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View Product Reviews100mm Celcon H+H Standard Grade Plain Face 3.6N Block
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Lightweight aircrete block for general construction. Suitable for internal and external walls above and below damp proof course. Standard 100mm thickness balances insulation, workability, and strength for low-rise use.
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Product Overview
Lightweight aircrete block for general construction. Suitable for internal and external walls above and below damp proof course. Standard 100mm thickness balances insulation, workability, and strength for low-rise use.
Delivery & Returns Information
How Our Delivery Works
We work with a nationwide network of trusted suppliers. As a result, items in your basket may be supplied by different suppliers and delivered separately. Where this applies, you'll see multiple delivery charges at checkout. We always aim to group products from the same supplier to keep delivery costs as low as possible.
Delivery Areas & Charges
Delivery charges listed on our website apply to mainland UK, excluding the following postcode areas: AB, CF, DD, DG, FK, KW, IV, LA, LD, LL, NP, PA, PH, SA, SY
If your delivery address falls within one of these postcode areas, we’ll be in touch before processing your order to confirm any additional delivery costs.
Please note: We do not currently offer delivery outside the UK mainland.
Standard (Nationwide) Delivery
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Core Products Core
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|---|---|
| ORDER VALUE | DELIVERY CHARGE |
| Under £300 ex. VAT | £20 ex. VAT |
| Over £300 ex. VAT | FREE |
Core Delivery charges apply only when all products in an order that have equivalents are accepted as such. If even one product cannot be substituted with an equivalent, the entire order will not qualify for Core Delivery charges.
| Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products | |
|---|---|
| ORDER VALUE | DELIVERY CHARGE |
| Under £300 | £10 ex. VAT |
| Over £300 ex. VAT | FREE |
| Insulation, Plasterboard and Drylining Products | |
| ORDER VALUE | DELIVERY CHARGE |
| Under £350 | £35 ex. VAT |
| Over £350 ex. VAT | FREE |
| Screws & Fixings and Adhesives & Sealants | |
| ORDER VALUE | DELIVERY CHARGE |
| Under £50 | £5 ex. VAT |
| Over £50 ex. VAT | FREE |
Express Delivery
| Express Delivery - Insulation and Plasterboard & Drylining | |
|---|---|
| ORDER VALUE | DELIVERY CHARGE |
| Under £400 | £50 ex. VAT |
| Over £400 ex. VAT | £35 ex. VAT |
| Express Delivery - Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products | |
| ORDER VALUE | DELIVERY CHARGE |
| Under £300 | £50 ex. VAT |
| Over £300 ex. VAT | £35 ex. VAT |
Returns
We offer a 30 day returns policy on any faulty products.
Key Features
- {{open_in_full}} Suitable below and above ground
- {{thermostat}} Excellent thermal insulation properties
- {{local_fire_department}} Fire resistant (Euroclass A1 rated)
- {{apps}} Versatile across all wall types
Technical Specification
| Product: | Standard Grade |
|---|---|
| Thickness: | 100mm |
| Length: | 440mm |
| Height: | 215mm |
| Sales Unit: | Each |
| Sales Unit Coverage: | 0.1m2 |
| Brand: | Celcon |
| Manufacturer's Reference: | SRC100100 |
| Weight: | 5.68kg |
| Compressive Strength: | 3.6N |
| Thermal Conductivity: | 0.15W/mK |
Technical Downloads
Product Overview
100mm Celcon H+H Standard Grade aircrete block, measuring 440mm x 215mm x 100mm, with a plain face and compressive strength of 3.6N/mm².
Produced from autoclaved aerated concrete (AAC) at a dry density of around 600kg/m³, the block combines lightweight construction with reliable strength, enabling faster build programmes and lower foundation loads without compromising compliance.
With a thermal conductivity of 0.15 W/m·K, it delivers excellent insulation compared to dense concrete units, helping buildings meet energy standards cost-effectively. Its mass also improves acoustic performance, making it well suited for internal partitions and separating walls.
Non-combustible (Euroclass A1) and frost-resistant, the block is safe for use both above and below DPC. Versatile in application, it can be used in cavity and solid walls, partitions, and beam-and-block flooring across residential, commercial, and multi-storey developments.
As the recognised standard thickness, 100mm offers a dependable balance of strength, insulation, and ease of handling for common walling applications.
Features & Benefits
- 3.6N/mm² compressive strength: Provides certified strength for use in structural and non-structural applications.
- Lightweight aircrete construction: Reduces manual handling strain and speeds installation.
- Thermal conductivity 0.15 W/m·K: Contributes to compliance with Part L of Building Regulations.
- Sound insulation performance: Cellular structure reduces airborne sound transmission through walls.
- Non-combustible (Euroclass A1): Will not contribute to fire spread, enhancing building safety.
- Resistant to freeze-thaw: Reliable for external walling and below-DPC applications.
- Average dry density ~600kg/m³: Balances lightweight handling with structural stability.
- Standard size 440mm x 215mm x 100mm: Fully compatible with traditional UK brick and block coursing.
- 100mm thickness: Provides reliable load-bearing strength while remaining lightweight and easy to handle for standard walling applications.
Please Note: Orders requiring a pallet will incur a refundable pallet charge of £20 ex VAT per pallet. Our customer service team will confirm if this applies to your order.
Applications
- Can be used with cavity wall construction: Suitable for both inner and outer leaves in low-rise and multi-storey projects.
- Solid wall construction: Offers strength and thermal performance for single-leaf walling.
- Below-DPC and foundation use: Appropriate for groundworks and substructure walls when specified correctly.
- Internal partitions and separating walls: Effective for divisions requiring fire and acoustic performance.
Installation Guidance
- Mortar bedding: Suitable for use with traditional sand/cement mortars or thin-joint systems for faster build.
- Cutting and chasing: Easily cut, chased, or drilled using hand saws or power tools, simplifying detailing.
- Finishing: Accepts plaster, render, cladding, or drylining systems, depending on project requirements.
Compliance & Performance
- Compressive strength 3.6N/mm²: Meets structural requirements for walls in domestic and commercial buildings.
- BS EN 771-4 compliance: Manufactured in accordance with European standards for autoclaved aerated concrete blocks
