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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3
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1answer
215 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 ...
2
votes
6answers
19k 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 ...
2
votes
4answers
3k views

Can a completely flat roof be waterproof?

I would like to build a 6 x 8 ft playhouse with a deck covering the top. Is there a kind of roofing material that can (1) withstand a floating deck, (2) is DIY friendly (no blowtorches, hot asphalt, ...
2
votes
2answers
1k views

Why am I getting a lot of condensation in new shed?

I just got a new shed built with concrete blocks and a metal roof last month and thing is dripping with condensation from the roof. There is absolutely no insulation in the shed. How would I get rid ...
2
votes
1answer
124 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 ...
2
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1answer
119 views

Can I tear down a roof with a torch? [closed]

Can my friends and I use a torch gas cutter to cut into the roof, and dismantle everything by sections? I imagine there will be some concrete layering underneath and such.
2
votes
1answer
855 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 ...
2
votes
2answers
610 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 ...
2
votes
3answers
609 views

How to address mold/moss on newer roof?

I have an old house with a new(er) installed roof shingle that's about 5 years old. In removing leaves from the gutter today, I noticed green moss? mold? around some of the areas close to the house. A ...
2
votes
2answers
637 views

Is a thick, unvented hot roof a good candidate for spray foam?

Upon removing some drywall from an unvented hot roof I noticed two serious issues: 1) The roof sheathing is not a taped or sealed ply but a 2x8 T&G 2) There is no vapor barrier and the cavity ...
2
votes
3answers
749 views

Is it safe to use a former furnace flue to vent my dryer through the roof?

Our dryer is located in the center of our house. The current vent situation has tubing that makes several bends between the dryer and the crawl space before hitting metal duct that takes it about 25' ...
2
votes
1answer
350 views

Is a roof sprinker a good idea?

I live in an area where temperatures often reach 95°F (35°C). I have attic fans and soffet vents and radiant barrier. Is it worth adding a roof sprinkler? I have read about it working wonders ...
2
votes
2answers
456 views

TV antenna moves a bit - problem?

I'm partway through installing my own outdoor TV antenna. I've gone with a "through the roof and screwed into a beam" method rather than the "sit on top of roof and stabilise using 3-4 wires screwed ...
2
votes
3answers
136 views

Insulation options for narrow ceiling space

I've got a flat roof ( wooden, sealed with tar and then roofing iron on top of that ) with a 30 cm gap between the ceiling. Not really enough for someone to crawl in unless skinny. There's no ...
2
votes
2answers
546 views

What can I do with these roof trusses to cover them up a bit?

Relating to another question about loft conversion I also want to fill up the gaps in between the trusses on which the roof tiles lie on. So during allot of build I heard here and there that some ...
2
votes
3answers
664 views

How do you calculate if it's worth it to insulate?

We live just north of NYC, and the house was built in 1906. We're putting on a new roof and trying to figure out if it's worth it to insulate too. It's a cathedral ceiling on the inside, and we do ...
2
votes
3answers
129 views

Leaking flat roof

We have a "flat roof" (actually a very slight pitch) which is made from lead with folded seams. It is rectangular, with a slight slope toward one long side where there is a gutter with a downspout at ...
2
votes
2answers
131 views

How can I reduce how much a flat roof heats my house?

My flat roof is insulated with wool, but still it's heating up my room considerably. The situation is much better in the rest of the house. Any ideas how to do a quick fix? The roof is currently ...
2
votes
3answers
2k views

How do I set up drains for a flat roof?

In the house I'm building, I will be using a flat roof with a parapet around it. The total area will be around 120 sq meter and the roof will be a concrete slab (at least 8 cm). What is the best way ...
2
votes
2answers
183 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 ...
2
votes
2answers
6k views

How do I build a Gambrel roof?

We would like to put a Gambrel Roof on a 32 x 32 log cabin we're building but I don't know the formula or how to build the Gambrel roof. Please help We're building this cabin ourselves and love the ...
2
votes
1answer
992 views

Do I need soffit vents for my knee wall attic?

I purchased a 55 year old home that has no soffit vents. The attic space consists of a knee wall attic space and peak attic space. The peak attic space has vents at each end and a ridge vent at the ...
2
votes
1answer
248 views

How do we keep a porch with a fiberglass roof cool?

We have a clear fiberglass roof on our enclosed porch. We just recently put it in. Sun pounds in and by afternoon in the summer, it is SO hot in there. We used to just open the windows and it would ...
2
votes
2answers
78 views

How can I build a shed in two halves and join them without the roof leaking?

I am building a shed and I need to build it in two halves so I can take it off the foundation if I need to. The problem is that due to the dimensions, I have to split it in such a way the split line ...
2
votes
3answers
170 views

How should I support upright posts on a slab with no footer?

We are wanting to use a structural ridge beam to put a new roof on our house. I have been talking with an engineer who said that we need to determine how big the footer is under our slab. However, ...
2
votes
1answer
248 views

Covering roof vents to keep out roof rats

I have around 20 vents on my roof and I currently do not have a roof rat problem but I want to cover them with something to prevent roof rats getting into the attic. I'm sure I can find something at ...
2
votes
1answer
386 views

How can I check for possible damage after water leaking into loft chimney?

