For a warm, energy-efficient home built to modern standards, the Knauf Earthwool Loft Roll 44 200mm Combi (6.84m²) (Product Code: 12715820) is a dependable trade and DIY favourite at TJ O’Mahony. Designed for insulating cold loft spaces, this high-performance mineral wool roll delivers excellent thermal results while remaining easy to handle and install.
Manufactured using Knauf’s innovative ECOSE® Technology, this insulation is soft to touch, low in dust, and odourless – making it more pleasant to work with on site. The 200mm Combi roll is designed to be laid over existing insulation to help you reach the required depth for current Building Regulations, reducing heat loss through the roof and helping cut energy bills all year round.
Ideal for both new builds and retrofit projects, it offers a practical, cost-effective solution whether you're topping up existing loft insulation or starting from scratch.
Key Features:
High Thermal Performance: Excellent thermal conductivity to help achieve required U-values in loft applications.
200mm Combi Roll: Perfect for topping up existing insulation to recommended levels.
Generous Coverage: Covers 6.84m² per roll for efficient installation.
Soft & Easy to Install: Flexible mineral wool that friction-fits between joists with minimal cutting.
ECOSE® Technology: Low dust, low odour, and made using a bio-based binder.
Non-Combustible: Euroclass A1 fire rating for added peace of mind.
Technical Specifications:
Product Code: 12715820
Thickness: 200mm
Coverage per Roll: 6.84m²
Material: Mineral Wool
Thermal Conductivity: 0.044 W/mK
Reaction to Fire: A1 (Non-Combustible)
TJ’s Tip:
For best results, lay the insulation between and then across the joists to minimise thermal bridging and achieve the correct overall depth. Always ensure good ventilation is maintained at the eaves. Wearing gloves, long sleeves, and a dust mask will make installation more comfortable on the job.
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.
