+381 (11) 425-10-59 / BelgradeFree engineering consultation

Water-resistant underlayment with sound absorbing qualities

Ultrakustik Floor 100 Hydro is a dual–purpose material. It provides waterproofing for floating floors and significantly reduces shock noise.

It effectively reduces the shock noise level by up to 24 dB

Ultrakustik Floor 100 Hydro is used as an elastic layer in a sound insulating floating floor construction.

Acoustic felt retains its elastic properties under load and increases the shock noise insulation level of the floor structure by 24 dB.

The stability of the Ultrakustik Floor 100 Hydro characteristics is confirmed by long-term use of the material in construction and regular measurements at existing facilities.

Professional Waterproofing Material

Ultrakustik Floor 100 Hydro is designed to provide effective shock noise insulation in rooms prone to leaks, such as bathroom, kitchen, water closet.

The top layer of the underlayment is made of a reinforced polymer-bitumen membrane that protects the floor surface from leaks. Adding polymers to the bitumen binder provides high temperature resistance, durability, and strength of the waterproofing layer.

Features of the material usage, ready-to-use soundproofing structures and examples of implemented projects can be found in the "Usage" tab.
Go to the tab

Maintenance info

Composition and description

Гидроизоляционный слой: усиленная полимерно-битумная мембрана.

Звукоизоляционный слой: акустический войлок из 100% полиэфирного волокна.


Материал Ultrakustik Floor 100 Hydro должен храниться в вертикальном положении в один ряд по высоте с соблюдением правил пожарной безопасности и условиях, исключающих попадание на них атмосферных осадков и грунтовых вод.

Features of the material usage

Ultrakustik Floor 100 Hydro, в отличие от других гидроизоляционных- материалов , не требует наплавления, а просто укладывается на поверхность перекрытия единым полотном. Битумная поверхность материала должна быть обращена вверх, а края должны находить один на другой с нахлестом. Стыки между полотнами проклеиваются путем размягчения битума при помощи строительного фена или газовой горелки с узким пламенем.

Installation guides, video instructions, certificates, acoustic measurement protocols and other materials for download can be found in the "Support" tab.
Go to the tab

Physical Properties

Ширина рулона:
1 m
Рабочая ширина упругой подложки без учета напуска битумной основы:
0,93 м
Длина рулона:
10 m
5 mm
Вес рулона:
34 kg

Physical and Technical Properties

Показатель динамической жесткости при нагрузке 2 кП:
не более 80 МН/м3
Разрывная сила при растяжении:
не менее 270 Н
Водонепроницаемость при давлении не более 0,2 МПа, в течение 2 часов
Водопоглощение в течение 24 ч
не более 2%
DТеплостойкость не менее 85 С
не менее 85 С

Acoustics Properties

Acoustic tests have been performed by the NIISF RAASN acoustic measurements laboratory in Moscow

Индекс снижения уровня ударного шума, ΔLn,w под стяжкой с поверхностной плотностью 100-120 кг/м2


Features of the material usage, ready-to-use sound-proofing structures and examples of implemented projects can be found in the "Usage" tab.
Go to the tab

Didn't find what you were looking for? Just ask us!

Ask your question

If you couldn't find an answer to your question on this page, don't worry. Ask us and we will respond as soon as possible. We usually answer questions during the working day. You can also leave a review about the material. Your opinion is very important to us!


Questions/reviews from site visitors

Please note! In order to avoid spamming the page, questions are pre-moderated before publication. Therefore, the submitted question does not appear on the page immediately.
27 January 2023
Is it possible to fix Ultrakustik Floor 100 Hydro to the ceiling to insulate shock noise from above?
Expert answer

Use of Ultrakustik Floor 100 Hydro on the ceiling will not reduce shock noise from the neighbors from above. It would be most effective to apply the material under the floor screed at the neighbors’ from above.

27 January 2023
Is it possible to use Ultrakustik Floor 100 Hydro in the bedroom?
Expert answer

Ultrakustik Floor 100 Hydro material can be applied throughout the apartment (in all types of premises).

27 January 2023
Is it acceptable to lay the Ultrakustik Floor 100 Hydro in two layers?
Expert answer

Installation of Ultrakustik Floor 100 Hydro in 2 layers is not recommended, as it does not result in a significant increase in soundproofing.