Browse our wide selection of trade quality 100mm concrete blocks, ideal for a variety of building construction projects. These versatile blocks are perfect for both domestic and commercial applications, offering strength and durability where it matters most. Whether you’re working on internal walls, external structures, or foundations, our range includes medium dense blocks for general use and high density blocks for more demanding, structural work.
Looking for something larger? Explore our full range of bricks and blocks, including 140mm blocks and 215mm blocks, all manufactured to meet modern building standards.
Don’t forget, when you sign up for a Travis Perkins trade account, you gain access to exclusive trade only prices and a range of helpful benefits tailored to professionals.











Our 100mm blocks are ideal for a range of construction projects, offering strength, durability, and reliability. These concrete blocks are perfect for use in load-bearing walls and general blockwork applications. Whether you are constructing a foundation or building non-loadbearing walls, our 100mm blocks are designed to meet the high standards required for both residential and commercial projects.
Constructing load-bearing walls for residential and commercial buildings
Building non-loadbearing partitions and internal walls
Creating foundations and structural elements for extensions and new builds
Supporting wall structures in both interior and exterior applications
Laying blocks for retaining walls and other structural features
Determine whether the blocks are for load-bearing or non-loadbearing applications
Check for appropriate block strength to ensure it meets your building regulations
Choose the correct block size for your project requirements and wall thickness
Select blocks based on their suitability for your specific site conditions, such as moisture resistance
Review the surface finish for aesthetic purposes, particularly for exposed walls
Ensure compatibility with other building materials, such as mortar and reinforcement
Confirm the number of blocks required based on your project dimensions. To help estimate the quantity you need for a project, use our Brick & Block calculator.
Review product specifications to ensure you’re choosing the right block type for the task
Ensure you have the necessary tools and materials for installation, such as mortar and reinforcement
Check product availability and delivery lead times to meet your project schedule
Consider additional items like foundation blocks for complete foundation solutions
Browse our full selection of 100mm blocks, ideal for various construction tasks. Need a different size? Explore our 140mm blocks and 215mm blocks for different applications. If you’re looking for additional building materials, our paving and walling range offers everything you need to complement your blockwork. For easy and convenient ordering, explore our Click & Collect and delivery options to have your materials delivered or ready for collection at your local branch.