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
5k views

Is it better to vent a bathroom fan out the soffit, the side of the house, or the roof?

Working on a friend's house, we're installing a bathroom fan. He had planned to vent the fan out the closest soffit, which is only a few feet away. I'm trying to persuade him to vent it out the roof ...
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2answers
718 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 ...
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1answer
565 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
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1answer
172 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 ...
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1answer
235 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 ...
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1answer
162 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. ...
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1answer
922 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 ...
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1answer
248 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 ...
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1answer
321 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 ...
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3answers
1k 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, ...
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1answer
453 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 ...
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1answer
584 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 ...
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1answer
208 views

Mould on the inside of a bitumen corrugated sheet

Attached to the end of our house is a small shed. It has four (newly built) brick walls and a bitumen corrugated sheet roof. The shed was finished about eight months ago and is fairly waterproof. ...
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1answer
244 views

Are 38mmx72mm roof trusses sufficient for a 6m span?

My roof truss timbers are 38mm x 72mm on 600mm centres with a 6m span. What's that in good old inches? It seems a little skimpy to me; is this normal for a modern house? I am trying to do a rough ...
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1answer
586 views

How do I repair a small rips in roofing felt from inside the loft

I have a normal UK type “cold” roof, with interlocking tiles over the roofing felt. There are a few small rips in the felt about 5cm or 10cm long; I rather not have to get all the tiles removed to ...
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1answer
152 views

Would this solution work with my dehumidifier?

I have a shed built with concrete blocks and a metal roof, terrible condensation in it and every time I go in, I see water on the walls and floor as well as drips on the metal roof. The shed is not ...
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1answer
91 views

Why am I having an attic ventilation problem this year when I didn't last year?

This winter in the attic I noticed ice on the roofing nails. Obviously warm moist air condensed and then froze on the cold nails. When the weather broke and warmed up a bit, I was back up in the attic ...
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1answer
239 views

Can I use a threaded rod for a rafter tie?

Long story short: I am working on a 1960's house with no rafter ties. The rafters themselves are now attached with screws and strong-ties (previously just double nailed!) but I don't have faith in the ...
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2answers
515 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? ...
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2answers
197 views

How can I find the source of a leak?

We have a lead lined, concave roof on a bay window. The roof itself has a small drain. Inside the house, below the bay window we have a small leak that occasionaly appears when it rains. I have ...
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1answer
1k views

How do I avoid condensation issues with an insulated garage roof?

Yesterday it was raining (slight overexaggeration of course) :-) inside my garage... Hood of the car was covered with nasty orange water spots. It's an attached garage. There's no garage "ceiling" ...
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1answer
116 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 ...
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1answer
3k 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). ...
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0answers
141 views

Can I repair damage caused by a roof leak myself? [closed]

To fix the exterrior wall, inside the wall and interrior wall can I have friends who are builders help me or do I have to go with a contractor? Also do I need a building permit for this. I had my ...
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2answers
317 views

How can I best seal this gutter to the flat rubber roof of my garage?

I have a standalone garage built into the side of the hill. On top is a rubber roof that appears to be in decent shape. However, there is a gutter around the edges that is not sealed to the roof. ...
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1answer
231 views

Where to find glass 'support' requirements?

Where could I go about finding the maximum safe span of a pane of glass for a specific width? I.e. say you had two rafters, X meters apart, with glazing bars, supporting a pane of toughened glass ...
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0answers
636 views

Is a roofing company responsible for fixing a leak and water damage 2 1/2 years after roof replacement? [closed]

I bought a new home two and a half years ago. The previous owners has the roof replaced before we closed as a condition of the sale. Now, at the corner of the screen porch, there is a place where ...
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1answer
201 views

Coordinating colors of brick and roof [closed]

What colour siding, troughs, chingles, & soffit to match with existing white garage and a light colour brown brick?????? We are changing them due to water leakage. We have know idea what to Make ...

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