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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498 views

How can I add insulation above my finished ceiling?

What is the cheapest option for adding insulation above a finished ceiling? There has never been any in the spot that I need it. Should I take the roof off or have it sprayed in? The space is 20 feet ...
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1answer
212 views

Is there a tool that will crimp close the end the ribs on a metal roofing panels?

I saw a building that had the exposed bottom edge of the ribs in the metal roofing panels crimped closed so bugs couldn't craw or fly up them. It was very neat/professional looking as if it had been ...
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1answer
225 views

Installing roof truss diagonal bracing: splice plate where braces cross?

I'm looking at installing diagonal bracing to my roof trusses as described on page 77 of the document at http://www.dwbgroup.co.uk/files/8013/5284/7141/Gang_Nail_Trussed_Rafter_Manual.pdf but am ...
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1answer
6k views

How far apart should I space rafters for a 13ft patio?

I'm looking to build a patio roof (shed style) and need to span 13ft. I've found several span tables online, some of them with different maximum distances between the rafters. Is it ok to use 2x8s ...
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1answer
1k views

Is it code-compliant to attach a patio to the roof like this?

I want to attach a patio cover to my house. Trouble is the clearance between the window and the roof rafters is too small for a ledger. I was considering the option of attaching to the roof top like ...
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1answer
447 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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28 views

White substance on roof timbers

I've just inherited my dad's house and I've been looking over it's condition, and one of the walls was getting damp when it rains, I had a look in the loft and saw the following: Is this dry rot? ...
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15 views

What's the proper way for an awning roof to sit on the rafters(?)?

We have some roof covering our patio. There is about a half-inch gap between the OSB that makes up the roof, and I guess they're called rafters? Whatever they are that form the edge of the roof line. ...
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30 views

roof ridge beam support

I am building my son a batting cage that measures 14'x40'. I have finished the concrete slab and I am now framing a 3/12 pitch roof over it using rafters and not joists. The roof will be supported by ...
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18 views

Is my “modified bitumen” roof installed correctly?

Album here: http://imgur.com/a/3NhKm My new roof was installed last week. I had a 400 sq. foot section of flat roof that was supposed to receive modified bitumen. I wanted to add a bit of pitch but ...
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16 views

Would adding ceiling joists in combination with a ridge beam reduce the reaction force of the ridge beam supports?

so think of a normal coupled roof design, with ceiling joists acting as ties for the rafters, except the rafters aren't attached to a ridge board, but a structural ridge beam. Would this configuration ...
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47 views

Attic Ventilation Improvement

Location: Portland, Oregon, USA area House: 1972 single story, approx 1500 sf attic area. When we bought the house the prior owners paid for attic mold remediation. I believe the mold was a result ...
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36 views

What is the appropriate type of caulk/sealant to use to connect evaporative/swamp cooler to roof duct?

I recently had my house re-roofed (flat roof, tar & gravel type). In order to do so, the roofers had to get the swamp cooler out of the way. My cooler is attached to a duct protruding upwards ...
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1answer
38 views

Why do you double the bottom row of asphalt shingles

I've been taught that when you lay shingles, the first (bottom) row on the eave should have a double row, and that the bottom one is placed upside down. Why?
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13 views

Home Flat open roof Repair mortar

my house roof flat make RCC.roof has joints 30feet long,there is a crack 5cm wide,5cm deep,and 30feet long,How can i fillup it.what do i use cement sand concrete than water stop leak?
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54 views

Roof Fascia -> Do I need aluminum around fascia? Does fascia have to go over siding?

I'm about to redo a garage roof. (Existing roof picture is below.) I think I understand how most things come together: rafters, plywood, felt, ice shield, shingles, flashing. The things I don 't ...
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43 views

Decking on a Metal Roof

I can't say for sure that I've ever seen a deck on a metal roof... is it against code? If not, can anyone point me in the right direction for information about building a deck (or a crows nest) on top ...
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26 views

Doors will not open

I had a new roof put on about 2 weeks later my doors to the out side would not open? I think it has something to do with new roof at the same time my house started to sweat, the exterior walls were ...
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20 views

Fascia lining modified bitumen roof

I have a low pitch modified bitumen roof. On the low side it has lumber fascia lining the walls underneath it. I need to replace that fascia because it is rotten and parts have holes for squirrels to ...
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51 views

How close to the roof can I drywall in my garage?

I'd like to drywall the entire garage ceiling and I have a tall peak in the roof near the back where the garage roof meets the house roof. I'd love to keep the high ceiling, make some high shelves or ...
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35 views

False ceiling to cover the roof

What is the best way to install false ceiling in room with gaddar and rock slabs. Roof view
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60 views

Ceiling water stains… roof appears fine

For the last 18 months i keep getting Water Stains in a 2nd floor bedroom and hallway. My handyman, and two roofers say the roof looks fine. I've had vents caulked but I've been unable to find the ...
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75 views

Roof joists size and spacing

I am in process of building a 12'x16 lean to shed for a customer using (9) concrete peirs. 4x6 runners--16' long 2x6 floor joists 2x4 wall construction The roof slopes from the front to the back--16'...
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2answers
140 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 ...
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111 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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41 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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117 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 ...
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197 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 ...
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192 views

rain cover for basement steps

I'm making a plywood rain cover for basement steps. The area is 5' wide by 8 'long. The height will be 8'. I want to make concrete footings for the support posts. What size and width of hole for ...
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1answer
631 views

Repairing a gap under a eave.

Last night I heard scratching in the wall and upon investigation found that a squirrel had managed to knock loose a piece of wood (I assume as there was no covering to be found) in the eaves where one ...
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373 views

Dormers with ridge vents lower than main ridgeline

My roof contractor placed ridge vents on all peaks on my home, including the dormers. So, I have the main attic space, which is vented by a ridge vent running the entire length. I have plenty of ...
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147 views

Leaking roof/ceiling

We had a new roof put onto our kitchen extension because water marks were appearing on the ceiling. For a year, this seemed to stop any further water coming through. in the past week or so more ...
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175 views

Can a false ceiling improve insulation?

My new house has a very small kitchen which is actually an extension of the house with its own roof. I suspect its roof insulation is old and not effective, because this kitchen is quite cold (12 ...
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2k views

How should the gutters be installed on a huge gable dormer?

I have a situation similar to this photo (except my "dormer" is 24 feet long), focusing on the upper gutter: I think it makes the most sense to catch rain/debris from a roof valley in the main gable ...
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1answer
112 views

Do I need Attic Fan in Garage?

My garage is about 20" x 24" and I have made attic in the Garage by adding plywood, insulation & sheet-rock, It is nicely done and as soon I finish this project, i realize, i do not any ...
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2answers
874 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