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
1answer
122 views

How can I prevent/divert rain water from dripping on a flat flashing?

I'm helping maintain a set of townhome units and the homeowners are reporting an annoying drip sound just outside their bedroom when it lightly rains (which is quite often). Apparently the sound is ...
1
vote
2answers
45 views

South Florida roof softit roof ventilation and of insulation batts

I live in south Florida and am insulating the roof by placing batts between the rafters. I'm not sure if placing the batts up against the edge where the beams and walls meet is ok or not. The rafters ...
4
votes
4answers
360 views

Bathroom vent through existing roof vent

I have a roof with two gable vents as well as slanted vents that look a lot like these one: I do not want to install an extra vent specifically for bathroom so I was wondering if I could use one of ...
0
votes
1answer
44 views

Can fiberglass insulation cause leaks?

I've recently bought a 100 year old wood frame house from a DiY guy who took decent care of the place. He didn't put any insulation in the attic though and my home inspector said insulation is a great ...
1
vote
1answer
126 views

I have two roof drains, can I seal one of them?

My house has a flat roof and leaks, mostly directly underneath the drains. I've had problems with leaking around the drains since I've owned the house, mostly dripping, but over time it's turned ...
1
vote
0answers
75 views

possible to have too much soffit intake venting for roof/attic?

Is it possible to have too much soffit intake? Currently my simple gable roof on a ranch home has 8 RVO38 vents but NO soffit intake vents (terrible!). Of course the attic space runs incredibly hot ...
4
votes
2answers
110 views

Is it better to fill up the space between rafters with insulation, or put baffles on top and add soffit vents? (inland Los Angeles, cathedral ceiling)

I have 5.25" tall rafters, about 30" on center, with roof planks directly on top of them. I would like to keep the rafters visible, but add insulation between them. So I only have a few inches to work ...
6
votes
2answers
1k views

How can I keep animals out of my chimney?

I own a three story house with two chimneys. The chimney in the center of the house has two flue liners, one of which is used by our hot water heater and the other was for a fireplace that is sealed ...
0
votes
0answers
55 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 ...
1
vote
1answer
644 views

What type of caulk can I use between the furnace vent pipe & flashing on a roof?

Looking to seal a gap between my furnace's vent pipe & the flashing on the roof, specifically here: I'll have to check if there's a missing storm collar too, but should I use High-temp ...
1
vote
2answers
126 views

What should I do about nails that are protruding through the soffit?

Had new roof put on, but when I came home the nails had come through the soffit and split the wood and protrude. Roofer wants to clip off nail, and wood putty the wood. I don't think this is a good ...
0
votes
2answers
606 views

Roof Decking: Plywood/OSB over skip sheathing (decking) or should I strip to the rafters?

I have a shake roof (looks like the original from 1952!) with skip sheathing. Then an asphalt shingle re-roof over that (that makes 2 roofs in 60 years, thanks previous owners!). I have repairs and ...
106
votes
7answers
7k views

How to prevent heavy rainwater from jumping the gutter?

During heavy rain, the water collects from my second floor roof and runs onto the first floor roof as it should. The problem is that since all this water is now concentrated from the second floor ...
0
votes
0answers
68 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 ...
0
votes
3answers
38 views

Should I add another gable vent to my attic?

I have a long house with a 3 sq foot gable vent on the east end. I have two 6 ft long roof vents in the middle and I want to know if I should install another gable vent at the west end to increase ...
1
vote
2answers
673 views

Bringing unused chimney down below roof line?

I'm in the middle of renovating a balloon-framed house from the 1890's. The house is currently gutted. It originally had a standing-seam metal roof that was penetrated by a central chimney. At some ...
2
votes
1answer
190 views

Should I insulate my attic with a hot or cold roof?

I'm turning my 3rd floor attic into a usable space. It's a hip roof, 25' x 23', with one dormer. We just had new asphalt singles put on it and it was about 12 foot of ridge vent on the dormer / ...
2
votes
4answers
372 views

Leaking corrugated metal roof

I have a place that has a corrugated metal roof under a wood deck. It's a pretty large area, maybe 40' x 40'. When it rains, water leaks through some of the nails. The deck boards are not nailed ...
0
votes
1answer
51 views

Galvanized Gutters Required For Dormer With Rubber Roof?

I have a long dormer and currently there is no gutter, water just runs off and is starting to seep into my basement. I got an estimate to install gutters on the dormer and the contractor said that ...
3
votes
1answer
285 views

Getting R38 in roof with 2x8 rafters

I was planning to use foil faced 2" polyiso plus an air gap, plus 5 1/2 rock wool, to get 13+3+23, or r39. But this is all between the rafters below the roof deck, and the polyiso is impermeable. If ...
0
votes
1answer
109 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 ...
3
votes
2answers
866 views

Insulating a post and beam construction roof/cathedral ceiling

My house (built 1972) has a cathedral ceiling with post-and-beam construction in the main room. The ceiling temperature can get as high as 90F, or even greater on a very hot sunny summer day, as ...
1
vote
3answers
242 views

How do I protect and insulate a ceiling built against the roof?

