This product is our standard concrete block, suitable for a wide range of applications. We source it from various distributors across the UK, all of whom meet the required standards for quality and strength. However, not all of these blocks are certified to BS EN 12620. If BS EN 12620 certification is essential for your project, we recommend ordering a branded product such as Celcon, which comes with confirmed BBA certification. Alternatively, please contact the Materials Market team before purchasing so we can ensure the product meets your project requirements.
Most Popular
.jpg)
0 Reviews
View Product Reviews100mm Solid Dense 7.3N Concrete Block
URN: 5003187
Core
£1.55ex. VAT
£16.38 per m2
100mm Solid Dense 7.3N Concrete Block is ideal for cavity/solid wall constructions as well as internal load-bearing walls and block and beam flooring. Water resistant with good acoustic properties.
Express Delivery
Tue 17 Jun
Standard Delivery
Wed 18 Jun
- 1days
- 21hrs
- 29mins
- 4secs
Make 3 payments of £0.52 with 
Learn more
Learn more
Pay in 3 interest-free payments
Split your purchase of £1.55 into 3 with no sign-up fees or late fees.
£0.52
today
£0.52
1 month
£0.52
2 months
How it works
- Choose PayPal at checkout to pay later with Pay in 3.
- Complete your purchase with the first payment today.
- Remaining payments are taken automatically.
Pay in 3 is a form of credit, so carefully consider whether the purchase is affordable and how you will make the repayments. Be aware of the possible impact of using Pay in 3 and of missing payments, including making other borrowing more difficult or more expensive. Pay in 3 eligibility is subject to status and approval. 18+ UK residents only. Available for purchases of £30 to £2,000. Terms and conditions apply. PayPal Pay in 3 is a trading name of PayPal (Europe) S.à r.l. et Cie, S.C.A. 22-24 Boulevard Royal L-2449, Luxembourg.
Make 3 payments of £0.52 with 
Learn more
Learn more
Buy now. Pay with Klarna at your own pace.
Get what you need for your next project, choose how you pay.
Pay in 30 days
£1.55
Pay in full
Klarna's Pay in 30 days is an unregulated credit agreement. Borrowing more than you can afford or paying late may negatively impact your financial status and ability to obtain credit. 18+, UK residents only. Subject to status. T&Cs and late fees apply.
Pay over time
£0.52
Every 30 days
Pay in 3
£0.52
today
£0.52
in 30 days
£0.52
in 60 days
Klarna's Pay in 3 is an unregulated credit agreement. Borrowing more than you can afford or paying late may negatively impact your financial status and ability to obtain credit. 18+, UK residents only. Subject to status. T&Cs and late fees apply.
How it works
- At checkout select Klarna.
- Choose your payment plan.
- Different payment plans may be shown depending on the purchase amount and credit score.
- Complete your checkout.
- The amount will be charged based on the payment plan you chose.
Make 4 payments of £0.39 with 
Learn more
Learn more
Pay in 4 interest-free payments
Split your purchase of £1.55 into 4 with no sign-up fees or late fees. Your purchase will be split into 4 payments, payable every 2 weeks
£0.39
today
£0.39
second payment
£0.39
third payment
£0.39
fourth payment
How it works
- Choose Clearpay at checkout to pay later with Pay in 4.
- Complete your purchase with the first payment today.
- Remaining payments are taken automatically.
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 Overview
100mm Solid Dense 7.3N Concrete Block is ideal for cavity/solid wall constructions as well as internal load-bearing walls and block and beam flooring. Water resistant with good acoustic properties.
URN: 5003187
£1.55ex. VAT
Frequently Bought With
.jpg)
Delivery & Returns Information
All delivery charges are shown in your basket and are dependent on the total value of items in your basket based on product category.
This charge is based on delivery to mainland UK excluding the following postcodes: AB, CF, DD, DG, KW, IV, LD, LL, NP, PH, SA and SY. If your delivery address is in any of these postcode areas a member of our customer service team will contact you prior to processing your order should an additional delivery charge apply. We do not offer deliveries outside the UK mainland.
