Masonry may deteriorate, crack, delaminate and fail for a variety of reasons. The components of the system are the fischer injection mortar fis v, an anchor sleeve made from plastic, and a profiled stainless steel tie. They are available in galvanised steel, stainless steel or, for fire rated applications, in aluminium. Having created the original onepiece stainless steel helical fastening nearly 30 years ago, helifix became a market leader in the design and manufacture, at its own uk factory, of specialist construction wall ties. Correct drilling techniques are essential to ensure efficacy of the retrofit wall tie, and to minimize aesthetic and structural damage to the property under repair. The resin and hardener are stored in separate chambers and are safely mixed together inside the nozzle. There are many reasons why it may be necessary to carry out remedial wall tie installation. Mar 14, 2012 the company at the link below supply remedial wall ties to merchants like me, i know that they were the suppliers to a similar project for the home of a very famous premiership footballer recently. Matrix industries resilient tie products provide structural support while reducing transmission of structure borne noise and vibration. The remedial wall tie vbsm is set in the loadbearing layer and into facing masonry using pushthrough installation. Be sure to make the pilot hole 10mm longer than the tie so that it can be recessed. The thor helical cd tie grips within an interlocking helical undercut. Wall tie replacement is often required when the original tying system loses strength as a result of corrosion.
New from ancon, the staifixthor helical crack stitching kit is a high strength, non. Allied wall ties manufacture a modular structural restraint system for existing and new buildings which are highly specified within the remedial industry. Helifix dryfix for mechanical pinning and remedial tying system. The corrosion problem of wall ties was first officially recognised in the 1960s in south wales. Accompanying accessories are also available for our specialist ties to ensure correct installation is achieved. Remedial wall ties for masonry wall tie replacement. Stainless steel ties are recommended for use in coastal or industrial locations. Wall tie replacement replacing cavity wall ties permagard. Most remedial wall ties will accommodate this loss of section. These ties were expected to last the lifetime of the building, but for many years it has been recognised that some of these wall ties have corroded after only 15 or 20 years. Remedial wall ties 9mm cd tie sitetech building products. An extension nozzle will be required when resin fixing remedial wall ties in the inner leaf of a cavity wall. For all remedial ties it is extremely important to use the correct drilling technique to avoid.
Before then british standard wall ties were typically manufactured from mild steel and commonly protected by a sacrificial zinc coating. The cdtie wall tie has a circumscribed diameter of 9mm and is typically driven into a tiny pilot hole. The slim plug edge and head enable a flush installation or a deeper installation with no annoying projection. We distribute thor helical wall ties including the airtwist cd tie see video below which is ce marked and installed neatly and quickly giving an almost.
As the original galvanised ties corrode, usually in the bed joint in the outer leaf, the stuctural integrity of the wall is reduced. Mechanical remedial wall ties use a 304 grade stainless steel rod. The helitie helical wall tie is a stainlesssteel tie used to anchor building facades to structural members or to stabilize brick walls. The need for remedial wall ties was established in the early 1980s, when wall tie failure was discovered as being a widespread problem across the uk before then british standard wall ties were typically manufactured from mild steel and commonly protected by a sacrificial zinc coating. The fischer remedial wall ties constitute a fast, costeffective solution for subsequently and permanently connecting the outer shell with the facing masonry. Stainless steel helical tie bars are simply hammered into a predrill pilot hole to deliver a self tapping dryfix connection that doesnt rely on the expanding mechanisms of mechanical ties or. Teplotie2 remedial wall tie pdf 317 kb teplobfr remedial wall tie pdf 590 kb ac31ac31c remedial wall ties pdf 621 kb mm63 remedial wall ties pdf 402 kb rm63 remedial wall ties pdf 862 kb staifix rr remedial wall ties pdf 961 kb stairib bar remedial wall ties pdf 979 kb channels and bolts channel and bolt fixings.