My upper floor used to be a large attic. Sometime in the past the entire space was converted to living space: 2 bedrooms, 2 finished closets, and two unfinished storage "closets". Much of the ...
1
vote
2answers
255 views

Possibilities for shielding porch deck from rain

My porch is farmhouse style (low to ground, no railing), and fairly narrow. The (metal) roof is exactly as deep as the deck. One annoyance that I have is that when it rains, the water coming off the ...
0
votes
0answers
27 views

Reliability of stone granules on a steel roof

I am putting a new roof on my home. I am deciding between an aluminum roof, or a stone-granule coated, (Metro) galv-alum steel roof. I like the look of the Metro steel roof, but I am concerned that ...
1
vote
2answers
165 views

Is it economically reasonable to cool the roof by water evaporation

I want to estimate the outcome before going into hassle of installing the sprinklers/mist emitters. I have a place on the last floor, you can call it an attic, directly under a flat roof which is ...
0
votes
1answer
87 views

Should I fill in 15-20 nail holes in my roof underlayment? If so, how?

I goofed right off the bat when installing shingles for my garden office roof. I forgot to trim the rake of the first shingle in the starter strip. The net result is that it wasn't aligned properly. ...
0
votes
1answer
158 views

question on the roof structure of my garage

This is a follow-up question on how to carry 20ft lumbers to home. Thanks for the advices and comments. I learned a lot. :) Because the question is now diviated from the original question, I made a ...
1
vote
1answer
2k views

When should I consider using Plastic Round Cap Roofing Nails?

I'm getting ready to shingle a roof for a shed/outdoor office and I'm confused on if/when I should use plastic round cap roofing nails: I haven't seen these used in any instructions (including the ...
0
votes
1answer
47 views

Cottage roof leaks

In a cottage that is unheated in the winter, snow sits on the eaves trough and when it melts it finds a way to seep into the cottage, run along the rafters and get leak into the living area. How can ...
1
vote
1answer
80 views

Should this roof be fixed now (shingles)?

My wife and I just bought a house, and it looks like the previous owners did a partial repair job on the roof. Shingles on the front of the house look OK, but the back not so much. I see some granules ...
1
vote
2answers
118 views

Should I fill in holes in a roof deck before installing underlayment?

I'm getting ready to install roofing shingles on an outdoor shed/office. The roof has a small/moderate incline. At the moment, the roof just has bare plywood on it. In several spots, I needed to ...
0
votes
1answer
832 views

Water seeping through stained concrete in slab foundation - during heavy rain only

I bought a house in north Dallas, about a year ago, the house was built in 2000 and it is a single story house. There were no problems reported or found during the inspection for the foundation or the ...
1
vote
0answers
76 views

Pitch on a patio roof

Recently I decided to re-roof my patio because it has been leaking in several places. That's when I noticed that my patio had very little rain run-off. My patio is 24' wide by 17' deep. The roof ...
1
vote
1answer
89 views

Conflict with roofer [closed]

I hired a local roofer to redo my roof. One of the items in the contract is to "INSTALL 7/16” OSB SHEATHING OVER EXISTING ROOF BOARDS." The roof boards are rough sawn 3/4 inch thick pine, with a 1/2 - ...
3
votes
3answers
984 views

How to properly ventilate a Mansard Roof?

I recently purchased a home with a Mansard roof, I had some roofers come to give quotes to replace the top (it is finished) and they all recommend adding ventilation (known issue with Mansard's). ...
0
votes
2answers
128 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 ...
4
votes
3answers
1k 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?
2
votes
2answers
115 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 ...
1
vote
0answers
264 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 ...
2
votes
2answers
100 views

How to prevent squirrels from damaging pipe boots?

I have a few pipe boots on my roof that squirrels like to munch on. I'm not sure why but it creates a lot of work for me. How can I prevent this from happening again once I fix the boot? This is ...
1
vote
2answers
105 views

Can I insulate flat roof using this method?

I just wonder if I can insulate my flat roof in northern India by following steps as under: Apply a cover of Bitumen Cover it with polythene (for water proofing) Lay used cement bags on polythene ...
0
votes
0answers
105 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
3k 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 ...
1
vote
0answers
64 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. ...
2
votes
3answers
357 views

Need a new roof but have2 gable ends and no overhang for soffit vents

I have about a 1400 square foot roof with a 6/12 pitch. The house was built in the 50's and there are no soffit vents, but there are 2 Gable ends. I need to have a new roof installed and am adding a ...
1
vote
2answers
304 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
273 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
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, ...
1
vote
1answer
311 views

Flow rate of water in a 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 ...