The Kilsaran Class B Engineering Brick is a dense aggregate concrete masonry unit for demanding civil engineering and construction applications. Its 50N/mm² characteristic compressive strength makes it suitable where a high-strength solid brick is required.
The grey 215 x 102 x 65mm unit is intended for uses such as manholes, inspection chambers, foundations and other engineering masonry. Its declared properties include Class A1 reaction to fire and a gross dry density above 2000kg/m³.
Key Features
50N/mm² characteristic compressive strength for demanding engineering masonry.
Solid Category I aggregate concrete unit for consistent structural performance.
Compact standard brick format works with conventional masonry layouts.
Class A1 reaction to fire supports non-combustible masonry construction.
Technical Information
Product type: Class B engineering quality brick
Material: Aggregate concrete masonry
Colour: Grey
Dimensions: 215 x 102 x 65mm
Unit category: Category I
Dimensional tolerance: Class D1
Configuration: Group 1 unit to I.S. EN 1996-1-1
Characteristic compressive strength: 50N/mm²
Moisture movement: Less than 0.6mm/m
Shear bond strength: 0.15N/mm² tabulated value to I.S. EN 998-2
Reaction to fire: Class A1
Water vapour permeability: 5/15µ
Gross dry density: Greater than 2000kg/m³
Thermal conductivity: 1.00-1.11W/mK
Manufacturing standard: EN 771-3
Please Note
Freeze-thaw durability is not declared in the product declaration; do not leave the unit exposed where declared freeze-thaw performance is required.
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.
