2400 x 1200 Insulation boards

2400 x 1200 Insulation boardsInsulation boards sized 2400 x 1200 mm are a versatile rigid insulation solution widely used in floors, walls, and roofs across domestic and commercial builds. Available from Nottage Timber Merchants in thicknesses of 25 mm, 50 mm, 75 mm, and 100 mm to suit varying thermal performance requirements. Specifications Property Detail Nominal Size 2400 x 1200 mm Available Thicknesses 25 mm, 50 mm, 75 mm, 100 mm Material Rigid insulation board Finish Flat

Insulation boards sized 2400 x 1200 mm are a versatile rigid insulation solution widely used in floors, walls, and roofs across domestic and commercial builds. Available from Nottage Timber Merchants in thicknesses of 25 mm, 50 mm, 75 mm, and 100 mm to suit varying thermal performance requirements.

Specifications

What it's used for

• Floor insulation beneath screed or timber floating floors, reducing heat loss through ground slabs
• Wall insulation in cavity or solid wall construction, improving thermal performance and reducing energy bills
• Roof and loft insulation laid between or over rafters and joists to meet building regulation U-value targets
• Insulating stud partitions and internal walls where reduced thickness and rigid support are needed

Fitting and handling

Store boards flat on a level surface, away from moisture and direct sunlight, to prevent warping or surface degradation before installation. When cutting, use a fine-toothed saw or a sharp knife and straight edge for clean, accurate edges that butt tightly together and minimise thermal bridging. Always follow current UK Building Regulations Part L guidance and manufacturer recommendations for the specific board type when calculating required thicknesses and fixings.

FAQ

What thickness of insulation board do I need for a floor?

The required thickness depends on the existing construction and your target U-value. For a ground floor, 75 mm or 100 mm is commonly specified to achieve current Part L compliance, though a building control officer or energy assessor can confirm the right specification for your project.

Can these insulation boards be used in a flat roof build-up?

Yes, rigid insulation boards are frequently used in warm and cold flat roof constructions, placed above or between the deck and weatherproofing layer. Always check compatibility with your roofing membrane and ensure adequate falls are maintained for drainage.

Are these boards sold per sheet?

Yes, insulation boards are priced and sold per individual 2400 x 1200 mm sheet. If you need larger quantities for a project, contact Nottage Timber Merchants directly to discuss volume pricing and delivery options.

Nottage Timber Merchants stocks a broad range of sheet materials to complement your insulation work. Browse our subfloor and loft boards for further options, and get in touch if you need next-day delivery to Bridgend or across South Wales.