ᐅ House Construction – New Build Process Plan

Created on: 13 Jul 2020 13:15
M
Marcel194
Hello,

We had our house designed by an architect, and the floor plan, structural calculations, etc., are all finished. We want to collect quotes from different companies ourselves to save costs.

Could someone provide a step-by-step plan indicating where to go first and what needs to be considered there?
Thank you in advance.

Best regards
H
hampshire
13 Jul 2020 19:36
11ant schrieb:

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J
Jann St
15 Jul 2020 08:45
Hello,

I don’t want to interfere in the discussion of whether it makes sense or not (even though I am on the side of the answers already given).

The process mentioned before is logically correct but should be supplemented. Maybe you’ll see that it makes sense to involve an external expert.

Civil Engineering
Excavation, backfilling
Drainage pipes (wastewater/rainwater) etc. under the foundation slab?
Who installs the utility connections?

Shell Construction
Electrical installation during shell construction in parallel (cabling in ceiling slab?)
Chasing grooves etc. sensible before the windows are installed because of dust and debris
What is the groundwater situation? Does the foundation need waterproofing? Roofer involved?

Roof Structure
Roofer
Windows
Window sealing (For floor-to-ceiling windows on the ground floor → Which sealing? Who does it? Probably not the window manufacturer)
Electrical rough-in for walls & floors
Interior plaster (which system, what quality. What type of wall covering will be applied?)
Exterior plaster? EIFS (external insulation and finish system) / brick façade? Should be applied after interior plaster for vapor diffusion outward
Sanitary rough-in
Drywall (coordinate between sanitary and drywall work to avoid costly delays if trades interfere with each other)
Electrical installation in drywall walls
Screed – Are the heights planned accordingly? Different floor coverings like tiles, vinyl, or parquet require different buildup heights
Heated screed or wall radiators? How do you handle expansion joints?
How long until the floor can be covered? Who decides this? How long can you wait? Who measures the readiness for covering?

Interim question: How will ceilings and walls be finished? Just plastered and painted? Ceilings skim-coated and painted? Wallpaper?

If wallpaper: flooring work, wall tiling in bathrooms
If painting: primer by painter, then flooring, then painter’s finish coat

Tiler: Which waterproofing is planned in the bathroom? Have you already planned this? Who will do the job?
Parquet / vinyl – what about expansion joints? Cork? Cover strip? Who will do this?

Then, of course, sanitary and electrical finishing work follows.

And now, returning to the original question:

Who do you need first if you manage everything yourself?
Civil engineer
Shell constructor
Electrician
Sanitary plumber — if pipes need to be installed in the slab

These are the key trades at the start. Then you should take care of the window installer and plasterer.

If you want to continue this way, I can prepare a brief scheduling plan for subcontracting.

Best regards,
Jann

Best regards,
Jann
Tolentino15 Jul 2020 08:57
Jann St schrieb:

If you want to continue with this approach, I can write up a brief scheduling plan for task assignments.

I’d be interested regardless of the original poster, and I think others here would be too.
Jann St schrieb:

Window sealing (For floor-to-ceiling windows on the ground floor → What kind of sealing? Who does it? Probably not the window installer)

Really, then who? Who usually does this, and who could do it?
Jann St schrieb:

If painting: Primer by painter, then floor coverings, then final painter work


Really? Why? I always hear the recommendation to first do all painting, then all flooring, then doors. Or what do you mean by final work? Just the acrylic joints and any corners that were missed?
Also interesting: When is the staircase installed in this sequence?

Good luck

Tolentino
J
Jann St
15 Jul 2020 10:52
Tolentino schrieb:

I would be very interested regardless of the original poster, and I think others here would be too.

Okay, I’ll gladly take a look at it during my vacation.
Tolentino schrieb:

Really, but who exactly? Who usually does it and who could do it?

It depends on the water exposure. In my opinion, the window installer can only ensure protection against driving rain. However, I believe it’s better to properly seal the window and connect it to the base waterproofing (also for the case of ground moisture). This can be done with bituminous waterproofing sheets (KSK), liquid waterproofing, or cementitious waterproofing (KMB), and it’s usually carried out by a roofer. I know that single-family house construction often handles this differently, but on the other hand, that can be a weak point. It’s also possible that the shell builder (structural builder) carries waterproofing membranes out directly if the facing brickwork is installed in front of the window, but as I said, I’m not a fan of that approach, though there are certainly other opinions.
Tolentino schrieb:

Really? Why? I always hear the recommendation to do the painting first (completely), then the flooring (completely), then the doors, or what do you mean by finish? Only the acrylic joints and corners that were forgotten?


True, I was a bit too quick in my writing flow. The wallpaper should also go in beforehand, and then only the skirting board as the final touch. Then the acrylic sealant. You just need to make sure the floor installer doesn’t cut on-site inside the house, because you can’t get that dirt out again. If the floor is well protected, wallpaper can of course also be applied after the floor is installed, and then finished with the skirting board.

Regarding acrylic joints: I would always budget enough money for joint work. In the end, there are many areas where cracks appear (drywall junctions to solid walls, precast ceiling to plaster with scratched joint, etc.) where joints are necessary. (A quick side note)
Tolentino schrieb:

And another interesting question: When is the staircase installed?


Honestly, I’m not an expert on that because I come from multi-family construction where we install solid staircases already during the structural phase. If the staircase comes from a carpenter, in my opinion, it should be installed pretty late. If it’s a reinforced concrete staircase receiving finishings, it typically belongs to the structural phase.

Regards, Jann
Tolentino15 Jul 2020 11:08
@Jann St Thank you for the detailed explanations, I’m looking forward to the schedule.
One more question: what do KSK and KMB stand for?

Thanks and best regards

Tolentino
J
Jann St
15 Jul 2020 11:56
Tolentino schrieb:

One more question: what do KSK and KMB stand for?
KSK = Cold self-adhesive bitumen membrane
KMB = Plastic-modified bitumen thick coating.

Unfortunately, I am not allowed to show reference products, otherwise I would get warned again, even though this is never intended as advertising.
We used KSK here; I can gladly share a picture showing what it should look like and what it shouldn’t.
We also applied liquid plastic waterproofing on windows, but on a stepped base slab for the underground garage, which is certainly a somewhat higher load scenario than for a single-family house without a basement.

Always happy to help. I actually enjoy it.

Best regards,
Jann