How would I explain this to a contractor for a quote

[edcantu9]

I currently have a 2 car garage. I want the old roof torn off the garage made taller from 7' to 12'. Is there a word for like like re sizing the roof? It is a detached garage.

Is this even possible? Is this something that can be done DIY? About how much would a contractor charge?

 

[walrus]

I currently have a 2 car garage. I want the old roof torn off the garage made taller from 7' to 12'. Is there a word for like like re sizing the roof?

Is this even possible? Is this something that can be done DIY? About how much would a contractor charge?

Its possible. You want more headroom. Just explain it like you did on here.

 

[Ign]

Pop the top?

 

[LB-1911]

I currently have a 2 car garage. I want the old roof torn off the garage made taller from 7' to 12'. Is there a word for like like re sizing the roof? It is a detached garage.

Is this even possible? Is this something that can be done DIY? About how much would a contractor charge?

Increase wall height from 7 to 12 feet.

 

[matt_i]

Diy, of course. You just need some drawings to start, select a roof pitch.

The downside is your nice roofed space is going to be open to the elements for a period of time (contractor or diy, so you'd probably need to "bag" everything with plastic or good tarps). If you had time off work that you could merge with a nice window into the weather, some helper(s), and a pile of the correct materials already on-site, you could probably knock this off. The trusses are the long-lead item, the rest would likely be available locally.

Basically tear off shingles and roofing, tear off roof deck, tear down trusses or rafters to get down to the 4 walls. Working 1 wall at a time, remove double top-plates of the walls so you can sister in new 12' studs. I believe you should plan for center-blocking each stud cavity due to wall height > 10ft. Now you rebuild the double top-plates, set new trusses and resheath the roof. Get back to a layer of synthetic underlayment held down with orange cap nails and you are good for awhile to get everything else put back.

You might be able to re-use the trusses but they'd have to be taken down with due-care which takes longer. You might be able to get attic storage trusses depending on size and roof pitch which could be a driving reason to buy new.

I left out parts about permitting and inspections, those would have to be crossed also.

 

[K13]

Most guys around here jack the buildng up and build stubwalls under the existing walls to add height no need to touch the roof unless you want a different pitch.

 

[NUTTSGT]

Most guys around here jack the buildng up and build stubwalls under the existing walls to add height no need to touch the roof unless you want a different pitch.

Yep, that's what I was thinking too.

However, you will need to adjust the door heights.

 

[matt_i]

Most guys around here jack the buildng up and build stubwalls under the existing walls to add height no need to touch the roof unless you want a different pitch.

You are asking for a catastrophic fail, if conditions are right, by putting a hinge point in the walls.

 

[keen]

You are asking for a catastrophic fail, if conditions are right, by putting a hinge point in the walls.

well, there's a right way and a wrong way to do everything. there are some good threads on here about doing it the right way.

(essentially the stub lower wall is only to get the weight off the jacks, then sister in a new full (or partial) lower wall)

of course, you could set it down on a block or poured concrete stub wall - if done right you dont have the hinge issue. if done wrong, well...

same issue if you raise the roof off the walls (avoids raising the door - but me, I 'd want a raised door)


that said - since he's asking about getting a contractor to do the work, a decent contractor will know how to do it right. but definitely worth reviewing the details of the plan.

 

[Marctrees]

matt - I would think if there is a sistered scab of decent length and decently connected shoudn't that be fine?

Actually, MAYBE... no seperate scab, just the new studs lapping on to the old studs like 3' minimum I would think ??

Or so the nails do not support shear load, **** the old and new studs and nail on the 5' + or so scab. Marc

Never done it but seems to make sense. Marc

 

[1949 caddyman]

I'll try again.http://www.garagejournal.com/forum/showthread.php?t=283853

 

[Playwme]

What's the condition of the existing garage? Fully lined and insulated?

If it's a basic shell garage then probably wouldn't cost much more to just pull it down and start fresh on the old slab. Your height increase is pretty significant.

 

[edcantu9]

Its insulated and has osb for walls.

 

[Marctrees]

Seems to me.. to get your best bang for buck- properly done of course... You will have to figure out from others here and other sources.. The BEST overall method of ending up w what you want.

AFTER that, get bids from Contractors. Marc

 

[larry_g]

I would approach the contractor with " I'm looking to have 12' of space inside this building" Let him tell you if he would raise the roof or raise the whole building and build up the stem wall or sister in studs. Each building is different and lend themselves to to different ways of modifying. The contractor may come in and find your sills are rotten and have to be replaced anyway, or you have trusses that can be removed and the walls extended.

Also understand that you don't want to demand 12'. Be flexible with 11.5' to 13' . Understand if you want a 12' door opening height then the ceiling height is going to have to be more. You have to give him a place to measure to 12'. Write down the reasons for this modifications, you want a lift, park a motor home, want an up stairs. Then see what the contractor proposes. Each will propose what they feel most comfortable with.

lg
no neat sig line

 

[Falcon67]

DIY is easy enough - with the right equipment. Easiest A to B IMHO would be to cut the roof free from the top plates, diagonal brace the joists, raise and support roof assy, cut or knock out the plates and install longer studs sandwiched to the existing (studs are cheap in the over all cost, mo = betta LOL), set new double top plates, drop the roof back down and secure the joists to the plates, install hurricane ties for extra strength. This method does not disturb any existing doors or window placements, framing, etc. And jacking up a building is easier than you might think LOL.