Kima Outside/In Pitched Roof Vent - Roof Felt Vent
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Details
Kima Outside/In Pitched Roof Vent - Roof Felt Vent is a roof felt / underlay ventilator designed to improve loft airflow, helping reduce condensation and prevent moisture build-up behind the roof covering.
It is fitted from outside the roof during pitched roof works at underlay or felt-lap level. Rather than replacing a roof tile or slate, it creates a discreet ventilation path through the roofing membrane so stale, humid air can escape from the loft void.
Best for
- Loft condensation issues in existing pitched roofs
- Improving airflow at loft level without a visible roof tile vent
- Supplementary ventilation alongside existing eaves, soffit or ridge ventilation
Key features
- Helps reduce condensation and trapped moisture in the roof space
- Improves airflow through the loft void
- Prevents moisture build-up behind roofing underlay
- Does not connect to extractor fans or soil pipes
- Suitable for roofing membranes/felts from 0.2mm to 25mm thickness where stated
- Suitable for roof pitches above 12.5°
Compatible with / used with
- Used with lapped roofing felt or membrane systems
- Works independently of slate, concrete tile or clay tile profile because it vents at underlay/felt level
- Can support eaves/soffit/ridge ventilation strategies
- Not designed for connection to pipes, adaptors, extractor fans or soil ventilation
Ventilation performance
- 52cm² airflow area per unit
- Spacing/quantity should be assessed across both roof slopes for effective cross-flow
Things to consider before buying
- Check the roof has suitable felt or membrane laps before buying
- Investigate and reduce moisture sources inside the home as well as adding ventilation
- Do not block eaves ventilation with insulation
- For powered extraction from bathrooms/kitchens, use a dedicated tile vent/adaptor/flexipipe system instead
Technical specification
- Material: Polypropylene
- Airflow: 52cm/2
- internal diameter: 95mm
- Colour: Black
- Suitable for installation on any roof pitch above 12.5 degrees