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Rubble Masonry

Here we examine the properties of rubble masonry in relation to installing our climbing aid systems and provide examples of the problems that can occur. Many of our kits are suitable for this material.

 

 

 

Characteristics

Rubble masonry can be made from both rough, un-dressed hides or hewn, well proportioned blocks. Depending on the type of stone the block themselves can be very large, however it is also possible to find smaller stones. Regardless of size, the stones are always set in mortar, the joints of which can vary in size from very broad to very narrow.

 

 

Problem Areas

Natural stone facades may already be strongly weathered, cracked and/or torn, if this is the case then they must be plastered before any drilling can be done, making them plaster masonryplease click the link for more information. Always be aware of the durability of the stones, before installing a climbing aid system.

Protruding aspects of the wall such as cantilevers, cornices, etc. can be made of soft, natural stone like sandstone, which is relatively weak. Therefor we recommend that you only attempt to attach a trellis fitting if the facade is thick enough and err on the side of caution by using a low pressure installation method, i.e. bonding with composite mortar as opposed to rawlplugs.

With the excessive unevenness of rubble masonry walls, we recommend that you use wall anchors with an extra long, protruding shaft to allow you to create the desired distance away from the wall. You may find it necessary to use more anchors than initially planned in order to find a sufficient, secure fastening spots.

Suitable Wall Anchors and Drill-Bits

All 5 FassadenGrün construction styles, with their standard wall anchors, are compatible with this material and can be fastened in the stones or in the joints - you may find you that you have to drill into both, in order to successfully install your selected trellis. If attaching in narrow stone facades such as cornices or cantilevers, avoid any kind of expansion anchor as they exert too much pressure on the rock and will do too much damage. Use an expansion free anchor or rawlplug and secure with composite mortar. Hammer drills, universal drills, and percussion drills are all equally suitable.

Grapevine to a broken stone facade of limestone
Drystone-facade with grapevine in Freyburg / Saxony-Anhalt
Steel cables in Heavy kit construction, pressure help and falling protection for ivy, adhering on stone AND joints.
Castle window, old castle Stuttgart, Baden-Wuerttemberg.
Wire rope holder of the light construction style, WM 06093, on a rough stone wall
WM 06093 on a drystone wall
Grapevine on a wall made of big limestone blocks
Natural stone / limestone
Natural stone wall with heavily eroded joints, cable system 2040 Medium kit 'Classic', rose
Green natural stone wall, Bretagne/France
Massive granite slabs with cable system 4010, Medium kit 'Classic', unlike with short shaft and brass plug, clematis
Granite slab with clematis
Natural stone wall with heavily eroded joints, cable system 2040 Medium kit 'Classic', rose
natural stone wall with trellis fruit
Cable system in medium construction style in rubble masonry
Wire rope system on ashlar masonry