Roofing & Ventilation

1000 Gauge Polythene is available in black.

1200 Gauge Polythene is available in black. This product is made from recycled plastics and is long lasting. It is both rot and waterproof and has great resistance to puncturing. This heavy duty polythene is used in construction where more wear and tear would be expected. It can be used as a damp proof membrane under concrete floor slabs or in a sandwich construction.

The Manthorpe G930 Airbrick has been designed to provide high levels of ventilation into cavity walls and underfloor voids. The 9" x 3" brick is stackable and can be joined together to create larger vent openings. The airbrick features a front-mounted grill which consists of evenly spaced openings specifically sized to prohibit large insects from gaining access but wide enough not to be blocked by debris, paint or water droplets. A mortar key around the edge of the airbrick ensures it can be securely fixed to the surrounding masonry.

The Manthorpe Ventilation Air Brick 216 x 70 x 58mm (L x H x W) Terracotta has been designed to provide high levels of ventilation into cavity walls and underfloor voids. The 9" x 3" brick is stackable and can be joined together to create larger vent openings. The airbrick features a front mounted grill which consists of evenly spaced openings specifically sized to prohibit large insects gaining access but wide enough not to be blocked by debris, paint or water droplets. A mortar key around the edge of the airbrick ensures it can be securely fixed to the surrounding masonry.

The G951 Peep Weep provides an unobtrusive solution to cavity wall drainage requirements. The weep features a mortar key to ensure adhesion to the building fabric and an external rib to aid positioning. The rib surrounds a 62mm high opening to prevent mortar blockage from within the cavity. The weep’s protective hood which when fitted “peeps” out from the brick fascia is designed to guard against blockage during installation and stops penetration of wind driven rain. The exit hole is ample for water drainage but small enough to prevent entry of large insects.

The G961 Extension Sleeve allows the vent to reach a further two brick courses vertically. The sleeve can also be fitted to the base of a telescopic underfloor void ventilator to provide horizontal extension through larger cavities.

The Manthorpe G950 Weep Vent is used to drain lintels, cavity trays and to ventilate cavity walls.

The Manthorpe G950 Weep Vent is used to drain lintels, cavity trays and to ventilate cavity walls. The product can be slotted between two bricks and mortared into position.

The Manthorpe G950 Weep Vent is used to drain lintels, cavity trays and to ventilate cavity walls.

The G951 Peep Weep provides an unobtrusive solution to cavity wall drainage requirements. The weep features a mortar key to ensure adhesion to the building fabric and an external rib to aid positioning. The rib surrounds a 62mm high opening to prevent mortar blockage from within the cavity. The weep’s protective hood which when fitted “peeps” out from the brick fascia is designed to guard against blockage during installation and stops penetration of wind driven rain. The exit hole is ample for water drainage but small enough to prevent entry of large insects.

The G951 Peep Weep provides an unobtrusive solution to cavity wall drainage requirements. The weep features a mortar key to ensure adhesion to the building fabric and an external rib to aid positioning. The rib surrounds a 62mm high opening to prevent mortar blockage from within the cavity. The weep’s protective hood which when fitted “peeps” out from the brick fascia is designed to guard against blockage during installation and stops penetration of wind driven rain. The exit hole is ample for water drainage but small enough to prevent entry of large insects.

The G960 Telescopic Underfloor Void Ventilator is designed to provide a clear airflow passage to the void underneath a suspended floor. The telescopic feature enables the ventilator to adjust vertically between three and five brick courses. The right airflow can be achieved when the ventilator is used with a Manthorpe G930 Airbrick. The aperture can also accept a standard clay airbrick, although the airflow is reduced.

IKO Shed Felt is an economical, bituminous, fibre based roofing felt with a protective and decorative fine mineral finish. It is used to waterproof and protect a variety of common garden buildings, such as sheds, summerhouses, kennels and hutches