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50mm Knauf Earthwool ceiling insulation

50mm Knauf

In stock

Original price was: R1,037.00.Current price is: R987.00.

50mm Knauf Insulation provides dependable thermal and acoustic performance in applications where space is limited or as a top-up layer over existing insulation.

  • Thickness: 50mm
  • Coverage: 22.8m²
  • Length: 19,000 mm
  • Width: 1,200 mm
  • R-value: 1.25
  • Installed R-value: 1.60
  • Density: 13kg/m³

Need it installed? Get a quote

Minimum order quantity: 3
Description

50mm Knauf Insulation

The 50mm Knauf Earthwool® with ECOSE® Technology is a lightweight glass mineral wool insulation designed for topping-up existing insulation layers or fitting into tight roof spaces where thicker products won’t work. It offers reliable thermal performance with a product R-value of 1.25 m²·K/W, while still delivering excellent acoustic absorption and full non-combustible fire safety.

50mm Knauf Specifications

Specification Details
Thickness 50mm
Width 1.2m (1200 mm)
Length 19m (19 000 mm)
Coverage ± 22.8m²
R-Value ~ 1.25 m²·K/W
Installed R-Value ~ 1.60 m²·K/W*
NRC 0.80
Density ~ 13kg/m³
Fire Classification Euroclass A1 (non-combustible); SANS 10177-5 A; SANS 10177-10 A1
Compliance BS EN 13162; ISO 9001 / 14001 / 50001; DECLARE “Red List Free”
Binder / Material Glass Mineral Wool with ECOSE® Technology (no added formaldehyde or phenol)
Vapour Resistivity 5.00 MNs/g·m

Benefits of 50mm Knauf

  • Perfect for top-ups or tight spaces – R-value of 1.25 delivers added thermal performance without taking up extra space.
  • Improved acoustics – NRC of 0.80 helps reduce noise from outside and between rooms.
  • Fire safety assured – Fully non-combustible (A1), meeting stringent safety standards.
  • Health-conscious design – ECOSE® binder is soft to handle, low in dust, and free from harmful chemicals.
  • Installation made easy – Lightweight rolls with 22.8 m² coverage mean quicker installs and less handling.

Installation Notes

  • Ideal for retrofitting over older or degraded insulation.
  • Lightweight design makes it easy to carry and fit in restricted spaces.
  • Soft-touch surface improves comfort during installation.
  • Suitable for both DIY and professional fitting (PPE recommended).

Best Applications for 50mm Knauf

  • Homes with very limited roof space.
  • Topping up existing insulation to boost performance.
  • Retrofit projects where minimal disruption is essential.
  • Areas needing acoustic improvement without sacrificing headroom.

Related Knauf Options

Need a different thickness? View all Knauf insulation.

  • 135mm Knauf – high R-value for compliance or cold zones.
  • 100mm Knauf – good thermal performance with space efficiency.
  • 75mm Knauf – ideal for moderate climates or retrofit top-ups.
  • 50mm Knauf – best for layering or tight cavity installations.

Upgrade Your Home Today

We supply and install 50mm Knauf Insulation across Johannesburg, Centurion, and Pretoria. Contact us for a tailored quote and enjoy better comfort, lower energy costs, and improved safety in your home.

REQUEST A QUOTE NOW
Shipping & Delivery

Delivery Information

At Home Insulations, we take pride in delivering high-quality insulation products directly to your doorstep. To ensure that your order is delivered efficiently and safely, we have the following guidelines in place:

1. Delivery Process for Insulation Products

  • For insulation products, we deliver stock orders within 1 to 3 days from the time of payment. This ensures quick and efficient delivery to meet your project timelines.
  • There is a minimum order of 3 rolls required. Please ensure your order meets this minimum quantity.
  • Delivery is charged separately and based on your distance (km) from us.

Delivery Locations

  • We deliver to areas across Johannesburg, Centurion, and Pretoria.

If you have any questions or need assistance with your delivery, please don’t hesitate to reach out to our customer service team.

How To Order?

  1. Visit our online shop for insulation prices and stock availability.
  2. Add your product and quantity of rolls to the cart.
  3. Fill out your delivery address and contact details.
  4. We will email you the invoice after the order has been placed.
  5. Once we have received your payment we arrange delivery

Business Hours

  • MON:  8:00AM - 4.00PM
  • TUE:    8.00AM - 4.00PM
  • WED:  8.00AM - 4.00PM
  • THU:   8.00AM - 4.00PM
  • FRI:     8.00AM - 3.00PM
  • SAT:     CLOSED
  • SUN:    CLOSED

For more information Contact Us