SKU: 38315251394

Blauberg SonoFlex Thermally & Acoustically Insulated Flexible Ducting 125mm x 10m

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Description

Blauberg SonoFlex Thermally & Acoustically Insulated Flexible Ducting 125mm x 10mBlauberg SonoFlex Thermally & Acoustically Insulated Flexible Ducting 125mm x 10m Product Overview The Blauberg SonoFlex Insulated Flexible Ducting is engineered to deliver superior thermal insulation, condensation prevention, noise reduction and flexibility. Designed for residential, commercial and industrial HVAC installations, it ensures long lasting performance while complying with UK Building Regulations. Available in multiple diameters and

Blauberg SonoFlex Thermally & Acoustically Insulated Flexible Ducting 125mm x 10m

Product Overview

The Blauberg SonoFlex Insulated Flexible Ducting is engineered to deliver superior thermal insulation, condensation prevention, noise reduction and flexibility. Designed for residential, commercial and industrial HVAC installations, it ensures long-lasting performance while complying with UK Building Regulations. Available in multiple diameters and lengths, SonoFlex is the professional choice for efficient ventilation solutions.

Condensation Control

Bathrooms, en-suites, kitchens and wet rooms are highly prone to condensation, leading to damp, mould and poor indoor air quality. SonoFlex ducting, with enhanced insulation in 100mm, 125mm and 150mm sizes, effectively reduces condensation risk by stabilising air temperature and limiting moisture build-up. This is particularly vital when ducting passes through unheated lofts or roof spaces in the UK’s cool, damp climate.

Condensation Risk Comparison

Dia / Length (mm / m) Start Temp (°C) End Temp (°C) Relative Humidity (%) Dew Point (°C) Airflow (L/s) Air Velocity (m/s) Risk Risk with SonoFlex
100 / 1.5 21.0 15.0 80 17.4 15 1.91 High Low
125 / 1.5 21.0 15.0 80 17.4 25 2.04 High Low
150 / 1.5 21.0 15.0 80 17.4 100 5.7 High Low
200 / 1.5 21.0 18.0 70 15.3 140 4.46 Medium Low
250 / 1.5 21.0 18.0 70 15.3 180 3.67 Medium Low
315 / 1.5 21.0 18.0 70 15.3 220 2.82 Medium Low

Disclaimer: Figures are illustrative. Actual results depend on installation conditions.

Temperature Regulation

Featuring 25mm Rockwool insulation with a thermal conductivity of ?0.04 W/mK, SonoFlex helps HVAC systems maintain stable air temperatures, reducing heat loss in winter and cooling loss in summer. This improves overall energy efficiency and comfort in line with UK regulations.

Temperature Deviation Performance

Duct Size (mm) Room Temp (°C) Winter (10°C Ambient) Summer (30°C Ambient)
100 21.0 -0.8 -0.3
125 21.0 -0.9 -0.4
150 21.0 -1.0 -0.5
200 21.0 -0.6 -0.2
250 21.0 -0.6 -0.2
315 21.0 -0.7 -0.3

Disclaimer: Values are theoretical estimates based on thermal conductivity ?0.04 W/mK.

Noise Reduction

The natural acoustic properties of Rockwool insulation within SonoFlex effectively absorb sound vibrations, significantly reducing ventilation system noise. This makes it ideal for noise-sensitive environments such as bedrooms, offices, and commercial premises.

Noise Reduction Performance

Dia / Length (mm / m) Velocity (m/s) Initial Noise (dBA) After Duct (dBA) Reduction (dBA)
100 / 1.5 1.91 50 40 10
125 / 1.5 2.04 52 42 10
150 / 1.5 5.7 55 43 12
200 / 1.5 4.46 57 45 12
250 / 1.5 3.67 59 46 13
315 / 1.5 2.82 61 47 14

Disclaimer: Noise values are theoretical. Actual results depend on installation.

Technical Specifications

  • Diameter Range: 100mm – 315mm (4" – 12")
  • Temperature Range: -30°C to +140°C
  • Thermal Conductivity: ?0.04 W/mK
  • Air Velocity: Up to 25 m/s
  • Max. Working Pressure: 2500 Pa positive
  • Standard Lengths: 5m & 10m
  • Colour: Metallic Silver
  • Insulation: 25mm Rockwool
  • Outer Jacket: Aluminium laminate

Applications

  • Moisture Control: Ideal for bathrooms, kitchens and wet rooms to prevent condensation and mould growth.
  • MVHR Systems: Minimises thermal bridging to enhance energy recovery efficiency.
  • Air Conditioning: Maintains stable airflow temperature, improving system efficiency.
  • General HVAC: Suitable for residential, commercial and industrial ventilation requiring insulation and noise control.

Why Choose SonoFlex?

With outstanding insulation, condensation resistance, and noise reduction, Blauberg SonoFlex Insulated Flexible Ducting is the premium choice for modern ventilation systems. It ensures compliance with UK regulations, delivers long-term efficiency, and is designed to perform in the UK’s demanding climate.

Note: To ensure compliance with UK Building Regulations, flexible ducting runs should not exceed 1.5 metres.

Data Sheet: Download Here

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 38315251394

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Leah P.
Dallas, US
★★★★★ 5
I buy these again and again through the years!
Size: Medium, Color: Austin Brown Assorted (6-pairs)
Love these. After a year or two I wear holes in the bottoms because I wear them so much. Worth the little bit higher price because of the fit and comfort. Love how they are truly no show
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Reviewed in the United States on October 18, 2025
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R3⭐️
Lexington, US
★★★★★ 4
Good quality but tight on toes
Size: 6-10, Color: White/Assorted
These are great socks that stay in place, but they scrunch my toes together like crazy. My feet are normal width. When I first started wearing them I noticed my feet would ache after an hour or two.
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Reviewed in the United States on April 26, 2026
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Brock1234
Cuba, US
★★★★★ 5
My New Favorite Socks
Size: 6-10, Color: Halo Gray/Assorted
These have quickly become mine and my mom's favorite socks. We wear them with tennis shoes, Hey Dudes, and more. The fabric is incredibly soft and comfortable, they do not budge/fall in my shoe, and are extremely well made. I have become so attached to these socks, that I no longer want any other brand.
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Reviewed in the United States on July 4, 2025
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Peety
Battle Creek, US
★★★★★ 5
Fit is great!
Size: 6-10, Color: Halo Gray/Assorted
These socks fit perfectly and never slip!
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Reviewed in the United States on April 9, 2026
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LC
Birmingham, US
★★★★★ 5
LOVE THEM!!
Size: Small, Color: (001) Black / Black / Castlerock
LOVE! These socks are so comfortable! I wear a 5 in women's and a 3 in big kid shoes. The small fit me perfectly. I see where some say they run small but I can't say that was an issue for me. They are "snug" but thats what you want with a no show sock. I feel they have support vs the ones i used to buy at Walmart. They are very soft! I am actually buying more today and throwing my other ones in the trash!
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Reviewed in the United States on February 18, 2026

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