Manthorpe
Manthorpe is a leading British manufacturer of high-quality building components, based in Derbyshire. With over 35 years of experience, the company specialises in designing and producing innovative solutions for the construction industry, with a strong focus on roofing, ventilation, and cavity protection systems.
Their extensive product portfolio includes:
- Roofing accessories – dry fix systems, tile vents, and underlays
- Wall and floor ventilation – airbricks, ducting, and weep vents
- Cavity trays, closers & barriers – for damp prevention and thermal efficiency
- Loft and access products – hatches, ladders, and fire-rated solutions
- Rainwater and drainage components – including roof outlets and pipe seals
- Environmental innovations – such as bat roosting systems and air leakage prevention kits
Manthorpe is known for its commitment to sustainability, precision engineering, and compliance with UK building regulations. All products are designed and manufactured in-house at their Derbyshire facility, using advanced tooling and production techniques. Whether supporting large-scale developments or bespoke builds, Manthorpe delivers practical, reliable, and forward-thinking solutions that help construction professionals build better, safer, and more efficient structures.
Brand: Manthorpe
Model and Size: G240-100 - 2.5m
Delivery Time: 1 - 2 days
G240 100mm Double Flange Thermal Cavity Closer from Manthorpe Building Products is a high-performance cavity closer designed to provide thermal insulation and moisture control at door and window reveals in cavity wall constructions. Featuring a double flange profile, it offers secure positioning wit..
£67.69
£81.23 inc VAT
Brand: Manthorpe
Model and Size: G240-125 - 2.5m
Delivery Time: 1 - 2 days
G240 125mm Double Flange Thermal Cavity Closer from Manthorpe Building Products is a high-performance cavity closer designed to provide thermal insulation and moisture control at door and window reveals in cavity wall constructions. Featuring a double flange profile, it offers secure positioning wit..
£91.36
£109.63 inc VAT
Brand: Manthorpe
Model and Size: G240-150 - 2.5m
Delivery Time: 1 - 2 days
G240 150mm Double Flange Thermal Cavity Closer from Manthorpe Building Products is a high-performance cavity closer designed to provide thermal insulation and moisture control at door and window reveals in cavity wall constructions. Featuring a double flange profile, it offers secure positioning wit..
£98.81
£118.57 inc VAT
Brand: Manthorpe
Model and Size: 165mm x 17mm x 100mm - 6m
Delivery Time: 1 - 2 days
165mm Damcor Insulated Vertical Damp Proof Course (DPC) a rolled insulated DPC designed to provide a thermal break and moisture barrier at door and window reveals where the cavity is closed using a returned blockwork detail. It’s a simple yet highly effective solution to combat cold bridging, conden..
£12.82
£15.38 inc VAT
Brand: Manthorpe
Model and Size: 165mm x 25mm x 100mm - 10m
Delivery Time: 1 - 2 days
165mm Stonecor Insulated Vertical DPC & Fire Barrier a premium-grade insulated damp-proof course (DPC) designed to close cavities using a returned blockwork detail, while also delivering 30 minutes of fire protection. It’s a complete solution for tackling thermal bridging, moisture ingress, and fire..
£28.89
£34.67 inc VAT
Brand: Manthorpe
Model and Size: 165mm x 17mm x 150mm - 6m
Delivery Time: 1 - 2 days
225mm Damcor Insulated Vertical Damp Proof Course (DPC) a rolled insulated DPC designed to provide a thermal break and moisture barrier at door and window reveals where the cavity is closed using a returned blockwork detail. It’s a simple yet highly effective solution to combat cold bridging, conden..
£18.39
£22.07 inc VAT
Brand: Manthorpe
Model and Size: 165mm x 25mm x 150mm - 10m
Delivery Time: 1 - 2 days
225mm Stonecor Insulated Vertical DPC & Fire Barrier a premium-grade insulated damp-proof course (DPC) designed to close cavities using a returned blockwork detail, while also delivering 30 minutes of fire protection. It’s a complete solution for tackling thermal bridging, moisture ingress, and ..
£40.62
£48.74 inc VAT
Brand: Manthorpe
Model and Size: G245 - 100nos
Delivery Time: 1 - 2 days
G245 Cavity Closer Fixing Clip (Tie) a practical accessory designed to securely anchor Manthorpe cavity closers into masonry walls. Manufactured from durable injection-moulded polypropylene, the clip allows for easy installation and alignment of cavity closers, helping reduce waste and improve build..
£23.00
£27.60 inc VAT
Brand: Manthorpe
Model and Size: 110/130mm - pack of 3
Delivery Time: 1 - 2 days
Redshield Cavity Barrier - 110/130mm is an all-in-one solution designed to meet the fire safety, thermal insulation, and damp-proofing requirements of modern cavity wall construction. Suitable for cavity widths between 110mm and 130mm, this product offers a streamlined approach to compliance with Ap..
