Roof Ventilation

In today’s energy conscious society, one of the major problems faced by builders is the build up of high levels of condensation in the roof space.

Widespread use of central heating, double glazing and insulation can cause a temperature differential between living space and the cold air outside.

Warm air, carrying high levels of water vapour, is drawn by a process of convection to cold areas of the building including the roof void. If there is insufficient ventilation the water vapour condenses, leading to rotting timbers, the rusting of metal fixtures, felt damage and mould growth.

To solve this costly problem, Manthorpe manufactures a range of quality roof ventilation products which are suitable for new build and refurbishment situations.

Tile Ventilator Range

The Manthorpe range of in-line tile ventilators are designed to provide simple solution to the problems of roofspace ventilation and mechanical extraction through a large format concrete tiled roof.

Slate Vents

Manthorpe Alpha Slate Vents are an unobtrusive, economical roof ventilator providing 10,000mm² of air flow per unit. Vents available for new build and retro fit details.

Flexible Pipes

Designed for use with the Manthorpe Slate and Tile Vents, the GRPA Flexible Pipe range provides an economical, quick and effective connection to standard 4" soil pipes and ventilation systems.

Over Fascia Vent

Manthorpe’s slim line over fascia ventilator.
Ensures a flow of air into the roof space between the felt and the fascia board. 10,000mm² and 25,000mm² versions available.

Soffit Strips

The Manthorpe Continuous Soffit Ventilators are designed for use with a traditional fascia board to provide roof ventilation. Ventilation solutions available various soffit details.

Flash Vent

The Manthorpe Flash Vent is a simple one piece roll-out, easy fit sheet that provides weather-tight ventilation for abutment roof details with a continuous 5mm² of airflow.

Felt Lap Vent

The Manthorpe Felt Lap Vent.
A refurbishment product designed to increase the amount of ventilation into existing roof spaces.

Roll Panel Vent

The Manthorpe Eaves Panel Vents.
Designed to maintain a flow of air to the roof space from outside, thereby allowing the escape of built-up moisture.

Eaves Panel Vents

The Manthorpe Eaves Panel Vents.
Designed to maintain a flow of air to the roof space from outside, thereby allowing the escape of built-up moisture.

Eaves Comb Filler

The Eaves Comb Filler.
Providing a physical barrier to stop birds and large insects from entering the void between the felt and tiles.

Felt Support Trays

Manthorpe Felt Support Trays.
Designed to bridge the rafters and provide support for the roofing felt, eliminating the problem of rotting felt caused by sagging.

Circular Soffit Vent

Manthorpe’s Circular Soffit Vent.
Can be slotted into the soffit board prior to installation for new build situations or just as easily retro-fitted into existing soffits.

GRP Valley Troughs & Flashing

Manthorpe’s valley troughs and flashings offer a cost effective and durable alternative to more traditional roofing materials such as lead.