Free Insulation Contractor Invoice Template

What is an Insulation Contractor invoice?

An insulation contractor invoice covers the installation of thermal and acoustic insulation materials in lofts, cavity walls, solid walls (external or internal), floors, and roof systems. Insulation work in the UK often qualifies for VAT at the reduced rate of 5% for qualifying energy-saving materials installed in domestic properties. Domestic insulation may also be subsidised through government schemes such as the Energy Company Obligation (ECO4) or Great British Insulation Scheme. Invoices for ECO-funded work must comply with scheme-specific documentation requirements. Commercial insulation on new builds or large refurbishments is subject to standard VAT at 20%. Material and labour are typically quoted as an all-in fixed price per area (m² or linear metre).

What to include on an Insulation Contractor invoice

• Property address and insulation type
• Area insulated (m²) and material specification (insulation type and thickness)
• Installation method (blown, batts, rigid boards)
• Guarantee or warranty provided
• ECO or scheme funding reference (if applicable)
• VAT rate applied (5% for qualifying domestic works)
• Building Regulations or EPC improvement details
• Materials with R-value or thermal performance spec
• Labour and access costs
• Payment terms

Common insulation contractor invoice line items

How to invoice as an insulation contractor

For domestic insulation qualifying for reduced VAT, apply 5% VAT and note the qualifying works on the invoice. For ECO-funded work, follow the scheme's invoicing and documentation requirements. For commercial projects, apply 20% VAT. Invoice on completion and attach the manufacturer's product certificates and any scheme completion documents.