Standard (Nationwide) Delivery
|
Core Products Core
|
|
|---|---|
| ORDER VALUE | DELIVERY CHARGE |
| Under £300 ex. VAT | £25 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 £100 | £20 ex. VAT |
| Between £100 - £250 ex. VAT | £15 ex. VAT |
| Over £250 ex. VAT | FREE |
| Insulation, Plasterboard and Drylining Products | |
| ORDER VALUE | DELIVERY CHARGE |
| Under £150 | £50 ex. VAT |
| Between £150 - £400 ex. VAT | £35 ex. VAT |
| Over £400 ex. VAT | FREE |
| SuperFOIL and YBS products | |
| ORDER VALUE | DELIVERY CHARGE |
| Each item | £10 ex. VAT |
| Over £350 ex. VAT of 1 brand | FREE |
| Screws & Fixings and Adhesives & Sealants | |
| ORDER VALUE | DELIVERY CHARGE |
| Under £100 | £7.50 ex. VAT |
| Over £100 ex. VAT | FREE |
Express Delivery
| 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 |
| Express Delivery - Insulation and Plasterboard & Drylining | |
| ORDER VALUE | DELIVERY CHARGE |
| Under £400 | £50 ex. VAT |
| Over £400 ex. VAT | £35 ex. VAT |
Returns
We offer a 30 day returns policy on any faulty products.
Key Features
{{fitness_center}} Provides exceptional structural strength
{{volume_off}} Excellent natural sound insulation
{{local_fire_department}} Inherent non-combustible fire resistance
{{private_connectivity}} Allows for secure heavy-duty fixings
Technical Specification
| Thickness: | 100mm |
|---|---|
| Length: | 440mm |
| Height: | 215mm |
| Sales Unit: | Each |
| Weight: | 18.8kg |
| Compressive Strength: | 7.3N |
Orders large enough to require a pallet will require a £20 ex VAT refundable pallet charge to be paid per pallet. Our customer service team will reach out to you if this applies to your order.
What Is a 100mm Solid Dense 7.3N Block?
100mm Solid Dense 7.3N Block is a solid masonry block manufactured from a dense aggregate of sand, cement, and crushed stone. It is produced to a standard size of 440mm x 215mm x 100mm and is defined by its minimum compressive strength of 7.3 Newtons per square millimetre (N/mm²).
This strength rating verifies its suitability for load-bearing applications. The block's high density gives it specific physical properties related to mass, such as excellent sound insulation and durability.
Its manufacture and properties are governed by the European standard BS EN 771-3. Here’s a quick breakdown of what this means for your project:
- BS EN: This signifies a unified British and European Norm (Standard). It means the product meets standards that are respected both nationally and internationally.
- 771-3: This is the specific "rulebook" for aggregate concrete blocks.
Applications
- Foundations: The standard choice for constructing foundation walls and sleeper walls below the Damp Proof Course (DPC).
- Internal Load-Bearing Walls: Used to support upper floors, ceilings, and roof structures.
- Party & Separating Walls: Ideal for building robust walls between dwellings that provide both fire and sound resistance.
- External Wall Construction: Forms the structural inner leaf of a traditional cavity wall or a solid wall that is designed to be protected by render, cladding, or other weatherproof finishes.
- Structural Partitions: Ideal for creating solid and durable internal partitions in any area of a building.
Benefits
- Structural Strength: With a certified compressive strength of 7.3N/mm², it provides a reliable and robust solution for load-bearing structures.
- Acoustic Insulation: The high mass of the block creates an effective barrier to airborne sound, making it ideal for party walls and internal partitions where reducing noise transfer is important.
- Inherent Durability: Dense concrete composition is highly resilient to physical impact and abrasion, ensuring a long service life.
- Fire Resistance: As a non-combustible material, it holds a Euroclass A1 fire rating, contributing to the overall fire safety of a building.
- Secure Base for Fixings: Solid structure provides a strong, reliable background for securely anchoring heavy items like radiators, kitchen units, and shelving using appropriate fixings.
- Frost Resistance: Manufactured to be frost-resistant, making it suitable for use in external applications as part of a detailed walling system.
