Insulation

Key Options Within Our Insulation Selection

Our stock spans multiple formats to match your project specifications and installation preferences..

Foil-Faced PIR Insulation & Polystyrene Sheets

Rigid insulation boards provide high thermal resistance in minimal thickness, making them ideal for tight spaces where every millimetre counts. Foil-faced PIR and polystyrene sheets work well in flat roofs, solid walls, and underfloor applications where compressive strength matters. The foil facings reflect radiant heat and provide vapour control, reducing condensation risks in closed cavities. These boards cut cleanly with a fine toothed saw and fix mechanically or with adhesive.

Mineral Wool Cavity & Loft Insulation

Flexible batts and rolls suit uneven joists and stud frameworks where rigid boards would leave gaps. Mineral wool products offer excellent acoustic damping alongside thermal performance, reducing noise transmission between floors and rooms. The material remains non combustible, adding fire resistance to timber framed structures. Loft insulation in roll format lays quickly between joists, while cavity batts fit partial fill or full fill wall constructions. Mineral wool maintains performance even in humid conditions.

Eco Fill Insulation

Loose fill materials provide cost effective coverage for irregular loft spaces and hard to reach voids. Eco fill options pour or blow into place to form a continuous layer without gaps around pipework or cable runs.

The material compresses minimally over time and allows easy access for future maintenance work on services running through the loft.

Thermal conductivity values, thickness requirements, and fire ratings vary across our range, so matching the specification to your building type is critical. We carry stock suitable for new builds aiming for high SAP scores, and retrofit jobs upgrading older properties to modern energy standards. 

Shop Insulation at Joseph Parr Northants

Order your insulation equipment online now at Joseph Parr Northants. We offer fast local delivery and click and collect options to give you flexibility.

Joseph Parr Northants combines extensive product knowledge with practical support for construction projects. We understand thermal bridging, U value calculations, and compliance documents, helping you select materials that meet Building Control approval. 

Request a quote and we'll provide itemised pricing with delivery costs included. 

Need additional advice? Please contact us, and we will point you in the right direction.