£74.80
£89.76 inc VAT
Brand: Manthorpe
Model and Size: 130/160mm - pack of 3
Delivery Time: 1 - 2 days
Redshield Cavity Barrier - 130/160mm is an all-in-one solution designed to meet the fire safety, thermal insulation, and damp-proofing requirements of modern cavity wall construction. Suitable for cavity widths between 130mm and 160mm, this product offers a streamlined approach to compliance with Ap..
£78.32
£93.98 inc VAT
Brand: Manthorpe
Model and Size: 50/70mm - pack of 3
Delivery Time: 1 - 2 days
Redshield Cavity Barrier - 50/70mm is an all-in-one solution designed to meet the fire safety, thermal insulation, and damp-proofing requirements of modern cavity wall construction. Suitable for cavity widths between 50mm and 70mm, this product offers a streamlined approach to compliance with Approv..
£68.90
£82.68 inc VAT
Brand: Manthorpe
Model and Size: 70/90mm - pack of 3
Delivery Time: 1 - 2 days
Redshield Cavity Barrier - 70/90mm is an all-in-one solution designed to meet the fire safety, thermal insulation, and damp-proofing requirements of modern cavity wall construction. Suitable for cavity widths between 70mm and 90mm, this product offers a streamlined approach to compliance with Approv..
£71.24
£85.49 inc VAT
Brand: Manthorpe
Model and Size: 90/110mm - pack of 3
Delivery Time: 1 - 2 days
Redshield Cavity Barrier - 90/110mm is an all-in-one solution designed to meet the fire safety, thermal insulation, and damp-proofing requirements of modern cavity wall construction. Suitable for cavity widths between 90mm and 110mm, this product offers a streamlined approach to compliance with Appr..
£73.73
£88.48 inc VAT
Guide Price
Brand: Manthorpe
Model and Size: 110/130mm - pack of 3
Delivery Time: 1 - 2 days
Redshield Cavity Barrier Rebated - 110/130mm is an all-in-one solution designed to meet the fire safety, thermal insulation, and damp-proofing requirements of modern cavity wall construction. Suitable for cavity widths between 110mm and 130mm, this product offers a streamlined approach to compliance..
Guide Price: £74.80
£89.76 inc VAT
Brand: Manthorpe
Model and Size: 130/160mm - pack of 3
Delivery Time: 1 - 2 days
Redshield Cavity Barrier Rebated - 130/160mm is an all-in-one solution designed to meet the fire safety, thermal insulation, and damp-proofing requirements of modern cavity wall construction. Suitable for cavity widths between 130mm and 160mm, this product offers a streamlined approach to compliance..
£78.32
£93.98 inc VAT
Brand: Manthorpe
Model and Size: 50/70mm - pack of 3
Delivery Time: 1 - 2 days
Redshield Cavity Barrier Rebated - 50/70mm is an all-in-one solution designed to meet the fire safety, thermal insulation, and damp-proofing requirements of modern cavity wall construction. Suitable for cavity widths between 50mm and 70mm, this product offers a streamlined approach to compliance wit..
£68.90
£82.68 inc VAT
Brand: Manthorpe
Model and Size: 70/90mm - pack of 3
Delivery Time: 1 - 2 days
Redshield Cavity Barrier Rebated - 70/90mm is an all-in-one solution designed to meet the fire safety, thermal insulation, and damp-proofing requirements of modern cavity wall construction. Suitable for cavity widths between 70mm and 90mm, this product offers a streamlined approach to compliance wit..
£71.24
£85.49 inc VAT
Brand: Manthorpe
Model and Size: 90/110mm - pack of 3
Delivery Time: 1 - 2 days
Redshield Cavity Barrier Rebated - 90/110mm is an all-in-one solution designed to meet the fire safety, thermal insulation, and damp-proofing requirements of modern cavity wall construction. Suitable for cavity widths between 90mm and 110mm, this product offers a streamlined approach to compliance w..
£73.73
£88.48 inc VAT
Brand: Manthorpe
Model and Size: G246 - 50nos
Delivery Time: 1 - 2 days
G246 Cavity Closer Right Angle Fixing Clip a purpose-designed accessory from Manthorpe Building Products, used to create secure, jointed corners when installing cavity closers. Manufactured from durable injection-moulded polypropylene, it ensures precise alignment and a tight fit—ideal for forming c..
£19.55
£23.46 inc VAT
Brand: Manthorpe
Model and Size: WCMULTICOR - pack of 6
Delivery Time: 1 - 2 days
WCMULTICOR from Manthorpe Building Products is a versatile, high-performance cavity closer designed to suit cavity widths ranging from 50mm to 100mm. Engineered for ease of use and regulatory compliance, it provides a thermal break, acts as a vertical damp-proof course (DPC), and helps eliminate col..
£58.80
£70.56 inc VAT
Brand: Manthorpe
Model and Size: WCMULTICOR150 - pack of 6
Delivery Time: 1 - 2 days
WCMULTICOR150 from Manthorpe Building Products is a versatile, high-performance cavity closer designed to suit cavity widths ranging from 100mm to 150mm. It provides a comprehensive solution for thermal insulation, damp-proofing, and cold bridging prevention at door and window reveals—supporting com..
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