Questions tagged [roof]

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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62 views

If I use gussets and hurricane ties can I skip the collar and rafter ties for a 16x24 shed build?

I want to have high ceilings for storage so I'd prefer to have no rafter ties and I figured if I have the gussets I can skip the collar ties too. The ties are cheap enough to install which I think ...
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1answer
49 views

Rafter damage, is this white ants?

I was inspecting my roof today as I believe that I have some possums in the roof. I Looked at one rafter and saw some damage. Is this white ants? Only one rafter has this damage, no others around at ...
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1answer
16 views

Can I span 36” with SYP 2x4 laying flat as roof decking

I’m redoing my garage roof, which has a 12” slope over 14’. I have left over SYP 2x4’s and some microlam beams, but only enough to set at 36” OC. Can I span 36” with 2x4 SYP as my decking instead of ...
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2answers
59 views

How to add a removable cover to a roof-hole?

I had to cut a 10" diameter hole in the roof of our pumphouse because the pump needed to be replaced, and the pipes attached to it are ~20ft long each. Pipes being removed from pumphouse ...
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2answers
62 views

Filling depression in a Flat Roof with Sand and Roofing Rubber?

I have a row house with a "flat roof" meaning it actually has a small grade so that water runs off the back. However, towards the middle of the roof there is a depression that allows an inch ...
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2answers
80 views

What could this tube sticking out of the roof be ? It was directly over the old ac system

We moved into this mobile home with a very old ac unit and we had a new one installed. The people who installed the new one said there was a hole and they weren’t sure what it lead to so they just ...
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13 views

Flared Skylight Shaft Framing

Any tips for framing out a skylight shaft that’s flared/slanted on all 4 sides? The roof is pitched, interior ceiling is flat. Where I am struggling is how to frame up the sides, no issue with getting ...
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54 views

Rafters directly to steel beam with structural screws?

I'm building a patio cover. I have 2x6 rafters that will sit on top a steel C-beam. My first thought was to bolt a 2x4 to the top of the beam and use Simpson hangers to attach the rafters. I also have ...
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75 views

How much garage ventilation is necessary?

The Background I have a 2-car, attached garage with additional shop space. The garage area is roughly 19x21 while the shop space is roughly 12x27 for a total of ~725 sq ft. See the very not to scale ...
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2answers
2k views

Sacrificial Barn Roof

So I am building a rather large (large for me anyway) barn/sheep shelter. It will measure 16x48 when complete. I have already started the framing, as you can see in the pics (the diagonal pieces are ...
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2answers
87 views

Leaky Roof after new shingles were installed

I live in an 'old' house that was not very well cared for. The original home was built in 1910 and has had several add ons that do not make sense with the roofs to prove it. The original house has a ...
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2answers
70 views

Do I need to caulk where my roof meets the siding?

I'm not sure if the seam needs to be caulked where the roof meets my wood siding. There are some areas where it looks like it was once caulked but the majority of it does not look caulked. Should the ...
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1answer
84 views

Unknown ceiling/roof beam installed in old renovation

This house has a shallow (approx ~15°) gable roof, and raked interior ceilings to match. In past renovations, a large horizontal beam was installed which runs the entire length of the house, on the ...
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2answers
63 views

Should old openings in a plywood roof deck be closed before installing steel?

My metal roofer removed all 14 old vents and installed two new "Maximum ventilators" in its place. The remaining 12 holes are still there and not sealed and i can see the underside of the ...
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3answers
89 views

Are gutter guards worth the investment?

I'm trying to make a decision on whether or not I should install gutter guards on my house. We do have some tall trees in our backyard about 30ft from the house, so our gutters need cleaning at least ...
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2answers
83 views

Can I build a roof on this pergola?

We have a 24'x14' detached pergola that was custom-built for our yard. Every year, we put up a large canvas canopy in the spring, and take it down in the fall. It's a perilous experience each time, ...
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1answer
461 views

Can I remove the nails holding trusses to interior walls

The problem: My house has a Hip Roof. The trusses have been nailed to the interior walls. The result is truss lift. Because all interior walls are attached, the interior wall weight is lifted from ...
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1answer
37 views

Is it sufficient to add metal flashing to shed roof to prevent further water intrusion?

