300mm Celcon H+H Standard Aerated 3.6N Concrete Foundation Block
Lightweight aerated concrete block for below-ground use. Suitable for foundation walls and courses below damp proof course. Offers strength, insulation, and ease of handling in low to medium-load applications.
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Product Overview
Lightweight aerated concrete block for below-ground use. Suitable for foundation walls and courses below damp proof course. Offers strength, insulation, and ease of handling in low to medium-load applications.
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
| Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products | |
|---|---|
| ORDER VALUE | DELIVERY CHARGE |
| Under £100 | £15 ex. VAT |
| Between £100 - £300 ex. VAT | £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
- {{fitness_center}} Compressive strength of 3.6N/mm²
- {{home}} Ideal for solid wall construction and load-bearing applications
- {{file_download}} Engineered for below-ground foundation application
- {{whatshot}} Non-combustible design provides exceptional fire safety
Technical Specification
| Thickness: | 300mm |
|---|---|
| Length: | 440mm |
| Height: | 215mm |
| Sales Unit: | Each |
| Brand: | Celcon |
| Manufacturer's Reference: | SFC30030 |
| Weight: | 17.5kg |
| Compressive Strength: | 3.6N |
Product Overview
300mm Celcon H+H Standard Aerated 3.6N Concrete Foundation Block, designed for below-ground foundation walls and courses below damp proof course.
Provides strength, insulation, and reliable support in low to medium-load residential and commercial applications.
Features & Benefits
- Compressive strength 3.6N/mm²: Suitable for foundation work in multi-storey buildings and heavy-load areas.
- Lightweight aerated concrete: Easier to handle and install, reducing labour effort on site.
- Thermal efficiency: Aerated structure provides better insulation than dense concrete blocks.
- Class A1 fire resistance: Non-combustible, meeting the highest standard for fire safety.
- Frost resistance: Withstands freeze-thaw cycles for long-term durability in varying climates.
- Sulfate resistance (DS1–DS4 soils): Reliable in mild to severe sulfate conditions below ground.
- Quality assurance: Manufactured under strict controls for consistent strength and performance.
- Versatile application: Suitable for foundations, solid walls, cavity walls, and beam & block flooring.
Please Note: Blocks are designed for below-ground use and must be laid without mortar perpends when installed underground. Always follow engineer’s guidance for load-bearing requirements and soil condition suitability.
Applications
- Foundation walls (below DPC): Provides a stable, load-bearing base in residential and commercial construction.
- Solid or cavity walls: Supports a wide range of wall designs for structural flexibility.
- Suspended floors: Compatible with beam and block floor systems for ground or basement levels.
- Framed construction support: Used below ground to stabilise structural frames in framed buildings.
Installation Guidance
- Laying below ground without mortar perpends: Ensures proper drainage and installation efficiency.
- Follow engineer’s embedment depth requirements: Guarantees foundations perform to structural design.
- Bed blocks on suitable mortar: Provides stable seating and maximises load-bearing capacity.
Compliance & Performance
- Compressive strength 3.6N/mm²: Meets structural requirements for foundation blockwork.
- Sulfate condition suitability (DS1–DS4): Designed for use in soils with low to high sulfate levels. Resistant to sulfate attack in categories DS1 (mild exposure) through DS4 (severe exposure), ensuring durability across a wide range of ground conditions.
