Knauf Loft Insulation Roll Roof Lagging 100 150 170 200mm Thick Attic and Floors (150mm, Cream)
Pros
- Glass mineral wool rolls pre-perforated to fit common joist spacing
- Non-combustible with ECOSE bio-based binder for lower odour
- Effective for both loft and floor lagging in one product
Cons
- Itchy to handle without gloves and a mask like most mineral wool
Specifications
- Material
- Mineral Wool
- Price tier
- Mid-range
- Size
- 150mm
How it compares in Loft & Wall Insulation
We list 20 loft & wall insulation products, priced from £15.98 to £563.00. At £32.49 this one is the 5th cheapest of them — 15 cost more. The average across the subcategory is £104.37 and the midpoint is £50.49, so it lands £71.88 below the average.
Its 4.0-star score sits 0.32 below the loft & wall insulation average of 4.32, with 14 of the 20 rated higher. Its 60 Amazon reviews make it the 7th most-reviewed here, against a subcategory average of 401.
Price position in Loft & Wall Insulation
Splitting the subcategory into three price bands puts this product in the Budget band (£14.38–£44.99), which holds 7 of 20 products and averages £30.09 at 4.34 stars.
| Band | Range | Products | Average price | Average rating |
|---|---|---|---|---|
| BudgetThis one | £14.38–£44.99 | 7 | £30.09 | 4.34 |
| Mid-range | £45.59–£64.99 | 7 | £53.22 | 4.46 |
| Premium | £84.99–£563.00 | 6 | £247.99 | 4.13 |
About this product
Knauf Loft Insulation Roll Roof Lagging offers a straightforward solution for thermal insulation of pitched roofs and floors, making it ideal for homeowners looking to reduce their heating bills and improve energy efficiency. This roll insulation is primarily designed for use at ceiling level within a loft space, typically installed in two layers – one between the joists and a thicker layer perpendicular to them – though it can also be applied to floors.
Reducing heat loss through your roof is crucial, with approximately 35% of home heat escaping upwards. This roll insulation helps mitigate this, potentially saving you around £350 annually on heating costs, an amount that could rise significantly due to current energy prices. Increasing the thickness to the recommended 270mm could boost savings to £200-£300 per year. The product’s ECOSE Technology, incorporating a bio-based binder, makes it softer and easier to handle than traditional mineral wool, minimising discomfort during installation.
Crafted from glass mineral wool, Knauf Loft Roll is free from harmful substances like CFCs and HCFCs, boasting zero ODP (Ozone Depletion Potential) and GWP (Global Warming Potential). It's also odourless, rot-proof, and resistant to vermin and fungal growth, ensuring a healthy and safe environment. The roll’s pre-perforated design simplifies installation, fitting commonly spaced joists. While offering excellent thermal performance, remember that mineral wool can be itchy without gloves and a mask during handling – taking appropriate precautions is recommended. It provides a lightweight and economical insulation quilt, delivering thermal, acoustic and fire protection with a non-combustible rating.
Related attributes
FAQ
What is Knauf Loft Insulation Roll Roof Lagging best suited for?
This insulation roll is primarily designed for thermal insulation of pitched roofs and floors. It’s particularly well-suited to applications where a lightweight, non-combustible material is required, offering protection against heat loss.
What materials are used in the construction of this product?
The insulation roll utilizes glass mineral wool as its primary component. It incorporates an ECOSE bio-based binder to reduce odour and offers a non-combustible performance, contributing to fire safety.
What are the dimensions of one roll?
One roll measures 8.05 metres in length and 0.57 metres in width, providing a substantial surface area for coverage within a typical loft or floor space.
How does this insulation compare to other mineral wool options?
Knauf Loft Roll is formulated to be significantly softer to handle than traditional mineral wool, reducing the irritation commonly associated with this type of material. This makes installation easier and more comfortable for the user.
What maintenance or cleaning should I do on the insulation?
Due to its inherent properties, Knauf Loft Roll generally requires minimal maintenance. However, standard dust removal with a soft brush is recommended periodically to maintain optimal performance and prevent buildup.
Is this product suitable for use in both roof and floor lagging?
Yes, the roll can be effectively used for both loft and floor lagging applications. Its versatility makes it a convenient option for projects involving multiple areas requiring thermal insulation.
Are there any specific safety precautions I should take when installing this insulation?
When working with Knauf Loft Roll, it’s advisable to wear appropriate personal protective equipment, including gloves and a mask, to minimize potential irritation from the mineral wool fibres.
What is the EcoSE technology used in this product?
ECOSE Technology – softer to handle compared with traditional mineral wool.
How does this product contribute to energy savings?
The roll provides thermal insulation, effectively reducing heat loss from buildings. This can lead to significant reductions in heating costs, aligning with the manufacturer's claim of potential savings based on reduced heat transfer.
What is the recommended thickness for optimal performance?
While the roll offers a starting point of 150mm, achieving the maximum energy-saving potential would involve increasing the overall insulation depth to a greater value, as indicated by manufacturer recommendations.
£32.49
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