How to install a hob for balcony?

[tcteale]

Hey brains trust! - This is a big one, so buckle in.

Context: I'm renovating my 3b, 2ba timber pole home in the southern of the GC as an owner-builder (zero building experience). I will manage the project and hire all the trades (not on the tools). 

Currently, all 3 bedrooms are upstairs and lead onto a timber framed, tiled balcony that leaks badly onto the deck below at the door threshold (not VUTH). We want to enclose under this balcony so we can add more space to our kitchen below. 

Furthermore, the balcony floor buts up (with a few mm gap) to the weatherboard cladding and is poorly sealed. 

My strategy: Remediate with a Hob following this guide: https://app.buildingtools.co/tools/waterproofing-sub-sill-sliding-door-window-hob?shareId=Hk5TU7-172...

The process (for you to rip apart): 
Step 1: Remove doors, demolish tiles, assess whether current fibre cement sheet can be re-purposed. 
Step 2: Remove bottom 2 weatherboards around the entire perimeter and expose timber framing. 
Step 3: If FC sheet isn't re-useable, replace with Scyon and butt up to the exposed timber framing. If useable, achieve the butt join to the exposed timber framing but cutting out and replacing only what is required. 
Step 4: Seal / waterproof join between internal (particle board) flooring and exterior Scyon / FC flooring
Step 5: Install Hob out of Hebel blocks, join blocks and fix to floor using Dunlop ACC Adhesive
Step 6: Install angle (with fillet) along the entire perimeter from framing to floor (either colour bond or PVC - what's better?)
Step 7: Install metal flashing on-top of the angle and building wrap as a final layer before cladding
Step 7: Get waterproofer to attend to all joins and waterproof entire balcony
Step 8: Install Subsill (with dam angle) 
Step 9: Re-install doors with flashing behind cladding
Step 10: Install Axon cladding in-lue of the 2 weatherboards that were ripped up (hope this is doable??) 
Step 11: Seal cladding to floor join with Sikaflex
Step 12: Install mouldings and caulk 
Step 10: Get out the hose and test it all out

Below are a bunch of images and really keen to hear what I might be missing? - Thank you kindly!

Tim 

[JacobZ]

Hi @tcteale,

Thank you for your post and welcome to the Bunnings Workshop community, it is fantastic to have you with us.

Looking over the guide you've linked to, which I must say is a fantastic resource that I was previously unaware of, I can't see any obvious holes in your plan.

The only suggestion I have to engage a water proofer prior to commencing your project so they can run an eye over things and point out anything you might miss. Their experience is going to be incredibly valuable in ensuring everything is accounted for.

Allow me to tag some of our knowledgeable members to see if they have any thoughts, @Nailbag, @Dave-1, @Jewelleryrescue, @Noyade.

Please keep us updated with any questions or concerns and it'd be great to see some updates as your project commences.

Jacob

[Dave-1]

Evening @tcteale 

Impressed with the steps you have listed I had to go through them a few times after figuring out what 3b and 2b were lol

I cant think of too much to add to your steps. Tho kind of have a bit of an issue with you saying you want to build out the kitchen below to under the deck?

Id be figuring out how you will enclose and make waterproof and even if its allowed first. Thats a fairly big change. Do you have any draftsperson or engineering plans for the extension?

Dave

[tcteale]

Hey Dave - sorry! I should have clarified 3 bedrooms, 2 bathrooms.

Yup, I have building approval from a certifier and ready to rumble. Won't be doing any of the work myself, but will be managing the trades. 

If the balcony is waterproof, there shouldn't be an issue with enclosing the kitchen below  

Any thoughts on fixing the Hebel to the floor? - Will that Dunlop ACC Adhesive be my best bet? 

[Dave-1]

Evening @tcteale

I havnt tried installing a Hebel floor so I had a quick search for something. Its a pretty informative page and I would suggest to take a wander through it.

How to build a Hebel PowerFloor deck Now I searched for "fixing hebel to the floor" even tho this guide ssays Floor deck. I think it means floor

Dave

[Nailbag]

Hi @tcteale 

It clearly appears you have every step very well covered. The fact you have building approval also acknoledges the building plans are in place as well, which means there are clear direction as to each step in construction. Though it won't cover surprises which is probably on the cards once demolision is underway. 

It's a major project that involves a lot of trades and Im glad to hear you know your limitations and will get professionals to do the work. Being a project manager is an admirable task in itself. My only point is that though you have professional trades doing the actual work, you don't know what you don't know in construction or what skill level they have. I work along side many tradespeople and the level of acceptable finish is to the point that even I could do a better job.In other words if shortcuts or errors are being made you potentially won't pick these up until next stages by next trades.

So, my biggest tip is to get the services of a brains-trust. In my early days of renovations, this would be from my draftsperson. Though she didn't have the skillsets across the trades as such, she knew if things were done to code and had an eye for detail to understand how what work may impact next stages. I learnt so much from her. If you enjoy and appreciate a show like Grand Designs, the who get the assistance of a qualified builder were always invaluable.

My next tip is get trades in earlier than later to share and discuss your overall plans so they can provide insight in to what they will require in the stages prior to theirs. It costs nothing but potentially can save you thousands in dollars and heartache.

And with regards to fixing the herbal to the floor, your suggested ACC product is spot on. But this is something to discuss with the trade installing it.

You have clearly thought this through which is a credit to your research so, keep it up and work with your trades people and don't be afraid to question them and seek clarification if you're not convinced, but be humble about it. I can assure you that a good working relationship will pay massive dividends 

Keep us in the loop and well done on an awesome start

Nailbag