Just bought a house in Kansas, and the shed out back looks to be homemade, with an asphalt roof, but not shingles. Both sides show evidence of water rot where the edge of the asphalt doesn’t extend ...
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2answers
322 views

Proper window header for 6-foot window & understanding the span tables?

I'm framing out headers for 6' (72 inch) wide windows in a sunroom. The sunroom is around 12 x 12 and has a ceiling and roof. Based on my current understanding of the header span tables which I have ...
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2answers
70 views

Should I clean moss and algae from my 9 year old asphalt shingle roof?

Does cleaning algae and moss off an asphalt shingle roof prolong its life? I have this on parts that are always in shadow. It's an asphalt shingle roof 9 years old rated 40 years. Generally in good ...
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3answers
122 views

Flat roof with Noggins and Furring Strips

When using furring strips on top of the roof joists to provide a slight slope for a flat roof, my current assumption is that you need 2 sets of noggins, one for the roof OSB and another for the ...
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2answers
108 views

Overflow over gutters on roof. One story ranch

Straight to the point, there's too much water coming off my roof. Unfortunately I wasn't able to record this last rainstorm to show you. My home is a 1950s ranch house one story obviously, the first ...
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2answers
100 views

Please tell me what's the name of the metal wrap

Can someone please tell me what's the name of the metal wrap in the first pic? It wraps the top of the wall on my roof top. My roof has a rubber layer on it and it goes up to inside the wall. On top ...
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1answer
50 views

Changing roof truss diagonal to vertical

I've got a roof with a few diagonal trusses like the blue one in this diagramme: I want to remove the BLUE truss and replace it with the RED truss, because we're adding some loft storage and ...
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18 views

Can I use a ceiling tie above the level of the top wall plates?

I'm beginning to research and design a DIY build of a fully insulated garden room. Some key points: I'm in the South West of the UK, Wind zone 3 with very little/infrequent snow. I'm planning to ...
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1answer
36 views

Flashing /waterproof for wires going through roof gable

I am in the process of replacing my siding and found an odd (read: wtf) spot where wires are coming through the roof to a porch below. It looks like they just put a hole through the roof/shingles but ...
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1answer
229 views

Plumbing jacks without cover on top, is it normal?

It seems that two plumbing jacks on my roof do not have a cover on top, and I used a DJI drone to fly over, and cannot see cover on the surface too. Is it normal to have a plumber jack without cover ...
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1answer
55 views

A creative Eco-friendly Underlayment for a metal roof? [closed]

I am building an octagonal cabin with a 200 sq ft metal roof (Grandrib 3) at a 30 degree pitch; the roof will sit on wooden strapping and will eventually have insulation below it contained by a ...
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2answers
52 views

How to add a drip edge to a steel deck beam over a porch

So I have rust and water damage from water rolling down from the curved porch beam into a porch ceiling. I don't have the same problem with my top-floor porch since that has a roof above it. The ...
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1answer
83 views

How to paint exterior wall when ladder needs to go from a roof section?

I need to paint the front of my house, but there is a section of wall that I cannot get to with a ladder on the ground. This is the house from the side, I need to paint (C) The problem is that if I ...
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1answer
64 views

What corrosion protection for nails, screws and bolts?

Would someone please care to explain the pros and cons of galvanized (hot & electro), stainless, zinc plated, spray (cold) galvanized, and (paint?) coated fasteners? There seem to be different ...
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1answer
78 views

Top to furnace flue just blew off

Sorry if this is posted in the wrong area. Just a moment ago during a storm the top to my furnace flue blew off. Earliest someone can get out here to put it back on it Tomorrow. How much damage will I ...
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1answer
58 views

Beam Span and Size for Pool House

I am building a simple pool house with a large overhang roof. Main issue I have is figuring out what beam size and span I need to support the roof properly. Key Features: Total Roof width: 29ft ...
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31 views

Solution to the recommended 2" roof gap for Hardie siding

So, I'm aware that Hardie recommends a 2" gap between the roof line when installing around a dormer. However, I find this gap to be rather extreme and makes for a strange look. I have also ...
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2answers
185 views

How to fix sagging timber roof trusses?