In the event of wall tie failure, remedial wall ties can be installed. The need for remedial wall ties was established in the early 1980s, when wall tie failure was discovered as being a widespread problem across the uk. This is designed as a remedial tie for a separating wall. Resilient masonry wall products matrix industries matrix. Helifix remedial products are extremely versatile and have wide ranging applications. Engineering solutions iexpert anchor design software specifiers resource book ramset design calculator as5216. They really know there stuff and should be able to advise you of the correct solution. For example, wall ties intended for use when constructing new walls should not be used for wall tie replacement. Remedial ties all remedial ties shall be obtained from suppliers registered to iso 9000. Designed specifically for ease and secrecy of installation with minimal disruption utilising a patented fixing system. Automatic mixing ensures an accurate blend and, being mixed only as required, the minimum of wastage. Resin bonded wall ties remedial wall ties for repair to cavity walls thor helical resin bonded wall ties. Remedial wall ties it happens occasionally on a job site, veneer ties inadvertently get left out of the wall during construction or some of the wall ties are fastened to the exterior sheathing and not the wood or metal studs as building code requires.
It will normally be inserted in 10mm o holes and resinbonded into both leaves. Code of practice for the installation of remedial wall. Acs offers a range of remedial ties designed to replace existing wall ties which may have failed, or in areas that require additional ties to meet the relevant building standards. This can cause cracking and weakness, eventually leading to collapse. How to fit remedial wall ties in 3 easy steps twistfix. Remedial wall ties matrix industries matrix industries. The fischer vbs 8 is installed in the bed joint of the outer leaf in a pushthrough installation.
Aug 11, 2009 remedial wall ties for wall tie replacement. Thor helical cd wall tie wall tie products wall ties. The most common reason is wall tie corrosion, where the original wall ties were inadequately protected against rusting. At first it was thought to be a combination of poor tie protection and exposure to the elements but time has shown that many of the early ties and mortars were just more susceptible to corrosion. A 110mm brick may lose a third of its thickness when the back is blown off. Wall ties and restraint fixings cavity wall ties pdf 1020 kb twopart wall ties pdf 1. The drill hole can be retrospectively grouted so that it.
Retrotie remedial wall tie with a dry and resin fix helifix. Code of practice for the installation of remedial wallties. Poor supervision during original construction can lead to ties being omitted, or cavity width may vary from design, resulting in poor tie embedment. There are many reasons why you may need to consider installation of remedial cavity wall ties. Remedial helical wall ties drilling technique and testing. Crack stitching helifix crack stitching repairs and stabilizes cracked masonry using helical stainless steel helibars bonded into cut slots with helibond grout for a quick, simple, effective and permanent solution. Wall ties 20m kit for remedial wall tie replacement twistfix. Remedial products over the last 35 years, helifix has developed a comprehensive range of versatile, purposedesigned, remedial products that individually or in combination, are able to costeffectively solve virtually all commonly occuring problems of structural failure in bricks, blocks, stone, concrete, timber and local materials. If you cant find the specialist ties you are looking for please feel free to contact our dedicated technical team. The fischer remedial wall tie vbs 8 is an officially approved system for the subsequent fixation of facing masonry with and without an air gap. This wall tie failure leads to horizontal cracks in the masonry, which are often first noticed on the exterior of the property. The use of rotary percussion drill bits for drilling pilot clearance holes is recommended wherever possible.
Sds setting tools enable safe twohanded drill operation throughout the wall tie installation process. Remedial products over the last 30 years, helifix has developed a comprehensive range of versatile, purposedesigned, remedial products that individually or in combination, are able to costeffectively solve virtually all commonly occuring problems of structural failure in. Cementie is a remedial wall tie system designed for use with thin wall and hollow block far wythes and in buildings over four storys high. Specialist ties remedial two part acs stainless steel. It meets the requirements of a type a wall tie to approved document e. May 07, 2012 how to build and setup a concrete foundation for garages, houses, room additions, etc part 1 duration. Resin bonded ties are widely accepted to provide a good fixing to most substrates, ideal for where the quality of the substrates are in doubt.
