by a comment in this answer: What is better for a roof, plywood or OSB? Why is it stronger to install roof sheathing horizontally? Yes, it ties in more rafters, but in what manner is that ...
3
votes
2answers
5k views

How can I prevent water from getting behind the gutter?

A friend of mine is having a water problem; the water is coming down behind the gutter. It turns out the drip edge isn't covering up the gutter completely on the one side for a considerable length of ...
1
vote
3answers
7k views

How do I finish a ridge cap?

I've installed the ridge cap, using modified 3 tab shingles. I've installed the ridge cap all the way to the other end of the ridge, but I'm not quite sure what to do now. The next shingle will ...
5
votes
1answer
3k views

What advantages do ridge cap shingles have over modified 3-tab shingles?

I'm preparing to re shingle my roof. I'm not sure if I should use ridge cap shingles, or simply cut up 3-tab shingles for the ridge cap. Do ridge cap shingles have any advantages over ...
2
votes
0answers
231 views

Can Rhino lining be used for a residential roof?

Is Rhino® lining a viable option for a residential roof? I know for many people it is cost prohibitive, are there any regulations concerning polyurethane coatings on a roof? Has this been done before? ...
2
votes
3answers
3k views

How should I insulate a bedroom in the attic?

After doing lots of research and reading lots of different opinions I would like to know what is the best way to insulate and vent a 1 1/2 story house that has a bedroom upstairs in the roof/attic ...
4
votes
2answers
1k 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 ...
3
votes
1answer
275 views

What do I need to do to finish a roof with exposed rafters on a shed

I have a shed as pictured that had never been finished completely. As such the shed has a lot of dust debris, etc getting in that should not be. What do I need to do to finish the shed. Should I be ...
2
votes
1answer
173 views

How can I tell whether this roofing material is hazardous to tear down?

I've got this little building in my garden that needs to be completely removed to make room for building a real house. To keep costs down, I'll be doing most of the tear-down myself but I'm unsure ...
6
votes
1answer
657 views

How to properly seal/cover an unused chimney?

We recently replaced an ancient chimney-vented boiler with a direct-vented one. This boiler was the only thing using our chimney. The chimney is brick and sits in the center of our 120-year-old house. ...
2
votes
1answer
109 views

How do I install roofing material on a roof with a ridge vent?

I am helping a friend repair his roof; his roof has a roof vent at the peak of the roof. I've done a few roofs, but never with a roof vent. So any help in how you roof with a roof vent? I assume ...
3
votes
1answer
2k views

Can I use roofing nails to attach OSB/plywood to studs?

My roofing nails are for nailing asphalt shingles to roof underlay boards. I have been using 2.5 inch nails to nail external wall OSBs to the studs. I have been contemplating using the excess roofing ...
3
votes
1answer
151 views

How can I achieve a randomized cedar shake shingle placement?

Other than the obvious (just eyeballing as you go, shingle by shingle), what is a good way to achieve a random-looking shingle placement on a cedar shake roof? (This particular project happens to be a ...
3
votes
3answers
541 views

Small amounts of moss on asphalt shingles?

What's the best way to remove moss from asphalt shingles?
5
votes
2answers
177 views

Replacing damaged shingles

In a recent storm a few shingles were damaged and need to be replaced, so I figured this might be a good question for the site. What's the proper procedure for replacing single asphalt shingles?
4
votes
3answers
529 views

What could cause the water from melting snow off a roof to be yellow?

I noticed today that there is a nice long yellow line of snow below my eaves. It stretches for several yards, and seems to have been caused by the melt coming from our roof. Aside from thousands of ...
6
votes
3answers
3k views

What do I do with a leaky roof in the middle of January?

I removed the ceiling Sheetrock and insulation during a bathroom remodel in my master bathroom on the 2nd floor of my house. I have snow on the roof that is melting and I found two small drips coming ...
8
votes
1answer
356 views

Is it a good idea to lay a second course of shingles over an existing shingled roof?

My shingles were a little worse for wear and I had a "friend-of-a-friend-who-used-to-be-a-roofer" come take a look at it and he said I could save some money on the demolition by just laying another ...
3
votes
1answer
352 views

Roof Showing Some Dipping

I recently walked my roof. There are some low spots, like little depressions. What causes this and should I be concerned? It seems that the plywood underneath is good but it seems like the ...
1
vote
1answer
152 views

Conservatory Roof

Our conservatory roof is made from Everlite. The problem we have is that where the roof runs into the drain is constantly filling up with soil, stones and moss. I have no idea where it's all coming ...