This is a follow up from a previous question: (Is this a sign of my roof trusses sagging?) Do you know how to use ratchet ties (or some other method) to fix sagging roof trusses? Here is an image of a ...
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1answer
103 views

How should I fix my downspout?

I just moved into this house that needs a lot of work. I noticed that the upper gutters drain onto the roof of the lower gutters and I learned that this will ruin my roof. I was originally thinking ...
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1answer
58 views

Are our cracked roofing tiles dangerous?

We had some felt replaced on our roof a couple of months ago. After the job had been done I went up the scaffolding and took a look at the outside of the roof. See photos at the bottom of this post. I ...
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2answers
167 views

Will a concrete roof hold the weight of a roof garden?

We are planning to build a roof garden on a flat roof. The area of the roof is 25' x 25'. The concrete slab thickness is 6", and our structural engineer has provided sufficient reinforcements, as ...
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1answer
901 views

Mold or rust stain on roof truss

Paid a visit to my attic earlier today to see if there was any winter damage. Looking all good except for a small piece of truss that has a black stain on it (see picture). I would have said mold ...
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1answer
61 views

Plant growing below flat roof

My neighbours have a plant growing out the wall where it meets the roof (flat roof). I mentioned it to them years ago and they must have pulled it out but it’s back and I’m worried it’s growing along ...
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1answer
61 views

Anything forward-thinking things to do regarding solar panels when putting a new roof on?

If you were putting a new roof on now on a shed or garage, and solar panels were a real possibility in the next two or three years (for lights and light-duty electric tools), what things, if any, ...
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0answers
53 views

Attaching OSB sheathing to 2x4 purlins over 12" OC rafters

I'm building a small (65 sq ft. over-engineered) shed using metal roofing. I've designed it using 2x8 rafters spaced 12" OC, then I plan to put 2x4 purlins on top spaced 16", 7/16" ...
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3answers
927 views

How to double up an existing single beam without disturbing the structure?

I am not a carpenter, so please forgive me if I use some terminology wrong. I will do my best to describe my situation, and then my question. I have an existing "lean-to" style porch roof ...
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55 views

Carport roof out of square a little bit

I have a carport roof sheathed in plywood (I did not do that part). I am ready to put the underlayment on (Tyvek). If the roof is slightly out of square, what is the best approach or standard? I would ...
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2answers
68 views

Remove fireplace leave metal chimney on roof

I removed a wood-burning stove and cut through the double-lined metal chimney flue in the attic. In the short term I jammed some insulation in the metal liner and left the rest of the chimney with the ...
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2answers
79 views

Cutting off the tips of roof sheathing cap and metal screws so they don't show?

I am replacing a flat carport roof with PBR metal sheets over 5/8" inch plywood sheathing with underlayment. I know 1/2 inch is strong enough, but I was thinking more of the nailing. Anyway... ...
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1answer
105 views

Why is my roof leaking when it isn't raining?

I've just moved house last week and today have noticed a drip in my dining room. What's odd is that it isn't raining - in fact, today is the first warm day of the year. The "water" is a ...
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1answer
185 views

Horizontal lines on ceiling, roof leaking

My bedroom's ceiling has been leaking (more like dripping) when it's raining or snow melting, and I highly doubt that the old TV satellite dish caused the roof leaking. (Pic 1) What troubles me more ...
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25 views

Wood beam, allowable span

I am doing a big renovation at my place but getting the lumber and all is hard with the pandemic. I found someone with roof wooden I beam that could fit my project but I think they are on the line. ...
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0answers
28 views

Roof Drain Stack: Split 3" pipe into two 2" pipes?

My existing 3" roof drain stack runs through an interior wall that was furred/boxed out a bit to allow for the 3" pipe size. To make this wall flush again I'm wondering if there would be ...

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