Low threshold detail download 67 kb bottom running gear download 103 kb.
Bifold door threshold detail.
Recommended for external applications and usually fitted onto a projecting cill.
Marlin provides a free sample of the chosen bi fold or sliding door system threshold which allows the builder to work with a physical piece of the actual profile.
The weathered threshold provides a rebate for the doors to seal against ensuring full protection from the elements.
Bifolding door threshold choices.
The sample can be placed in the ground and worked with to fully understand the relationship between the height of masonry that will support the threshold and internal and external levels.
A low threshold is ideal for internal bifolding doors such as between your house and conservatory as it is only 15mm high and if necessary can be sunk into the floor to provide a flush floor level.
The weathered threshold is designed for external bifold doors and will normally sit on top of a projecting cill.
The solution is to fit the appropriate threshold in the location.
Most common door thresholds on all types of doors have a rebate.
This is an upstand that is designed to create a physical barrier against any water entering the inside.
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Outer frame head.
Thinking about draining options is necessary with external bifold doors as an adequate drainage function is required to channel water away from the threshold during instances of rain.
Another element to keep in mind when you re considering the setup of your bifold doors is the drainage.
In extreme weather conditions it is possible that wind and sometimes rain can penetrate the low threshold.
Bifold door thresholds the best threshold is one which provides a smooth entry from outside to inside.
From technical drawings and specification sheets through to door and window installation guides.
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Don t forget to think about bifold door drainage.
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