I had a loose tile on the roof in front of the chimney breast and noticed that in the loft the internal chimney breast was a bit damp. Since then had it repaired (i.e. the tile tapped down and the ...
2
votes
1answer
200 views

Securing our roof against possums [duplicate]

Possible Duplicate: Animal in the attic (possibly a raccoon) We have just finished a major renovation of our house. Since complete, a possum has taken up residence in our roof. ...
2
votes
1answer
1k views

What are some tips for installing a roof cap?

I am adding bathroom exhaust fans. The roof caps I have attach directly to the duct (this is not the model I have, but it clearly shows how the duct attaches): I had a lot of trouble trying to get ...
2
votes
1answer
78 views

Should I keep downspout extenders installed during the winter?

Should downspout extenders be kept installed during winter? For some reason, I think they facilitate ice formation to creep up the spout? When I say downspout extenders, I mean these
2
votes
1answer
161 views

What should I do about shingles that are stuck to the sheathing?

I'm so pleased to find this diy.stackexchange. I'm in the middle of replacing a small roof above an entry-way. It is an area of about 100 square feet (9.3 square meters). The top layer of shingles ...
2
votes
2answers
376 views

How do I find where my roof is leaking?

I plan on selling my house within a year to a custom builder who will demolish it and build a new home. Recently rain has been leaking into the bedroom, bathroom, and kitchen. Exactly where in the ...
2
votes
2answers
170 views

How should I waterproof a concrete roof?

We have a 28y/o Medical Clinic in a remote area of Haiti. The roof is concrete and has one coat of DryLoc on it which is lifting off in many areas. The roof is 136' X 35' with a very slight pitch to ...
2
votes
2answers
121 views

How can I inspect and repair a roof with moss and other greenery on it?

I have a pantry on my house, its attached to the kitchen but has its own slated roof and an outside wall. I have has issues with it getting damp, I have replaced the outside door as that was leaky, ...
2
votes
1answer
695 views

How can I build a temporary support for rafters?

I have a hipped roof with 5.5 metre common rafters supported mid span by strutted purlins. The rafters, and below them the ceiling joists, are trimmed around a double flue chimney breast at the flank ...
2
votes
1answer
363 views

How do I deciding whether to install an attic venting system?

I live in Colorado, and the weather is starting to warm up. In a couple months, the temperatures will rise pretty high. Thankfully, I have a well insulated house (there is over 20 inches of fiberglass ...
2
votes
1answer
83 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 ...
2
votes
0answers
48 views

How to protect exterior galvanized flashing?

With ships, they'll bolt zinc blocks on, can I "re-galvanize" metal? I ask as I have some flashing that was likely installed in 1938. It was galvanized and is in reasonably good shape. But replacing ...
1
vote
1answer
77 views

Who do I call, roofer or plumber?

Last fall, I noticed my first floor kitchen had a leak that dripped down through the lighting fixture. This happened during a pretty strong rainfall. There is a bathroom above it but it had not been ...
1
vote
2answers
246 views

How to create a conditioned attic?

My attic has reached the point of no return with storage. I must use it for that purpose. So now I have to find a way to insulate the attic's roof. For this DIY handyman dad, does anyone know of a ...
1
vote
4answers
2k views

How can I seal around this pipe on my roof?

I have a PVC furnace exhaust pipe coming out through my roof. Unfortunately, the guy who installed it used the wrong size flange. So instead of the rubber rising upwards against the pipe, it is sunken ...
1
vote
1answer
946 views

What could cause water to not go into the gutters?

I recently installed vinyl gutters around the roof of my house, but after the first rain I discovered that the gutter doesn't seem to be catching a lot of the water. Much of the water seems to be ...
1
vote
1answer
162 views

How do I tie a new roof in to an existing roof with a pitch transition?

I added a room to the side of my house, and the new roof goes onto the existing roof. I am almost done roofing it. The image below depicts the current status. I put roofing felt down under the two ...
1
vote
1answer
116 views

Is that a leak from roof into my ceiling?

I found a spot into my ceiling that was not there before. Spot looks like this. We had rain last night and i am worried if there is a leakage in the roof. This is what is on top of it. Is this ...
1
vote
2answers
74 views

How do I stress test a roof for leaks?

I am about to have some ceiling work done on my house that has previously had roof leaks. I would like to be sure that the repairs to the roof are successful. How would I go about stress testing the ...
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vote
2answers
920 views

How to attach ledger board to under-roof siding?

I want to attach a ledger board, over the existing wood siding. Something similar to this, but immediately underneath the roof How do I determine where I need to drill the holes to attach it to ...
1
vote
1answer
109 views

Exhaust fan leaking from elbow joint connected to the ceiling

I have a metal elbow joint that is leaking. It is connected to an exhaust fan in the bathroom and runs to the roof. What can I wrap the elbow with to stop the leak?
1
vote
1answer
353 views

I need a new shingle roof, does the 12/2 minimum pitch still apply if I use peel-n-stick?

Does the 12/2 minimum pitch rule for shingles still apply if peel-n-stick is first applied to the roof deck? Why would I have to put down a membrane on 12/1 pitch above the porch, instead of shingles, ...
1
vote
1answer
1k views

How can I modify this dryer vent cap to keep lint from getting trapped?

As mentioned in this question I installed this dryer vent cap on my roof As you can see, there is a gap between the flashing and the cap, presumably to let water out if it gets in. This is ...
1
vote
2answers
39 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 ...