Construction Materials
The materials that hold your home up. We design the structure first, then specify every beam, block and joist to suit it.
Structure
Construction materials
Structural steel
Steel beams, columns and padstones sized by our engineers for wall removals, wide openings and extensions. Fire protection added where Building Regulations require it.
- Universal beams and columns, S275 or S355 grade
- Parallel flange channels for flush openings
- Concrete or engineering-brick padstones
- Bolted connections and steel plates
- Intumescent paint or fire board for 30 to 60 minutes fire protection
Concrete and foundations
Trench-fill and strip foundations, ground-bearing and suspended slabs, with the concrete specified to suit the ground conditions on your site.
- Ready-mix concrete to BS 8500
- Trench-fill and strip footings
- A142, A252 and A393 steel reinforcement mesh
- Sand blinding and polythene membrane under slabs
Blockwork and brick
Concrete blocks for new walls and cavity construction, with facing bricks matched to your existing house where they will be seen.
- 7.3N dense concrete blocks for loadbearing walls
- Aircrete blocks for thermal performance
- Class B engineering bricks below damp-proof course
- Facing bricks matched to the existing house
- Stainless steel wall ties and wall starter kits
Structural timber
Strength-graded timber joists, rafters and stud walls, with engineered joists or glulam beams for longer spans.
- C24 strength-graded joists and rafters
- C16 timber for non-structural studs
- Engineered I-joists for long spans
- Glulam beams where timber is on show
- Treated timber, joist hangers and restraint straps
Insulation
Rigid insulation boards and mineral wool in floors, walls and roofs, to meet current thermal standards and keep running costs down.
- PIR insulation boards for floors and roofs
- Mineral wool cavity batts
- Acoustic mineral wool between floors
- Insulated plasterboard for upgrading existing walls
Roofing
Warm flat roofs with a durable single-ply or GRP finish, pitched roofs in tiles or slate to match, plus roof lanterns and rooflights.
- EPDM single-ply or GRP fibreglass flat roofs
- OSB3 roof decks and vapour control layers
- Concrete or clay tiles and natural slate
- Breathable membranes and treated battens
- Aluminium roof lanterns and rooflights
Damp proofing and membranes
Damp-proof courses, damp-proof membranes, cavity trays and breathable membranes to keep the new structure dry.
- Polyethylene damp-proof course
- 1200 gauge damp-proof membrane
- Cavity trays and weep vents
- Cementitious tanking for basements and below ground
Windows and external doors
Double-glazed windows, sliding and bifold doors in aluminium or uPVC, set into openings designed for them.
- Thermally broken aluminium sliding and bifold doors
- Double-glazed aluminium or uPVC windows
- Toughened and laminated safety glass
- Galvanised steel lintels over openings
Drainage
New below-ground drainage, connections and gullies, laid to falls and tested before the floor goes down.
- 110mm PVC-U underground pipe
- Inspection chambers and rodding access
- Gullies and channel drains
- Pea gravel bedding and air testing before backfill
Included
What you get
- Materials specified on our structural drawings
- Steel sizes and grades confirmed by calculation
- Building Control approved details
- Quality checked on delivery
- Clear explanation of what is going in and why
Planning an extension or loft?
Send us your plans or a few photos and we will come back with a fixed quote, for design only, or for design, build and fit-out.