For an efficient and cost-effective way to upgrade your loft insulation, the Knauf Earthwool Loft Roll 44 150mm Combi (9.18m²) (Product Code: 12FG150E) is a reliable choice for both trade professionals and confident DIYers shopping at TJ O’Mahony. Designed specifically for cold loft applications, this 150mm mineral wool roll delivers strong thermal performance while remaining easy to handle and install.
Ideal for laying between ceiling joists or as part of a layered system to achieve current Building Regulation standards, this Combi roll helps reduce heat loss through the roof — one of the biggest areas of energy escape in any home. With generous coverage per roll, it’s a practical solution for larger attic spaces and renovation projects alike.
Manufactured using Knauf’s ECOSE® Technology, the insulation is soft to touch, low in dust, and odourless — making it more comfortable to work with on site without compromising performance.
Key Features:
High Thermal Performance: Helps improve energy efficiency and reduce heating costs.
150mm Thickness: Ideal for fitting between standard ceiling joists or as part of a top-up system.
Excellent Coverage: 9.18m² per roll for faster, more economical installation.
Flexible & Easy to Fit: Friction-fits between joists with minimal cutting required.
ECOSE® Technology: Low dust, low odour, and made with a bio-based binder.
Non-Combustible: Euroclass A1 fire rating for enhanced fire safety.
Technical Specifications:
Product Code: 12FG150E
Thickness: 150mm
Coverage per Roll: 9.18m²
Material: Mineral Wool
Thermal Conductivity: 0.044 W/mK
Reaction to Fire: A1 (Non-Combustible)
TJ’s Tip:
For maximum efficiency, install 150mm between the joists and consider adding a cross-layer (such as a 200mm roll) over the top to meet recommended insulation depths. Always maintain ventilation at the eaves to prevent condensation build-up and ensure long-term performance.
We offer reliable delivery services throughout the Republic of Ireland, with straightforward delivery charges for both trade and DIY customers. Delivery options are confirmed at checkout based on your order and delivery Eircode.
Delivery Charges & Delivery Times
Delivery Type
Delivery Area
Delivery Charge
Delivery Time
Small Items
Republic of Ireland
€9.99
3–4 working days
Large & Heavy*
Standard delivery area
€29.99
5–7 working days
Extra Large*
Standard delivery area
€50.00
5–7 working days
Paint 5L or less**
Standard delivery area
€19.99
5–7 working days
Swipe sideways to compare delivery options.
Small Items
Delivery area
Republic of Ireland
Charge
€9.99
Delivery time
3–4 working days
Large & Heavy*
Delivery area
Standard delivery area
Charge
€29.99
Delivery time
5–7 working days
Extra Large*
Delivery area
Standard delivery area
Charge
€50.00
Delivery time
5–7 working days
Paint 5L or less**
Delivery area
Standard delivery area
Charge
€19.99
Delivery time
5–7 working days
*Standard delivery policy. Promotional delivery rates may apply during campaigns.
Additional Information
FREE delivery on eligible Small Items and Large & Heavy orders over €1,499, within the standard delivery area only.
Special Order and Catalogue Products require an additional 5 working days.
FREE collection of old appliances is available through WEEE Ireland when purchasing qualifying large appliances.
FREE Click & Collect is available for items in stock at your selected branch.
Large & Heavy and Extra Large items are available within our standard delivery area only.
Paint delivery Paint in tin cans 5L or less is available for delivery. Larger sizes and paint supplied in plastic buckets are available for Click & Collect only.
TJ O'Mahony offers a 30-day returns policy on eligible unused products, giving you additional time beyond the statutory 14-day cooling-off period applicable to most online consumer purchases.
Eligible products can be returned for a refund or exchange within 30 days of delivery or collection, provided they are unused, in their original and re-saleable condition, complete with all supplied parts and accessories, and accompanied by proof of purchase.
Please note: Return restrictions apply to certain products, including Mixed Paint, certain Bagged Building Products, Solid Fuel, Special Order, Non-Stock and Catalogued Products.
Your statutory rights in relation to faulty, damaged, incorrectly supplied or non-conforming goods are not affected.
