ᐅ Selection of Fixtures and Fittings: Additional Costs for Snow Guards and Acoustic Ceiling Insulation

Hello!
We are comparing for what feels like the tenth time our customization details with the original quotation documents. During this, we found a few discrepancies. Among them are:
- Snow guards > are priced at €2940 including VAT for 20 meters (66 feet), as well as €850 including VAT for roof steps. Do you consider these prices to be typical?
(With another general contractor, this would have cost less than half.) In your opinion, are these considered "problematic items"? If another company were to carry out this work, could it lead to issues (e.g., a leaking roof or similar)? (Both are attached/fixed under the roof shingles by screwing.)

- Sound decoupling of the ceiling for the practice area > the original offer included "Improved sound insulation of the wood beam ceiling in the single-family house by using a spring rail instead of a support batten (39.1 m² (421 ft²)): €938."
Now: sound-decoupled suspended ceiling together with a single layer of Knauf Silent-Board, total €936.
So, about double the cost, since the special Knauf Silent-Board replaces the regular drywall.
We have not received a clear answer on how much better the new option would perform. Only that the sound insulation requirements have changed.
Can someone help assess how much better the sound insulation of the already sound-decoupled ceiling would become?

Thank you very much and have a great weekend.

We pay a net amount of €31.90 per linear meter (lm) for snow guard mesh and €20.24 per piece for roof safety hooks. I hope this helps you.

Regarding soundproofing: try searching for "Knauf drywall soundproofing pdf." There are tables showing various constructions and types. Alternatively, you can also check the corresponding Rigips options. Depending on your requirements, these can sometimes be more cost-effective.

Best regards

Thanks, XIII!
Is your "net price of €31.90 per linear meter for the snow guard" just for the material?
I’m more concerned about the installation than the material itself.

The Knauf Silentboard is relatively expensive; I would like to understand if it is really worth the price, or if the suspended ceiling alone provides most of the benefits.

The costs for the snow guard include installation. However, these are Eastern European prices.

Regarding soundproofing, I am currently only considering the gypsum boards. Increasing the quality/sound insulation level only adds about 1 dB for a single-layer wall. A 3 dB reduction in noise is perceived as halving the loudness. The cost for upgrading the quality level is around 1.5 to 2 euros per m² (10.7 to 21.5 sq ft). Unfortunately, I don’t have the details for the Knauf products in mind.

Compare Knauf’s "Silentboard" with Rigips’ "Die Harte." We are currently facing a similar decision and have chosen Rigips soundproofing boards because they are more cost-effective than Knauf. If the budget allows, I would recommend building with the highest quality possible here (especially if noise is an issue in the building area). Changing this later, once everything is finished and you realize it’s too noisy, is quite complicated.

Best regards

Thank you for your comment. I couldn’t find information on how many decibels the silent board would reduce. However, our general contractor would probably not use anything other than the Knauf product. Your costs are almost 75% lower.

Lucrezia schrieb:

Your costs are almost 75% lower

Maybe your grids are just much better?
The materials used weren’t even specified. Maybe yours are custom made and the cheaper ones are mass-produced? Or something else entirely.