ᐅ Interior doors: hollow core vs. solid core vs. engineered core with laminated panel

Hello everyone,

We are currently a bit stuck choosing 12 white interior doors (4 for the basement, 8 for the ground and upper floors). We have obtained various quotes, which vary significantly (cheaper doors for the basement, more expensive ones for the ground and upper floors):

Quote 1 (Sühac):

• Interior door CPL White 40 + frame CPL white lacquered round edge 1985 x 860 x 185 mm (78 x 34 x 7 inches), core: hollow core: €230
• Interior door CPL white lacquer RAL 9010 + frame CPL white lacquered round edge 1985 x 860 x 185 mm (78 x 34 x 7 inches), core: solid core: €335

Quote 2:

• Room door element consisting of rebated door leaf with hollow core slats and wooden frame including rebate and decorative trim with rounded edge, two-part maintenance-free hinges with nickel-plated surface, BB lock with quiet plastic latch; surface coated with CPL - color selection from current palette, wood grain optionally vertical or horizontal: frame depth up to 27 cm (11 inches), dimensions: W 885 mm x H 2010 mm (35 x 79 inches): €325
• - Model ZT 85 - - Carpenter doors - in-house production - interior doors painted solid white, smooth, RAL 9010, core with laminated timber board, door leaf and trim with glued solid wood edges and routed rounding; dimensions: W 885 mm x H 2135 mm (35 x 84 inches): €780

Quote 3 (Köhnlein):

• Dimensions: 860 x 1985 mm (34 x 78 inches), frame: FT-standard door frame with straight rebate edge, angular trim 60 x 22 mm (2.4 x 0.9 inches); door leaf: FT-standard hollow core center, straight edges; semi-matte white lacquer: €481
• Dimensions: 860 x 1985 mm (34 x 78 inches), frame: FT-standard door frame with straight rebate edge, angular trim 60 x 22 mm (2.4 x 0.9 inches); door leaf: FT-standard solid core center, straight edges; semi-matte white lacquer: €526

Prices are net and exclude installation, which would be about €100 per door.

Except for the carpenter door from Quote 2, none come with factory-assembled and pre-painted frames. For Quote 3, this can be done optionally for an additional €195 net per door. This is not possible for Quotes 1 and 2.

Can you assess the quality of these offers?
Naively, I thought a door with solid core would be up to €50 more expensive than one with hollow core. But how good is a core with a laminated timber board?
Which offer would you choose?

For 12 doors, our quotes vary by several thousand euros.

Thank you very much and best regards,
Peter

Aracnor schrieb:

But what is the quality of a middle layer made with a blockboard?

A classic (high-quality) carpenter’s option. It’s very good because it’s very solid.

My preference:
1. Carpenter’s option (although really expensive!)
2. Köhnlein solid particleboard
3. Köhnlein tubular particleboard

No CPL for my own house. Painted surfaces look nicer, although they are more expensive.

Aracnor schrieb:

Interior Doors: Hollow Core vs. Solid Core vs. Core with Finger-Jointed Board

"Everything that can be said has already been said, just not by everyone"?
How many solid core vs. hollow core threads do you think we still need? Can only my "typewriter generation" in online forums still use the search function?

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