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1 Review
View Product Reviews100mm Celcon H+H Standard Grade Plain Face 3.6N Block
Product
Nationwide Delivery
Fri 12 Jun
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- Choose Clearpay at checkout to pay later with Pay in 4.
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Clearpay is unregulated credit. Use responsibly. 18+, T&Cs and late fees apply at clearpay.co.uk/en-GB
Clearpay lends you a fixed amount of credit so you can pay for your purchase over 4 instalments, due every 2 weeks. Ensure you can make repayments on time. You must be 18+ and a permanent UK resident (excl Channel Islands). Clearpay charges a £6 late fee for each late instalment and a further £6 if it’s still unpaid 7 days later. Late fees are capped at £6 for orders under £24 and the lower of £24 or 25% of the order value for orders over £24. Missed payments may affect your ability to use Clearpay in the future and your details may be passed onto a debt collection agency working on Clearpay’s behalf. Clearpay is credit that is not regulated by the Financial Conduct Authority. T&Cs and other eligibility criteria apply at clearpay.co.uk/terms
Product
Delivery & Returns Information
Delivery charges vary by product category and order value. Items may ship from different suppliers and arrive separately, so delivery charges can be shown per part of your order at checkout.
Standard (Nationwide) Delivery
|
Core Products Core
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|---|---|
| ORDER VALUE | DELIVERY CHARGE |
| Under £300 ex. VAT | £30 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 | £25 ex. VAT |
| Over £300 ex. VAT | FREE |
Express Delivery
| Express Delivery - Insulation and Plasterboard & Drylining | |
|---|---|
| ORDER VALUE | DELIVERY CHARGE |
| Under £400 | £90 ex. VAT |
| Over £400 ex. VAT | £55 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 |
How delivery works
We work with a nationwide network of trusted suppliers. Items in your basket may be supplied by different suppliers and delivered separately. Where this applies, you will see delivery charges shown at checkout for each part of your order. We always aim to group products from the same supplier to keep delivery costs as low as possible.
Delivery areas
Delivery charges apply to mainland UK, excluding: AB, CA, CF, DD, DG, EH, EX, FK, KA, KW, KY, IV, LA, LD, LL, ML, NP, PA, PH, PL, SA, SY, TR, TQ and TD.
If your address is in one of these areas, we will contact you before processing your order to confirm any additional costs. We do not currently offer delivery outside the UK mainland.
What to expect on delivery day
- Deliveries are typically kerbside.
- Please ensure someone is on-site to accept delivery. For heavier items, help with offloading may be required.
- Many building materials arrive on large vehicles. If access is restricted, a specialist vehicle such as a HIAB may be required and could incur an additional charge.
Why delivery can cost more than typical parcel delivery
Building materials often travel on larger vehicles and usually carry fewer drops per run than parcel networks. That is why delivery charges can be higher than standard e-commerce shipping.
Returns
Returns depend on what you have bought and whether there is anything wrong with it. For full details on eligibility, timeframes, and exclusions, please see our full policy.
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
| URN: | 5003006 |
|---|---|
| Product: | Standard Grade |
| Brand: | Celcon |
| Application: | Internal & External Leaf Cavity Walls, Separating Walls, Internal Partitions |
| Indoor/Outdoor Usage: | Indoor & Outdoor |
| Material Type: | Autoclaved Aerated Concrete |
| Thickness: | 100mm |
| Length: | 440mm |
| Height: | 215mm |
| Weight: | 7kg |
| Sales Unit: | Each |
| Sales Unit Coverage: | 0.1m2 |
| Fire Rating: | A1 Non-Combustible |
| Moisture Resistant: | Yes |
| Thermal Conductivity: | 0.15W/mK |
| Compressive Strength: | 3.6N |
| Density: | 600kg/m3 |
| Certification: | BBA Certified |
| Product Standard: | BS EN 771-1 |
| Grade: | Standard Grade |
| Edge: | Square |
| Colour: | Natural / Grey |
| Manufacturer's Reference: | SRC100100 |
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.
Applications
- Cavity walls external leaf below DPC: Suitable for supporting wall assemblies in below-ground conditions.
- Cavity walls external leaf above DPC: Provides structural strength and thermal protection for the external building envelope.
- Cavity walls inner leaf above DPC: Delivers load-bearing support for internal structures above the damp-proof course.
- Cavity walls inner leaf below DPC: Maintains structural integrity for foundation-level masonry requirements.
- Separating walls: Facilitates robust partition construction between units for acoustic and thermal performance.
Installation Guidance
- Surface preparation: Ensure foundations are level and free from debris to guarantee a stable base for the first course.
- Mortar application: Use thin-joint or traditional mortar to secure blocks, ensuring a strong bond and minimised cold bridging.
- Jointing: Stagger all vertical joints across subsequent courses to distribute loads effectively and prevent cracking.
- Alignment: Use appropriate levelling tools during installation to maintain consistent wall plumb and finish.
Compliance & Performance
- Compressive strength (3.6N/mm²): Fully compliant with design requirements for low-rise structural walling.
- Service class: Rated for both internal and external masonry applications above ground level.
- Finishing: Engineered with a texture that provides an excellent key for the application of standard renders and plasters.
- Pallet Charge: Orders requiring a pallet will incur a refundable pallet charge. Our customer service team will confirm if this applies to your order.
Customer Reviews
Great blocks!
