RYTWEEP – Rytons Rytweep® (Cavity Weep)

Categories: Cavity and Underfloor Ventilators, Weep Hole Ducts, Weep Hole Ducts and Slim Vents

General Details

Features and Benefits

An unobtrusive cavity weep hole duct.
Virtually invisible when installed; showing only the small weep outlet.
The simple design allows quick and easy fitting with no special brickwork required.
Flush face maintains the aesthetic appearance of the building.
Lugs aid mortar adhesion for efficient installation.
Compatible with Rytons Rytweep^® Tube (RYTWTUBE) for use in blockwork or to allow for rendering.
To protect the outlet from blockage during rendering or water penetration during flooding use Rytons DamRyt^® Rytweep^® Protector (DAMWEEP).
Rytons Rytweep^® Clear is Patent Approved GB2586083.

Please note: This item is a plastic component and therefore is not suitable for use within a) the external walls of buildings more than 11m high where people sleep on the premises (residential, institutional or hospitality) or b) external wall surfaces within 1m of the boundary if the building is 11m high or less, in England. For a compliant alternative see Rytons A1 Fire-rated Metal Rytweep part of Rytons A1 Fire-rated Ventilation Range.

Size:

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Colours and Codes:

Composition:

Installation:

Installation is fast and easy as work proceeds with a Rytweep^® replacing the vertical mortar joint. Ensure the tapered end with the circular outlet is facing the outside and is flush with the external face. Position the bottom of the Rytweep^® on the mortar bed against the brick/block. Postion the next brick alongside the installed Rytweep^® and mortar in until only the small weep outlet is visible (ensuring the outlet does not become blocked). Space every fourth brick to drain cavities above and below the dpc, and above lintels and cavity trays. At least two weep holes should be provided over an opening, i.e. lintel.

Reference Material:

NHBC Standards 6.1.17. Where fairfaced masonry is supported by lintels weep holes should be provided at a maximum of 450mm intervals and each opening should have at least two weep holes.
NHBC Standards 6.11.7c. Rendering shall be detailed to ensure appropriate weathertightness and durability. Issues to be taken into account include … c) weepholes. Weepholes should be provided: where required for ventilation to timber frame construction; to the last tray at stepped abutments; in severe or very severe exposure zones where rendering is returned back into the window or door head (weepholes are not required where the render is not returned); to cavity trays on parapet walls.
The Building Regulations, Approved Document C, Internal and external walls (moisture from the ground) 5.5 (b) If the wall is an external wall, the damp-proof course should be at least 150mm above the level of the adjoining ground. 5.5 (c) If the wall is an external cavity wall provide weep holes every 900mm to assist in the transfer of moisture through the external leaf. Where the damp-proof tray does not extend the full length of the exposed wall, i.e. above an opening, stop ends and at least two weep holes should be provided.
Also, refer to British Standards BS 8215.

Handling Information:

NBS Specification:

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