Roof Access Hatches

A fabricated Access Hatch complete with integrated Vent-axia fan


We can provide a variety of roof hatches, made to order with a selection of actuation, control and material options.


To provide a means of access to roof areas and prevent unauthorised access from above

In any natural ventilation scheme involving conventional industrial buildings the optimum position, under normal circumstances, is to provide a system of air extraction through the highest point of a building. The Kenstack can be mounted high up the roof slope just below the ridgeline.

It can be manufactured to suit any pitch of roof and can be fixed to any type of sheeted or decked roof.

The Ventilators are offered in a range of materials and colours to colour match or contrast with the roof claddings.

Each Ventilator is custom made to suit individual requirements with a variety of functional and control options.

Design and Installation Flexibility

With such a wide range of throat opening widths and lengths, together with the option of employing as many units as required, design and installation options are limitless.

Functional options

  • Manual locking
  • Electrical operation by 24vDC / 230vDC motor
  • Pneumatic Actuation


Units are made-to-measure with configurations to suit your requirements.

Materials & Finishes

  • Base of units constructed of mill finish aluminium
  • Hatch lids can be produced in aluminium, polycarbonate or double glazed to suit your requirements

Aluminium is available with a polyester powder paint finish (including Syntha Pulvin) with a wide choice of colours and gloss levels.


Maintenance should be carried out in accordance with McKenzie-Martin’s recommendations.

System Design & Product Selection

Assistance with scheme design and product selection is offered by our experienced technical team.



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