For a solid, dependable base on any groundwork project, the Hardcore 804 Jumbo Bag (Product Code: 17HARDCR01) is a must-have for trade professionals and DIYers alike at TJ O’Mahony. Ideal for creating strong, stable sub-bases, this mixed aggregate is perfect for driveways, patios, paths, shed bases, and general construction work.
Made up of crushed stone and fines that compact down tightly, 804 hardcore forms a firm foundation that minimises movement and improves load-bearing capacity. Supplied in a convenient jumbo bag, it’s easy to handle on site and ideal for projects where loose loads aren’t practical.
Whether you're laying paving, preparing for concrete, or building up levels, this is the go-to material for achieving a professional, long-lasting finish.
Key Features:
High Compaction Strength: Mix of crushed stone and fines binds tightly for a stable base.
Versatile Use: Ideal for patios, driveways, footpaths, kerbing, and concrete bases.
Jumbo Bag Convenience: Easy to transport, store, and manage on site.
Reliable Load Bearing: Provides a solid sub-base to reduce settlement and movement.
Trade-Quality Material: Suitable for domestic and light commercial groundwork projects.
Technical Specifications:
Product Code: 17HARDCR01
Bag Size: Jumbo Bag (approx. 1 tonne, subject to moisture content)
Material: Crushed aggregate with fines
Application: Sub-base for paving, driveways, and concrete works
TJ’s Tip:
For best results, lay in layers of 75–100mm and compact thoroughly with a whacker plate between each layer. Proper compaction is key to preventing future sinking or cracking — take your time here and your finished surface will thank you.
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.