However, most common faults can be overcome by using various combinations of helifix remedial ties, fixings and masonry reinforcement products and techniques. Helical wall ties are suitable for remedial use in all masonry wall types and are well suited for dry pin fixing of solier course lintels. Available in various sizes to suit a range of brick, block, concrete and timber applications. Traditionally, wall ties were usually manufactured from galvanized mild steel. Helifix is a technically led company with an ongoing product development programme backed by thorough independent testing. Wall ties thor helical remedial structural solutions. In accordance with the approval, no drill hole cleaning is required. The anchor sleeve and anchor tie are inserted and are anchored. The heli tie helical wall tie is a stainlesssteel tie used to anchor building facades to structural members or to stabilize brick walls. Thor helical remedial cd wall ties ensure the stability of a cavity wall structure, tying the brick facade to the main body of the structure. Retrotie a remedial wall tie system, using specialist grade 304 or 316 stainless steel helical ties suitable for all environments including coastal, that is selftapping into the far leaf and resin bonded to the near leaf of most types of masonry. Cavity wall tie corrosion occurs when the original wall ties used in the construction start to corrode and debond from the substrate around them.
E digest 329 table 5 as being suitable for use in all remedial situations, irrespective of the buildings substrate or its. Matrix remedial solutions provides an easy, cost effective system of returning the building to strucural integrity. Dryfix is a versatile and rapidly installed mechanical pinning and remedial tying system that. Twistfix supplies easy to use retrofit replacement wall ties in corrosion resistant stainless steel. Remedial wall ties for masonry wall tie replacement this wall tie video demonstrates how to install replacement wall ties in a brick built cavity wall. Our specialist ties range from remedial ties, twopart ties to wall starters and column ties. Retrotie is a stainless steel remedial wall tie with an inner leaf mechanical fixing and resin bonding in the outer leaf that is effective in all common building materials. Remedial ties replacement wall ties tie failure acs. Provided that your walls are of a typical masonry cavity wall makeup, with each leaf being at least 90mm in thickness, you will need to install the remedial tying system at the rate of 2.
Wall tie spacing should be at 900mm centres vertically by 450mm centres horizontally, in a staggered pattern. Product s remedial wall ties are most often used for reconnecting the inner and outer walls of an existing cavitywall structure. The cd wall tie has a circumscribed diameter of 9mm and is typically driven into a tiny pilot hole to minimize disturbance to the masonry as installation proceeds. Remedial helical wall ties drilling technique and testing guide.
Applications of remedial helical wall ties masonry products. Crack stitching helifix crack stitching repairs and stabilizes cracked masonry using helical stainless steel helibars bonded into cut slots with helibond grout for a quick, simple, effective and permanent. The two expansion zones in the loadbearing layer and in the facing masonry ensure a secure fixation. The fischer remedial wall ties vbsm and vbs 8 enable subsequent invisible needling as per din 1053 or din en 845846 and din 18515 for economy facings. The helical design allows the tie to be driven quickly and easily into a predrilled pilot hole or embedded into mortar joints in new construction to provide a mechanical connection between a masonry facade and its backup material. Remedial products over the last 30 years, helifix has developed a comprehensive range of versatile, purposedesigned, remedial products that individually or in combination, are able to costeffectively solve virtually all commonly occuring problems of structural failure in bricks, blocks, stone, concrete, timber and local materials. Remedial wall ties for wall tie replacement youtube. Traditional remedial wall ties are made from metal or plastic and although usually labelled with a lifespan of 1550 years, they are time consuming to install and are subject to the same failure risks as the initially installed wall ties. How we install wall ties cavity wall ties timberwise. The sds drive tool which holds and hammerdrives the wall ties permits safer controlled installation of the cd tie. A no nonsense guide to replacing cavity wall ties, including identifying failed wall ties and how to install replacement wall ties.
583 36 395 905 589 1179 1463 1164 151 9 1615 997 609 42 1233 1040 863 107 917 399 1007 1083 945 503 640 1054 198 314 132 321 849 1293 824 242 1085 1458 789 1115 856 1450