Wienerberger K109 Solid Blue Engineering Engineering Brick Pack of 400

Wienerberger K109 Blue Solid Class B Engineering Brick

The Wienerberger K109 Blue Solid Class B Engineering Brick is designed for heavy-duty performance where strength, moisture resistance, and long-term durability are essential. Being solid and non-perforated, it provides maximum stability and resilience, making it suitable for foundations, retaining walls, damp-proof courses, and other demanding applications. Combining a solid format with the characteristic Staffordshire blue finish, the K109 is a dependable choice when selecting engineering bricks online, providing customers who want to buy engineering bricks with strong resistance to moisture, frost and heavy structural loads. Unlike facing bricks, engineering bricks are specified for technical properties rather than appearance. Colour and surface finish may vary, so for visible facades a facing brick is often a better choice.

Key Specifications

• Size:215mm × 102.5mm × 65mm
• Colour:Blue
• Texture:Smooth, Solid Engineering Brick
• Water Absorption:? 7%
• Durability:F2
• Compressive Strength:? 75 N/mm²
• Pack Quantity:504
• Active Soluble Salts:S2
• Gross Dry Density:1800 kg/m³
• Reaction to Fire:Class A1

Description & Usage Notes

Manufactured for strength and durability, the K109 is a reliable choice for structural and below-ground projects. With compressive strength of ? 75 N/mm² and low water absorption of ? 7%, it offers robust resistance to water ingress and structural stress. Its F2 frost resistance ensures performance in typical UK exposure conditions. Because engineering bricks prioritise function, they may not have a uniform surface or shade. They are best used where technical performance is the priority. Always ensure correct detailing — including suitable mortar, proper drainage, and cavity design — to maximise service life.

FAQs

What makes this a Class B engineering brick?

It meets the standard for Class B, offering compressive strength of ? 75 N/mm² and water absorption of ? 7%, making it suitable for most structural and moisture-prone applications.

Why choose a solid engineering brick over perforated?

A solid brick provides maximum strength and reduced water pathways, making it especially suitable for heavy load-bearing or below-ground conditions.

Can this brick be used in visible facades?

It can, but its appearance is secondary to performance. If aesthetics are important, a facing brick would be a better option.

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Roof Tiles & Fittings:

We recommend ordering an additional 10% of roof tiles to allow for any breakages that may occur during delivery or handling. Roof tiles are naturally fragile, and having a few extra on site helps prevent delays and ensures your roofing project can be completed without interruption.

Multiple Products from the Same Supplier

If you're ordering multiple products from the same supplier, your order will be dispatched together once all items are ready. This means the longest lead time will apply.

If you need part of your order sooner, please call us on 01202 113233. We can arrange a split delivery, although an additional shipping charge will apply.